ВИНТОВОЙ КОМПРЕССОР

Изобретение относится к винтовому компрессору. Винтовой компрессор (1) содержит камеру (2) сжатия, образованную корпусом (3), в которой установлены два входящих в зацепление ротора (4, 5), и приводной двигатель (14), снабженный камерой (16) двигателя, образованной корпусом (15), в которой установлен вал (17). Вал (17) приводит в движение по меньшей мере один из двух роторов (4, 5). Корпуса (3) и (15) присоединены непосредственно друг к другу для образования корпуса (28) компрессора. Камеры (16) и (2) не изолированы друг от друга. Валы (7, 8) роторов (4, 5) и вал (17) проходят вдоль направлений (ΑΑ', ΒΒ', СС'), расположенных под углом или перпендикулярно к горизонтальной плоскости. Корпус (3) имеет основание (29) или нижнюю секцию корпуса (28). Корпус (15) образует головную часть (30) или верхнюю секцию корпуса (28). Камера (2) снабжена впускным отверстием (9), расположенным вблизи конца (12) роторов (4, 5), являющихся ближайшими к головной части (30) корпуса (28), а также выходным отверстием ...

ВИНТОВОЙ НАСОС

Изобретение относится к винтовому насосу. Винтовой насос содержит корпус (2), который окружает нагнетательную камеру (5), приводной винт (7) и противоположно вращающийся ведомый винт (8), корпусную вставку (6), расположенную в корпусе (2), в которой установлены винты (7, 8), по меньшей мере, один присоединенный к вставке (6) опорный элемент (13', 13ʺ), на котором расположены опоры (12) винтов (7, 8), и по меньшей мере одну закрывающую корпусное отверстие корпусную крышку. Элемент (13', 13ʺ) с вставкой (6) и винтами (7, 8) образует модуль (15), который после удаления корпусной крышки через корпусное отверстие выполнен с возможностью извлечения из корпуса (2). Винтовой насос имеет, по меньшей мере, одну съемную направляющую рельсовую систему, которая имеет, по меньшей мере, один проходящий в продольном направлении винтового насоса направляющий рельс, на котором модуль (15) направляется в корпусе (2) в аксиальном направлении. Изобретение направлено на обеспечение простых и экономичных работ ...

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 ...

ВИНТОВОЙ НАСОС

Drallregler für Kreiselpumpen.

ABGEDICHTETE EXZENTERGETRIEBENE WELLE FÜR EINE VERDRÄNGERPUMPE

ZAHNRADMASCHINE (PUMPE ODER MOTOR)

Zahnraederpumpe, bei welcher die Antriebsscheibe zwecks Entlastung der Antriebswelleauf dem Gehaeusekoerper gelagert ist

Flügelzellenpumpe

Flügelzellenpumpe, umfassend:einen um eine Drehachse (D) drehbaren Rotor (1) und mehrere von dem Rotor (1) verschiebbar geführte Flügel (2), wobei der Rotor (1) je Flügel (2) eine Unterflügelkammer (3) aufweist undjeder Flügel (2) eine verschiebbare Wand seiner ihm zugeordneten Unterflügelkammer (3) bildet,eine auf einer ersten Seite des Rotors (1) an den Rotor (1) stirnseitig angrenzende erste Stirnwand (30), welche zur Drucksteuerung der Unterflügelkammer (3) eine sich in Umfangsrichtung erstreckende Unterflügelausnehmung (34; 37) aufweist, die in Umfangsrichtung betrachtet eine Steuerkante (341; 342; 371; 372) umfasst,eine auf einer zweiten Seite des Rotors (1) an den Rotor (1) stirnseitig angrenzende zweite Stirnwand (20), welche zur Drucksteuerung der Unterflügelkammer (3) eine sich in Umfangsrichtung erstreckende Unterflügelausnehmung (24; 27) aufweist, die der Unterflügelausnehmung (34; 37) der ersten Stirnwand (30) gegenüberliegt und in Umfangsrichtung betrachtet eine Steuerkante ...

