УСТАНОВКА СЖАТИЯ ХЛАДАГЕНТА

Изобретение относится к области компрессоростроения, в частности к установкам для сжатия хладагента. Установка включает в себя корпус, по меньшей мере одну ступень низкого давления и по меньшей мере одну ступень высокого давления, ведущий к ступени низкого давления, исходя от всасывающего патрубка для хладагента, всасывающий канал, ведущий от ступени низкого давления к ступени высокого давления канал промежуточного давления, соединенный со ступенью высокого давления патрубок высокого давления. Установка включает также находящуюся под промежуточным давлением в канале промежуточного давления ванну смазочного средства таким образом, чтобы всегда было обеспечено достаточное питание смазочным средством для ступени низкого давления. Устройство подачи смазочного средства отбирает смазочное средство из резервуара смазочного средства и подает в текущий к ступени низкого давления во всасывающем тракте всасываемый хладагент. Обеспечивается достаточное питание смазочным средством ступени низкого давления ...

ЭЛЕКТРОННОЕ УСТРОЙСТВО УПРАВЛЕНИЯ МОТОРОМ НАСОСА

Система управления предназначена для управления мотором насоса системы смазки. Система содержит подвод питания системы насоса, привод мотора, датчик тока, контроллер смазки и контроллер привода. Подвод питания системы насоса приспособлен подавать питание системы. Привод мотора приспособлен приводить в действие мотор насоса смазки с помощью питания системы. Датчик тока расположен между подводом питания системы насоса и приводом мотора, чтобы распознавать входной ток питания системы. Контроллер смазки приспособлен обеспечивать сигналы активации мотора. Контроллер привода расположен так, чтобы принимать сигналы активации мотора с помощью отдельного цифрового входа и управлять приводом мотора как функцией распознанного входного тока и определенной пользователем заданной величины тока в ответ на сигналы активации. Технический результат – расширение арсенала технических средств управления мотором насоса смазки. 2 н. и 13 з.п. ф-лы, 3 ил.

ШЕСТЕРЕННЫЙ НАСОС

Полезная модель относится к области машиностроения. Шестеренный насос содержит крышки, соединенные с корпусом посредством винтового соединения, корпус с отверстиями подвода и отвода рабочей жидкости и внутренними параллельными расточками, в которых установлены ведущая и ведомая шестерни, компенсаторы торцевого уплотнения венцов шестерен с установленными в них манжетами и подшипники скольжения с размещенными в них цапфами шестерен. Компенсаторы выполнены из низколегированного сплава меди с железом с содержанием железа (2,6…2,85)%, что обеспечивает повышение эксплуатационной надежности шестеренного насоса за счет увеличения износостойкости высокоскоростных узлов трения.

ШЕСТЕРЕНЧАТЫЙ НАСОС

... 1. Шестеренчатый насос с двумя находящимися в зацеплении шестернями (4, 5), которые посредством приводимого в действие приводного вала (7) и опорной цапфы (21) установлены с возможностью вращения в корпусе (1) насоса и между впускным отверстием (2) насоса и выпускным отверстием (3) насоса образуют систему (6) нагнетательных каналов, и с несколькими зазорами, образованными между корпусом (1) насоса, шестернями (4, 5), приводным валом (7) и опорной цапфой (21), при этом один из зазоров образован между приводным валом (7) и одной из шестерен (4), и при этом в этом зазоре расположено соединительное средство (9) для соединения без возможности поворота приводного вала (7) с шестерней (4), отличающийся тем, что зазор между приводным валом (7) и шестерней (4) уплотнен по отношению к торцам шестерни (4) с помощью уплотнительного средства (14.1, 14.2). ! 2. Шестеренчатый насос по п.1, отличающийся тем, что уплотнительные средства образованы по меньшей мере двумя расположенными на расстоянии друг ...

ШЕСТЕРЕННАЯ МАШИНА

Шестеренная машина относится к области гидравлических и пневматических машин объемного вытеснения с вращающимся рабочим органом, в которых движение нагнетаемой среды происходит в направлении, перпендикулярном осям вращения шестерен, и может быть использовано в насосах для перекачки многофазных сред, в частности нефтепродуктов с высоким содержанием газовой фракции, и сред с большим количеством загрязнений, а также в пневмо- и гидродвигателях. Машина представляет собой корпус 1 с двумя цилиндрическими расточками 5 и 6, в которых расположены зубчатые колеса 7 и 8, находящиеся в зацеплении. Колеса имеют винтовые зубья. Профиль зубьев одного из колес в торцовом сечении образован дугами окружностей 14, смещенных относительно оси вращения колеса, а профиль зубьев второго колеса в этом же сечении образован участками фронтов циклоидальных кривых 15, образуя эксцентриково-циклоидальное (ЭЦ) зацепление колес. При определенных параметрах такое зацепление имеет пятно контакта, находящееся вблизи полюса ...

Gear pump

A claw pump

A claw pump, comprising a stator element 50, two cooperating rotor elements 40,42 mounted on parallel shafts and each having a claw shaped profile, at least one gas feed inlet 20 for inputting a gas flow into the pump, and at least one outlet 30,32 for outputting the gas flow from the pump. A first of the rotor elements comprises a first cross sectional area 43 along at least a first longitudinal length of the rotor element and a larger cross sectional area 44 along at least one further longitudinal length of the rotor element, the larger cross sectional area providing a surface of the rotor element that intermittently covers and uncovers at least one of the at least one outlets during rotor rotation. The two rotors may intermesh. The rotors may have multiple sections with different cross-sectional areas. The rotor claws may extend substantially towards the chamber wall. The outlet may be located in an axial end surface or a radially outer surface, or a combination of the two.

ROTATION POSITIVE-DISPLACEMENT PUMP WITH LIMITED RADIAL SPACE REQUIREMENT

Electronic pump motor control

A motor control system for a lubricant pump motor comprises a pump system power input, a motor drive, a current sensor, a lubrication controller, and a drive controller. The pump system power input is configured to supply system power. The motor drive is configured to drive the lubricant pump motor using the system power. The current sensor is disposed between the pump system power input and the motor drive to sense an input current of the system power. The lubrication controller configured to provide motor activation signals. The drive controller is disposed to receive the motor activation signals via an isolated digital input, and to control the motor drive as a function of the sensed input current and a user-defined current set-point, in response to the activation signals.

NEW TYPE GEAR SYSTEM

The invention is referred to a new type gearing system where the gears are involved between them with an angled formation inclined dentures (1). The gears are found inside a housing (4) while from a hole (2) in their center a transmission axis (3) passes through them. Each housing (4) contains one or more inserting holes (5) and exerting holes (6), in result the air that enters the inserting hole to rotate each gear for the arc of the circle, until it exits from the corresponding exertion hole (6). The application of the new type gearing system can also be done in motors and in liquid and gas pumps, as it requires minimum maintenance and can be made in different sizes depending on each application.

COMBUSTION ENGINE COMPRISING AT LEAST ONE DRY SUMP CRANKCASE

La présente invention concerne un moteur à combustion (1) comportant au moins un carter moteur (2) permettant de définir un logement de guidage (3) dans lequel au moins un vilebrequin (4) est guidé en rotation autour d'un axe de rotation V et lubrifié par un fluide de lubrification, ledit au moins un carter moteur (2) étant de type "sec". Un tel moteur à combustion (1) comporte au moins deux pompes (7, 8) formant un train de pompes (10) coaxiales, ledit train de pompes (10) étant rapporté dans un alésage cylindrique (26) dudit au moins un carter moteur (2).

EXTERNAL GEAR PUMP INTEGRATED WITH TWO INDEPENDENTLY DRIVEN PRIME MOVERS

A pump includes a casing defining an interior volume. The pump casing includes at least one balancing plate that can be part of a wall of the pump casing with each balancing plate including a protruding portion having two recesses. Each recess is configured to accept one end of a fluid driver. The balancing plate aligns the fluid displacement members with respect to each other such that the fluid displacement members can pump the fluid when rotated. The balancing plates can include cooling grooves connecting the respective recesses. The cooling grooves ensure that some of the liquid being transferred in the internal volume is directed to bearings disposed in the recesses as the fluid drivers rotate.

ROTORS FORMED USING INVOLUTE CURVES

The present disclosure describes the use of involute curves for use in energy conversion devices, as well as timing or indexing gears. Several different embodiments are shown using rotors of several examples of lobe numbers and shapes.

Cycloidal Spur Pump Gears

Volumetric pump to gears.

Una pompa volumetrica (1) comprende una carcassa comprendente un corpo centrale (2) e due coperchi di chiusura, in detto corpo centrale (2) essendo ricavate due camere cilindriche comunicanti (22, 23), un condotto di aspirazione (I) e un condotto di mandata (O), e due rotori (3, 4) montati girevoli in dette camere (22, 23) del corpo centrale e supportati da rispettivi alberi montati girevolmente in detti coperchi di chiusura. I due rotori (3, 4) comprendono: un rotore maschio (3) che comprende solo protuberanze (30) e non prevede cave, e un rotore femmina (4) che comprende solo cave (40) e non prevede denti o protuberanze.

Volumetric pump to gears.

Una pompa volumetrica (1) comprende una carcassa comprendente un corpo centrale (2) e due coperchi di chiusura (20), in detto corpo centrale (2) essendo ricavate due camere cilindriche comunicanti (22, 23), un condotto di aspirazione (I) e un condotto di mandata (O), e due rotori (3, 4) montati girevoli in dette camere (22, 23) del corpo centrale e supportati da rispettivi alberi (5, 6) montati girevolmente in detti coperchi di chiusura (20). I due rotori (3, 4) comprendono: un rotore maschio (3) che comprende solo protuberanze (30) e non prevede cave, e un rotore femmina (4) che comprende solo cave (40) e non prevede denti o protuberanze.

FLUID TRANSFER PUMP

A portable fluid transfer method and apparatus for moving a fluid from a source to a destination. The apparatus comprises a pump driven by an air motor, an activating valve, a needle valve for adjusting the flow of air from the air motor, and connections to the source of fluid that allow the fluid to be contained throughout the transfer to the destination.

Gear metering pump for compounded elastomeric material

ЗУБЧАТЫЙ НАСОС (ВАРИАНТЫ)

Изобретение относится к объемным насосам, а именно к зубчатому насосу с улучшенным впускным каналом. Зубчатый насос (100) содержит впускной канал (116), который заканчивается в направлении нагнетания роторного комплекта (104) идущим радиально внутрь наклонным участком (132). Наклонный участок (132) служит для того, чтобы направлять рабочую жидкость от впуска (116) радиально внутрь в нагнетательную камеру (126) роторного комплекта (104), которая проходит над наклонным участком (132). За счет закрывания нагнетательной камеры (126) в радиально внутренней точке эффективность заполнения нагнетательной камеры (126) повышается, снижается кавитация и/или рабочие шумы насоса. 2 н. и 19 з.п. ф-лы, 15 ил.

ШЕСТЕРЕННЫЙ НАСОС

Шестеренный насос предназначен для нагнетания рабочей жидкости под высоким давлением в гидравлические системы автомобилей, тракторов, сельскохозяйственных, дорожно-строительных и другой транспортной техники, а также в маслосистемы различных газоперекачивающих агрегатов. Кроме того, шестеренный насос может также применяться для перекачивания различных нефтепродуктов и других неагрессивных жидкостей. Шестеренный насос состоит из крышки 1, корпуса 2, ведущей шестерни 3, ведомой шестерни 4, компенсаторов 5, манжет 6 и подшипников 7. Внутри крышки 1 есть расточка 8 и расточка 9, а внутри корпуса 2 тоже есть такие же расточки 8 и 9. Кроме того в корпусе 2 имеются отверстие 10 подвода рабочей жидкости и отверстие 11 для ее отвода из насоса в гидравлическую систему машины. Ведущая шестерня 3 имеет приводной конец 12. Ведомая шестерня 4 состоит из оси 13 и зубчатого колеса 14. Подшипники 7 имеют лыску 15, а на каждом конце оси 13 есть лыска 16. Подшипники 7 установлены в расточках 8 крышки 1 и корпуса ...

ШЕСТЕРЕННЫЙ НАСОС

Насос шестеренный, содержащий корпус, в расточках которого размещены шестерни внешнего зацепления с цапфами, образующие с расточками корпуса камеры всасывания и нагнетания, каналы подвода и отвода рабочей жидкости, отличающийся тем, что корпус выполнен составным и содержит заднюю, переднюю и среднюю части, причем в средней части корпуса размещены торцевые компенсаторы, образующие с расточками корпуса и шестернями камеры всасывания и нагнетания, а расточки под цапфы задней и передней части корпуса выполняют роль подшипниковых узлов, при этом в ведомой шестерне и передней части корпуса выполнен канал, состоящий из осевого отверстия в валу ведомой шестерни и отверстия в передней части корпуса, с возможностью прохождения по нему рабочей жидкости, при этом комбинация материалов корпуса и цапф шестерен имеют значение коэффициента трения скольжения 0,1-0,15.

УСТРОЙСТВО ДЛЯ НАНЕСЕНИЯ ДВУХКОМПОНЕНТНЫХ СОСТАВОВ

Полезная модель относится к устройствам для нанесения на твердые поверхности двухкомпонентных составов, компоненты которых необходимо смешивать непосредственно перед нанесением, и может быть использована в строительстве для нанесения уплотняющих, изолирующих, огнезащитных и тому подобных покрытий. Устройство включает резервуары компонентов состава, шестеренные насосы для подачи компонентов и средства для смешения компонентов и распыления смеси. Насосы соединены с общим электроприводом с помощью зубчатого редуктора, ведущая шестерня которого контактирует с шестерней, закрепленной на валу одного из насосов, на котором закреплена также вторая шестерня, контактирующая с шестерней, закрепленной на валу второго насоса, через паразитную шестерню. Насосы, электропривод и редуктор могут быть установлены на тележке. Технический результат - создание компактного устройства, которое может быть выполнено как стационарным, так и транспортабельным. 2 ил.

Насосное шестеренное устройство

Изобретение относится к шестеренным насосам. Насосное шестеренное устройство содержит корпус, у которого с одной стороны размещена насосная область, а с противоположной – приводная область. В насосной области установлены четыре шестеренных насоса 6, соединенных между собой каналами 7, и распределитель 9. В приводной области установлена центральная приводная шестерня, соединенная с шестернями приводных валов насосов 6. Устройство снабжено перепускными кранами 8. Распределитель 9 выполнен центральным с возможностью переключения. Насосы 6 выполнены с возможностью последовательного или параллельного соединения посредством переключения кранов 8. Изобретение направлено на расширение технологических возможностей. 4 ил.

СИСТЕМА ВЕНТИЛЯЦИИ СМАЗКИ

ШЕСТЕРЕНЧАТЫЙ НАСОС

... 1. Зубчатый насос, который содержит: ! кожух насоса, образующий роторную камеру, а также впуск насоса и выпуск насоса; ! роторный комплект, размещенный в роторной камере, выполненный с возможностью вращения в направлении нагнетания, причем роторный комплект содержит внутренний ротор и внешний ротор, при этом роторы имеют зубья, которые входят в зацепление и выходят из зацепления при вращении роторного комплекта, образуя группы последовательных нагнетательных камер между роторными зубьями, причем каждая нагнетательная камера имеет объем, который увеличивается, когда зубья выходят из зацепления, и уменьшается, когда зубья входят в зацепление; ! выпускной канал, создающий флюидную связь между выпуском насоса и нагнетательными камерами, когда объем нагнетательных камер уменьшается; ! впускной канал, создающий флюидную связь между впуском насоса и нагнетательными камерами, когда объем нагнетательных камер увеличивается, причем впускной канал заканчивается в направлении нагнетания идущим радиально ...

ШЕСТЕРЕНЧАТЫЙ НАСОС, ПРЕДНАЗНАЧЕННЫЙ ДЛЯ РАБОТЫ, В ЧАСТНОСТИ, В КАЧЕСТВЕ ТОПЛИВНОГО НАСОСА ВЫСОКОГО ДАВЛЕНИЯ

ШЕСТЕРЕНЧАТЫЙ НАСОС

... 1. Шестеренчатый насос с несколькими входящими в зубчатое зацепление друг с другом для подачи среды зубчатыми колесами (3, 4), которые удерживаются в корпусе (1) насоса с возможностью вращения, и с насосным валом (5) для приведения в движение одного из зубчатых колес (4), причем насосный вал (5) через муфтовый конец (5.1) выполнен с возможностью соединения с приводом, отличающийся тем, что на окружности насосного вала (5) расположено тормозное кольцо (11), которое по меньшей мере одной тормозной поверхностью (11.1) воздействует на фрикционную поверхность (5.3) насосного вала (5) или на фрикционную поверхность корпуса (1) насоса.2. Шестеренчатый насос по п.1, отличающийся тем, что тормозное кольцо (11) удерживается в корпусе (1) насоса, предпочтительно в корпусе (1.4) вала, без возможности поворота, и что тормозная поверхность (11.1) выполнена на внутреннем диаметре тормозного кольца (11).3. Шестеренчатый насос по п.2, отличающийся тем, что фрикционная поверхность (5.3) насосного вала (5 ...

Zweispindelige Schraubenspindelpumpe in zweiflutiger Bauweise

Die Erfindung zeigt eine Zweispindelige Schraubenspindelpumpe in zweiflutiger Bauweise mit einem Pumpengehäuse, das einen Pumpenabschnitt, zwei Lagerabschnitte und wenigstens einen Getriebeabschnitt mit wenigstens einem Getrieberaum aufweist, wobei die Lagerabschnitte und der Pumpenabschnitt getrennt voneinander ausgeführt sind, mit einem Fördergehäuseteil als Bestandteil des Pumpenabschnitts, in dem auf zwei Wellen angeordnete Förderschrauben mit Flanken in zweiflutiger Ausführung vorgesehen sind, wobei die Förderschrauben auf den Wellen einen Fußkreisdurchmesser aufweisen, die Wellen beidseitig in den Lagerabschnitten mit Lagern gelagert sind (Außenlagerung), im Lagerabschnitt eine Dichtung zur Abdichtung des Lagerabschnitts gegenüber dem Förderabschnitt vorgesehen ist, und die Wellen sich wenigstens einseitig in den Getriebeabschnitt erstrecken, mit auf den Wellen im Getriebeabschnitt angeordneten Zahnrädern, mittels derer die Wellen drehgekoppelt sind, dadurch kennzeichnet, dass der ...

Zweispindelige Schraubenspindelpumpe in zweiflutiger Bauweise

Die Erfindung zeigt eine Zweispindelige Schraubenspindelpumpe in zweiflutiger Bauweise mit einem Pumpengehäuse, das einen Pumpenabschnitt, zwei Lagerabschnitte und wenigstens einen Getriebeabschnitt mit wenigstens einem Getrieberaum aufweist, wobei die Lagerabschnitte und der Pumpenabschnitt getrennt voneinander ausgeführt sind, mit einem Fördergehäuseteil als Bestandteil des Pumpenabschnitts, in dem auf zwei Wellen angeordnete Förderschrauben mit Flanken in zweiflutiger Ausführung vorgesehen sind, wobei die Förderschrauben auf den Wellen einen Fußkreisdurchmesser aufweisen, die Wellen beidseitig in den Lagerabschnitten mit Lagern gelagert sind (Außenlagerung), im Lagerabschnitt eine Dichtung zur Abdichtung des Lagerabschnitts gegenüber dem Förderabschnitt vorgesehen ist, und die Wellen sich wenigstens einseitig in den Getriebeabschnitt erstrecken, mit auf den Wellen im Getriebeabschnitt angeordneten Zahnrädern, mittels derer die Wellen drehgekoppelt sind, dadurch kennzeichnet, dass der ...

Lubrication of screw machines

An improvement in positive displacement hydraulic machines

HYDRAULIC GEAR WHEEL MACHINE WITH A FLOATING BODY.

A rotary displacement pump with space-saver radial

According to the invention, the rotary pump consists of an external gear (13) with internal teeth (16) in the form of a squirrel cage, and an internal gear (9), housed in an off-centre manner in the interior of said external gear (13) and fitted with external teeth (9D) intermeshing with said internal teeth (16) and consisting of a number of inferior teeth of a unit with the number of teeth of the later. The rotation means of said external teeth (13) comprise at least a bearing (11, 12) centrally laid out in a flange end (14,15) of said aforementioned external gear (13) and the aforementioned external gear (13) is at least partly dismantled in order to introduce said internal gear (9).

LOBED ROTOR WITH CIRCULAR SECTION FOR FLUID-DRIVING APPARATUS

A fluid displacement apparatus includes a stator section with a rotor therein. The stator section includes a cylindrical casing, a helically-convoluted chamber section within the cylindrical casing, and a rigid sleeve within the cylindrical casing and separate from the helically-convoluted chamber section. The rigid sleeve includes a circular internal bore. The rotor is rotatably disposed within the cylindrical casing. The rotor includes a helically-lobed section disposed within the helically-convoluted chamber section, and a circular cylinder section disposed within the rigid sleeve. The circular cylinder section provides a fluid passageway between the rigid sleeve and the circular cylinder section. Side loads from the rotor are distributed along a contact line at any point of rotation of the circular cylinder section within the rigid sleeve.

COMPOSITE MATERIAL FOR LOW-WEAR MECHANICAL COMPONENTS FOR FORCE AND MOTION TRANSMISSION

The invention relates to a composite material consisting of at least three components, a substrate material, a first fibrous reinforcement material and a second reinforcement material, the first fibrous reinforcement material having a coefficient of thermal expansion which is lower is than that of the second reinforcement material, and the second reinforcement material having an electrical conductivity which is lower than that of the first reinforcement material. The composite material is provided for uses in components for force and motion transmission, in particular provided for such components for force and motion transmission which come into contact with ultrapure water.

ROTARY PISTON MACHINE

Proposed is an electrically driven rotary piston machine which operates as a rotary piston pump or rotary piston compressor, having a base housing (1) which holds an electric coil (2) and a pump head (3), wherein the pump working space is preferably delimited by a trochoidal toothing of the rotors (15, 17). According to the invention, the pump head (3), which can usually be produced relatively cost-effectively, is designed as a disposable part and therefore has a quick-action connection (7, 10, 11, 12, 14) to the more expensive base housing (1).

ROTARY LOBE PUMP WITH DIRECT DRIVE

The invention relates to a rotary lobe pump comprising a pump housing with a pump chamber, an inlet and an outlet opening, a first multi-lobed rotary piston arranged in the pump chamber and rotatably mounted around a first axis and a second multi-lobed rotary piston arranged in the pump chamber which is rotatably mounted around a second axis spaced apart from the first axis and meshes with the first rotary piston, wherein the first and second rotary pistons, by rotating around the first and the second axis respectively, create a fluid flow from the inlet to the outlet opening, a drive unit which is mechanically coupled with the rotary pistons in order to drive the rotary pistons. According to the invention, the drive unit comprises a first electric drive motor, which is mechanically coupled with the first rotary piston for driving the first rotary piston, and a second electric drive motor, which is mechanically coupled with the second rotary piston for driving the second rotary piston.

HYDRAULIC MACHINE OF THE GEAR TYPE

The machine includes at least one set of two cooperating pinions rotating between two mobile bearing flanges which are mobile in translation in cavities provided in a median casing closed on the two opposite sides thereof by anterior and posterior covers. Each of these two bearing flanges is substantially pressure equilibrated by a suitable sealing system arranged between this bearing flange and the adjacent cover. The bearing flanges supporting the pinions are floatingly mounted inside the median casing, and pressure means are provided to press the bearing flanges against the median casing and cause a differential pressure pressing the bearing flanges against side faces of the pinions.