Pumpe mit veraenderlicher Foerdermenge

Metered lubricating system for rotary pumps

... 522,471. Rotary engines. FULCHER, F. C. Oct. 12, 1938, No. 29555. Drawings to Specification. [Class 110 (ii)] Rotary pumps and motors as described in Specifications 522,470, 522,472, [Group XXIV], 522,473, and 529,503 are lubricated by oil the flow of which is controlled by adjustable valves or interchangeable jets. Oil is delivered through a bore in the casing to an annular groove in the end of the rotor periphery which rotates within the neck of the casing and thence by oil passages to the bearing surfaces. Oil escapes along the periphery of the rotor, which does not contact with the casing neck, in the form of a mist and lubricates the parts to which there are no oil passages.

Vaned-cell pump or toothed-wheel pump with an internal axle

Improvements in revolving cylinder fuel delivery pumps

... 493,577. Revolving-cylinder pumps. BOSCH AKT.-GES., R. Aug. 10, 1937, No. 21960. Convention date, Aug. 10, 1936. [Class 102 (i)] A revolving-cylinder pump comprises a rotor 4 having a radial piston 6 engaging an eccentric freely rotatable ring 12 and a pin 13 also engaging the piston 6 and the ring 12 and passing through the cylinder head. The rotor 4 is pressed against the valve face 3 by a spring 7 and passages 5<1>, 14 connect the cylinder 5 and the space between the rotor 4 and the casing 1 alternately to suction and delivery. In Fig. 4, the rotor 4 has two pistons 6<1>, 6<11> both engaging the freely rotatable ring 12 and a rod 13 passing through the partition 4<1> engages both pistons. The delivery pressure is connected to the inside of the casing and a pressure relief valve 18 is provided. Alternatively the suction is connected to the inside of the casing and a increase in the delivery pressure raises the rotor 4 from the valve face 3.

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.

IMPELLER PUMP

A ROTATING AND PUMPING UNIT OPERABLE BOTH FOR SUPPORTING A ROTATING MEMBER AND FOR FEEDING A LIQUID

ROTARY POSITIVE-DISPLACEMENT PUMPS

... 1424077 Rotary positive-displacement devices TRW Inc 3 July 1973 [7 July 1972] 31732/73 Heading F1F In a pump which may be of the slipper-vane type and as particularly described is substantially identical with that described in Specification 1061088 deflection of the pressure plate 30 into contact with the rotor 24 is obviated by a gap between this plate and the separator plate 32. The gap may be due to a recessed portion 85 between lands 87, 88 circumjacent outlet ports 74.

Compressor Module

Asymmetric lobes for motors and pumps

Bush retention system

SCREW PUMP

ROTATION POSITIVE-DISPLACEMENT PUMP WITH LIMITED RADIAL SPACE REQUIREMENT

HYDRAULISCHES KOMBIAGGREGAT

SCREW PUMP

Rotary pump

STEERING METERING PUMP FOR PROMOTING LIQUIDS

SLIPPER-VANE PUMP

Method and apparatus for lubricating a screw pump system

A pump system includes inlet chambers, an outlet chamber, and rotors disposed inside the inlet chambers and the outlet chamber to pump a process fluid from the inlet chambers to the outlet chamber and to direct the process fluid to a separator. A gear chamber is configured to receive a portion of the process fluid from the separator. First and second sets of pump bearings are coupled to the rotors and lubricated by the portion of the process fluid flowing from the gear chamber. A conduit is configured to direct the portion of the process fluid from the pump bearings back to the gear chamber. Some of the portion of the process fluid lubricating the pump bearings is permitted to leak to the inlet chambers. Additional process fluid is continually added to the portion of the process fluid to compensate for fluid leaking to the inlet chambers.

FUEL PUMP ASSEMBLY

STACK-UP PUMP ASSEMBLY

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.

MOTOR-DRIVEN HYDRAULIC PUMP AND DRIVING COUPLER USED IN THE SAME

A motor-driven hydraulic pump for use in motor vehicles and a driving coupler used therein, in which the pump includes a driving gear and a follower gear, an intake chamber and an outlet chamber formed on opposite sides of the meshed gears, a housing for enclosing the intake chamber and the outlet chamber, the housing being supported by a first support on one side and a second support on the other side, and a noise damper including a space inside for reducing noise occurring the delivery of a working oil, the noise damper communicating with the outlet chamber and being fixed to the second support of the housing, and wherein the driving coupler includes a protruding, undulated sleeve including a mortise mating with a tenon formed on the end of either the driving shaft or the driven shaft, and a sleeve counterpart including a mortise mating with a tenon formed on the end of the other shaft, and a protruding, splined projection which includes splines shaped to fit into the undulated sleeve ...

Pompe rotative réversible.

Pompe rotative réversible.

Drehschieberpumpe.

Procédé pour rendre régulier le débit de pompes à engrenage.

Zahnradspinnpumpe.

Hydrostatische Drehkolbenmaschine

Compasso a tre aste

Betriebsverfahren für Vakuumpumpenkombination

Flüssigkeitspumpe, insbesondere Heizölpumpe

Rotationspumpe

Machine hydraulique à engrenage

Flüssigkeitspumpaggregat, insbesondere für Heizöl

Pompe rotative

Topfförmiges Filterelement für Flüssigkeitspumpen, insbesondere Heizölpumpen

Drehkolbenpumpe

flüssigkeitspumpe, insbesondere Heizölpumpe

Flüssigkeitspumpe, insbesondere Heizölpumpe

Pumpvorrichtung

Rotary pump with differential pistons

The rotary pump with differential pistons comprises a duct (1) whose internal shape is a loop, this duct being provided with an inlet (2) and an outlet (3) which delimit the two branches (4, 5) composing the loop. These two branches (4, 5) have different volumes. Two liquid pistons (6) formed from a liquid containing small particles of a magnetic material are magnetically driven from the outside and move successively in the two branches (4, 5). The pumping effect comes from the difference in the volume of the branches. The flow rate is very substantially proportional to the angle of rotation of the motor. This type of pump allows precise metering and permits very low flow rates. ...

GEAR PUMP.

Vane pump

Twin-screw pump operated at variable speed and used for pressurizing transportation

Oil pump

Test rig for running-in hydraulic gear pumps - has torque, pressure and flow controlled within preset range of values

DEVICE AND REVERSIBLE PUMP OF LUBRICATION, IN PARTICULAR AS A VEHICLE HAVE TWO DRIVING AXLES

Air pump with rotating impeller with sealing by oil

Process and device for the hydrostatic compensation of rotary hydraulic transformers of energy

Annular rotor, with segments and pallets mobile, for rotary pumps, compressing, etc

Rotary pump for liquids

Rotary pump

TURNING DEVICE OF PUMPING ABLE TO SUPPORT AN ELEMENT TURNING WHILE OUTPUTTING A LIQUID HAVING LUBRICATING PROPERTIES

Test rig for running-in hydraulic gear pumps - has torque, pressure and flow controlled within preset range of values

PUMP HAS HIGH PRESSURE

PUMP DIRECTION ASSISTEE OF THE TYPE HAS PALLETS

POWER PACK, IN PARTICULAR FOR DEVICE Of ASSISTANCE OF DIRECTION Of a MOTOR VEHICLE

Gear pump for artificial silk ropemaking machines

Rotary volumetric machine

SCREW APPARATUS TO TRANSFER FLUID

The present invention relates to a screw apparatus to transfer, and more specifically, relates to a screw apparatus to transfer a fluid such as oil. According to the present invention, the screw apparatus comprises: a screw (100) to transfer a fluid by a rotating motion; and a stator (200) inserted into the screw (100). As the screw (100) rotates by a motor, a fluid is transferred through a space between the screw (100) and the stator (200) to be discharged through a discharge hole (240). The stator (200) comprises: an external housing (210); and an internal rubber layer (220) installed on an internal side of the external housing (210). The internal rubber layer (220) has an internal profile corresponding to a shape of the screw (100) in case of a rotation, being made of ethylene propylene diene monomer (EPDM) rubber. The present invention is to provide a high abrasion resistance, durability, and slip performance while providing a more economical coating technology instead of expensive ...