Spiral compression device

GEAR PUMP, PROVIDED ESPECIALLY AS HIGH PRESSURE PUMP WITH FUEL

COOLING PAD; COOLING APPARATUS; COOLING SYSTEM AND METHOD FOR OPERATING A COOLING PAD AND A COOLING APPARATUS

A cooling pad (10) for medical or veterinary applications, the cooling pad comprising a first heat exchanger (20); a second heat exchanger (30), a heat transfer fluid; a piping system (40); and an integrated pump device (50) for the heat transfer fluid; wherein the first heat exchanger (20) and the second heat exchanger (30) have the heat transfer fluid flowing through them; wherein the piping system (40) fluidically connects the first heat exchanger and the second heat exchanger; wherein the pump device (50) is adapted to cause an exchange of the heat transfer fluid between the first heat exchanger and the second heat exchanger; wherein the cooling pad (10) comprises a hermetically sealed fluid circuit for the heat transfer fluid, the fluid circuit comprising the first heat exchanger (20), the second heat exchanger (30), the piping system (40) and the pump device (50). Further, a corresponding cooling device (60), cooling system (1) and corresponding method (200) are proposed.

Screw compressor unit

In a capacity-adjustable screw compressor unit, a thrust force caused by a reaction force of gas can be appropriately cancelled by a balance piston. A screw compressor unit of the present invention includes a compressor, having a pair of male and female screw rotors meshing with each other contained in a casing, for compressing sucked gas and discharging it, a balance piston for pressing a rotor shaft acting as a rotating shaft of at least one of the screw rotors in an axial direction by a fluid pressure, a slide valve for adjusting capacity of the compressor, and a balance piston control device for adjusting pressure of a fluid applied on the balance piston according to the capacity of the compressor calculated from a position of the slide valve.

НАСОСНАЯ УСТАНОВКА, В ЧАСТНОСТИ, ДЛЯ СМАЗКИ ВЕРТОЛЕТА

Изобретение относится к насосной установке для смазки в вертолетах. Насосная установка (1) содержит приводной вал (3), проходящий по продольной оси, кожух (2), содержащий боковую стенку (8), ограничивающую входное окно (38) и нагнетательное окно, заднюю стенку (9) и переднюю стенку, противоположные друг другу, и поперечные оси, средство нагнетания, смонтированное в кожухе (2) и содержащее два роторных насоса (34), проходящих вдоль соответствующих осей параллельно продольной оси. Насосы (34) являются диаметрально противоположными. Установка содержит трансмиссию (66), которая распределяет движение вала (3) между насосами (34). Трансмиссия (66) помещена в отсек кожуха (2). Передняя стенка имеет осевое отверстие (13), через которое установлен вал (3). Кожух (2) имеет маслопровод, соединяющий нагнетательное окно с отверстием (13). Изобретение направлено на создание насосной установки, способной достигать относительно высокой объемной производительности, и предохранять от кавитации без увеличения ...

РОТОР, ВКЛЮЧАЮЩИЙ ПОВЕРХНОСТЬ С ЭВОЛЬВЕНТНЫМ ПРОФИЛЕМ

Изобретение относится к области машиностроения, в частности к конструкциям зубчатых передач, применяемых в устройствах преобразования энергии, распределительных или делительных передачах. Коническая зубчатая передача содержит первый ротор и второй ротор. Оси вращения первого ротора и второго ротора отклонены от коллинеарности и пересекаются. Каждый ротор содержит по меньшей мере один выступ, имеющий первую сторону и вторую сторону. Первая сторона каждого выступа представляет собой изогнутую поверхность, образованную по меньшей мере одним сферическим эвольвентным профилем. Выступы первого ротора входят в зацепление с выступами второго ротора по периферии роторов. Один или более зубьев первого ротора контактируют с зубьями противолежащего для передачи крутящего момент от первого зубчатого ротора к противолежащему зубчатому ротору. Отдельные зубья первого ротора обеспечивают устранение люфта, при этом устранение люфта и передача крутящего момента не происходят на одном и том же зубе каждого ...

ШЕСТЕРЕННЫЙ НАСОС

Шестеренный насос предназначен для нагнетания рабочей жидкости под высоким давлением в гидравлические системы автомобилей, тракторов, сельскохозяйственных, дорожно-строительных и другой транспортной техники, в маслосистемы различных газоперекачивающих агрегатов и также для перекачки нефтепродуктов, агрессивных и неагрессивных жидкостей. Шестеренный насос состоит из корпуса 1, крышки 2, компенсаторов 3, манжет 4, ведущей шестерни 5 и ведомой шестерни 6. Корпус 1 имеет отверстие 7 для подвода рабочей жидкости в насос и отверстие 8 для ее отвода из него, внутренние параллельные расточки 9 большого диаметра, в которых размещены компенсаторы 3, манжеты 4 и наружные зубчатые венцы 11 ведущей шестерни 5 и ведомой шестерни 6. Также корпус 1 еще имеет внутренние параллельные расточки 10 меньшего диаметра. Крышка 2 имеет внутренние параллельные расточки 10 меньшего диаметра. Во внутренних параллельных расточках 10 корпуса 1 и крышки 2 размещены цапфы 12 шестерен 5 и 6. Ведущая шестерня 5 состоит ...

ОДНОВИНТОВОЙ ЭКСЦЕНТРИКОВЫЙ НАСОС

... 1. Одновинтовой эксцентриковый насос, включающий:ротор с наружной винтовой нарезкой; истатор, выполненный с возможностью введения в него ротора и содержащий:внутреннюю часть, имеющую цилиндрическую форму и выполненную целиковой так, что она имеет внутреннюю периферийную поверхность с внутренней винтовой нарезкой; ивнешнюю цилиндрическую часть, установленную с натягом на внешней периферии внутренней части,причем внутренняя часть содержит у обоих своих краев кольцевые части, выступающие по радиусу наружу,внешняя цилиндрическая часть расположена между кольцевыми частями, икрая внешней цилиндрической части упираются в кольцевые части, соответственно.2. Насос по п.1, в котором внешняя цилиндрическая часть выполнена с возможностью разделения в своем окружном направлении на несколько компонентов внешнего цилиндра.3. Насос по п.1 или 2, содержащий торцевой фланец, расположенный на одном краю статора,причем торцевой фланец и торец корпуса насоса, соединенный с другим краем статора, соединены и скреплены ...

НАСОСНАЯ УСТАНОВКА, В ЧАСТНОСТИ ДЛЯ СМАЗКИ ВЕРТОЛЕТА

... 1. Насосная установка, в частности для смазки в вертолетах, содержащая:приводной вал, проходящий по продольной оси;кожух, содержащий:а) боковую стенку, ограничивающую входное окно и нагнетательное окно;b) заднюю стенку и переднюю стенку, противоположные друг другу и поперечные упомянутой продольной оси;средство нагнетания, смонтированное в упомянутом кожухе;насосная установка, отличающаяся тем, что упомянутое средство нагнетания содержит два роторных насоса и трансмиссию, которая распределяет движение упомянутого приводного вала между этими роторными насосами.2. Насосная установка по п.1, отличающаяся тем, что упомянутые роторные насосы проходят вдоль соответствующих осей параллельно упомянутой продольной оси и являются диаметрально противоположными.3. Насосная установка по п.1 или 2, отличающаяся тем, что упомянутая трансмиссия является редуктором.4. Насосная установка по п.1, отличающаяся тем, что упомянутая трансмиссия содержит приводной механизм, образующий одно целое с упомянутым приводным ...

ШЕСТЕРЕННЫЙ НАСОС ОБЪЕМНОГО ТИПА

Kältemittelverdichteranlage

Um eine Kältemittelverdichteranlage umfassend mindestens eine Niederdruckstufe und mindestens eine Hochdruckstufe, einen ausgehend von einem Sauganschluss für das Kältemittel zu der Niederdruckstufe führenden Saugkanal, einen von der Niederdruckstufe zu der Hochdruckstufe führenden Zwischendruckkanal, einen mit der Hochdruckstufe verbundenen Hochdruckanschluss sowie ein mit dem Zwischendruck im Zwischendruckkanal beaufschlagtes Schmiermittelbad, derart zu verbessern, dass stets eine ausreichende Schmiermittelversorgung für die Niederdruckstufe gewährleistet ist, wird vorgeschlagen, dass eine Schmiermittelzufuhreinrichtung Schmiermittel aus dem Schmiermittelreservoir entnimmt und dem zur Niederdruckstufe in einem Ansaugpfad strömenden angesaugten Kältemittel zuführt.

Selectable flow hydraulic gear pump

Lubrication system automatic refill shutoff

A lubrication system comprises a lubricant reservoir, a inlet into the lubricant reservoir, a diaphragm plate, an actuator pin, a refill inlet, a refill outlet, and a shutoff valve. The diaphragm plate is disposed at a topmost location within the lubricant reservoir. The actuator pin is coupled to the diaphragm plate such that filling the lubricant reservoir drives the actuator pin from a first position to a second position. The refill inlet is configured to receive lubricant, and the refill outlet is fluidly connected to the inlet of the lubricant reservoir. The shutoff valve is connected between the refill inlet and the refill outlet, and actuated by the actuator pin so as to fluidly connect the refill inlet and refill outlet when the actuator pin is in the first position, and fluidly isolate the refill inlet from the refill outlet when the actuator pin is in the second position.

ROTORS FORMED USING INVOLUTE CURVES

The present disclosure describes the use of involute curves for use in energy conversion devices, as well as timing or indexing gears. Several different embodiments are shown using rotors of several examples of lobe numbers and shapes.

POSITIVE DISPLACEMENT GEAR PUMP

L'invention concerne une pompe à déplacement positif (1), qui comprend un carter ayant un corps central (2) et deux couvercles de fermeture, ledit corps central (2) comprenant deux chambres cylindriques (22, 23) communiquant l'une avec l'autre, un tuyau d'aspiration (I) et un tuyau de refoulement (0), et deux rotors (3, 4) montés de façon rotative dans lesdites chambres (22, 23) du corps central (2) et supportés par des arbres montés de façon rotative dans lesdits couvercles de fermeture. Les deux rotors (3, 4) comprennent : un rotor mâle (3) comprenant uniquement des saillies (30), mais pas de cavités, et un rotor femelle (4) comprenant uniquement des cavités (40), mais ni des dents ni des saillies.

POSITIVE DISPLACEMENT GEAR PUMP

VARIABLE DISPLACEMENT GEAR PUMP

The present invention relates to a variable displacement gear pump. According to the present invention, the variable displacement gear pump moves one of two gears engaged inside a casing of an existing gear pump in an axial direction to vary a width between two engaged gears, so as to control a discharge amount. The variable displacement gear pump comprises: a gear ring to prevent fluid from leaking out between a gear out of a casing in accordance with movement of the gear and a casing cover, or between the gear and the gear block; a gear block to prevent the fluid from leaking out between the gear and the casing, or between a side surface of the gear and the gear; and a gear block hole into which the gear block is penetrated. According to the present invention, since a structure of the variable displacement gear pump can be used as the variable displacement gear pump without modification, variable displacement is realized while maintaining characteristics of a gear pump and a gear motor ...

sistema de lubrificação

Oil pump

Certain preferred embodiments of the present invention provide an oil pump which is both light as well as compact. Accordingly, certain presently preferred embodiments disclose an oil pump having a housing comprising aluminum, and at least one mobile molded part therein. The mobile molded part being at least partially made from a sinterable composition comprising at least one austenitic iron-based alloy powder. The mobile molded part also has a heat expansion coefficient, which amounts to at least 60% of the heat expansion coefficient for the oil pump housing.

G-rotor pump

Disclosed is a G-rotor pump in which a lid and a bottom of a pump housing are made of plastic. A spacer that supports the bottom is produced as a single piece with the lid, whereby the G-rotor pump can be embodied in a particularly inexpensive manner.

ELECTRIC OIL PUMP

An electric oil pump includes a pump housing, a pump rotor assembly, a stator assembly, a motor rotor assembly and an electric control board, the pump housing defining a pump cavity including first cavity and second cavities, the pump rotor assembly arranged in the first cavity, and the stator assembly, the motor rotor assembly and the electric control board arranged in the second cavity. The pump housing includes a first housing having a side wall with inner and outer surfaces, at least a part of the inner surface is in contact with at least a part of an outer wall of the stator assembly, the outer surface is provided with or shaped with a first heat dissipating portion, at least a part of the first heat dissipating portion covers at least a part of an outer circumference of the stator assembly in a circumferential direction of the electric oil pump.

ШЕСТЕРЕННЫЙ НАСОС ОБЪЕМНОГО ТИПА

Изобретение относится к шестеренному насосу объемного типа. Объемный насос (1) содержит корпус с центральным телом (2) и две крышки (20). Тело (2) снабжено двумя сообщающимися цилиндрическими камерами (22, 23), одной всасывающей трубой (I) и одной выпускной трубой (O). Насос (1) также содержит два ротора (3, 4), установленных в камерах (22, 23) на валах (5, 6), установленных в крышках (20). Оба ротора содержат ведущий ротор (3) с выпуклостями (30) и ведомый ротор (4) с полостями (40). Каждая выпуклость (30) в поперечном сечении содержит две эвольвентные поверхности (31, 32), сходящиеся в закругленную головку (33). Поверхности (31, 32) симметрично расположены относительно радиальной оси симметрии, проходящей через головку (33). Каждая полость (40) в поперечном сечении содержит две эвольвентные поверхности (41, 42), соединенные в нижней поверхности (43) с вогнутым профилем. Профили обеих поверхностей (41, 42) полости расположены несимметрично относительно радиальной прямой, проходящей через ...

РОТОРНЫЙ ОБЪЕМНЫЙ НАСОС С МАЛЫМИ РАДИАЛЬНЫМИ РАЗМЕРАМИ

Изобретение относится к роторному объемному насосу с малыми радиальными размерами. Роторный насос состоит из внешнего зубчатого колеса 13 с множеством внутренних зубьев 16 в виде беличьей клетки и внутреннего зубчатого колеса 9, размещенного со смещением относительно центра внутри внешнего зубчатого колеса 13 и снабженного множеством внешних зубьев, входящим во взаимное зацепление с множеством внутренних зубьев 16 и имеющим меньшее на единицу число зубьев относительно числа зубьев последнего. Средство вращения множества внешних зубьев 13 содержит подшипники 11, 12, центрально лежащие на фланцах торцов 14, 15 внешнего зубчатого колеса 13. Внешнее зубчатое колесо 13 является частично разбираемым, чтобы вставить указанное внутреннее зубчатое колесо 9. Изобретение направлено на уменьшение радиальных размеров насоса с одновременным обеспечением установления и извлечения внутреннего зубчатого колеса из внешнего. 2 н. и 7 з.п. ф-лы, 9 ил.

ШЕСТЕРЕННЫЙ НАСОС

Шестеренный насос предназначен для нагнетания рабочей жидкости в гидросистемы автомобилей, тракторов, сельскохозяйственных, дорожно-строительных и другой транспортной техники, для перекачивания нефтепродуктов и других неагрессивных жидкостей, а также для подачи рабочей жидкости в маслосистемы различных газоперекачивающих агрегатов. Шестеренный насос содержит крышку 1, корпус 2, ведомую шестерню 3, ведущую шестерню 4, компенсаторы 5, манжеты 6, подшипники 7 и капсулу 8. Крышка 1 и корпус 2 имеют по две одинаковые параллельные расточки 9. Корпус 2 имеет еще центральную расточку 10. Ведомая шестерня 3 и ведущая шестерня 4 состоят из зубчатого венца 11 и двух цапф 12. Ведущая шестерня 4 еще имеет приводной шлицевой конец 13. Подшипники 7 имеют отверстие 14. В капсуле 8 размещены два сквозных параллельных отверстия 15. По всей длине наружной поверхности 16 цапф 12 шестерен 3 и 4 расположены продольные пазы 17. Продольные пазы 17 состоят из дна 18, боковых стенок 19, нижних радиусных скруглений ...

Центробежно-шестеренный насос

Изобретение относится к насосам, применяемым в маслосистемах авиационных газотурбинных двигателей для подачи и откачки масла. Центробежно-шестеренный насос содержит шестерни 2, размещенные в расточках корпуса 1 и установленные на валах 3, расположенных в опорных подшипниках 4, каналы 9, выполненные в ступицах шестерен 2 с заборными отверстиями 16 для подвода жидкости в межзубовые полости 10, дросселирующие иглы 13, установленные перед отверстиями 16 с возможностью осевого перемещения и снабженные устройством для ограничения хода иглы 13. Насос снабжен стержнем 12, установленным соосно центральной расточке 11, выполненной внутри каждой из шестерен 2. Игла 13 установлена на стержне 12, подпружинена со стороны шестерни 2 и соединена со стержнем 12 с возможностью свободного осевого хода. Конец стержня 12 пропущен через шестерню 2 внутрь вала 3 и зафиксирован в нем штифтом 18, запрессованным в совместно обработанные радиальные отверстия в стержне 12 и валу 3, расположенные под ближайшим к шестерне ...

Способ работы маслоагрегата газотурбинного двигателя (ГТД) и маслоагрегат ГТД, работающий этим способом (варианты)

Группа изобретений относится к области авиадвигателестроения. Маслоагрегат включает откачивающий и нагнетающий насосы с общими валами. На валах устанавливают две пары шестеренных колес насосов и наделяют каждое с торцов подпятниками, снабженными входными и выходными каналами. Подпятники выполнены конструктивно и гидродинамически адаптированными под рабочие параметры зубьев и межзубных впадин зубчатых венцов шестеренных колес. Подпятники совместно с соответствующими шестеренными колесами ОН и НН формируют последовательные участки двух независимых масляных трактов МА. Один из валов выполняют ведущим, сообщенным по крутящему моменту с источником энергии, и наделяют ведомым колесом ОН и ведущим колесом НН, который передает энергию вращения на ведомое колесо НН, установленное на втором ведомом валу. Ведомый вал НН на участке ОН наделяют функцией ведущего, передавая крутящий момент от ведущего вала НН через шестеренную передачу рабочих колес НН на ведущее колесо ОН и далее на ведомое колесо ОН ...

Маслоагрегат

Изобретение относится к шестеренным гидромашинам и может быть использовано в гидросистемах различных машин, в том числе и в маслосистемах газотурбинных двигателей. Маслоагрегат содержит корпус 1 с установленными в нем соосно на двух общих валах 2, 3, один из которых приводной, откачивающей и нагнетающей насосными секциями с торцовым подводом масла к шестерням 4, 5, 6, 7. В корпусе с двух сторон каждой шестерни установлены подпятники 8, 9, 10, 11, в торцах которых выполнены дугообразные каналы подвода масла в междузубовые каналы впадины шестерен, причем в подпятниках 10, 11, установленных в шестернях 6, 7 нагнетающей секции насоса, внутренняя боковая стенка дугообразного канала выполнена под углом 30-60° к оси шестерни в сторону увеличения проходного сечения канала. Подпятники 8, 9, расположенные с тыльной стороны шестерен 4, 5 откачивающей секции, установлены в корпус со свободным осевым ходом в пределах торцового зазора в шестерне и подпружинены в направлении к шестерням в подпятнике, ...

ШЕСТЕРЕНЧАТЫЙ НАСОС С ВНЕШНИМ ЗАЦЕПЛЕНИЕМ, ОБЪЕДИНЕННЫЙ С ДВУМЯ НЕЗАВИСИМО ПРИВОДИМЫМИ В ДЕЙСТВИЕ ПЕРВИЧНЫМИ ПРИВОДАМИ

СПОСОБ КОМПЕНСАЦИИ ПОТЕРЬ ИЗ-ЗА УТЕЧЕК И ТРАНСПОРТИРУЮЩАЯ СИСТЕМА ДЛЯ ПЕРЕМЕЩЕНИЯ ОПРЕДЕЛЕННОГО ОБЪЕМА ЖИДКОСТИ

Zahnrad mit Druckausgleichstasche

Zahnrad (1) für eine Zahnradpumpe, das eine Vielzahl von Zähnen (2) aufweist, wobei jeder der Zähne (2) eine erste axiale Stirnseite (3), eine zweite axiale Stirnseite (4), eine in Rotationsrichtung des Zahnrads (1) treibende Flanke (7) und eine getriebenen Flanke (6), einen Zahnfuß und einen Zahnkopf umfasst, wobei zumindest eine Tasche (5) in wenigstens einer der Flanken (6, 7) wenigstens eines der Zähne (2) eingebracht ist, wobei die Tasche (5) von einer der Stirnseiten (3, 4) und der wenigstens einen Flanke (6, 7) zugänglich ist.

Gear pump driven gear stationary bearing

VACUUM PUMP STATORS AND VACUUM PUMPS

Combined booster and primary pump arrangements can be bulky and require separate supplies of purge gas and cooling water. In order to overcome this problem invention provides a vacuum pump in which two or more pumping mechanisms, i.e. the booster pump 52 and main pump 54, are housed in the same stator 56 forming a multi stage vacuum pump 50 with a clam-shell casing. The invention further provides a vacuum pump stator comprising at least two cavities 64 operatively interconnected by a through hole 70 such that the outlet of booster pump 52 is connected to the inlet of the main pump 54 , wherein at least two of the cavities each comprise at least one rotor-receiving portion shaped to receive two or more at least partially intermeshing rotors 66, 68, and wherein an axis of a rotor-receiving portion of a first one of the cavities is offset with respect to an axis of a rotor-receiving portion of a second one of the cavities.

A claw pump

A claw pump, comprising a stator element 50, two cooperating rotor elements 40,42 mounted on parallel shafts and each having a claw shaped profile, at least one gas feed inlet 20 for inputting a gas flow into the pump, and at least one outlet 30,32 for outputting the gas flow from the pump. A first of the rotor elements comprises a first cross sectional area 43 along at least a first longitudinal length of the rotor element and a larger cross sectional area 44 along at least one further longitudinal length of the rotor element, the larger cross sectional area providing a surface of the rotor element that intermittently covers and uncovers at least one of the at least one outlets during rotor rotation. The two rotors may intermesh. The rotors may have multiple sections with different cross-sectional areas. The rotor claws may extend substantially towards the chamber wall. The outlet may be located in an axial end surface or a radially outer surface, or a combination of the two.

PROCEDURE AND CIRCUIT FOR THE CONTROLLING OF THE ENTERPRISE OF A PUMP

SCREW ROTOR SET

HYDRAULIC POSITIVE-DISPLACEMENT ENGINES

Fluid compressor or pump apparatus

The present invention relates to an apparatus which may be in the form of a pump or compressor and which can function to compress or accelerate a fluid such as air, gas, gaseous mixtures and/or liquid. In particular, the invention provides a mechanism in which fluid can be admitted and then discharged continuously from each of the radial compartments that make up the compressor chamber.

Lubricating pinion and lubricating device

Pin joint for an eccentric screw pump

The invention relates to a pin joint for eccentric screw pumps. The special design of the inner joint head of the pin joint, with its bores for the flushing liquid and the length of the joint pin, makes it possible also to carry out cleaning using the CIP method.

POSITIVE DISPLACEMENT GEAR PUMP

A positive displacement pump (1) comprises a casing with a central body (2) and two closing lids (20), said central body (2) being provided with two cylindrical communicating chambers (22, 23), one suction pipe (I) and one discharge pipe (O), and two rotors (3, 4) revolvingly mounted in said chambers (22, 23) of the central body and supported by shafts (5, 6) revolvingly mounted in said closing lids (20). The two rotors comprise: a male rotor (3) comprising only protuberances (30), not cavities, and a female rotor (4) comprising only cavities (40), not teeth or protuberances.

LOBED ROTOR WITH CIRCULAR SECTION FOR FLUID-DRIVING APPARATUS

A fluid displacement apparatus includes a stator section with a rotor therein. The stator section includes a cylindrical casing, a helically-convoluted chamber section within the cylindrical casing, and a rigid sleeve within the cylindrical casing and separate from the helically-convoluted chamber section. The rigid sleeve includes a circular internal bore. The rotor is rotatably disposed within the cylindrical casing. The rotor includes a helically-lobed section disposed within the helically-convoluted chamber section, and a circular cylinder section disposed within the rigid sleeve. The circular cylinder section provides a fluid passageway between the rigid sleeve and the circular cylinder section. Side loads from the rotor are distributed along a contact line at any point of rotation of the circular cylinder section within the rigid sleeve.