bomba de massa fundida para criação de pressão para compressão de massa fundida de plástico por uma ferramenta

MONTAGEM DE BOMBA E MOTOR

KOMPLETT ROTORBRENSLEPUMP

Vane cell pump having resilient sealing means biasing the pressure plate

A vane cell pump comprises a housing having a small bore at one end extending to a large bore at the other end. A drive shaft for a pump package, i.e., a rotor, vanes and cam ring in said large bore. The other end of the housing is closed by a pressure plate against which one radial face of the pump package rotates, and which pressure plate is bolted to the housing. Another pressure plate within the large bore is pressed against the opposite radial face of the pump package by being exposed to an outlet pressure chamber of the pump. The area of the outlet pressure chamber to which the latter pressure plate is exposed is demarcated by axial sealing elements surrounding the drive shaft and exerting a compression force between a housing wall and the latter pressure plate. The construction effects a tight tolerance between relatively moving parts at all times including the start of pump operation.

COMBINED MOTOR AND ROTARY FLUID DEVICE

A combined motor and rotary fluid device including a fluid unit having a housing and a rotor within said housing, motor means, and a mounting structure for mounting said fluid unit relative to said motor means including a plurality of posts extending outwardly from said motor for supporting rings clamping a resilient diaphragm therebetween on which said fluid unit housing is mounted, and a shaft extending outwardly from said motor for mounting the rotor of said fluid unit, said resilient diaphragm permitting a floating movement of said housing.

Vane type pump

Gear metering pump for compounded elastomeric material

Vane pump device

An embodiment provides a vane pump device includes multiple vanes; a rotor that rotates and includes vane grooves for supporting the vanes and accommodating oil; a cam ring that includes an inner circumferential cam ring surface provided with a high pressure region and a low pressure region, and that surrounds the rotor; and an inner plate that covers an opening of the cam ring. The inner plate includes a first portion that supplies high pressure oil to the vane grooves, and a second portion that supplies low pressure oil to the vane grooves. Among vane grooves which support vanes positioned in the high pressure region of the cam ring, the first portion supplies high pressure oil to vane grooves, the number of which is less than the number of vanes positioned in the high pressure region.

SCREW PUMP

A screw pump includes a male screw, a female screw, a motor, a journal, a bearing member, and a case. The motor includes an output shaft, which transmits a torque to the male screw, and the motor is operable to drive the male screw to rotate the same through the output shaft. The journal is rotatably placed between the output shaft of the motor and the male screw. The bearing member rotatably supports the journal. The case includes a screw receiving hole that receives the male screw and the female screw. The journal and the male screw are coaxially and non-detachably integrated together. The output shaft and the journal are fitted together by clearance fit that enables transmission of the torque between the output shaft and the journal. 1. A screw pump that pumps fluid from a suction inlet at a low pressure side to a discharge outlet at a high pressure side when a driving-side screw , which is one of a male screw or a female screw , and at least one driven-side screw , which is another one of the male screw or the female screw , are rotated while the driving-side screw and the at least one driven-side screw are meshed with each other , the screw pump comprising:the driving-side screw;the at least one driven-side screw;a drive device that includes an output shaft that transmits a torque to the driving-side screw, wherein the drive device is operable to rotate the driving-side screw through the output shaft;a journal portion that is rotatably placed between the output shaft of the drive device and the driving-side screw;a bearing portion that rotatably supports the journal portion; anda case that includes a screw receiving hole, which receives the driving-side screw and the at least one driven-side screw, wherein:the journal portion and the driving-side screw are coaxially and non-detachably integrated together; andthe output shaft and the journal portion are fitted together by clearance fit that enables transmission of the torque between the output shaft and the ...