UNIAXIAL ECCENTRIC SCREW PUMP

Provided is a uniaxial eccentric screw pump in which a stator can be readily separated into an outer cylinder and a lining member, and in which problems such as position deviation and deformation of the lining member and the accompanying offset abrasion and unstable discharge amount can be eliminated. A stator (20) comprises: a one-piece cylindrical liner part (22) having a female thread on the inner circumferential surface thereof; and an outer cylinder part (24). Flange parts (26, 26) are provided protruding radially outward at both end parts of the liner part (22), and an outer cylinder fitting part (28) is provided between the flange parts (26, 26). The outer cylinder part (24) is fitted to the outer cylinder fitting part (28) in a non-adhesive state, and both parts of the outer cylinder part (24) are brought into contact with the flange parts (26, 26).

UNIAXIAL ECCENTRIC SCREW PUMP

Provided is a uniaxial eccentric screw pump enabling a stator to be easily separated into an outer cylinder and a lining member, and being capable of solving problems such as a positional shift and deformation of the lining member, and an occurrence of uneven wear and an unstable discharge amount associated with the positional shift and deformation. A stator (20) includes: a liner portion (22) having a cylindrical shape and being integrally formed so as to have an inner peripheral surface of an internal thread type; and an outer cylinder portion (24) . The liner portion (22) includes, at both end portions thereof, flange portions (26, 26) protruding radially outward, and an outer cylinder mounting portion (28) is provided between the flange portions (26, 26) . The outer cylinder portion (24) is mounted in a non-bonded state on the outer cylinder mounting portion (28) , and both end portions of the outer cylinder portion (24) abut on the flange portions (26, 26) , respectively.

SPUR GEAR WITH EPI-CYCLOIDAL AND HYPO-CYCLOIDAL TOOTH SHAPES

A spur pump gear system comprising; a housing have a sealed chamber communicating with an intake port and a discharge port; a shaft journalled for rotation within said chamber; a drive spur gear mounted concentrically on said shaft about a first axis within said chamber and having a drive gear pitch circle, said drive spur gear having epi and hypo cycloid tooth profiles generated about the pitch circle of the drive spur gear; a driven spur gear disposed internally within said chamber for rotation about a second axis and having a driven gear pitch circle, said driven spur gear having epi and hypo cycloid tooth profiles generated about the pitch circle of the driven gear; said epi hypo cycloid tooth profile of said drive spur gear engagedly driving said hypo cycloid tooth profile of said driven spur gear.

POSITIVE DISPLACEMENT GEAR PUMP POSITIVE DISPLACEMENT GEAR PUMP.

SEALING ARRANGEMENT, A CONVEYING DEVICE HAVING A SEALING ARRANGEMENT AND A METHOD FOR OPERATING THE SEALING ARRANGEMENT

The invention relates to a sealing arrangement (1) for conveying devices, in particular for gear pumps, in which an inner space (5) can be sealed off from an outer space (6), wherein the sealing arrangement comprises at least two parts (2, 3) each having at least one sealing surface (20, 21), wherein the sealing surfaces (20, 21) comprise: a first seal (11) along a first, medial perimeter of the sealing surface (20, 21), a second seal (12) along a second, lateral perimeter of the sealing surface (20, 21), a recess (15) between the first seal (11) and the second seal (12), characterized in that the recess (15) can be connected to a source (30) of a flushing medium such that the recess (15) can be actively flushed with the flushing medium.

METHOD AND APPARATUS FOR MULTI-STREAM METERED EXTRUSION

An extrusion apparatus for extruding multiple streams of extrusion material as extruded end-products and in the coating of substrates. A flow joiner in an extrusion head combines multiple metered streams, such as from a gear pump, into a uniform extrusion flow.

ROTORS FORMED USING INVOLUTE CURVES

The present disclosure describes the use of involute curves for use in energy conversion devices, as well as timing or indexing gears. Several different embodiments are shown using rotors of several examples of lobe numbers and shapes.

ШЕСТЕРЕНЧАТЫЙ НАСОС

Изобретение относится к шестеренчатому насосу, преимущественно для подачи лаковых красок. Шестеренчатый насос содержит две находящиеся в зацеплении шестерни 4, 5, которые посредством приводимого в действие приводного вала 7 и опорной цапфы 21 установлены с возможностью вращения в корпусе 1 и между впускным отверстием и выпускным отверстием образуют систему 6 нагнетательных каналов, и с несколькими зазорами, образованными между корпусом 1, шестернями 4, 5, приводным валом 7, и опорной цапфой 21. Один из зазоров образован между приводным валом 7 и одной из шестерен 4. В этом зазоре расположено соединительное средство 9 для соединения без возможности поворота приводного вала 7 с шестерней 4. Зазор между приводным валом 7 и шестерней 4 уплотнен по отношению к торцам шестерни 4 с помощью уплотнительного средства 14.1, 14.2. Изобретение направлено на усовершенствование шестеренчатого насоса, в котором соединенные с системой нагнетательных каналов зазоры в корпусе насоса были легко промываемыми ...

СПОСОБ КОМПЕНСАЦИИ ПОТЕРЬ ИЗ-ЗА УТЕЧЕК И ТРАНСПОРТИРУЮЩАЯ СИСТЕМА ДЛЯ ПЕРЕМЕЩЕНИЯ ОПРЕДЕЛЕННОГО ОБЪЕМА ЖИДКОСТИ

Изобретение предназначено, в частности, для изобарного дозирования жидких пластмассовых компонентов и относится к способу и устройству для компенсации потерь из-за утечек в поточной системе (14), в которой установлены по меньшей мере один объемный насос (15) и по меньшей мере один отключающий элемент (16). Фактическое давление жидкости в системе определяют посредством устройства (17) для измерения давления и регулируют, доводя его до целевого значения давления, когда закрыт отключающий элемент (16), посредством приведения в действие объемного насоса (15). Для компенсации потери из-за утечек, происходящей при соответствующем целевом значении давления, к целевому расходу (Qs) добавляют расход (Qv) для компенсации потерь объемного насоса, обеспечивающего поддержание целевого значения давления, когда отключающий элемент закрыт. Учитывается потеря из-за утечек во время дозированной подачи компонентов в смесительную головку. 2 н. и 5 з.п. ф-лы, 1 ил.

ОДНОВИНТОВОЙ ЭКСЦЕНТРИКОВЫЙ НАСОС (ВАРИАНТЫ)

Группа изобретений относится к одновинтовому эксцентриковому насосу, в котором статор может быть легко разделен на внешний цилиндрический и внутренний элементы. Статор (20) содержит целиковую цилиндрическую внутреннюю часть (22), имеющую охватывающую винтовую нарезку на своей внутренней периферийной поверхности, и внешнюю цилиндрическую часть (24). Обеспечены также фланцевые части (26), выступающие по радиусу наружу у обоих краев внутренней части (22), и внешняя установочная часть (28) между фланцевыми частями (26). Внешняя цилиндрическая часть (24) плотно прилегает к цилиндрической установочной части (28) без склеивания с ней, и обе составляющие внешней цилиндрической части (24) приводятся в контакт с фланцевыми частями (26). Изобретение направлено на устранение таких проблем, как отклонение положения и деформация внутреннего элемента, а также сопутствующие им истирание при смещении и нестабильность выходных параметров. 2 н. и 12 з.п. ф-лы, 13 ил.

НАСОС СЕКЦИОННЫЙ

Изобретение относится к области транспортного машиностроения, а именно к конструкции секционных шестеренных насосов. Секционный насос содержит две и более секции, разделенные между собой промежуточной пластиной, ведомые шестерни, свободно установленные на общем для секций насоса ведомом валике, ведущие шестерни, установленные на общем для секций насоса ведущем валике с возможностью перемещения вдоль его оси и соединенные с ним, подшипники скольжения, являющиеся опорами валиков, стопорные кольца, установленные в канавках ведущего валика и расположенные с противоположных сторон одной из ведущих шестерен. На поверхности промежуточной пластины выполнена проточка, в которой располагается одно из стопорных колец. На поверхности ведущей шестерни, противоположной промежуточной пластине, выполнена проточка, в которой располагается второе стопорное кольцо. Изобретение направлено на исключение перемещения ведущего валика в осевом направлении при применении в качестве его опор подшипников скольжения ...

АВТОМАТИЧЕСКОЕ ПЕРЕКРЫТИЕ ПОПОЛНЕНИЯ СИСТЕМЫ СМАЗКИ

Изобретение относится к автоматической подсистеме перекрытия пополнения для мобильной системы смазки. Система смазки содержит резервуар смазки, впускное отверстие в резервуар смазки, пластину диафрагмы, стопорный штифт, впускное отверстие пополнения, выпускное отверстие пополнения и стопорный клапан. Пластина диафрагмы расположена в самом верхнем положении в резервуаре смазки. Стопорный штифт соединен с пластиной диафрагмы, так что наполнение резервуара смазки переводит стопорный штифт из первого положения во второе положение. Впускное отверстие пополнения приспособлено принимать смазку, и выпускное отверстие пополнения жидкостно соединено с впускным отверстием резервуара смазки. Стопорный клапан присоединен между впускным отверстием пополнения и выпускным отверстием пополнения и приводится в действие стопорным штифтом, так чтобы жидкостно соединять впускное отверстие пополнения и выпускное отверстие пополнения, когда стопорный штифт находится в первом положении, и жидкостно изолировать ...

МАСЛЯНЫЙ НАСОС

Полезная модель относится к автомобилестроению, в частности, к системам смазки двигателя внутреннего сгорания. Масляный насос ДВС содержит корпус (1) с крышкой (2), выполненные фасонными и соединенные между собой посредством резьбовых элементов (3). В корпусе (1) установлены ведущая шестерня (4), напрессованная на вал (5), ведомая шестерня (6), напрессованная на вал (7). В расточках корпуса в местах установки валов (5, 7) жестко закреплены переходные втулки (8), которые являются опорами для валов шестерен. В крышке (2) установлены редукционный клапан (12), управляемый по давлению масла в канале (13) главной масляной магистрали, предохранительный клапан (14), работающий по давлению в нагнетательной полости (10). Технический результат заключается в создании простой и надежной конструкции масляного насоса. 5 ил.

Gear root geometry for increased carryover volume

A gear includes a gear root defined by a stretched root blended into an involute tooth profile curve within a True Involute Form diameter.

Meat processing assembly

An improved processing assembly having a meat emulsion pump connected to a stuffing horn. The stuffing horn positioned to fill casings with meat emulsion which form a strand of processed meat that is received by a twister, then a linker, and subsequently deposited on a conveyor.

External Gear Pump for Hot Cooking Oil

An overhung external spur gear positive displacement pump for hot oil or deep fryer applications is disclosed. The external gear pump includes a casing that includes a through bore for accommodating a drive shaft that leads to a pump chamber that accommodates a drive gear and a driven gear. The casing further includes a recess connected to the pump chamber for accommodating a stationary pin. The casing also includes a proximal end coupled to a prime mover and a distal end coupled to a head. The gears are enclosed in the pump chamber by the head. The stationary pin is accommodated within the driven gear and the drive shaft is coupled to the drive gear. The head is provided in the form of a flat plate with a plurality of holes for accommodating fasteners that couple the head to the distal end of the casing.

Scroll compressor

A scroll compressor is provided that may include a fixed scroll having a fixed wrap, an orbiting scroll engaged with the fixed wrap to define a compression chamber, a rotation shaft having a shaft portion eccentrically located with respect to the orbiting scroll, a pin portion located at an end of the shaft portion and having a diameter smaller than a diameter of the shaft portion, and a bearing located at an end of the pin portion, and a drive that drives the rotation shaft. The pin portion may be inserted through one of the fixed scroll or the orbiting scroll, and the orbiting scroll may be rotatably coupled to the bearing.

Fluid Energy Transfer Device

A rotary chambered fluid energy-transfer device includes a housing with a central portion having a bore formed therein and an end plate forming an arcuate inlet passage, with a radial height and a circumferential extent. The device also includes an outer rotor rotatable in the central portion bore with a female gear profile formed in a radial portion defining a plurality of roots and an inner rotor with a male gear profile defining a plurality of lobes in operative engagement with the outer rotor. A minimum radial distance between an outer rotor root and a corresponding inner rotor lobe define a duct end face proximate the end plate, wherein the duct end face has a radial height substantially equivalent to the inlet passage radial height at a leading edge of the inlet passage.

VEHICULAR INTERNAL GEAR TYPE OIL PUMP

An oil pump includes a first spill passage formed on a side surface () of a pump chamber () to communicate a hydraulic pressure chamber () with a first high pressure discharge passage () when the entire hydraulic pressure chamber () is positioned between the first high pressure discharge passage () and a first low pressure discharge passage (). Therefore, when the hydraulic pressure chamber () passes between the first high pressure discharge passage () and the first low pressure discharge passage (), the hydraulic pressure inside the predetermined hydraulic pressure chamber () escapes to the first high pressure discharge passage () through a first spill passage (), so a hydraulic pressure value inside the hydraulic pressure chamber () is maintained at the pressure value inside the first high pressure discharge passage (). As a result, fluid is inhibited from flowing into the hydraulic pressure chamber () from the first high pressure discharge passage () through a space between inner peripheral teeth () and outer peripheral teeth (). 1. A vehicular internal gear type oil pump including:a drive gear that has outer peripheral teeth and that is provided rotatable about an axis;an annular driven gear that has inner peripheral teeth that mesh with the outer peripheral teeth of the drive gear and that is provided rotatable about an offset axis that is offset from the axis, and that is rotatably driven by the drive gear;a pump chamber inside of which the driven gear and the drive gear are housed; anda housing that has a high pressure discharge passage and a low pressure discharge passage that are open, a predetermined distance apart from each other in a circumferential direction, to a side surface of the pump chamber, in order to discharge fluid from within the pump chamber,wherein a plurality of hydraulic pressure chambers, that are formed in the circumferential direction by a mesh gap between the inner peripheral teeth and the outer peripheral teeth, move in a ...

Two-Spindle Screw Pump of Double-Flow Construction

The invention relates to a twin screw pump of double-flow design with a pump housing, two bearing portions and at least one gear portion with at least one gear chamber, with feed screws with double-flow flanks arranged on two shafts, the feed screws on the shafts having a root diameter, the shafts being mounted in the bearing portions via bearings, a seal for sealing the bearing portion with respect to the conveying portion, with gearwheels arranged on the shafts in the gear portion, the shafts being rotatably coupled by means of said gearwheels, characterized in that on either side the inner diameter of the seal is greater than, or the same size as, the root diameter of the feed screws, and/or in that on either side the inner diameter of the bearing is greater than, or the same size as, the inner diameter of the seal. 15-. (canceled)6. Twin screw pump of double-flow design with a pump housing , which has a pump portion , two bearing portions and at least one gear portion with at least one gear chamber , the bearing portions and the pump portion being formed separately from one another , with a conveyor housing part as a component of the pump portion , in which feed screws with double-flow flanks arranged on two shafts are provided , the feed screws on the shafts having a root diameter , the shafts being mounted in the bearing portions via bearings (external bearing) , a seal for sealing the bearing portion with respect to the conveying portion being provided in the bearing portion , and the shafts extending at least on one side into the gear portion , with gearwheels arranged on the shafts in the gear portion , the shafts being rotatably coupled by means of said gearwheels , characterized in that on either side the inner diameter of the seal is greater than , or the same size as , the root diameter of the feed screws , and/or in that on either side the inner diameter of the bearing is greater than , or the same size as , the inner diameter of the seal.7. Screw pump ...

TWO STEP COMPRESSOR UNIT AND COMPRESSOR SYSTEM HAVING THE SAME

A compressor unit having a triple trochoidal rotor, which includes a first rotor, a second rotor, a third rotor, a casing, second and first suction ports, and second and first discharge ports; and a driving unit that rotates the three rotors such that external working fluid is sucked into the suction port and the working fluid sucked into the suction port is discharged to the discharge port in a state of being compressed. 1. A two-stage compressor unit comprising:a first rotor having a plurality of outwardly extending trochoidal gear teeth formed on an outer peripheral surface thereof and a stationary shaft securely fixed to a rotary center thereof;a second rotor configured to eccentrically accommodate the first rotor therein, the second rotor having a plurality of inwardly extending trochoidal gear teeth formed on an inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the second rotor are in line contact with the outwardly extending trochoidal gear teeth of the first rotor while being engaged with the trochoidal gear teeth of the first rotor, and a plurality of outwardly extending trochoidal gear teeth formed on an outer peripheral surface thereof, wherein a number of the inwardly extending trochoidal gear teeth of the second rotor is larger than that of the outwardly extending trochoidal gear teeth of the first rotor and a number of the outwardly extending trochoidal gear teeth of the second rotor is equal to that of the inwardly extending trochoidal gear teeth of the second rotor;a third rotor configured to eccentrically accommodate the second rotor therein, and having a plurality of inwardly extending trochoidal gear teeth formed on an inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the third rotor are in line contact with the outwardly extending trochoidal gear teeth of the second rotor while being engaged with the outwardly extending trochoidal gear teeth ...

Methods and Apparatus for Enhancing Elastomeric Stator Insert Material Properties with Radiation

A method for manufacturing a stator for a progressive cavity motor or pump comprises (a) forming an elastomeric stator insert. In addition, the method comprises (b) exposing the elastomeric stator insert to ionizing radiation. Further, the method comprises (c) positioning the elastomeric stator insert in a stator housing to form a stator. 1. A method for manufacturing a stator for a progressive cavity motor or pump , comprising:(a) forming an elastomeric stator insert;(b) exposing the elastomeric stator insert to ionizing radiation; and(c) positioning the elastomeric stator insert in a stator housing to form a stator.2. The method of claim 1 , wherein (b) comprises exposing the elastomeric stator insert to at least 100 KiloGrays of ionizing radiation.3. The method of claim 2 , wherein (b) comprises exposing the elastomeric stator insert to at least 500 KiloGrays of ionizing radiation.4. The method of claim 2 , wherein the ionizing radiation is ionizing X-ray radiation.5. The method of claim 2 , wherein the elastomeric stator insert is made from an elastomeric material selected from a group consisting of nitrile rubber claim 2 , hydrogenated nitrile (HNBR) claim 2 , ethylene propylene diene rubber (EPDM rubber) claim 2 , Chloroprene (neoprene) and fluoroelastomers (FKM).6. The method of claim 2 , wherein (a) comprises forming the elastomeric stator insert by an injection molding process or a transfer molding process.7. The method of claim 2 , wherein the stator housing has a radially inner cylindrical surface and the elastomeric stator insert has a radially outer cylindrical surface that engages the inner cylindrical surface of the stator housing after (c).8. The method of claim 1 , wherein (b) comprises exposing the elastomeric stator insert to ionizing radiation selected from a group consisting of alpha rays claim 1 , beta rays claim 1 , gamma rays claim 1 , neutron rays claim 1 , proton rays claim 1 , UV rays claim 1 , and X-rays.9. The method of claim 2 , wherein ...

Double internal gear wheel pump

A double internal gear wheel pump includes two internal gear wheel pumps configured as hydraulic pumps of a hydraulic, slip-controlled vehicle braking system. The double internal gear wheel pump further includes a partition wall that is arranged between both internal gear wheel pumps. The partition wall is configured as a single-piece component of a pump housing, preferably formed by a hydraulic block of the vehicle braking system.

SCREW COMPRESSOR UNIT

In a capacity-adjustable screw compressor unit, a thrust force caused by a reaction force of gas can be appropriately cancelled by a balance piston. A screw compressor unit of the present invention includes a compressor, having a pair of male and female screw rotors meshing with each other contained in a casing, for compressing sucked gas and discharging it, a balance piston for pressing a rotor shaft acting as a rotating shaft of at least one of the screw rotors in an axial direction by a fluid pressure, a slide valve for adjusting capacity of the compressor, and a balance piston control device for adjusting pressure of a fluid applied on the balance piston according to the capacity of the compressor calculated from a position of the slide valve. 1. A compressor unit , comprising:a casing;a pair of male and female screw rotors contained in the casing and meshing with each other;a compressor having the casing and the screw rotors and for compressing sucked gas and discharging it;a balance piston for pressing a rotor shaft acting as a rotating shaft of at least one of the screw rotors in an axial direction by a fluid pressure;a capacity adjuster for adjusting capacity of the compressor; anda balance piston control device for adjusting pressure of a fluid applied on the balance piston according to the capacity of the compressor.2. The compressor unit according to claim 1 , whereinthe capacity adjuster includes a slide valve, andthe balance piston control device adjusts the pressure of the fluid applied on the balance piston according to a position of the slide valve.3. The compressor unit according to claim 1 , further comprising:a suction pressure detector for detecting pressure of gas sucked by the compressor,wherein the balance piston control device adjusts the pressure of the fluid applied on the balance piston by taking account of a detected value of the suction pressure detector.4. The compressor unit according to claim 1 , further comprising:a discharge ...

METHOD FOR PRODUCING THE TOOTH SHAPE OF THE INNER AND OUTER RING OF AN ANNULAR GEAR MACHINE AND TOOTHED RING PRODUCED BY MEANS OF SAID METHOD

In producing tooth shapes of two toothed rings of an annular gear machine, a starting geometry of a first toothed ring, at least one quality criterion of the annular gear machine, and a desired eccentricity between rotational axes of the two toothed rings are defined. A motion is performed with the starting geometry that performs a rotational motion about its rotational axis and a revolving motion about the rotational axis of the second toothed ring. The rotational and revolving motions are coupled so the rotational angle of the eccentricity equals the product of the rotational angle and tooth count of the first toothed ring. A tooth shape contour of the second toothed ring is generated by recording the path described by the envelope of the starting geometry. If the defined quality criterion is not met, the previously used starting geometry and/or the defined eccentricity is changed and steps are repeated. 1. A method for forming the tooth shape of a first and a second annular gear of an annular gear machine , comprising the following steps:a) establishing a starting geometry of the first annular gear, the inner or outer ring of the annular gear machine, at least one quality criterion of the annular gear machine as well as a desired eccentricity (e) between the rotation axes (A, B) of the two annular gears;b) performing a movement with the starting geometry established, wherein the starting geometry performs a rotational movement about its own rotational axis (B) and at the same time a revolving movement about the rotational axis (A) of the second annular gear, and wherein this rotational movement and this revolving movement are interrelated such that the angle of rotation (b) of the eccentricity (e) is continuously equal to the product of the angle of rotation (a) of the first annular gear and the number of teeth (Z) of the first annular gear (b=a×Z);c) generating the tooth shape contour of the second annular gear by plotting the path described by the envelope ...

MULTI-CLUSTER GEAR DEVICE

A multi-cluster gear device operable to function as a pump, a motor or operable to alternate between a pump and a motor. 1. A multi cluster gear device comprising:a shaft rotatable about a longitudinal axis;a primary gear mounted on the shaft;at least two secondary gears spaced about and positioned to engage with the primary gear;each of the at least two secondary gears configured to independently receive fluid from a fluid reservoir and to allow flow of a portion of the fluid about the secondary gear and to allow the remaining portion of the fluid to be carried by the primary gear to the adjacent secondary gear.2. A multi cluster gear device comprising:a primary gear;at least two secondary gears spaced about and positioned to engage with the primary gear;each of the at least two secondary gears configured to independently receive fluid from a fluid reservoir and to allow flow of a portion of the fluid about the secondary gear and to allow the remaining portion of the fluid to be carried by the primary gear to the adjacent secondary gear.3. The multi cluster gear device according to claim 2 , wherein the at least two secondary gears are smaller than the primary gear.4. The multi cluster gear device according to claim 2 , wherein the at least two secondary gears are spaced evenly about the periphery of the primary gear.5. The multi cluster gear device according to claim 2 , wherein approximately 50% of the fluid received by each of the at least two secondary gears flows around respective secondary gears and the remaining fluid portion is carried to the adjacent secondary gear.6. The multi cluster gear device according to claim 2 , wherein the each of the secondary gears discharges approximately half of the total volume of fluid received claim 2 , such that each of the secondary gears is associated with an input port and an output port claim 2 , providing for a pair of ports per said each of the secondary gears.7. The multi cluster gear device according to claim 6 , ...

Polyetherimide pump

A positive displacement pump and methods of making a positive displacement pump having a component, the component having a density ranging from more than 0 to 3 g/cm 3 , a glass transition temperature (Tg) greater than or equal to 150° C., and a yield strength retention greater than 90% after soaking in engine oil for 7 days at 150° C.

ROTOR FOR PUMP

The present invention relates to a rotor for a vacuum pump having a roots pumping mechanism, the rotor comprising at least two hollow lobes, each lobe having an outer wall which defines a lobe profile, a hollow cavity generally inward of the outer wall, and at least one strengthening rib located in the cavity to resist stress on the lobes generated during rotation. 1. A vacuum pump rotor for use in a vacuum pump having a roots pumping mechanism , the rotor comprising at least two hollow lobes , each respective hollow lobe comprising:a respective outer wall which defines a lobe profile,a respective hollow cavity generally inward of the respective outer wall, andat least one respective strengthening rib located in the respective hollow cavity to resist stress on the respective hollow lobe generated during rotation.2. The rotor of claim 1 , wherein the at least one respective strengthening rib extends around an interior wall of the respective hollow lobe.3. The rotor of claim 1 , wherein the at least one respective strengthening rib has a varying extent and is distributed within the respective hollow cavity dependent on the varying stresses applied to the respective hollow lobe in use.4. The rotor of claim 1 , wherein the respective outer wall has a varying thickness and is thicker at a radially inner portion than at a lobe tip.5. The rotor of claim 1 , wherein the respective outer wall defines a thickness such that the respective hollow lobe deforms under centrifugal loading when the rotor is rotated in use and the deformation is greater than manufacturing tolerances.6. The rotor of claim 5 , wherein the respective hollow lobe defines a first configuration in a first condition in which the rotor is rotated in use and a second condition when the rotor is not rotated and the respective hollow lobe is not in the first configuration claim 5 , and wherein the respective hollow lobe deforms from the second condition to the first condition when tip speed of the respective ...

GEAR MACHINE HAVING A LOW-PRESSURE CONNECTION DEVIATING FROM THE CIRCULAR SHAPE

A gear machine includes two externally intermeshing gear wheels enclosed by a housing that has a high-pressure connection and a low-pressure connection situated opposite one another. On an inner circumferential face of the housing, a notional boundary line is assigned to both gear wheels. The line runs parallel to the line of contact between the gear tooth tips of the gear wheels and the inner circumferential face. The intersection edge is located between the two boundary lines and the minimum distance between the intersection edge and the boundary lines are at least one pitch interval of the gear wheels. The cross sectional shape of the low-pressure connection deviates from the circular shape such that its cross sectional area overlapping the gear wheels is greater than the cross sectional area of a notional, circular low-pressure connection overlapping the gear wheels at the same minimum distance from the boundary lines. 1. A gear machine , comprising:two externally intermeshing gear wheels enclosed by a housing, the housing including a high-pressure connection and a low-pressure connection situated opposite one another, the low-pressure connection having a constant cross sectional shape in the direction of a central axis, said connection forming an intersection edge with an inner circumferential face of the housing which bears tightly against gear tooth tips of the gear wheels, andan optionally multipart bearing liner arranged on both sides of each of the gear wheels and configured to rotatably support the gear wheels, the bearing liners bearing tightly on an associated lateral face of the gear wheels, the bearing liners having at least one pressure equalization chamfer assigned to each of the two gear wheels, said chamfer extending opposite the relevant gear wheel and the inner circumferential face from the high-pressure connection in the direction of the low-pressure connection where the chamfer has an end,wherein, on the inner circumferential face of the ...

Simplified roots-type blower

The present disclosure relates to a simplified roots-type blower having an improved sound signature. The roots-type blower includes a rotor bore housing having a molded, one-piece polymeric construction. The rotor bore housing defines a first rotor bore and a second rotor bore. The rotor bore housing also defines a first bearing pocket corresponding to the first rotor bore and a bearing pocket corresponding to the second rotor bore axis. The rotor bore housing further defining a timing gear chamber.

INTERNAL GEAR PUMP

An internal gear pump includes a pinion, a ring arranged around the pinion, and a cylindrical wall arranged around the ring. A support element, on which the pinion and the ring are supported, carries high-pressure liquid towards a recess located at the junction between the ring and the cylindrical wall, and also carries low-pressure liquid towards another recess located at another point of the junction between the ring and the cylindrical wall. The recess allows the load of the ring on the cylindrical wall to be reduced. 1. An internal gear pump comprising:a pinion capable of rotating about a first axis of rotation;a ring arranged around the pinion, having a cylindrical periphery and being configured to rotate about a second axis of rotation that is different to the first axis of rotation and parallel thereto, the pinion and the ring being arranged to delimit a work space comprising a high-pressure space and a low-pressure space;a first support element arranged on a first side of the ring to limit the movement thereof in a first sense along a first orientation that is substantially parallel to the first and second axes of rotation;a second support element arranged on a second side of the ring to limit the movement thereof in a second sense that is opposite the first sense and in the first orientation;a cylindrical wall arranged around the ring to limit the movement thereof in a plane that is substantially perpendicular to the second axis of rotation;a first high-pressure recess in an arc of a circle and in fluid contact with a first portion of the cylindrical periphery of the ring;a first low-pressure recess in an arc of a circle and in fluid contact with a second portion of the cylindrical periphery of the ring, the first high-pressure recess and the first low-pressure recess being separated;a first high-pressure conveying means forming a fluid connection between the high-pressure space and the first high-pressure recess; anda first low-pressure conveying means ...

HYDRAULIC MOTOR SUBASSEMBLY KIT WITH CARRIER

A carrier for a motor subassembly of a hydraulic motor is provided that enables multiple components of the motor subassembly to be temporarily bundled into a compact and easy-to-transport motor subassembly kit. The carrier is a non-hydraulically-functioning member that is configured to have one or more features that mimic a corresponding one or more features of a hydraulically-functioning motor housing to which motor subassembly is intended to be coupled for forming the hydraulic motor. The carrier may have a body with a recessed portion that is configured to receive and/or enclose one or more components of the motor subassembly, and which may cooperate with the one or more motor subassembly components to temporarily secure and bundle the motor subassembly as a compact kit, thereby facilitating transportation and handling of the subassembly components. 1. A motor subassembly kit for a hydraulic motor , the kit comprising:a hydraulically-operable motor subassembly having a plurality of motor components that are configured to be operably coupled to a hydraulically-operable motor housing for at least partially forming the hydraulic motor; anda non-hydraulically-operable carrier for carrying the motor subassembly;wherein the carrier cooperates with the motor subassembly to temporarily secure the plurality of motor components of the motor subassembly as a transportable bundle, andwherein the carrier has one or more portions that mimic a corresponding one or more portions of the hydraulically-operable motor housing, thereby facilitating transportation of the plurality of motor components in the transportable bundle.2. The motor subassembly kit according to claim 1 , wherein the carrier includes a body having a nose portion claim 1 , a base portion claim 1 , and an intermediate portion extending between the nose portion and the base portion;wherein the carrier has an opening in the base portion for receiving one or more of the plurality of motor components, andwherein the ...

SELF ADJUSTING PUMP FOR ICE CREAM FREEZER

A self adjusting gear pump () for an ice cream freezer and a control unit () for adaptively controlling the closing pressure (PCLOSE) of a pump for an ice cream freezer. The gear pump system comprises a pump casing (), an inlet () for receiving a liquid food product of ice cream mix, an outlet () for transferring the ice cream mix into a freezing cylinder () of the ice cream freezer (), wherein the pump () is closed by supplying a closing air pressure onto a moveable pump cover () of the pump via at least one hole () provided straight through the pump casing (), thereby moving said moveable pump cover () against the star wheel () and a control unit () for supplying a calculated closing air pressure (PCLOSE) to the pump by means of the air pressure regulator (). 1. A control unit for adaptively controlling closing pressure of an inlet gear pump of an ice cream freezer , the inlet gear pump comprising a pump casing , an inlet for receiving a liquid food product of ice cream mix , and outlet for transferring the ice cream mix into a freezing cylinder of the ice cream freezer , the inlet being connected to an impeller driving a star wheel which in turn is connected to the outlet , wherein the pump is closed by supplying a closing air pressure onto a movable pump cover of the pump via at least one hole provided straight through the pump casing , thereby moving said movable pump cover against the star wheel , wherein the control unit is configured to:receive a first measure of liquid food product supply pressure at the inlet of the pump,receive a second measure of liquid food product outlet pressure at the outlet of the pump,calculate a closing air pressure being determined by the differential pressure between the liquid food product outlet pressure and the liquid food product supply pressure across the pump,supply the calculated closing air pressure to the moveable pump cover by means of an air pressure regulator via the at least one hole in the pump casing, thereby ...

CONTROLLER FOR VARYING FLOW RATE FROM FIXED DISPLACEMENT PUMP

A controller for varying flow rate of a fluid from a fixed displacement pump is provided. The controller includes a pump speed control gear set, a ratio control pump, and a relief valve. The pump speed control gear set includes a sun gear configured to be driven by a prime mover, a planet carrier including one or more planet gears meshed with the sun gear, and a ring gear meshed with the planet gears. The ring gear is configured to connect to an input shaft of the fixed displacement pump. The ratio control pump includes a stationary body, and a rotor coupled to the planet carrier of the pump speed control gear set. The rotor is configured to co-act with the body to pump fluid. The relief valve is connected to the ratio control pump and configured to restrict fluid egress from the ratio control pump. 1. A controller for varying flow rate of a fixed displacement pump , the controller comprising: a sun gear configured to be driven by a prime mover;', 'a planet carrier including one or more planet gears meshed with the sun gear; and', 'a ring gear meshed with the planet gears and configured to connect to an input shaft of the fixed displacement pump; and, 'a pump speed control gear set including at least a stationary body; and', 'a rotor coupled to the planet carrier of the displacement control gear set and configured to co-act with the body to pump fluid; and, 'a ratio control pump includinga relief valve connected to the ratio control pump and configured to restrict fluid egress from the ratio control pump.2. The controller of claim 1 , wherein the rotor is configured to slip with respect to the body while the relief valve selectively restricts fluid egress from the ratio control pump.3. The controller of claim 1 , wherein the relief valve of the ratio control pump is configured to restrict fluid egress such that flow rate of the fixed displacement pump is varied.4. The controller of claim 1 , wherein the pump speed control gear set is one of a simple planetary gear ...

ROTARY LOBE PUMP WITH INTERNAL BEARING

A rotary lobe pump having a pump housing with a pump room, an inlet opening and an outlet opening, a first multi-lobe rotary piston, which is arranged in the pump room and is rotatably mounted about a first axis of rotation, a second multi-lobe rotary piston, which is arranged in the pump room and is rotatably mounted about a second axis of rotation spaced apart from the first axis of rotation and meshingly engages in the first rotary piston, wherein the first and second rotary pistons are drivable in opposite directions and are designed to generate a flow of a conveyed medium from the inlet opening through the pump room to the outlet opening by counter-rotation about the first and second axis of rotation, respectively, and a drive device, which is mechanically coupled to the rotary pistons for driving the rotary pistons. 124-. (canceled)25. A rotary lobe pump for conveying a particle-laden conveyed medium , comprising:a pump housing with a pump room;an inlet opening and an outlet opening;a first, multi-lobe rotary piston, which is arranged in the pump room and is rotatably mounted about a first axis of rotation;a second multi-lobe rotary piston, which is arranged in the pump room, and is rotatably mounted about a second axis of rotation spaced apart from the first axis of rotation and meshingly engages in the first rotary piston;wherein the first and the second rotary pistons are drivable in opposite directions and are designed to generate a flow of the conveyed medium from the inlet opening through the pump room to the outlet opening by counter-rotation about the first and second axis of rotation, respectively;a drive device arranged on one side of the pump housing, which is mechanically coupled to the rotary pistons for driving the rotary pistons;a first fixed axle body, which is arranged inside the first rotary piston and connected to the pump housing on the side of the drive device; andat least one first bearing for rotatably supporting the first rotary piston ...

System to Pump Fluid and Control Thereof

A fluid system includes a variable-speed and/or a variable-torque pump to pump a fluid, at least one proportional control valve assembly, an actuator that is operated by the fluid to control a load, and a controller that establishes a speed and/or torque of the pump and a position of the at least one proportional control valve assembly. The pump includes at least one fluid driver that provides fluid to the actuator, which can be, e.g., a fluid-actuated cylinder, a fluid-driven motor or another type of fluid-driven actuator that controls a load. Each fluid driver includes a prime mover and a fluid displacement assembly. The fluid displacement assembly can be driven by the prime mover such that fluid is transferred from the inlet port to the outlet port of the pump. 130.-. (canceled)31. A hydraulic system comprising: at least one electric motor,', 'a gear assembly configured to be driven by the at least one electric motor such that fluid is transferred from an inlet port of the hydraulic pump to an outlet port of the hydraulic pump; and', 'a control valve disposed on a side of the inlet port or the outlet port, wherein the first control valve is configured to be throttled; and, 'a hydraulic pump to provide hydraulic fluid to a hydraulic actuator having first and second ports, the hydraulic pump including,'}a controller configured to operate the at least one electric motor to control a flow in the hydraulic system to a flow set point or a pressure in the hydraulic system to a pressure set point, the controller further configured to operate the control valve to control the flow in the hydraulic system to the flow set point or the pressure in the hydraulic system to the pressure set point.32. The hydraulic system of claim 31 , wherein the hydraulic system is a closed-loop system.33. The hydraulic system of claim 31 , wherein the control valve is throttleable between 0% and 100%.34. The hydraulic system of claim 31 , wherein the control valve is a ball valve.35. The ...

METHOD FOR COMPENSATING LEAKAGE LOSSES AND CONVEYOR SYSTEM FOR CONVEYING A DEFINED VOLUME OF A LIQUID

A method and a device for compensating leakage losses in a line system, in which at least one positive displacement pump and at least one shut-off member are provided, wherein the method and device can be used for the isobaric metering of liquid plastic components and wherein the actual liquid pressure in the system is determined by way of a pressure measuring device and, when the shut-off member is closed is regulated to a pressure target value by actuation of the positive displacement pump, wherein the conveying loss rate of the positive displacement pump, which ensues to maintain the pressure target value when the shut-off member is closed is added to a target delivery rate in order to compensate for the leakage loss occurring at the corresponding pressure target value. 17-. (canceled)8. A method for compensating leakage losses in a line system for liquids having at least one positive displacement pump and at least one shut-off member , in particular in the at least largely isobaric metering of liquid plastic components , wherein an actual liquid pressure in the line system is ascertained by a pressure measuring device and is regulated to a pressure target value by actuation of the at least one positive displacement pump with the at least one shut-off member closed.9. The method according to claim 8 , wherein a conveying loss rate of the positive displacement pump which ensues to maintain the pressure target value when the at least one shut-off member is closed is added to a target delivery rate in order to compensate for the leakage loss occurring at the corresponding pressure target value.10. The method according to claim 8 , wherein the at least one positive displacement pump includes a rotary displacement machine.11. The method according to claim 10 , wherein the rotary displacement machine includes a geared pump.12. The method according to claim 8 , wherein the line system has a substantially constant volume at least between the at least one positive ...

Gear pump and image recording apparatus

To reduce frictional heat generated between a rotation shaft and a bearing portion in a gear pump in which the rotation shaft having a gear mounted thereon is received by the bearing portion and an image recording apparatus having the gear pump. Provided is a gear pump which has a rotation shaft, a bearing portion which receives the rotation shaft, and a gear which is mounted on the rotation shaft and rotates with the rotation shaft, in such a manner that the gear feeds liquid. Furthermore, at least either a concave portion or a convex portion is provided in at least either the rotation shaft or the bearing portion.

DUAL-STAGE GEAR PUMP WITH REDUCED PRESSURE RIPPLE

A fuel system includes a fuel gathering system in fluid communication with a fuel storage container, and a fluid pump assembly in fluid communication with the fuel gathering system. The fluid pump assembly includes a main gear pump stage and a first flow attenuator. A main driven gear is meshed with a main drive gear in a main pump conduit, and a main pump bearing assembly rotatably supports the main drive gear and the main driven gear. The first flow attenuator is disposed around the main pump conduit, and includes a substantially polygonal fluid opening. Edges of the opening are substantially aligned with an undercut bearing portion on at least one of an inlet side and an outlet side of the main pump conduit to define a non-round fluid boundary. 1. A fuel system comprising:a fuel storage container;a fuel gathering system in fluid communication with the fuel storage container; and a main gear pump stage including a main driven gear meshed with a main drive gear in a main pump conduit, and a main pump bearing assembly rotatably supporting the main drive gear and the main driven gear; and', 'a first flow attenuator disposed around the main pump conduit, the first flow attenuator including a substantially polygonal fluid opening having edges substantially aligned with an undercut bearing portion on at least one of an inlet side and an outlet side of the main pump conduit to define a non-round fluid boundary., 'a fluid pump assembly in fluid communication with the fuel gathering system, the fluid pump assembly comprising2. The fuel system of claim 1 , wherein the fuel storage container comprises:a plurality of wing-mounted fuel tanks.3. The fuel system of claim 1 , further comprising:a heat exchanger disposed upstream of the dual-stage fuel pump assembly;wherein the heat exchanger is in selective thermal communication with engine oil flowing through an engine thermal management system.4. The fuel system of claim 1 , wherein the fluid pump assembly is a dual-stage fuel ...

OIL DELIVERY SYSTEM FOR THE LUBRICATION OF A CHAINSAW

The disclosure provides a method of oil delivery to a chainsaw chain blade using a gerotor pump in sequence with flow control valves to provide lubrication to the chain blade to reduce friction with the chainsaw bar guide and prevent overheating and damage to the chain blade or guide bar. 1. A fluid lubrication system , which comprises:a fluid reservoir;a gerotor pump; anda system of fluid feed lines, wherein the fluid feed lines establish fluid communication between the fluid reservoir, the gerotor pump and a point of application, and wherein the gerotor pump is configured to pump a fluid from the fluid reservoir, through the system of fluid feed lines and to the point of application.2. The fluid lubrication system described in including one or more valves intervening between one or more of the gerotor pump claim 1 , the fluid reservoir and the point of application claim 1 , including but not limited to one or more of a gate valve claim 1 , a pressure relief valve and a venturi valve.3. The fluid lubrication system of claim 1 , wherein the gerotor pump comprises:a pump housing, having a fluid inlet port and a fluid outlet port;a gerotor pump motor, having a motor rod that extends from the motor into the pump housing;an inner gerotor gear, having n number of gear teeth, wherein the inner gerotor gear is secured to the motor rod, such that it will spin with the motor rod;{'b': '1', 'an outer gerotor gear, having n+ number of gear notches, wherein the inner gerotor gear is positioned within the outer gerotor gear, such that it will transfer the spinning motion of the motor rod to the outer gerotor gear;'}one or more fluid pocket recesses formed by the pump housing and configured to one or more of increase the size of fluid enclosures created by the spinning gerotor gears and deliver lubrication between the gerotor gears and the pump housing;a fluid-tight seal positioned around the inner and outer gerotor gears inside the pump housing.4. The fluid lubrication system of ...

BI-HELICAL TOOTHED WHEEL WITH VARIABLE HELIX ANGLE AND NON-ENCAPSULATING TOOTH PROFILE FOR HYDRAULIC GEAR APPARATUSES

The invention relates to a bi-helical toothed wheel () with non-encapsulating profile () for hydraulic gear apparatuses (), of the type bound to a support shaft () to form a driving or driven wheel of said hydraulic apparatus and comprising a plurality of teeth () extended with variable helix angle with continuous function in the longitudinal direction, wherein the teeth profile () keeps a shape continuity in each cross section thereof. More particularly, each tooth of the toothed wheel is longitudinally split in three zones: initial (A), central (B) and terminal (C) zones, and the central zone (B) has a variable helix angle, while the initial (A) and terminal (c) zones have a constant helix angle. The invention allows to manufacture contra-rotating rotors, having a non-encapsulating profile and a helix shape such as to suppress the angular point at the center of the rotors themselves and therefore all the problems related to their machining. 1. A bi-helical toothed wheel with non-encapsulating profile for hydraulic gear apparatuses , said bi-helical toothed wheel being bound to a support shaft to form a driving or driven wheel of said hydraulic apparatus and comprising a plurality of teeth extended with variable helix angle with continuous function in the longitudinal or axial tooth direction , wherein the teeth profile keeps a shape continuity in each cross section thereof.2. A toothed wheel according to claim 1 , wherein each tooth is longitudinally split in three zones: initial claim 1 , central and terminal zones claim 1 , where the initial and terminal zones have a symmetrical helix angle.3. A toothed wheel according to claim 1 , wherein the helix angle of the tooth is variable over the whole gear length.4. A toothed wheel according to claim 1 , wherein each cross section coincides with the front profile of the toothed wheel.5. A toothed wheel according to claim 1 , wherein the helix development has a transition point between a right-handed portion and a left- ...

PUMP WITH BLEED MECHANISM FOR REDUCING CAVITATION

A gear pump assembly includes a drive gear having a plurality of circumferentially spaced teeth, and a driven gear likewise having a plurality of circumferentially spaced teeth positioned for intermeshing engagement between the drive and driven gears via the teeth. A bleed mechanism directs carryover fluid from a discharge side of a bearing dam to an inlet side of the bearing dam in order to supply the carryover fluid to a carryover volume disposed between mating drive gear teeth and driven gear teeth. The bleed mechanism including a passage communicating with at least one of (i) a gear face of the drive gear, (ii) a gear face of the driven gear; or (iii) a bottom of a gear tooth profile adjacent a root region between adjacent gear teeth. 1. A gear pump assembly comprising:a drive gear having a plurality of circumferentially spaced teeth;a driven gear having a plurality of circumferentially spaced teeth that mesh with the teeth of the drive gear whereby rotation of the drive gear results in rotation of the driven gear; anda bleed mechanism that directs carryover fluid from a first side of a bearing dam to a second side of the bearing dam in order to supply the carryover fluid to a carryover volume disposed between mating drive gear teeth and driven gear teeth, the bleed mechanism including a passage communicating with at least one of:(i) a gear face of the drive gear,(ii) a gear face of the driven gear; or(iii) a bottom of a gear tooth profile adjacent a root region between adjacent gear teeth.2. The gear pump assembly of wherein the passage includes at least one of a first passage portion extending through a tooth of the drive gear and/or driven gear.3. The gear pump assembly of wherein the first passage portion extends in a direction substantially parallel to opposite faces of the tooth of the drive and/or driven gear.4. The gear pump assembly of wherein the passage includes a second passage portion communicating at a first end with the first passage portion ...

SPROCKET GEROTOR PUMP

A sprocket gerotor pump includes an outer gerotor gear configured to rotate about a first axis. The outer gerotor gear includes an outer gear body including a plurality of internal gear teeth extending from the outer gear body toward the first axis. The sprocket gerotor pump includes an inner gerotor gear configured to rotate about a second axis. The inner gerotor gear includes an inner gear body and a plurality of external gear teeth extending from the inner gerotor gear away from the second axis. The external gear teeth mesh with the internal gear teeth. Rotating the outer gerotor gear causes rotation of the inner gerotor gear. The sprocket gerotor pump further includes a sprocket integrally coupled with the outer gerotor gear such that the sprocket and the outer gerotor gear collectively form a one-piece structure. The sprocket is driven by a chain. 1. A sprocket gerotor pump , comprising:an outer gerotor gear configured to rotate about a first axis, wherein the outer gerotor gear includes an outer gear body including a plurality of internal gear teeth extending from the outer gear body toward the first axis;an inner gerotor gear configured to rotate about a second axis, wherein the second axis is spaced apart from the first axis, the inner gerotor gear includes an inner gear body and a plurality of external gear teeth extending from the inner gear body away from the second axis, and the plurality of external gear teeth meshes with the plurality of the internal gear teeth such that rotation of the outer gerotor gear causes rotation of the inner gerotor gear; anda sprocket integrally coupled with the outer gerotor gear such that the sprocket and the outer gerotor gear collectively form a one-piece structure.2. The sprocket gerotor pump of claim 1 , wherein the sprocket includes a ring and a plurality of external sprocket teeth extending from the ring.3. The sprocket gerotor pump of claim 2 , wherein the ring is directly coupled to the outer gear body claim 2 , the ...