Mud motor stators and pumps and method of making

A mud motor stator or a pump comprising of a tubular outer portion; a number of lobes extending radially inwardly from the tubular outer portion, at least one of which comprises a skeletal structure and method for producing a mud motor stator or a pump comprising of placing material and bonding the material together in a pattern dictated by the design shape of the stator or pump.

Hydraulic pump operating device and method for use in hydraulic system

The rotational frequency of a variable speed motor is set to a normal rotational frequency setting value (N1). A pressure variation range (P) is detected based on a pressure detection value P, of a variable displacement pump, detected by a pressure detector. It is determined whether a determination that the detected pressure variation range (P) is less than or equal to a pressure maintained state detection level (L1) has been continuously given for a period indicated by a timer setting value (T1). If the determination that the detected pressure variation range (P) is less than or equal to the pressure maintained state detection level (L1) has been continuously given for the predetermined period, then it is detected that the current state is a pressure maintained state, and the rotational frequency of the variable speed motor is switched from the normal rotational frequency setting value N1 to a pressure maintaining rotational frequency setting value (N2( Подробнее

VANE PUMP DEVICE AND HYDRAULIC APPARATUS

Disclosed is a vane pump device including: an even number of vanes; a rotor; a cam ring; an inner plate; and an outer plate. An inner-plate high pressure side through-hole and an inner-plate low pressure side recess portion are formed separately from each other in a rotation direction in cam ring side end surfaces of the inner plate and the outer plate, and communicate with a columnar groove which is a space of a vane groove on a rotation center side. The position of an inner-plate high pressure side through-hole upstream end and the position of an inner-plate low pressure side recess portion upstream end are point-symmetrical with each other with respect to the rotation center.

End Plates and Inner Plate Bushings for Pumps

A cast for producing end plates for a pump assembly, the cast comprising a base portion and a pair of projections, the pair of projections providing material to machine bearing assembly housings for accommodating drive and idler shafts in the pump assembly. Also provided is an inner plate bushing for an end plate in a pump assembly, the inner plate bushing comprising a collar extending from a flange, the collar to be inserted into a mounting recess in the end plate with the flange seating flush with a surface of the end plate, the surface area of an end of the collar being larger than an inner surface of the flange.

INTEGRATED DISPLACEMENT CONTROLLED PUMP

A pump system includes a motor, a pump, and a single shaft extending from the motor into the pump, the single shaft being configured to operate simultaneously as both a motor output shaft and a pump input shaft. A first end of the single shaft interacts with the motor, and a second end of the single shaft interacts with the pump, to configure the shaft to operate as the motor output shaft and the pump input shaft. The pump system further may include a mounting accessory configured to support the motor and the pump. The motor may be an electric motor, and the pump may be a hydraulic pump. A drive controller is configured to generate commands for controlling the electric motor, which in turn drives the pump to achieve a desired flow of hydraulic fluid.