HIGH EFFICIENCY GEAR PUMP BEARING ASSEMBLY

A bearing assembly for a gear pump that includes a bearing housing, a bearing, and a biasing member. The bearing housing has a housing bore that extends between a first housing end and a second housing end along a bearing axis. The bearing is disposed within the housing bore. The bearing has an outer diameter extending between a first bearing end and a second bearing end. The biasing member is disposed between the bearing and the bearing housing to apply a biasing load to the bearing. 1. A bearing assembly for a gear pump , comprising:a bearing housing having a housing bore that extends between a first housing end and a second housing end along a bearing axis;a bearing disposed within the housing bore, the bearing having an outer diameter extending between a first bearing end and a second bearing end; anda biasing member disposed between the bearing and the bearing housing to apply a biasing load to the bearing.2. The bearing assembly of claim 1 , wherein the biasing member includes a first arm that engages the outer diameter of the bearing and a second arm that engages the housing bore.3. The bearing assembly of claim 1 , wherein the bearing housing defines an opening that radially extends from an outer surface of the bearing housing towards the housing bore.4. The bearing assembly of claim 1 , wherein the bearing includes a first bearing arm that radially extends from the outer diameter towards the housing bore.5. The bearing assembly of claim 4 , wherein the biasing member is axially disposed between the first bearing arm and the second bearing end.6. The bearing assembly of claim 4 , wherein the first bearing arm defines a pocket that receives the biasing member.7. The bearing assembly of claim 4 , wherein the bearing includes a second bearing arm that is axially spaced apart from the first bearing arm and radially extends from the outer diameter towards the housing bore.8. The bearing assembly of claim 7 , wherein the second bearing arm defines a pocket that ...

GEAR PUMP

The present invention relates to a gear pump having a housing that has an inflow for the liquid to be conveyed, that has an outflow for the conveyed liquid, and that has a pump chamber in which the gear or gears for conveying the liquid are present, with at least one bearing position being present in the housing, in which bearing position at least one gear is rotatably received, wherein the inflow is in a different plane than the outflow; and wherein at least one first flushing passage that extends up to the bearing position(s) is in direct or indirect fluid communication with the inflow and/or with the outflow. 1. A gear pump having a housing that has an inflow for the liquid to be conveyed , that has an outflow for the conveyed liquid , and that has a pump chamber in which the gear or gears for conveying the liquid are present , with at least one bearing position being present in the housing , in which bearing position at least one gear is rotatably received , characterized in that the inflow is in a different plane than the outflow; and in that at least one first flushing passage that extends up to the bearing position(s) is in direct or indirect fluid communication with the inflow and/or with the outflow.2. A gear pump having a housing that has an inflow for the liquid to be conveyed , that has an outflow for the conveyed liquid , and that has a pump chamber in which the gear or gears for conveying the liquid are present , with at least one bearing position being present in the housing , in which bearing position at least one of the gears is rotatably received , and with a magnet for driving the gear or gears being located in the housing , characterized in that a second flushing passage that extends up to the magnet is located on the pressure side of the gears.3. A gear pump in accordance with claim 1 , characterized in that the gear pump includes a second flushing passage that extends up to the magnet and is located on the pressure side of the gears.4. A gear ...

OIL PUMP

An oil pump which changes an amount of fluid transferred from an intake port to a discharge port in one rotation, by causing a rotation of a reference line linking centers of rotation of an inner rotor and an outer rotor, the oil pump including a pump housing in which a first partitioning section is formed between a trailing end section of the intake port and a leading end section of the discharge port, and a second partitioning section is formed between a trailing end section of the discharge port and a leading end section of the intake port. A width dimension of the second partitioning section is formed to be the same as or larger than a formation range of a space between teeth which is constituted by the inner rotor and the outer rotor passing the second partitioning section during a low-speed rotation. 1. An oil pump which changes an amount of fluid transferred from an intake port to a discharge port in one rotation , by causing a rotation of a reference line linking centers of rotation of an inner rotor and an outer rotor , the oil pump comprising:a pump housing in which a first partitioning section is formed between a trailing end section of the intake port and a leading end section of the discharge port, and a second partitioning section is formed between a trailing end section of the discharge port and a leading end section of the intake port,wherein the reference line passes through respective central positions of the first partitioning section and the second partitioning section in a width direction during a low-speed rotation,wherein the reference line rotates in a direction opposite to a direction of rotation of the inner rotor and the outer rotor, and passes through rear sides, in terms of the direction of rotation, of the respective central positions of the first partitioning section and the second partitioning section in the width direction during a high-speed rotation,wherein a width dimension of the second partitioning section is formed to be the ...

GEAR PUMP BEARINGS WITH HYBRID PADS

A journal bearing assembly includes a first journal bearing disposed about a longitudinal end of a gear shaft and spaced a first distance from a first axial gear face. A first fluid film location and a first hybrid pad location are annularly between an inner surface of the first journal bearing and an outer surface of the gear shaft. The first hybrid pad location circumferentially adjacent to the first fluid film location has a minimum leading edge angular location of at least about 31.0° measured relative to a first bearing flat. A first porting path provides high pressure fluid communication from a location outside the first journal bearing to the first fluid film location at or adjacent to the first hybrid pad location. 1. A journal bearing assembly comprising:a gear shaft;a gear mounted to the gear shaft, the gear including a first axial gear face;a first journal bearing disposed about a longitudinal end of the gear shaft and spaced a first distance from the first axial gear face;a first fluid film location annularly between an inner surface of the first journal bearing and an outer surface of the gear shaft;a first hybrid pad location circumferentially adjacent to the first fluid film location, the first hybrid pad location having a minimum leading edge angular location of at least about 31.0° measured relative to a first bearing flat; anda first porting path through a body of the first journal bearing providing high pressure fluid communication from a location outside the first journal bearing to the first fluid film location at or adjacent to the first hybrid pad location.2. The journal bearing assembly of claim 1 , wherein the first porting path comprises:a discharge face cut into an outer surface of the first journal bearing for receiving the high pressure fluid;a radial spool cut into the first journal bearing;an axial hole through the first journal bearing for communicating the high pressure fluid from the discharge face cut to the radial spool cut; anda ...

Apparatus for Reducing Noise of Gear Pump Through Uneven Pitch-Simulated Control and Method Thereof

An apparatus for reducing noise of a gear pump through uneven pitch-simulated control includes a calculation unit to calculate different control current values for each tooth of a teeth order by applying a teeth number, the teeth order, and a teeth angle of the gear pump in which a plurality of teeth are evenly formed, a storage unit to map and store the teeth order and the different control current values corresponding to the teeth order for each tooth, and a current controller to variably generate the control current value mapped corresponding to the teeth order when each tooth reaches a reference position when the gear pump rotates by a motor, wherein the control current value is added to a reference current value of a motor control signal and applied to the motor. 1. An apparatus for reducing noise of a gear pump through uneven pitch-simulated control , the apparatus comprising:a calculation unit configured to calculate different control current values for each tooth of a teeth order by applying a teeth number, the teeth order, and a teeth angle of the gear pump in which a plurality of teeth are evenly formed to a predetermined function;a storage unit configured to map and store the teeth order and the different control current values corresponding to the teeth order for each tooth; anda current controller configured to variably generate the control current value mapped corresponding to the teeth order when each tooth reaches a reference position when the gear pump rotates by a motor, wherein the control current value is added to a reference current value of a motor control signal and applied to the motor.2. The apparatus of claim 1 , wherein the current controller is configured to:instantaneously generate the control current value mapped with the tooth corresponding to the teeth order at a time when the tooth corresponding to the teeth order reaches the reference position; andapply only the reference current value to the motor during a remaining time when the ...

DEMAND FUEL SYSTEMS FOR TURBOMACHINES

A fuel system for a turbomachine includes a fuel tank and a first fuel line in fluid communication with the fuel tank and one or more fuel injectors. The first fuel line includes a main fuel pump disposed on the first fuel line, and an electric metering system disposed on the first fuel line downstream of the main fuel pump configured for starting the turbomachine and metering fuel to the fuel injectors. 1. A method for pumping fuel to a turbomachine , comprising:using an electric metering system to meter fuel to one or more fuel injectors of the turbomachine.2. The method of claim 1 , wherein the electric metering system is an electric pump configured to start the turbomachine and to meter fuel to the fuel injectors.3. The method of claim 1 , further comprising pumping fuel to the electric metering system using a mechanical vapor core fuel pump.4. The method of claim 1 , wherein the electric metering system includes a separate electric starter pump and a controllable metering valve.5. The method of claim 3 , further comprising flowing fuel to a fuel/oil cooler disposed downstream of the mechanical vapor core pump and the electric metering system.6. The method of claim 5 , wherein the fuel-oil cooler is between the electric metering system and the one or more fuel injectors.7. A method for not returning fuel to a fuel tank in a turbomachine to reduce heat addition to on-board fuel claim 5 , comprising:metering fuel to one or more fuel injectors of a turbomachine using an electric metering system to continuously pump only required fuel to the fuel injectors and thereby eliminating a need to return fuel to the fuel tank.8. The method of claim 7 , wherein the electric metering system is an electric pump configured to start the turbomachine and to meter fuel to the fuel injectors.9. The method of claim 7 , further comprising pumping fuel to the electric metering system using a mechanical vapor core fuel pump.10. The method of claim 7 , wherein the electric metering ...

INTERNAL GEAR PUMP

An internal gear pump includes an outer rotor, an inner rotor, and a pump housing. The inner rotor is rotatably disposed inside the outer rotor having internal teeth, forms pump chambers between the outer rotor and the inner rotor, and has external teeth. The pump housing has an inhalation port, a discharge port, and a first notch formed within a first land surface that extends from an end of the inhalation port to an end of the discharge port. The first notch is formed along a projection trajectory obtained by projecting a trajectory of chip points on the first land surface, where each chip point is a middle point between a corresponding one of the internal teeth and a corresponding one of the external teeth at a location at which the internal and external teeth substantially face each other above the first land surface and are closest to each other. 1. An internal gear pump comprising:an outer rotor that comprises internal teeth;an inner rotor that is rotatably disposed inside the outer rotor, that forms pump chambers configured to expand and contract repeatedly between the outer rotor and the inner rotor, and that comprises external teeth a number of which is one less than a number of the internal teeth, the external teeth being engageable with the internal teeth; anda pump housing that is formed of a case comprising a retention hollow in which the outer rotor is rotatably retained and a cover that blocks an opening of the retention hollow and that has an inhalation port via which a fluid is to be inhaled into the pump chambers and a discharge port via which the fluid is to be discharged from the pump chambers,wherein the pump housing has a first notch formed within a first land surface that extends from an end of the inhalation port to an end of the discharge port, and the internal teeth and the external teeth are in sliding contact with the first land surface, andwherein the first notch is formed along a projection trajectory obtained by projecting a trajectory ...

OIL PUMP

An oil pump includes: a pump housing having a rotor accommodation space in an inner portion of the pump housing; a rotor accommodated in the rotor accommodation space; a shaft portion disposed inside the rotor; and a passage which is provided to straddle at least one of the pump housing and the rotor and the shaft portion and which communicates a pump chamber which is formed by the rotor inside the pump housing with an outside of the pump housing. 1. An oil pump comprising:a pump housing having a rotor accommodation space in an inner portion of the pump housing;a rotor accommodated in the rotor accommodation space;a shaft portion disposed inside the rotor; anda passage which is provided to straddle at least one of the pump housing and the rotor and the shaft portion and which communicates a pump chamber which is formed by the rotor inside the pump housing with an outside of the pump housing.2. The oil pump according to claim 1 ,wherein the passage includes a first passage portion which is provided to straddle at least one of the pump housing and the rotor and the shaft portion and extends in a direction intersecting an axial direction of the shaft portion, and a second passage portion which is provided in the shaft portion and extends in the axial direction.3. The oil pump according to claim 1 ,wherein the shaft portion includes an opening/closing mechanism which opens and closes the passage.4. The oil pump according to claim 2 ,wherein the shaft portion includes a rotary shaft which rotationally drives the rotor,the rotary shaft includes an opening/closing mechanism which opens and closes the passage,the opening/closing mechanism includes an opening/closing valve which includes a sealing wall and a communication bore which is disposed at a position deviated in the axial direction of the rotary shaft with respect to the sealing wall and is capable of moving in the axial direction of the rotary shaft, andthe opening/closing mechanism is configured to close the ...

Positive Displacement Pump With Shaft-Mounted Sleeve

A rotary positive displacement pump comprising a pair of forwardly-positioned sealing arrangements and a pair of forwardly-positioned sleeves are received within a cavity providing for easy maintenance of the pump when the seals need to serviced. Each of the sealing arrangement includes a dynamic seal and a static seal. The dynamic seal is positioned forward of the static seal and abuts a corresponding sleeve and hub. 1. A rotary positive displacement pump for pumping a pumped product , the rotary positive displacement pump comprising:a gear case including a pair of shafts extending therefrom at a forward end;a pump body supported by the gear case on the forward end of the gear case, the pump body having a cover attached thereto so as to define a cavity between the pump body and the cover in which the cavity has an inlet and an outlet, the pump body having a pair of hubs that extend into the cavity in which each of the pair of hubs has an axially-extending opening through each one of which a corresponding one of the pair of shafts from the gear case is received;a pair of rotors, each of the pair of rotors having a central portion received on one of the pair of shafts inside the axially-extending opening of the hub, each rotor having wings attached to the central portion of the rotor in which the wings of the rotor are disposed radially outward of the hub when the central portion of the rotor is attached to the shaft, the rotors on the pair of shafts being rotatable in opposite directions to pump a pumped product through the pump body from the inlet through the cavity to the outlet;a pair of sleeves, each of the pair of sleeves having a wall extending circumferentially along and about a longitudinal axis to define a central opening therein, the central opening of each of the pair of sleeves receiving a corresponding one of the pair of shafts, and each of the pair of sleeves configured to rotate in concert with the corresponding one of the pair of shafts; anda pair of ...

OIL PUMP

An oil pump has a pump body, an outer rotor, and an inner rotor. The pump body includes a rotor chamber, an inlet port and an outlet port formed in the rotor chamber, an inlet passage communicating with the inlet port, an outlet passage communicating with the outlet port, a relief valve, a relief chamber formed on a discharge side of the relief valve, and an oil return passage formed from the relief chamber to the inlet passage. The outer rotor is supported by the inner circumferential support wall of the rotor chamber. The oil return passage is formed in the inner circumferential support wall as a groove-like recess and opens along an outer circumferential surface of the outer rotor. 1. An oil pump , comprising:a pump body;an outer rotor; andan inner rotor,the pump body including a rotor chamber having an inner circumferential support wall on an inner circumferential side, an inlet port and an outlet port formed in the rotor chamber, an inlet passage communicating with said inlet port, an outlet passage communicating with said outlet port, a relief valve allowing oil to flow from the outlet passage to said inlet passage by relieving pressure, a relief chamber formed on a discharge side of the relief valve, and an oil return passage formed from said relief chamber to said inlet passage;the outer rotor being supported by the inner circumferential support wall of said rotor chamber; andthe inner rotor being arranged on an inner circumferential side of the outer rotor, wherein said oil return passage is formed in said inner circumferential support wall as a groove-like recess and opens along an outer circumferential surface of said outer rotor.2. The oil pump according to claim 1 , wherein said oil return passage is formed at and around a symmetric point of a maximum partition part located between a trailing end of said inlet port and a leading end of said outlet port relative to a center point of said rotor chamber.3. The oil pump according to claim 1 , wherein said ...

Rotary Expansible Chamber Devices Having Adjustable Working-Fluid Ports, and Systems Incorporating The Same

Rotary expansible chamber (REC) devices having one or more working-fluid ports that are adjustable, for example, in size or location. In some embodiments, the variable port mechanisms can be used to control any one or more of a plurality of operating parameters of a REC device independently of one or more others of the operating parameters. In some embodiments, the REC devices can have a plurality of fluid volumes that change in size during rotation of the REC device, and that transition to a zero volume condition during the rotation of the REC device. Systems are also provided that can include one or more REC devices. Methods for controlling various aspects of REC devices, including methods of controlling one or more operating parameters, are also provided. 1. A rotary expansible chamber device , comprising:an outer rotary component having a machine axis;an inner rotary component located relative to said outer rotary component so as to define a fluid zone between said inner and outer components, said fluid zone for receiving a working fluid during use, wherein said inner and outer rotary components are designed and configured to engage one another so that, when at least one of said inner and outer rotary components is continuously moved relative to the other about an axis parallel to said machine axis, said inner and outer rotary components continuously define at least one shrinking arc, at least one expanding arc, and at least one zero volume arc within said fluid zone;a first working-fluid port in fluid communication with said fluid zone and having a first circumferential extent and a first angular position about said machine axis; anda first mechanism designed and configured to controllably change at least one of said first circumferential extent and said first angular position.2. The rotary expansible chamber device of claim 1 , further comprising:a second working-fluid port in fluid communication with said fluid zone and having a second circumferential extent ...

Lightweight and Flexible Rotors for Positive Displacement Devices

A rotor for a progressive cavity device has a central axis and includes an outer tubular. The outer tubular has a radially outer surface and a radially inner surface defining a rotor cavity. The outer surface includes at least one helical rotor lobe. The rotor also includes a filler structure disposed within the rotor cavity. The outer tubular is made of a first material having a first density and the filler structure is made of a second material having a second density that is less than the first density. 1. A rotor for a progressive cavity device , the rotor having a central axis and comprising:an outer tubular having a radially outer surface and a radially inner surface defining a rotor cavity, wherein the outer surface includes at least one helical rotor lobe; anda filler structure disposed within the rotor cavity;wherein the outer tubular is made of a first material having a first density and the filler structure is made of a second material having a second density that is less than the first density.2. The rotor of claim 1 , wherein the first material is steel and the second material is an elastomer or polymer.3. The rotor of claim 1 , further comprising an inner tubular disposed within the outer tubular claim 1 , wherein the filler structure is radially positioned between the outer tubular and the inner tubular.4. The rotor of claim 3 , wherein an annulus is radially positioned between the inner tubular and the outer tubular claim 3 , wherein the filler structure is disposed in the annulus.5. The rotor of claim 3 , wherein the radially inner surface of the outer tubular includes at least one helical lobe and wherein the inner tubular contacts the at least one helical lobe on the radially inner surface of the outer tubular.6. The rotor of claim 3 , wherein the inner tubular is made of a third material having a third density claim 3 , wherein the second density is less than the third density.7. The rotor of claim 6 , wherein the first material and the third ...

Slurry Pump

In a rotor in rotor configuration, a pump has inward projections on an outer rotor and outward projections on an inner rotor. The outer rotor is driven and the projections mesh to create variable volume chambers. The outer rotor may be driven in both directions. In each direction, the driving part (first inward projection) of the outer rotor contacts a sealing surface on one side of an outward projection of the inner rotor, while a gap is left between a sealing surface of the other side of the outward projection and a second inward projection. The gap may have uniform width along its length in the radial direction, while in a direction parallel to the rotor axis it may be discontinuous or have variable size to create flow paths for gases. 1. A fluid transfer device comprising:a housing having an inward facing surface;an outer rotor secured for rotation about an outer rotor axis that is fixed in relation to the housing, the outer rotor having inward projections, the outer rotor being arranged to be driven in operation by a drive shaft;an inner rotor secured for rotation about an inner rotor axis that is fixed in relation to the housing, the inner rotor axis being inside the outer rotor, the inner rotor having outward projections, the outward projections in operation meshing with the inward projections to define variable volume chambers as the inner rotor and outer rotor rotate; fluid transfer passages in a portion of the housing to permit flow of fluid into and out of the variable volume chambers; andeach outward projection having a first sealing surface and a second sealing surface circumferentially opposed to each other for respective engagement with corresponding sealing surfaces of adjacent inward projections such that in an operational configuration in which the outer rotor is driven in a first direction, the first sealing surface seals against a first corresponding inward projection with a first gap between at least part of the second sealing surface and a ...

Gear Wheel with Meshing Teeth

The invention concerns a gear wheel () having a plurality of identical teeth suitable for meshing in parallel with a similar second gear wheel in a casing () of a hydraulic machine, said gear wheel having a side face of the front toothing () and a side face of the rear toothing () suitable for dragging in rotation against a front bush () and a rear bush (), respectively, said bushes () being slotted onto a sleeve () fixedly connected to the gear wheel (), said helical teeth extending along the entire gear wheel () between the front side face () and the rear side face (), where both the side face of the front toothing () and the side face of the rear toothing () have, at each tooth, a removed rotor portion (), so as to have an area of the side faces of the toothing that does not come into contact with the bush when the latter is placed in abutment against the respective side face of the toothing of the gear wheel. 1. A Gear wheel having a plurality of identical teeth suitable for meshing in parallel with a similar second gear wheel in a casing of a hydraulic machine , said gear wheel having a side face of the front toothing and a side face of the rear toothing suitable for dragging in rotation against a front bush and a rear bush respectively , said bushes being slotted onto a sleeve fixedly connected to the gear wheel , said helical teeth extending along the entire gear wheel between the front side face and the rear side face , wherein both the side face of the front toothing and the side face of the rear toothing have , at each tooth , a rotor portion removed , so as to have an area of the side faces of the toothing that does not come into contact with the bush when the latter is placed in abutment against the respective side face of the toothing of the gear wheel.2. The gear wheel according to claim 1 , wherein said removed portion comprises a chamfer uniformly distributed along the entire perimeter of the side faces of the toothing.3. The gear wheel according to ...

Fluid Delivery System With A Shaft Having A Through-Passage

A fluid delivery system having at least one fluid storage device and a pump with at least one fluid driver with a flow-through shaft that has a through-passage. The pump includes a casing, and at least one fluid driver having a prime mover and at least one fluid displacement member. A shaft of the prime mover and/or a shaft of the fluid displacement member and/or a common shaft of the prime mover/fluid displacement member (depending on the configuration of the pump) is a flow-through shaft with a through-passage configuration that allows fluid communication between at least one port of the pump and the at least one fluid storage device. 1. A pump comprising:a casing defining an interior volume, the casing including a first port in fluid communication with the interior volume, and a second port in fluid communication with the interior volume;a first gear disposed within the interior volume, the first gear having a first gear body and a plurality of first gear teeth;a second gear disposed within the interior volume, the second gear having a second gear body and a plurality of second gear teeth projecting radially outwardly from the second gear body, the second gear is disposed such that a second face of at least one tooth of the plurality of second gear teeth aligns with a first face of at least one tooth of the plurality of first gear teeth;a first motor that rotates the first gear about a first axial centerline of the first gear in a first direction to transfer a fluid from the first port to the second port along a first flow path;a second motor that rotates the second gear, independently of the first motor, about a second axial centerline of the second gear in a second direction to contact the second face with the first face and to transfer the fluid from the first port to the second port along a second flow path; andat least one flow-through shaft disposed in at least one of the first motor, the second motor, the first gear and the second gear, each of the at ...

SYSTEMS AND DEVICES FOR PUMPING AND CONTROLLING HIGH TEMPERATURE FLUIDS

The disclosed technology includes pumps, pipes, valves, seals, and systems for pumping and controlling high temperature fluids, such as liquid tin, at temperatures of between 1000-3000° C. The systems and device may be partially or entirely constructed using brittle materials, such as ceramics, that are capable of withstanding extreme heat without significantly degrading, and may be secured using components made of refractory metals, such as tungsten. The systems and devices may utilize static and dynamic seals made from brittle materials, such as graphite, to enable the high temperature operation of such pumps, pipes, valves, and systems without leakage. 1. A pump for pumping at least one of liquids and gases , the pump being formed at least in part from at least one brittle material and configured to operate at temperatures between 500° C. and 3000° C.2. The pump of claim 1 , comprised of a first brittle material and having a seal comprised of a second brittle material.3. The pump of claim 2 , further comprising stationary components sealed by a static seal comprised of the second brittle material and moveable components sealed with a dynamic seal comprised of the second brittle material.4. The pump of comprising: a closed face having an aperture for receiving a shaft;', 'an open face;', 'a chamber disposed between the closed face and the open face, the chamber housing at least a first gear, the first gear being attached to the shaft; and', 'a first plurality of apertures for receiving securing members;, 'a pump body made of the first brittle material, the pump body comprisinga first plate positioned externally to the closed face of the pump body, the first plate being made of the first brittle material or a refractory metal and having an aperture for receiving the shaft and a second plurality of apertures for receiving securing members;a plurality of securing members that are disposed in the first and second plurality of apertures to secure the first plate to the ...

GEAR PUMP FOR COMPRESSIBLE LIQUIDS OR FLUIDS

Disclosed is a gear pump including a pumping chamber in which a first shaft and a second shaft are rotated about their respective axes, each of the first and second shafts supporting at least one hydraulic-pumping element that hydraulically pumps a fluid in the pumping chamber, the at least one hydraulic-pumping element of each of the first and second shafts being positioned in the pumping chamber and each having at least one first radial projection. In the pumping chamber, each of the first and second shafts further supports at least one mechanical drive pinion that rotates each of the first and second shafts, each mechanical drive pinion having second radial projections. The at least one mechanical drive pinion is separate from the at least one hydraulic-pumping element, and the number of the at least one first radial projection and of the second radial projections is different. 1128989. Gear pump () comprising a pumping chamber () in which a first shaft () and a second shaft () are driven in rotation about the respective axis thereof (D , D) ,{'b': 8', '9', '20', '2', '20', '8', '9', '2', '21, 'each of the first and second shafts (, ) bearing at least one hydraulic pumping element () providing the hydraulic pumping of a fluid in the pumping chamber (), said at least one hydraulic pumping element () of each of said first and second shafts (, ) being positioned in said pumping chamber () and each having at least one first radial projection (), wherein'}{'b': 2', '8', '9', '14', '8', '9', '14', '15', '8', '9', '14', '20, 'in the pumping chamber (), each of said first and second shafts (, ) also bears at least one pinion () for mechanically driving in rotation each of said first and second shafts (, ), each mechanical drive pinion () having second radial projections (), wherein, on each of said first and second shafts (, ), said at least one mechanical drive pinion () is distinct from said at least one hydraulic pumping element (),'}{'b': 21', '15, 'and wherein said ...

ROTARY PUMP WITH ROTOR BEARING RING

Lobe pumps have rings which can be located at least partially in at least one of cover plates and rotors, if not both to provide at least thrust bearings to space the rotors from the cover plates. Some rotors may have voids in ears to make the rotor lighter in weight with the voids potentially capped, symmetrically disposed, arcuately shaped and/or have other desirable features. Some rotors may have ears extending beyond cutouts which may extend beyond hubs, if not beyond hub extensions as well which may receive cover spigots thereabout. Some rings may act as radial bearings as well when located in the cover spigots. 1. A rotary lobe pump comprising:a rotor housing assisting defining a cavity intermediate side walls, an end wall and a cover plate;parallel first and second shafts extend into the cavity from the end wall;an inlet port and an outlet port communicating with the cavity;first and second rotors connected to the first and second shafts, respectively; each of the first and second rotors having ears with faces directed toward the cover plate connected to a central hub with the hub connected to the respective first and second shaft; andfirst rings intermediate each of the first and second rotors and the cover plate located at least partially in a first ring groove circumnavigating one of the cover plate and rotor, said first rings providing at least a thrust bearing spacing the faces of the first and second rotors from the cover plate.2. The rotary lobe pump of further comprising (a) cutouts spacing portions of the ears from the shaft and (b) cover spigots extending from the cover plate claim 1 , said cover spigots receiving and surrounding portions of the first and second shafts and extending into the cutouts.3. The rotary lobe pump of wherein the cutout extends a depth of at least ⅓ of a depth of the ears.4. The rotary lobe pump of further comprising voids in the ears.5. The rotary lobe pump of wherein at least some of the voids have a depth greater than a ...

Helical spring for a pump having an adjustable delivery volume

A pump having an adjustable delivery volume, including: a pump housing featuring a delivery chamber which includes a delivery chamber inlet for a fluid and a delivery chamber outlet for the fluid; a delivery member, which can be rotated within the delivery chamber, for delivering the fluid; an adjusting device featuring a setting structure, which is mounted such that it can move back and forth within the pump housing in order to adjust the delivery volume of the pump, and a helical spring for applying a spring force, which acts in a setting direction, to the setting structure, wherein the windings of the helical spring are enclosed by an envelope lying on the outside of the helical spring wherein the cross-sectional area of the envelope as measured transversely with respect to the longitudinal direction of the spring changes progressively in the longitudinal direction of the spring.

Pump for an engine

A pump for an engine includes a suction chamber, a discharge chamber, and a piston at least partly received within a relief chamber. The piston has first and second passageways provided therein. The second passageway is located closer to a face of the piston than the first passageway. The piston is movable within the relief chamber, so that the volume of the fluid transfer from the suction chamber to the discharge chamber is varied according to a pressure in the relief chamber. The first and second passageways form fluid paths between the suction chamber and the discharge chamber at a first and second pressure in the relief chamber, respectively, the first pressure being less than the second pressure.

Dual chamber and gear pump assembly for a high pressure delivery system

A high pressure delivery device for delivering a medicament includes a first chamber for storing a supply of the medicament and a second chamber in fluid communication with the first chamber. A fluid connection path is in fluid communication with the second chamber for administering the medicament. A valving system is in fluid communication with the first chamber, the second chamber and the fluid connection path. The valving system allows a dose of the medicament to be injected from the first chamber into the second chamber while substantially preventing backflow of the dose into the first chamber and substantially preventing leakage through the fluid connection path. The valving system also allows the dose in the second chamber to be administered through the fluid connection path while substantially preventing the dose from flowing back into the first chamber.

OIL PUMP

An oil pump is configured to include a rotor, a drive shaft that drives the rotor to rotate, a rotor chamber in which the rotor is contained, an inlet port and an outlet port each provided in the vicinity of the rotor chamber, and a pump cover. The pump cover is made of a resin. On a portion of an outer surface side of the pump cover corresponding to an inner portion, in which oil circulates, of the pump cover, a rib that has an erecting wall shape is provided. 1. An oil pump comprising:a rotor;a drive shaft that drives the rotor to rotate;a rotor chamber in which the rotor is contained;an inlet port and an outlet port each provided in the vicinity of the rotor chamber; anda pump cover, whereinthe pump cover is made of a resin, andon a portion of an outer surface side of the pump cover corresponding to an inner portion, in which oil circulates, of the pump cover, a rib that has an erecting wall shape is provided.2. The oil pump according to claim 1 , wherein the rib is formed along a shape of the outlet port.3. The oil pump according to claim 1 , wherein the rib is formed on the portion corresponding to a range disposed at a radial middle portion of the outlet port and extending claim 1 , along a direction of the rotation of the rotor claim 1 , to the vicinity of a terminal end of the outlet port or to the vicinity of a beginning end of the inlet port.4. The oil pump according to claim 1 , wherein the rib is formed to extend gradually radially away from a periphery of an insertion portion which is disposed at a radial middle portion of the outlet port and through which the drive shaft is inserted claim 1 , and a portion of the rib extending away has a linear shape.5. The oil pump according to claim 1 , wherein claim 1 , on an outer peripheral side or an inner peripheral side of the rib claim 1 , an auxiliary rib having a length claim 1 , in a direction of the rotation claim 1 , which is shorter than that of the rib is formed to be radially spaced apart by a ...

AERATION PREVENTING APPARATUS

An aeration preventing apparatus including a partition erected on an upper surface of a bottom wall portion of a case member to separate a reservoir space of oil into a radially inward space and a radially outward space and provided with openings formed over a whole circumference in the partition so as to communicate the radially inward space and the radially outward space, an oil passage forming part forming an oil passage from a suction port facing the radially inward space to an oil pump, a movable plate formed in a substantially arc shape and disposed facing a peripheral surface of the partition so as to cover a part of the openings, and a plate support supporting the movable plate to be movable along the peripheral surface of the partition by a gravitational or inertial force acting on the movable plate. 1. An aeration preventing apparatus , comprising:a case member installed in a vehicle and including a bottom wall portion and a side wall portion to form a reservoir space for accumulating an oil supplied from an oil pump;a partition erected on an upper surface of the bottom wall portion and formed in a substantially cylindrical shape about a axial line in a vertical direction to separate the reservoir space into a radially inward space and a radially outward space, the partition including openings formed over a whole circumference in the partition so as to communicate the radially inward space and the radially outward space;an oil passage forming part configured to form an oil passage from a suction port facing the radially inward space to the oil pump;a movable plate formed in a substantially arc shape about the axial line and disposed facing a peripheral surface of the partition so as to cover a part of the openings; anda plate support configured to support the movable plate to be movable along the peripheral surface of the partition by a gravitational or inertial force acting on the movable plate.2. The aeration preventing apparatus according to claim 1 , ...

Hydrodynamic gear assembly

A gear assembly includes a first gear having a first pitch diameter and a second gear having a second pitch diameter different than the first pitch diameter. The first and second gears are located in a housing bore having a cusp line between first and second sections of the housing bore corresponding to the first and second gears. A first gear bearing is located in the first section of the housing bore and has a first flat side. A second gear bearing is located in the second section of the housing bore and has a second flat side. The second flat side is configured to press against the first flat side along the cusp line of the gear housing based on a pressurized fluid being provided to the housing bore.

DUAL INPUT PUMP AND SYSTEM

A dual input fluid pump system for coupling to a transmission or an engine and an electrical motor is disclosed. The system may include a first external gear, vane, internal gear, or gerotor-type pump, a second external gear pump, and connecting shaft. Gears of the second pump include one-way clutch bearings that enable operation of the system in multiple modes including engine-only; motor-only; a combined mode where the engine operates the first pump via the shaft and the motor operates the second pump with an external gear rotating in its pumping direction at a rate greater than the shaft; inlet boost; and a disconnection mode. Also noted is a pump that has a first shaft for coupling the engine to a first external gear and a second shaft for coupling the motor to a second external gear, as well as a one-way clutch bearing that performs in a similar manner. 1. A dual input fluid pump system for coupling to a transmission or an internal combustion engine power source and an electrical motor power source , the pump system comprising:a first pump comprising a housing, a rotatable pumping element rotatably mounted in the housing, an inlet, an outlet, and a first input shaft for coupling the transmission or internal combustion engine power source to the rotatable pumping element thereof for rotating the rotatable pumping element in a pumping direction to pump fluid from the inlet to the outlet through the housing;a second pump that is an external gear pump comprising a housing, at least first and second intermeshed external gears rotatably mounted in the housing, an inlet, an outlet, and a second input shaft for coupling the electrical motor power source to the second external gear thereof for rotating the gears in counter-rotating pumping directions to pump fluid from the inlet to the outlet through the housing; anda connecting shaft between the rotatable pumping element of the first pump and the first external gear of the second pump, the connecting shaft being ...

GEAR PUMP AND METHOD FOR MONITORING A GEAR PUMP

A gear pump includes at least a first and a second rotatable element, wherein the first rotatable element has a toothing system which interacts with a toothing system of the second rotatable element. The gear pump further includes a housing in which the first and/or the second rotatable element are at least partially arranged, and at least one transmitter, which is arranged on the housing, for exciting acoustic waves in the housing. At least one receiver is arranged on the housing, for receiving the acoustic waves which are excited in the housing. Information about properties of the gear pump and/or of a pumping medium can be determined by evaluating a signal which is generated by the receiver when the acoustic waves are received. 1. A gear pump comprising: the first rotatable element has a toothing system which interacts with a toothing system of the second rotatable element;', 'a housing in which the first and/or the second rotatable element are at least partially arranged, and', 'at least one transmitter, which is arranged on the housing, for exciting acoustic waves in the housing and also at least one receiver, which is arranged on the housing, for receiving the acoustic waves which are excited in the housing, wherein information about properties of the gear pump and/or of a pumping medium can be determined by evaluating a signal which is generated by the receiver when the acoustic waves are received., 'at least a first and a second rotatable element, wherein2. The gear pump as claimed in claim 1 , wherein the toothing systems of the first and of the second rotatable element run obliquely in relation to the rotation axis of the respective rotatable element.3. The gear pump as claimed in claim 2 , wherein the gear pump is a screw-spindle pump claim 2 , wherein the toothing systems of the first and of the second rotatable element are each designed in the form of a threaded profile.4. The gear pump as claimed in claim 2 , wherein the transmitter and the receiver ...

TANK FOR STORAGE AND DELIVERY OF FLUIDS INCLUDING FUNCTIONAL COMPONENTS DISPOSED ON THE TANK WALL

A tank for motor vehicle includes a tank wall, a fill opening, an outlet opening, a plurality of functional components, and a plurality of attachment formations. The tank wall forms an outermost casing of the tank. The fill opening passes through the tank wall for inlet of operating fluid into the tank. The outlet opening passes through the tank wall for outlet of the operating fluid. The plurality of functional components are designed for pumping and/or for cleaning and/or for detecting a property and/or for changing a property of the operating fluid. The plurality of attachment formations are designed as being integral with the tank wall for positioning of a plurality of functional components on the tank wall. The functional components are disposed on segments of the tank wall, which are arranged at an incline to each other. 2. The tank according to claim 1 , wherein the tank wall comprises a top wall claim 1 , a bottom wall opposite to the top wall claim 1 , and a side wall connecting the top wall to the bottom wall claim 1 , wherein the top wall claim 1 , the bottom wall and the side wall form tank wall segments arranged at an incline to each other.3. The tank according to claim 1 , wherein at the tank wall claim 1 , preferably at the outer side of the tank wall claim 1 , as one functional component a pumping device is arranged for pumping of operating fluid claim 1 , wherein the pumping device features a suction side for the intake of operating fluid and a pressure side for the ejection of operating fluid.4. The tank according to claim 1 , wherein at the tank wall claim 1 , as one functional component a filter device is arranged for filtering of operating fluid.5. The tank according to claim 1 ,wherein the filter device is connected to the pumping device by a first line extending into the interior of the tank for guiding the operating fluid, wherein the first line features an inlet end nearer to the filter device, and an outlet end nearer to the pumping device, ...

Dual pump system

Provided is a dual pump system including: a dual pump provided with a plurality of chambers independent from each other, wherein an input and an output port are provided in each of the chambers; a plurality of output lines connected to the output ports of the plurality of chambers, respectively; and a switching valve that is provided in an output line of one side of the plurality of output lines, enables a fluid to flow to the output line when operating in one direction, and enables the fluid to be drained to an oil pan through a bypass line branched from the output line when operating in the other direction.

NON-LUBRICATING FLUID PUMPING SYSTEM

One or more techniques and/or systems are disclosed for a pump technology that provides for more effective and efficient transfer of liquids, such as glycol products, in a glycol dehydration system. Such a technology can comprise a type of external gear pump that can effectively handle harsh conditions associated with glycol dehydration system at high pressures, while providing for longer pump life, effective operations at higher temperatures, and operations that account for thermal shock; with improved sealing capability, in a cost-effective system. An example pump may comprise hardened internal components, improved clearances, a jacket to mitigate thermal shock, and/or a thermal shock plate to mitigate thermal shock. 1. A pump for pumping non-lubricating fluids , comprising:an internal pump chamber comprising a first material;a driver shaft that provides rotational power to the pump;a driven shaft that rotates as a result of the rotational power from the driver shaft;a first external gear disposed on the driver shaft in the internal pump chamber, the first external gear comprising a second material;a second external gear disposed on the driven shaft in the internal pump chamber, the second external gear comprising the second material, the first gear and the second gear being disposed in an intermeshing engagement that drives fluid through the internal pump chamber under the rotational power; anda head assembly disposed at an end of the driver shaft and the driven shaft;wherein the first material is different than the second material, and the first material and the second material are rated to 350° F. and are resistant to thermal shock.2. The pump of claim 1 , wherein the fluid comprises glycol.3. The pump of claim 1 , wherein the first material comprises ductile iron and the second material comprises steel claim 1 , hardened steel claim 1 , or a steel alloy.4. The pump of claim 1 , further comprising self-lubricating bushings operably connected to the driver shaft ...

Sintering a Multi-lobed Helical Rotor

The present disclosure relates to a method and system for manufacturing a multi-lobed helical rotor. The method for manufacturing a multi-lobed helical rotor may comprise mixing one or more powdered metals, compacting a mixture of one or more powdered metals to form a solid metal piece, sintering the solid metal piece, and polishing the solid metal piece. The system may comprise a positive displacement pump, which may comprise a casing, a multi-lobed helical rotor disposed in the casing, wherein the multi-lobed helical rotor comprise sintered powdered metals, an inlet to the casing, and an outlet leading from the casing. 1. A method for manufacturing a multi-lobed helical rotor comprising:mixing one or more powdered metals;compacting a mixture of the one or more powdered metals to form a solid metal piece;sintering the solid metal piece; andpolishing the solid metal piece.2. The method of claim 1 , further comprising choosing the one or more powdered metals as the base material for the multi-lobed helical rotor.3. The method of claim 1 , further comprising choosing the one or more powdered metals and at least one additive as the base material for the multi-lobed helical rotor.4. The method of claim 1 , wherein the step of mixing comprises combining the one or more powdered metals with at least one additive.5. The method of claim 1 , wherein the step of compacting comprises adding the at least one powdered metal and at least one additive to a die.6. The method of claim 5 , wherein the step of compacting comprises compacting the at least one powdered metal and at least one additive with a hydraulic ram.7. The method of claim 6 , wherein the step of compacting the at least one powdered metal and the at least one additive with a hydraulic ram forms the multi-lobed helical rotor.8. The method of claim 7 , wherein the step of sintering comprises placing the multi-lobed helical rotor in a furnace.{'claim-ref': {'@idref': 'CLM-00008', 'claim 8'}, 'The method of , wherein ...

Compact integrated-drive pumps

Pump assemblies are disclosed that have a magnetically driven pump-head subassembly and a pump-driver subassembly coupled thereto, wherein the pump-driver subassembly includes a pump-driver enclosure. The pump-head subassembly comprises a rotatable magnet contained in a magnet cup extending into the pump-driver enclosure. The pump-driver subassembly has a printed circuit board (PCB) in the pump-driver enclosure and a stator mounted to the PCB. The stator coaxially surrounds the magnet cup. The magnet cup has a distal-end wall. The printed circuit board includes a stator-driving circuit and at least one signal-processing circuit. The PCB defines a void relative to the distal-end wall that exposes at least half the distal-end wall. The pump-driver enclosure has an aspect ratio of no greater than one (unity).

PUMP

A pump. 1. A pump comprising:a plurality of pump rotor housings, each having a work rotor and a sealing rotor that cooperate to compress fluid in the respective pump rotor housing between a first chamber and a second chamber;at least one inlet to the pump and at least one outlet to the pump; andat least one shaft that together drives the work rotor and sealing rotor.2. The pump of where each of the plurality of pump rotor housings are isolated from each other such that fluid that enters a first chamber of one of the plurality of pump rotor housings does not enter a first chamber of any other of the plurality of pump rotor housings.3. The pump of where each pump rotor housing has an inlet and an outlet different from those of any other pump rotor housing.4. The pump of where the second chamber of one of the plurality of pump rotor housings releases fluid into a first chamber of another one of the plurality of pump rotor housings.5. The pump of having a plurality of outlets that each exhaust compressed fluid that has not intermixed with compressed fluid exhausted from the other ones of the plurality of outlets.6. The pump of having a member interposed between the plurality of pump rotor housings that defines a path through which the fluid flows between the second chamber of one of the plurality of pump rotor housings and the first chamber of another one of the plurality of pump rotor housings claim 4 , the path comprising an elongate portion and opposed first and second openings on either side of the elongate portion claim 4 , the first opening receiving fluid from the second chamber and the second opening releasing fluid into the first chamber.7. The pump of where the work rotor includes a vane claim 1 , and the sealing rotor includes a notch into which the vane engages during rotation of the sealing rotor and the work rotor claim 1 , and where the vane is shaped to cause negative feedback on the entry of fluid into the notch as the vane released from the notch.8. ...

PUMPS AND HYDRAULIC CIRCUITS INCLUDING VENTURI ASSEMBLY

A hydraulic circuit includes a pump in fluid communication with a reservoir containing a liquid to be pumped. The pump includes an inlet and an outlet. The hydraulic circuit also includes a venturi pump in fluid communication with the reservoir and with the outlet of the pump, and an injection valve including a cooling feature. The injection valve is in fluid communication with the outlet of the pump, and is configured to dispense liquid supplied to the injection valve by the pump. The cooling feature is in fluid communication with the venturi pump. The pump is configured to produce a first flow of liquid, and the hydraulic circuit is configured to supply a first portion of the first flow of liquid to the injection valve for dispensing by the injection valve and a second portion of the first flow of liquid to the venturi pump. 1. A hydraulic circuit , comprising:a pump in fluid communication with a reservoir containing a liquid to be pumped, the pump including an inlet and an outlet;a venturi pump in fluid communication with the reservoir and with the outlet of the pump;an injection valve including a cooling feature, the injection valve being in fluid communication with the outlet of the pump and configured to dispense liquid supplied to the injection valve by the pump, the cooling feature being in fluid communication with the venturi pump;wherein the pump is configured to produce a first flow of liquid, and the hydraulic circuit is configured to supply a first portion of the first flow of liquid to the injection valve for dispensing by the injection valve and a second portion of the first flow of liquid to the venturi pump.2. The hydraulic circuit of claim 1 , wherein the venturi pump is configured to produce a second flow of liquid from the reservoir and combine the second flow of liquid with the second portion of the first flow of liquid to produce a venturi pump liquid flow.3. The hydraulic circuit of claim 2 , wherein the hydraulic circuit is configured to ...

HORIZONTAL AND VERTICAL WELL FLUID PUMPING SYSTEM

A pump system for producing fluids from a reservoir using a wellbore having a vertical section with a casing defining an annulus, a transitional section and a horizontal section, and a production tubing having a vertical section and a horizontal section, wherein the system includes a completion with an isolation device in the annulus near the bottom of the vertical section, a gas/liquid separator for receiving produced fluids from the horizontal section, and a vertical lift pump; a continuous flow path from the terminus of the production tubing to the vertical section; a plurality of horizontal pumps in the horizontal section, each having an intake exposed to the reservoir and an outlet in the continuous flow path. The horizontal length of the production tubing is closed to the reservoir except through the horizontal pumps. A method of producing fluids includes isolating a vertical section of a wellbore from a horizontal section; isolating the production tubing from the reservoir; pumping fluid from the reservoir adjacent a toe segment into a production tubing toe segment and towards the heel segment; and pumping fluid from the reservoir adjacent a heel segment into the production tubing heel segment and towards the vertical section, and pumping fluid up the vertical section to the surface. Also disclosed is a diaphragm pump. 1. A pump system for producing fluids from a reservoir using a wellbore having a vertical section with a casing defining an annulus , a transitional section and a horizontal section , and a production tubing having a vertical length and a horizontal length ending in a terminus , the system comprising:(a) a completion near a lower end of the vertical section or in the transitional section comprising: an isolation device in the annulus, a gas/liquid separator for receiving produced fluids from the horizontal length of the production tubing, and a vertical lift pump having an intake in the annulus above the isolation device;(b) a continuous flow ...

FUEL PUMP

A pump housing includes: a slide surface, along which inner and outer gears are slid; a suction guide passage, which is recessed from the slide surface and guides the fuel at a suction side; a discharge passage, which is recessed from the slide surface-and guides the fuel at a discharge side; and a communication groove, which is recessed from the slide surface and is shaped into an arcuate form that extends along a circumcircle of the inner gear. The communication groove is communicated with the suction groove and the discharge passage through two opposite groove end parts, respectively, of the communication groove. 1. A fuel pump comprising:an outer gear that includes a plurality of internal teeth;an inner gear that includes a plurality of external teeth and is meshed with the outer gear while the inner gear is eccentric to the outer gear; anda pump housing that rotatably receives the outer gear and the inner gear, wherein:when the outer gear and the inner gear are rotated to increase and decrease volumes of a plurality of pump chambers, which are formed between the outer gear and the inner gear, fuel is sequentially drawn into and is discharged from the plurality of pump chambers; and a pair of slide surfaces which hold the outer gear and the inner gear from two opposite sides, respectively, in an axial direction, so that the outer gear and the inner gear are slid along the pair of slide surfaces;', 'a suction guide passage that is recessed from at least one of the pair of slide surfaces and guides fuel at a suction side;, 'the pump housing includesa discharge guide passage that is recessed from the slide surface, at which the suction guide passage is formed, wherein the discharge guide passage guides the fuel at a discharge side;a communication groove that is recessed from the slide surface at which the suction guide passage and the discharge guide passage are formed, wherein the communication groove is shaped into an arcuate form that extends along a ...

FORKLIFT, INTERNAL GEAR PUMP, AND AXIAL COMPENSATION COMPONENT THEREOF

The present disclosure provides a forklift, an internal gear pump, and an axial compensation component thereof. The axial compensation component for the internal gear pump is configured to be sandwiched between a pump cover of the internal gear pump and a gear pair of the internal gear pump, and the axial compensation component includes: a floating side plate; and a floating sleeve fixed at a side of the floating side plate far away from the gear pair, in which a part of the floating sleeve is configured to extend into an oil storage tank of the pump cover, the oil storage tank is configured to be in communication with a high-pressure oil area of the internal gear pump, and the floating side plate is configured to press tightly against the gear pair under an oil pressure in the oil storage tank. 117.-. (canceled)18. An axial compensation component for an internal gear pump , configured to be sandwiched between a pump cover of the internal gear pump and a gear pair of the internal gear pump , the axial compensation component comprising:a floating side plate; anda floating sleeve fixed on a side of the floating side plate away from the gear pair,wherein a portion of the floating sleeve is configured to extend into an oil storage tank of the pump cover, the oil storage tank is configured to be in communication with a high-pressure oil region of the internal gear pump, and the floating side plate is configured to press tightly against the gear pair under an oil pressure in the oil storage tank.19. The axial compensation component according to claim 18 , wherein:a guide groove configured to be in communication with the high-pressure oil region of the internal gear pump is formed in a side of the floating side plate facing the gear pair, and an installation groove is formed in a side of the floating side plate facing the pump cover; anda portion of the floating sleeve is disposed in the installation groove via an interference fit, the floating sleeve is provided with a ...

Pump-Regulator Combination with Power Limitation

A pump-regulator combination includes first and second pumps, a control valve, first orifice, and pilot valve. The first pump is configured to pump fluid from a tank to a first point. The control valve is configured to control pressure and/or delivery flow at the first point by adjusting a displacement volume of the first pump. The second pump is configured to pump fluid from the tank to a second point, through the first orifice, and back to the tank. A highest load pressure of the actuator is connected to a third point. The pilot valve includes an adjustable second orifice connected to the third point, via a fourth point, and the tank to pass fluid from the actuator to the tank. A pressure at the second point acts to close the second orifice. A pressure of the fourth point acts to adjust the control valve. 1. A pump-regulator combination for use with a tank and at least one actuator , comprisinga first pump that has an adjustable displacement volume, and that is configured to plump pressure fluid from a tank to a work connection point;a control valve configured to control at least one of a pressure and a delivery flow at the work connection point by adjusting the adjustable displacement volume of the first pump;a second pump that has a constant displacement volume, that is configured to be jointly driven with the first pump, and that is further configured to pump pressure fluid from the tank to a first control point;a first orifice that is connected to the first control point and that is configured to connect to the tank to enable pressure fluid from the second pump to return to the tank; anda pilot valve including an adjustable second orifice, the second orifice connected to a load connection point via a second control point, the load connection point configured to connect to a highest load pressure of at least one actuator, and the second orifice further configured to connect to the tank to enable pressure fluid to pass from the load connection point to the tank; ...

SEALING ARRANGEMENT, A CONVEYING DEVICE HAVING A SEALING ARRANGEMENT AND A METHOD FOR OPERATING THE SEALING ARRANGEMENT

The invention relates to a sealing arrangement () for conveying devices, in particular for gear pumps, in which an inner space () can be sealed off from an outer space (), wherein the sealing arrangement comprises at least two parts () each having at least one sealing surface (), wherein the sealing surfaces () comprise: a first seal () along a first, medial perimeter of the sealing surface (), a second seal () along a second, lateral perimeter of the sealing surface (), a recess () between the first seal () and the second seal (), characterized in that the recess () can be connected to a source () of a flushing medium such that the recess () can be actively flushed with the flushing medium. 115.-. (canceled)17. The sealing arrangement as claimed in claim 16 , wherein at least one of the first seal and the second seal comprises an O ring or a spiral seal.18. The sealing arrangement as claimed in claim 16 , further comprising the source claim 16 , wherein the source is configured such that a constant flow of the flushing medium through the recess is maintained or such that a constant pressure of the flushing medium in the recess is maintained.19. The sealing arrangement as claimed in claim 18 , wherein the recess and the source are configured as a closed flushing medium circuit.20. The sealing arrangement as claimed in claim 16 , wherein at least a portion of the recess runs parallel to at least one of the first seal and the second seal.21. The sealing arrangement as claimed in claim 16 , further comprising an inlet point for the flushing medium and an outlet point for the flushing medium claim 16 , said inlet point and outlet point being operatively connected to the recess.22. The sealing arrangement as claimed in claim 16 , wherein the first part is a housing of the conveying device and the second part is a cover on the housing of the conveying device.23. The sealing arrangement as claimed in claim 16 , further comprising a flow sensor measuring a flow of flushing ...

Gerotor Pump And Method Of Making Pressure Equalization In A Gerotor Pump

A gerotor pump having an inner rotor and an outer rotor, which is also the rotor of an electric drive, having a housing and a flange which closes the housing with the motor compartment, the rotor being arranged on a shaft and sealing against the flange at a gap, wherein, in addition to the gap, there is at least one device with which at least a partial pressure compensation takes place between the suction region of the gerotor pump and the motor compartment of the gerotor pump. 1. A gerotor pump having an inner rotor and an outer rotor , which is also the rotor of an electric drive , having a housing and a flange which closes the housing with the motor compartment , the rotor being arranged on a shaft and sealing against the flange at a gap , wherein , in addition to the gap , there is at least one device with which at least a partial pressure compensation takes place between the suction region of the gerotor pump and the motor compartment of the gerotor pump.2. The gerotor pump according to claim 1 , wherein the device is a connection between the motor compartment and the suction region claim 1 , the connection being provided as a bore in the flange.3. The gerotor pump according to claim 1 , wherein the device consists of a cavity in the shaft and connections between the motor compartment and the cavity of the shaft and the cavity of the shaft to the suction region.4. The gerotor pump according to claim 3 , wherein the cavity in the shaft has a taper which serves as a throttle.5. The gerotor pump according to claim 1 , wherein the device consists of a cavity in the shaft and connections between the motor compartment and cavity of the shaft and cavity of the shaft to an eccentric bearing of the gerotor pump.6. The gerotor pump according to wherein at least one of the connections has a reduction in cross-section which serves as a throttle.7. A method for producing a pressure compensation in a gerotor pump according to one of the preceding claims claim 1 , wherein an ...

Pressure compensated external gear machine

Devices and systems relating to external gear machines that comprise microsurface shaping on the lateral surfaces of the gear teeth and/or bushing surfaces are provided. Such microsurface shaping may comprise a flat step to linear wedge profile, a flat step to flat step profile, or solely a linear wedge profile. The incorporation of microsurface shaping on the gear teeth and/or bushing plates contributes to improving the lubrication performance within the external gear machine and provides significant benefits, including the improvement of operating efficiency, life, and reliability of the system components. Methods for manufacturing the gear teeth and related bushings are also provided, the methods configured to optimize the overall axial balance within the system.

SCREW-TYPE POSITIVE DISPLACEMENT MACHINE

A screw-type positive displacement machine includes a housing with a first rotor and a second rotor which are mounted to rotate in the housing and which are driven in directions which are the opposite of one another. The positive displacement machine has a first motor and a second motor arranged in a drive casing and connected to the housing in such a way that the first rotor is driven by the first motor and the second rotor is driven by the second motor. Typically, the first motor and/or the second motor is an asynchronous motor. 1. Screw-type positive displacement machine comprising a housing with a first rotor and a second rotor mounted to rotate in the housing and driven in directions opposite of one another ,characterized in that the positive displacement machine comprises a first motor and a second motor arranged in a drive casing and connected to the housing in such a way that the first rotor is driven by the first motor and the second rotor is driven by the second motor.2. Positive displacement machine according to claim 1 , characterized in that the first motor and/or the second motor is an asynchronous motor.341. Positive displacement machine according to claim 1 , characterized in that the rotary part of the first motor is connected to the first rotor and/or the rotary part (″) of the second motor is connected to the second rotor.4. Positive displacement machine according to claim 1 , further comprising a first synchronization wheel and a second synchronization wheel claim 1 , which mesh with one another claim 1 , connected to the first rotor and second rotor respectively.5. Positive displacement machine according to claim 4 , characterized in that a contact surface between the first synchronization wheel and the second synchronization wheel is not lubricated.6. Positive displacement machine according to claim 4 , characterized in that the surface of the teeth of the first synchronization wheel and/or of the second synchronization wheel is covered by a ...

System And Method For Providing Stable Fluid Flow

An embodiment of a system with a minute measure of pulsatility in a flow of a fluid is described that comprises a first pump configured to flow the fluid to a junction at a first flow rate that comprises a measure of pulsatility; and a second pump configured to flow a portion of the fluid from the junction at a second flow rate that is less than the first flow rate to produce a flow of the fluid at a third flow rate from the junction with a minute measure of pulsatility. 1. (canceled)2. A system , comprising:a flow cell,the flow cell being configured to receive a sample fluid from a sample fluid source in fluid communication with the flow cell, and the flow cell being configured to receive a carrier fluid from a carrier fluid source in fluid communication with the flow cell,the carrier fluid having a carrier fluid flowrate,a first output pump,the first output pump being in fluid communication with a first junction, the first junction being in further fluid communication with the flow cell,the first output pump being in fluid communication with a second junction, the second junction being in fluid communication with the first junction,the first output pump being configured to flow a fluid from the first junction to the second junction along a first output pathway,a second output pump being in fluid communication with the first junction and in fluid communication with a second junction such that the first output pump, the first junction, the second output pump, and the second junction define a fluidic circuit,the second output pump being configured to flow fluid between the first junction and the second junction along a second fluid pathway, andthe first output pump and the second output pump being operable so as to effect an output flow of fluid from the second junction having an output flowrate greater than the carrier fluid flowrate,the output flowrate giving rise to a pressure differential that encourages sample fluid from the sample source into the flow cell.3. ...

Internal gear pump

An internal gear pump includes an outer rotor having internal teeth, an inner rotor rotatably disposed inside the outer rotor and having external teeth engaging with the internal teeth, and a pump housing. The pump housing includes: a holding recess rotatably holding the outer rotor and having a wall on which an outer peripheral face of the outer rotor is to slide; an inlet to take in a fluid into pump chambers defined between the inner rotor and the outer rotor; an outlet to discharge the fluid from the pump chambers; a case groove provided on the wall and to hold the fluid; and a joint groove provided on an upper land face defined between a trailing end of the inlet and a leading end of the outlet and on which the internal teeth and the external teeth are to slide.

GEAR PUMP

A gear pump includes: an inner rotor having external teeth; an outer rotor having a tubular inner housing portion in which the inner rotor is rotatably housed in an eccentric state, and internal teeth meshing with the external teeth; a first core having a tubular rotor housing portion in which the inner and outer rotors are housed, and a flange portion projecting radially outward from a tube wall of the rotor housing portion; a board-shaped second core having a contact portion in contact with the flange portion in an axial direction, and closing an opening of the rotor housing portion; and a housing opposing the second core and made of a resin. A gap is formed between opposing surfaces of the second core and the housing in a state where the flange portion is in contact with the contact portion and the housing opposes the second core. 1. A gear pump comprising:an inner rotor having external teeth;an outer rotor having a tubular inner housing portion in which the inner rotor is rotatably housed in an eccentric state, and internal teeth that mesh with the external teeth;a first core having a tubular rotor housing portion in which the inner rotor and the outer rotor are housed, and a flange portion projecting radially outward from a tube wall of the rotor housing portion;a board-shaped second core having a contact portion that is in contact with the flange portion in an axial direction, and closing an opening of the rotor housing portion; anda housing disposed so as to oppose the second core and made of a resin, whereina gap is formed between opposing surfaces of the second core and the housing in a state where the flange portion and the contact portion are in contact with each other and the housing is disposed so as to oppose the second core.2. The gear pump according to claim 1 , further comprising:a fastening member inserted into fastening holes provided in the flange portion, the contact portion, and the housing and fastening the first core, the second core, and the ...

Rotary pump and brake device having the same

A rotary pump includes a first side plate and a second side plate between which an outer rotor and an inner rotor are arranged. The second side plate has a concave portion on a surface adjacent to a maximum gap portion relative to a drive shaft. The concave portion is located in an outer teeth passing section which is defined between a line on which a teeth tip of an outer teeth part of the inner rotor passes in response to rotation of the inner rotor and a line on which a teeth bottom of the outer teeth part of the inner rotor passes in response to rotation of the inner rotor. The concave portion communicates with one of a plurality of gap portions while the inner rotor is rotated.

Toy Fluid Pumping Gun

A fluid pumping device is disclosed. The fluid pumping device includes a housing having a front end and a rear end, a fluid discharge opening in the front end of the housing, a pump assembly, a crank assembly rotatably connected to the pump assembly wherein the crank assembly operates the pump assembly, and a fluid storage reservoir connected to the gear housing from which fluid is drawn into the gear housing to be pumped through the fluid discharge opening. 1. A fluid pumping device comprising:a housing having a top;a fluid discharge opening in the housing;a pump assembly;a fluid storage reservoir connected to the pump assembly;a fluid path connected to the fluid storage reservoir and the fluid discharge opening; anda plurality of nozzles on the top of the housing wherein the nozzles are not fluidly connected to the fluid path and wherein the plurality of nozzles configured to be placed over the fluid discharge opening.2. The fluid pumping device of wherein the pump assembly comprising:a first gear; anda second gear, wherein the first gear is larger in diameter than the second gear and wherein the gear ratio between the first gear and the second gear is 15:1.3. The fluid pumping device of further comprising a crank assembly rotatably connected to the pump assembly wherein the crank assembly operates the pump assembly.4. The fluid pumping device of wherein the crank assembly further comprising:a crank arm; anda crank handle connected to the crank arm.5. The fluid pumping device of wherein the crank arm further comprising at least one notch and wherein the crank handle may be connected to the crank arm through the at least one notch.6. The fluid pumping device of wherein the crank arm further comprising at least two notches and wherein the crank handle may be connected to the crank arm through any one of the at least two notches whereby the length of the crank arm is determined by the position of the crank handle.7. The fluid pumping device of further comprising at ...

A beverage dispensing machine and a gear pump therefor

A gear pump for a beverage dispensing machine, has a pump chamber, and a driving gear wheel meshing with a driven gear wheel inside the pump chamber.

Dual-screen movement converter

A dual-screw movement converter, in which a movement converter between a drive organ includes a screw fixed in translation and driven in rotation, having threads, a nut connected in translation to the receptor organ, having first threads engaging with the threads of the screw and second threads. A sleeve coaxially surrounds the nut, fixed in rotation and translation with respect to the screw and having threads with which the second threads of the nut engage. To the nut, slaved by its second threads to the threads of the sleeve, screw communicates a combined movement of rotation and translation whose translation component along an axis is transmitted to the receptor organ. 1. A screw-operated movement converter between a drive organ and a receptor organ , comprising:a screw having an axis of rotation, fixed in translation and driven in rotation, and having threads;a nut connected in translation to the receptor organ and having first threads engaging with the threads of the screw and second threads; anda sleeve coaxially surrounding the nut and fixed in rotation and in translation with respect to the screw and having threads with which the second threads of the nut engage;wherein the screw, driven in rotation, communicates to the nut, slaved by the second threads to the threads of the sleeve, a combined movement of rotation and translation whose translation component along the axis of rotation is transmitted to the receptor organ.2. The converter of claim 1 , wherein the first threads of the nut are interior threads and the screw has corresponding exterior threads.3. The converter of claim 1 , wherein the second threads of the nut have a length less than one half-turn.4. The converter of claim 1 , wherein the threads of the sleeve are composed of one or more thread segments of different pitch.5. The converter of claim 3 , wherein the second threads of the nut have the shape of a curvilinear parallelogram whose large sides claim 3 , slightly curved claim 3 , are ...

TRIPLE GEAR PUMP AND FLUID SUPPLYING DEVICE

A gear pump is comprised of a driving gear, a first driven gear and second driven gears mutually in mesh; a housing accommodating them and defining a flow path including a first suction port, a second suction port, a first pressure port and a second pressure port; a floating comprising a thrust face bearing a floating force exerted by fluids and first, second and third pressure-receiving faces respectively oriented in a direction opposed to the thrust face; a first pressurizing chamber having fluid connection with the first pressure port or the second pressure port to exert pressure on the first pressure-receiving face; a second pressurizing chamber having fluid connection with the first suction port to exert pressure on the second pressure-receiving face; and a third pressurizing chamber having fluid connection with the second suction port to exert pressure on the third pressure-receiving face. 1. A gear pump comprising:a driving gear rotatable about a driving shaft, and first and second driven gears respectively meshing with the driving gear to follow rotation of the driving gear;a housing accommodating the driving gear, the first driven gear and the second driven gear, and defining a flow path including first and second suction ports capable of sucking fluids, a first pressure port employing rotation of the driving gear and the first driven gear to pressurize and discharge the fluid from the first suction port, a second pressure port employing rotation of the driving gear and the second driven gear to pressurize and discharge the fluid from the second suction port;a floating bearing supporting the driving gear so as to allow the driving gear to rotate about the driving shaft and being capable of floating along the driving shaft, and comprising a thrust face bearing a floating force exerted by the fluids along the driving shaft and first, second and third pressure-receiving faces respectively oriented in a direction opposed to the thrust face;a first pressurizing ...

Actuation method and efficiency

A multi-stage centrifugal pump assembly allows for multiple fixed ratio pressure levels. The multiple pressure levels permit optimization of actuation loops without the need for pressure regulators, and can be used directly by the actuators.

Remanufacturing a transmission pump assembly

A transmission pump is be removed from service and remanufactured into a remanufactured transmission pump. A first gear assembly is removed from the pump. A bore of the pump is machined from a first depth to a greater second depth. A second gear assembly is installed in the machined bore. The second gear assembly has a same horizontal geometry and a greater axial depth than the first gear assembly.

VARIABLE SPEED MULTI-STAGE PUMP

A multi-stage gear pump includes a first pump stage, a second pump stage, and a variable speed gearbox including an input and an output, wherein the input is rotationally coupled to the first pump stage and the input rotates at a first rotational speed, and the output is rotationally coupled to the second pump stage and rotates at a second rotational speed, wherein a variable gear ratio determines the second rotational speed relative to the first rotational speed. 1. A multi-stage gear pump , comprising:a first pump stage;a second pump stage; anda variable speed gearbox including an input and an output, wherein the input is rotationally coupled to the first pump stage and the input rotates at a first rotational speed, and the output is rotationally coupled to the second pump stage and rotates at a second rotational speed, wherein a variable gear ratio determines the second rotational speed relative to the first rotational speed.2. The multi-stage gear pump of claim 1 , further comprising a gearbox controller to adjust the variable gear ratio.3. The multi-stage gear pump of claim 2 , further comprising an electronic engine controller to provide at least one operating parameter to the gearbox controller.4. The multi-stage gear pump of claim 3 , wherein the gearbox controlled adjusts the variable gear ratio in response to the at least one operating parameter.5. The multi-stage gear pump of claim 1 , wherein the first pump stage is a main pump stage.6. The multi-stage gear pump of claim 1 , wherein the first pump stage is an actuator pump stage.7. The multi-stage gear pump of claim 1 , wherein the second pump stage is a main pump stage.8. The multi-stage gear pump of claim 1 , wherein the second pump stage is an actuator pump stage.9. The multi-stage gear pump of claim 1 , further comprising a boost stage claim 1 , wherein the boost stage is rotationally coupled to the first pump stage.10. The multi-stage gear pump of claim 1 , further comprising a boost stage claim 1 , ...

GEAR PUMP DEVICE

In the present invention, polishing lines are connected to an outer circumferential high-pressure region, but are not connected to each area that is a low-pressure region. In this configuration, the polishing lines are connected to the outer circumferential high-pressure region where there is high discharge pressure, so high-pressure brake fluid is introduced within the polishing lines . Therefore, a pushback effect is obtained, wherein gear pumps and are pushed back on the basis of the high-pressure brake fluid pressure. Furthermore, the polishing lines are connected to the outer circumferential high-pressure region but are not connected to each area that is a low-pressure region, so high-pressure can be maintained within the polishing lines , and a reduction in the pushback effect can be prevented. Accordingly, a decrease in the loss torque reduction effect can be prevented, and the loss torque can be further reduced. 1. A gear pump device comprising:a gear pump which has an outer rotor having an inner tooth portion and an inner rotor meshed with the outer rotor while forming a plurality of void portions and performs a suction/discharge operation of a fluid by rotating the outer rotor and the inner rotor based on rotation of a shaft inserted into a center hole of the inner rotor;a case that forms a housing portion that houses the gear pump; anda sealing mechanism disposed between the case and one of pump shaft direction end surfaces of the gear pump and, in the gear pump, partitioning a low-pressure side including a suction side sucking a fluid and a periphery of the shaft, and a high-pressure side including a discharge side discharging the fluid and a part of gaps between an outer periphery of the outer rotor and the case,the other end surface of the pump shaft direction end surfaces in the gear pump being brought into contact with a sliding surface of the case based on pressing force of the sealing mechanism to seal a portion between the low-pressure side and ...

Dual Motor Gear Pump

A pump with two independent motors is disclosed. The first motor is mechanically connected to a first rotor comprising a first plurality of teeth radiating from the center of the first rotor. The second motor is mechanically connected to a second rotor comprising a second plurality of teeth radiating from the center of the first rotor, wherein the first plurality meshes with the second plurality. A sealed case may house the first and second rotors, and the case may include a suction inlet and a pressure outlet. Rotating the rotors propels a liquid from the suction inlet to the pressure outlet. Because the motors are independent of each other, when one motor fails to rotate the other motor will rotate both rotors and maintain the propelling liquid from the suction inlet to the pressure outlet. The pump may be a gear pump or a rotary lobe pump. 1. A pump comprising:a first motor mechanically connected to a first rotor comprising a first plurality of teeth radiating from the center of the first rotor;a second motor mechanically connected to a second rotor comprising a second plurality of teeth radiating from the center of the first rotor, wherein the first plurality meshes with the second plurality;a sealed case housing the first and second rotor, the case comprising a suction inlet and a pressure outlet;wherein the rotation of the rotors propels a liquid from the suction inlet to the pressure outlet;wherein the first motor is constructed to be actuated independently of the second motor; andwherein when one motor fails to rotate, the other motor will rotate both rotors and maintain the propelling liquid from the suction inlet to the pressure outlet.2. The pump of further comprising:a first motor controller electrically connected to the first motor;a second motor controller electrically connected to the second motor;wherein the first motor controller is constructed to operate the first motor independently of the second motor.3. The pump of further comprising:a first ...

IDLER GEAR FOR POSITIVE DISPLACEMENT GEAR PUMP

One or more techniques and/or systems are disclosed for a gear pump for low speed transfers of viscous liquid slurries promotes growth of suspended particles, such as sugar crystals, by avoiding crushing of the particles. The pump includes a rotor gear in mesh with an eccentrically mounted idler gear supported on a boss of a pump head that includes a crescent seal extending into an opening resulting from the eccentricity of the idler gear relative to the rotor gear. The idler gear contains a radially extending land on each tooth profile, symmetrically oriented on adjacently spaced pairs of teeth. The lands, configured to minimize crushing of crystals passing through the pump, engage mating rotor teeth for sealing between inlet and outlet ports of the pump. To promote crystal growth, the lands cover only 10% to 30% of profile surface area of each tooth. To minimize gear tooth wear, the lands are axially staggered between successive adjacent pairs of teeth. 1. A positive displacement gear pump comprising:a casing defining a casing interior, the casing comprising an inlet port and an outlet port for transferring a target fluid though the casing interior;an external rotor gear supported within an inboard end of the casing by a rotor shaft, the external rotor gear comprising radially inwardly oriented teeth;a head positioned at an outboard end of the casing; andan internal idler gear rotationally supported on the head about an idler gear axis within the casing interior, the internal idler gear comprising radially outwardly oriented teeth, the internal idler gear being operably disposed on the head in a fixed, radially eccentric, relationship with the external rotor gear, and at least a portion of the internal idler gear teeth operably meshing with at least a portion of the external rotor gear teeth; two radially oriented surfaces respectively extending between a root and a tip of the idler gear tooth;', 'a land comprising a substantially planar surface rising from the ...

Pump Assembly and Method for Producing a Pump Assembly

A pump assembly which comprises at least one housing and two gear wheels as conveying means. The housing comprises at least one base plate and a cover element, which are interconnectable in order to form a pressure chamber. An outer circumferential surface of each of the two gear wheels has a toothing, and said gear wheels intermesh via the toothings in order to convey a fluid. The gear wheels are arranged along an axial direction in the pressure chamber between the base plate and the cover element. The pressure chamber is formed in the housing at least by two bores. The first gear wheel is arranged in a first bore and the second gear wheel is arranged in a second bore. A plurality of centering pins are provided for aligning the bores and the gear wheels with respect to one another, wherein all said centering pins are arranged exclusively in the cover element or exclusively in the base plate. 1. A pump assembly comprisinga housing with at least one base plate and a cover element, which are interconnectable in order to form a pressure chamber; andtwo gear wheels, wherein an outer circumferential surface of the first gear wheel has a first toothing with a first outside diameter and an outer circumferential surface of the second gear wheel has a second toothing with a second outside diameter, wherein the gear wheels intermesh via the toothings in order to convey a fluid; wherein the gear wheels are arranged along an axial direction in the pressure chamber between the base plate and the cover element;wherein the pressure chamber is formed in the housing at least by two bores, wherein the first gear wheel is arranged in a first bore with a first inside diameter and the second gear wheel is arranged in a second bore with a second inside diameter, wherein a plurality of centering pins are provided for aligning the bores and the gear wheels with respect to one another, wherein all said centering pins are aligned with respect to one another exclusively via the cover element ...

Pump Assembly

A pump assembly, which comprises at least one housing and two gear wheels as transfer means as well as a drive shaft. The housing comprises at least one base and one cover element, which can be connected together in order to constitute a pressure chamber. Each of the two gear wheels has a toothing on an outer circumferential surface and mesh with one another via the toothing in order to transfer a fluid. The gear wheels are arranged in an axial direction between the base and the cover element in the pressure chamber. The drive shaft extends into the housing in the axial direction via an opening in the cover element. The first gear wheel is arranged on a first bearing bush, wherein the first bearing bush is mounted only in the base. The first gear wheel is connected to the drive shaft via a formfitting connection in a circumferential direction. 2. The pump assembly as claimed in claim 1 , wherein the drive shaft is arranged in a radial direction with a free clearance with respect to the first gear wheel and the first bearing bush.3. The pump assembly as claimed in claim 1 , wherein the drive shaft is arranged mounted exclusively outside the housing with respect to a force acting in a radial direction.4. The pump assembly as claimed in claim 1 , wherein the formfitting connection is constituted by an inner circumferential surface of the first gear wheel and an outer circumferential surface of the drive shaft.5. The pump assembly as claimed in claim 1 , wherein the drive shaft and the first gear wheel or the drive shaft and the first bearing bush constitute an abutment against displacement in the axial directions.6. The pump assembly as claimed in claim 1 , wherein the first bearing bush is connected to the base via a press fit.7. The pump assembly as claimed in claim 1 , wherein the first bearing bush is connected in an integrally bonded manner to and formed integrally with the base.8. The pump assembly as claimed in claim 1 , wherein at least the base and the cover ...

Planetary Gear Pump

A planetary gear pump comprising a central gear and a plurality of planet pairs provides a space efficient transducer between hydraulic and mechanical energy. When it is configured as a pump, a high flow rate is provided. When it is configured as an actuator, a high torque is provided. A dual-stage configuration may be used as a low speed high torque actuator with high energy efficiency, high pitch velocity, and low slippage.

GEAR PUMP BEARINGS WITH HYBRID PADS

A gear pump includes a drive gear mounted to a first gear shaft, a driven gear meshable with the drive gear, a plurality of journal bearings, and a first porting path. The first porting path is adapted to provide high pressure fluid communication from a discharge of the gear pump to a first hybrid pad location for a first journal bearing selected from the plurality of journal bearings, the first hybrid pad location circumferentially adjacent to a first fluid film location. Each location is disposed annularly between an inner surface of the first journal bearing, and an outer surface of the first gear shaft or second gear shaft corresponding to the first journal bearing. 1. A gear pump comprising:a drive gear mounted to a first gear shaft;a driven gear meshable with the drive gear, the driven gear mounted to a second gear shaft; a drive-side pressure loaded journal bearing disposed about a first longitudinal end of the first gear shaft;', 'a drive-side stationary journal bearing disposed about a second opposing longitudinal end of the first gear shaft;', 'a driven-side pressure loaded journal bearing disposed about a first longitudinal end of the second gear shaft; and', 'a driven-side stationary journal bearing disposed about a second opposing longitudinal end of the second gear shaft; and, 'a plurality of journal bearings including at leasta first porting path adapted to provide high pressure fluid communication from a discharge of the gear pump to a first hybrid pad location for a first journal bearing selected from the plurality of journal bearings, the first hybrid pad location circumferentially adjacent to a first fluid film location, and each location disposed annularly between an inner surface of the first journal bearing, and an outer surface of the first gear shaft or second gear shaft corresponding to the first journal bearing.2. The gear pump of claim 1 , wherein the porting path comprises:a discharge face cut on the first journal bearing for receiving ...

GEAR PUMP AND METHOD FOR REALISING IT

A gear pump comprising:—a pair of gears () able to interact with a fluid crossing the pump ();—a housing seating () of said pair of gears (), said housing seating () comprising a rest plane () of a shim ();—a delivery conduit () which develops from said housing seating () and comprising an inlet mouth (). The inlet mouth () of the delivery conduit () is at a distance from an intersection () between a rest plane () of the shim () and remaining parts of the housing seating (). 23. The pump according to claim 1 , characterised in that said housing compartment () comprises:{'b': 31', '32', '20', '2', '31', '30, 'a first and a second base (, ) which develop transversally to a direction () parallel to the rotation axis of at least one of said gears (); said first base () comprising said rest plane ();'}{'b': 33', '31', '32', '60', '6', '33', '7, 'a lateral surface () interposed between the first and the second base (, ); said inlet mouth () of the delivery conduit () being entirely fashioned in said lateral surface () and the minimum distance from said intersection () being greater than 10 millimetres.'}353231331310311304. The pump according to claim 2 , characterised in that it comprises a cover () which defines said second base () opposite said first base () and which contributes to delimiting the housing seating (); said first base () comprising a recess () having a bottom () defined by said rest plane () of the shim ().4333046. The pump according to claim 2 , characterised in that said lateral surface () and said rest plane () of the shim () have a surface finish that is better than a surface finish of an initial portion of said delivery conduit ().52. The pump according to claim 1 , characterised in that said pair of gears () are a pair of cogwheels which enmesh with one another and interact with the fluid crossing the pump.78. The method according to claim 6 , characterised in that the step of realising the first body () comprises steps of:{'b': 80', '80', '31', '33 ...

HYDRAULIC AUTOMATIC TRANSMISSION BICYCLE

This disclosure generally relates to an automatic bicycle, particularly to a hydraulic automatic transmission bicycle which can automatically and adaptively change gear ratios. More particularly, this disclosure relates to those hydraulic automatic transmission bicycles which use fluid pressure to change such gear ratios, and which include various hydraulic automatic transmissions which may be provided in various configurations and may operate in various methods and sequences to provide automatic and infinitely variable gear ratios. 1. A hydraulic automatic transmission comprising:at least one hydraulic motor;at least one hydraulic pump capable of pressurizing fluid contained therein and capable of discharging said pressurized fluid to said hydraulic motor; andat least one control unit,wherein said hydraulic motor includes a motor driving axis and generates mechanical power for rotating said motor driving axis using said pressurized fluid received form said hydraulic pump, wherein a motor pressure is a pressure of said fluid inside said hydraulic motor, and wherein said hydraulic motor increases or decreases said motor pressure as external mechanical load respectively increases or decreases,wherein said hydraulic pump includes a pump driving axis, defines a pump driving volume, and discharges a pump discharging volume of said pressurized fluid to said hydraulic motor per a rotation of said pump driving axis, while pressurizing said fluid contained in said pump to a pump pressure which is higher than said motor pressure using mechanical energy supplied to said pump, andwherein said hydraulic pump changes said pump discharging volume in response to changes in said mechanical load, whereby a ratio of a first number of rotations of said pump driving axis to a second number of rotation of said motor driving axis automatically changes in response to said mechanical load,wherein said control unit is capable of manipulating said pump driving volume in response to changes in ...

GEROTOR PUMP FOR A VEHICLE

A gerotor pump has a pump housing defining a chamber and having a fluid inlet and a fluid outlet. An outer gear member is supported for rotation within the chamber about a first axis, the outer gear member having a series of internal teeth. An inner gear member or inner rotor is rotatably supported within the outer gear member about a second axis spaced apart from the first axis. The inner gear member defining a series of external teeth interposed with a series of external pockets. The inner gear member defines a fluid passage therethrough to fluidly connect two nonadjacent pockets, with another pocket independent of fluid passages. The fluid passage is configured to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise. 1. A gerotor pump comprising:a pump housing defining a chamber and having a fluid inlet and a fluid outlet;an outer gear member supported for rotation within the chamber about a first axis, the outer gear member having a series of internal teeth; andan inner gear member rotatably supported within the outer gear member about a second axis spaced apart from the first axis, the inner gear member defining a series of external teeth interposed with a series of external pockets, the inner gear member defining a fluid passage therethrough to fluidly connect two nonadjacent pockets, another pocket independent of fluid passages, the fluid passage being configured to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise.2. The pump of wherein the another pocket is positioned between and separates the two nonadjacent pockets.3. The pump of wherein the inner gear member and the outer gear member cooperate to form a plurality of variable volume pumping chambers to pump fluid from the fluid inlet to the fluid outlet.4. The pump of wherein the fluid passage is defined by a groove in an end face of the inner gear member.5. The pump of wherein the fluid passage is further defined by a second ...

POSITIVE DISPLACEMENT PUMP SHAFT BEARING ASSEMBLY

The application relates to a positive displacement pump shaft bearing assembly that comprises a shaft having a shaft lodging and a shaft rotational axis. The assembly further comprises a housing having a housing lodging and one rolling element that is located between said lodgings. The rolling element comprises a rolling element centre point that coincides with the shaft rotational axis. 110202510030354025354090100. A positive displacement pump shaft bearing assembly () , comprising a shaft () having a shaft lodging () and a shaft rotational axis () , a housing () having a housing lodging () and one rolling element () located between said lodgings ( , ) , wherein the rolling element () comprises a rolling element center point () that coincides with the shaft rotational axis ().2102535505152. The shaft bearing assembly () according to claim 1 , wherein at least one of the shaft lodging () or the housing lodging () has one lodging form selected among: a conical-shape () claim 1 , a sphere-shape () claim 1 , or a sphere-recessed-shape ().310402535. The shaft bearing assembly () according to claim 1 , wherein the rolling element () has point or line contact with the shaft lodging () or the housing lodging ().4102535100. The shaft bearing assembly () according to claim 1 , wherein the shaft lodging () and/or the housing lodging () is adjustable in position parallel to the shaft rotational axis ().51025352530. The shaft bearing assembly () according to claim 1 , wherein the shaft lodging () and/or the housing lodging () is threadedly connected with the shaft () or the housing ().610602535406025352030. The shaft bearing assembly () according to claim 1 , wherein at least one distance element () is located between the shaft lodging () or the housing lodging () and the rolling element () claim 1 , or at least one distance element () is located between the shaft lodging () and/or the housing lodging () and the shaft () and/or the housing ().710702535. The shaft bearing ...

ROTARY PUMP OR MOTOR WITH ORBITAL PISTON ASPIRATION, METHODS OF PRODUCTION AND USES THEREOF

Rotary components are described that include a housing comprising a rotor having a rotor working face and a gate having a gate working face and a pocket; at least one vane, wherein the vane is coupled to the rotor; at least one wiper coupled to the vane; a plurality of endplates coupled to the housing, wherein at least one of the endplates is a float plate; an intake chamber; and an outlet chamber. In addition, methods of aspirating a working medium by utilizing the rotary component having at least one float plate includes pulling the working medium into the intake chamber, depositing the working medium into a working chamber that is located between the intake chamber and the outlet chamber; maintaining the working medium in a stationary position until the vane sweeps around toward the outlet chamber; accumulating the working medium into the outlet channel of the outlet chamber; and centrifugally ejecting the working medium into the outlet chamber and out of the system. 123-. (canceled)24. A method of aspirating a working medium by utilizing a rotary component , the method comprising: a housing comprising a rotor having a rotor working face and a gate having a gate working face and a pocket;', 'at least one vane, wherein the vane is coupled to the rotor;', 'at least one wiper coupled to the vane;', 'a plurality of endplates coupled to the housing, wherein at least one of the endplates is a float plate;', 'an intake chamber; and', 'an outlet chamber;, 'providing a rotary component comprisingpulling the working medium into the intake chamber, depositing the working medium into a working chamber that is located between the intake chamber and the outlet chamber;maintaining the working medium in a stationary position until the vane sweeps around toward the outlet chamber;accumulating the working medium into the outlet channel of the outlet chamber; andcentrifugally ejecting the working medium into the outlet chamber and out of the system.25. The method of claim 24 , ...

COMPOSITE ROTARY COMPONENT

The present teachings generally include a rotor assembly having a plurality of rotor sheets or layers mounted to a shaft, and methods of construction for a rotor assembly. Each rotor sheet or layer in the assembly may be provided with a central opening extending between the first and second sides through which the shaft extends. In one aspect, the rotor sheets or layers can be provided with a plurality of lobes extending away from the central opening, wherein each of the lobes can have a lobe opening extending through the thickness of the sheets or layers. In one example, the rotor sheets or layers can be rotationally stacked to form a helical rotor. In one example, the rotor sheets are formed from a pre-cured composite material and are bonded together with an adhesive. 1. A rotor assembly comprising: i. a first side and a second opposite side separated by a first thickness;', 'ii. a central opening extending between the first and second sides;', 'iii. a plurality of lobes extending away from the central opening, each of the lobes having a longitudinal axis intersecting the center of the central opening;, 'a. a plurality of rotor sheets, each rotor sheet includingb. at least one rotor sheet being formed from a fiber reinforced composite material; andc. a shaft extending through the central opening of each of the plurality of rotor sheets;d. wherein the plurality of rotor sheets is stacked and secured together to form the rotor assembly such that at least one of the first and second sides of one rotor sheet is adjacent to and in contact with at least one of the first and second sides of another rotor sheet.2. The rotor assembly of claim 1 , wherein the fiber reinforced composite material of the at least one rotor sheet includes a fiber substrate and a plastic resin.3. The rotor assembly of claim 2 , wherein the fiber substrate of the at least one rotor sheet is a carbon fiber substrate.4. The rotor assembly of claim 3 , wherein the carbon fiber substrate of the at ...

Internal Gear Pump

An internal gear pump with a field replaceable idler is disclosed that may be used for sanitary applications. Access to the idler mainly requires removal of the head. Access to the seal assembly disposed at the inboard end of the pump chamber is also fast and easy as removal of the head exposes a fastener that secures the rotor to the drive shaft. Removal of this fastener enables the rotor to be removed with a standard rotor pulling tool thereby exposing the pump chamber seal assembly which may be cleaned, serviced or replaced as needed. 1. A pump comprising:a bracket including an inboard end, an outboard end and a through hole extending between the inboard and outboard ends;the outboard end of the bracket being coupled to an inboard end of a case, the inboard end of the case including an opening, the case further including an open outboard end that is covered by and coupled to a head, the case and head defining a pump chamber, the inboard end of the case further including an annular recess that surrounds the opening and that receives a seal assembly;a shaft including an inboard end and an outboard end, the shaft passing through the through hole of the bracket, the outboard end of the shaft passing through the seal assembly and the inboard end of the case before being detachably coupled to a rotor, the rotor being received in the pump chamber;the head being sealably and detachably coupled to a dowel, the dowel being coaxially received in and coupled to an idler that is disposed in the pump chamber;whereby removal of the head and rotor providing access to the seal assembly through the open outboard end of the case and removal of the head providing access to the idler.2. The pump of wherein the dowel includes an inboard end disposed axially within the idler and an outboard end that is coupled to the head with a fastener claim 1 ,the pump further comprising a seal disposed between the dowel and the head that isolates the fastener from the pump chamber.3. The pump of ...

Pump

Pump ( 1 ) comprising:—means ( 2 ) for pumping a working fluid;—an electric motor ( 3 ) for actuating the pumping means ( 2 ); said motor ( 3 ) comprising a stator ( 31 ) and a rotor ( 32 ) that interact for the actuation of the pumping means ( 2 ); said rotor ( 32 ) being rotatable about an axis of rotation ( 320 );—an electronic unit ( 4 ) for controlling the electric motor ( 3 );—a conduit ( 5 ) for the delivery of the working fluid downstream of the pumping means ( 2 );—a line ( 6 ) for cooling the electric motor ( 3 ) and the electronic unit ( 4 ), said cooling line ( 6 ) being permanently open and drawing off some of the working fluid processed by the pumping means ( 2 ). The cooling line ( 6 ) comprises a first conduit ( 61 ) which is developed from a delivery area ( 22 ) of the pumping means ( 2 ).

Fluid Pump With Shim And Related Methods Of Manufacture

A fluid pump includes a gear housing with a pocket wall and a base. The pocket wall and the base define a pocket that projects into the gear housing from a pocket surface. The fluid pump also includes a first gear rotatably positioned in the pocket. The first gear is spaced from the pocket surface by a first gap. The fluid pump also includes a second gear rotatably positioned in the pocket that engages the first gear. The second gear is spaced from the pocket surface by a second gap. The fluid pump also includes a selected shim that is selected from a plurality of shims in a shim set. The selected shim has a thickness that results in a desired clearance between the selected shim and the first face or the second face. 1. A fluid pump comprising:a gear housing including a pocket wall and a base, the pocket wall and the base defining a pocket that projects into the gear housing from a pocket surface;a first gear rotatably positioned in the pocket, the first gear including a first face that is spaced from the pocket surface by a first gap;a second gear rotatably positioned in the pocket and engaging the first gear, the second gear including a second face that is spaced from the pocket surface by a second gap; anda selected shim positioned in the pocket over the first gear and the second gear, wherein the selected shim is selected from a plurality of shims in a shim set by comparing thicknesses of the shims in the plurality of shims to the first gap or the second gap, the selected shim having a thickness that results in a desired clearance between the selected shim and the first face or the second face.2. The fluid pump of wherein the desired clearance is a minimum clearance.3. The fluid plump of wherein the pocket wall includes two rounded portions to define a pocket with a first circular depression and a second circular depression claim 1 , the first circular depression configured to receive the first gear and the second circular depression configured to receive the ...

Curvilinear circular-arc tooth gears for use in external gear pumps

A curvilinear circular-arc-toothed (CCAT) gear for improving gear performance and reducing noise while avoiding axial loads common to helical gears includes an annular gear body; and a gear tooth having a hybrid gear tooth profile comprising one or more curves configured to provide a sweep of the gear tooth space by a mating gear tooth while maintaining smooth contact during gear mesh, and wherein the gear tooth extends along an axial length of the gear body along an axial profile. 1. A curvilinear circular-arc-toothed (CCAT) gear for improving gear performance and reducing noise while avoiding axial loads common to helical gears , the CCAT gear comprising:an annular gear body; anda set of gear teeth, with each tooth extending radially away from the gear body and extending axially along the gear body, andwherein the gear tooth has a cross-sectional profile transverse to the rotational axis of the gear body, the cross-sectional profile formed from a hybridization of two or more curves, the two or more curves defining a tooth tip, a tooth flank, and a tooth root, andwherein the gear tooth has an axial tooth profile defining a circumferential positioning of the gear tooth on the gear body relative to a respective axial positioning of the gear tooth on the gear body, the axial tooth profile being generally symmetric across the midplane of the gear to reduce axial loading on gears induced by gear meshing.2. The CCAT gear of claim 1 , wherein the axial tooth profile is continuously differentiable.3. The CCAT gear of claim 1 , wherein the axial tooth profile is fully symmetric about an axial mid-plane of the gear to eliminate axial loading from gear meshing.4. The CCAT gear of claim 1 , wherein the axial tooth profile has an initial helix angle at each end of the gear.5. The CCAT gear of claim 1 , wherein the axial tooth profile is curvilinear.6. The CCAT gear of claim 5 , wherein the axial tooth profile is a half-period sinusoid function.7. The CCAT gear of claim 1 , ...

VARIABLE FLOW ENGINE OIL PUMP

A variable flow engine oil pump has a first seat, a second seat attached to the first seat, and a regulating valve assembly and a pressurizing assembly mounted in the second seat. An eccentric wheel of the pressurizing assembly meshes with a plug of the regulating valve assembly. With the plug driving the eccentric wheel to rotate by an angle, a volume flow rate of engine oil output by the engine oil pump can be adjusted. Elements used for adjusting the output of the engine oil are reduced, and manufacturing cost and assembling complexity of the engine oil pump are lowered accordingly. Moreover, since the regulating valve assembly drives the pressurizing assembly directly, the regulating valve assembly can drive the pressurizing assembly efficiently. 1. A variable flow engine oil pump comprising: a first axial hole formed through the first seat; and', 'an oil return channel formed in an inner surface of the first seat;, 'a first seat having'} a second axial hole formed through the second seat and aligning with the first axial hole;', 'an oil inlet formed through the second seat;', 'an oil outlet formed through the second seat;', 'an oil regulating chamber formed in the second seat, being elongated, and having an inner end;', 'a guiding channel formed in the second seat and communicating with the inner end of the oil regulating chamber; and', 'an oil return hole formed in an inner surface of the second seat, communicating with the oil regulating chamber, and corresponding in position to and communicating with the oil return channel;, 'a second seat attached to the first seat and having'}an oil inlet chamber formed in the first seat and the second seat;an oil outlet chamber formed in the first seat and the second seat and communicating with the guiding channel; [ an open end;', 'a closed end facing and selectively sealing the guiding channel;', 'a receiving recess formed in the open end of the plug; and', 'a driving toothed portion formed on an outer surface of the ...