РОТАЦИОННО-ПОРШНЕВАЯ МАШИНА, РУЛЕВОЙ ПРИВОД КОЛЕСА И ПРИВОД ВРАЩЕНИЯ КОЛЕСА С РОТАЦИОННО-ПОРШНЕВОЙ МАШИНОЙ

Изобретение относится к ротационно-поршневой машине. Ротационно-поршневая машина по меньшей мере с одним кольцевым каналом 1, изогнутым по по меньшей мере частичной дуге окружности, в котором подвижно расположен поршень 2 в сообщающей движение текучей среде, входящей через присоединение 3 или 4 для текучей среды и выходящей через другое присоединение 4 или 3 для текучей среды. Поршень 2 посредством рычага 5 соединен с расположенным своей осью вращения коаксиально, концентрически относительно дуги окружности вращательным элементом. Рычаг 5 проведен через выполненный в стенке канала 1 в направлении движения поршня 2 уплотненный зазор к вращательному элементу. В области зазора между рычагом 5 и соседними с обеих сторон участками стенки введены уплотнительные средства для предотвращения выхода текучей среды. Рычаг 5, с одной стороны, и соседние с обеих сторон с зазором участки стенки канала 1, с другой стороны, снабжены входящими в зацепление комплементарными удерживающими структурами, удерживающее ...

ШЕСТЕРЕНЧАТЫЙ НАСОС И ГИДРАВЛИЧЕСКИЙ ШЕСТЕРЕНЧАТЫЙ МОТОР

Группа изобретений относится к шестеренчатым насосам и к гидравлическим шестеренчатым моторам. Шестеренчатый насос (100) содержит ведущее зубчатое колесо (1), ведомое зубчатое колесо (2), передний фланец (6), от которого выступает вперед выступающий участок (13) вала, связанный с валом (10) колеса (1), заднюю крышку (7), прикрепленную к корпусу (3), и промежуточный фланец (8), расположенный между корпусом (3) и фланцем (6). Фланец (8) содержит первую камеру (80) и вторую камеру (81), соединенную посредством соединительного канала (82) с каналом впуска или выпуска текучей среды, компенсационное кольцо (9), установленное в камере (80) и введенное на участке вала (10) колеса (1) таким образом, чтобы компенсировать осевые усилия колеса (1) и передавать движение на вал (10) колеса (1), и поршень (88), установленный в камере (81) для остановки напротив одного конца вала (20) колеса (2) таким образом, чтобы компенсировать осевые усилия, приложенные к колесу (2). Группа изобретений направлена на ...

СПОСОБ ЭКСПЛУАТАЦИИ ШЕСТЕРЕННОГО НАСОСА И ШЕСТЕРЕННЫЙ НАСОС

Группа изобретений относится к способу эксплуатации шестеренного насоса и шестеренному насосу. Способ заключается в том, что посредством зубчатых колес (11) нагнетаемую жидкость, выходящую из по меньшей мере одного впуска корпуса (3), нагнетают в направлении по меньшей мере одного выпуска корпуса (3). Колеса (11) посредством установочного устройства (21) в зависимости от условий давления внутри корпуса (3), включающих в себя по меньшей мере противодавление жидкости на выпуске, поворачивают относительно друг друга и/или смещают относительно друг друга. Если противодавление жидкости на выпуске является меньше по меньшей мере одного заданного минимального значения, колеса (11) смещают посредством устройства (21) в исходное положение. После этого, если противодавление жидкости на выпуске не является ниже указанного по меньшей мере одного минимального значения, расположенные в исходном положении колеса (11) посредством устройства (21) поворачивают относительно друг друга и/или смещают относительно ...

ЭКСЦЕНТРИКОВЫЙ ШНЕКОВЫЙ НАСОС СО ВСТРОЕННЫМ ПРИВОДОМ

... 1. Эксцентриковый шнековый насос, имеющий статор (2) и вращающийся в нем ротор (1), а также приводной двигатель для приведения ротора во вращение, который соединен с ротором (1) насоса и имеет статорную обмотку (4) и ротор (3, 3а) практически цилиндрической формы, вращающийся по эксцентрической траектории внутри практически цилиндрического корпуса (5), на котором расположена статорная обмотка (4), причем ротор двигателя и ротор насоса жестко соединены друг с другом. 2. Эксцентриковый шнековый насос по п.1, отличающийся тем, что на конце ротора (1) насоса, противоположном его концу с расположенным на нем первым ротором двигателя, расположен второй ротор (3а) двигателя, выполненный практически цилиндрической формы и вращающийся по эксцентрической траектории внутри практически цилиндрического корпуса (5а), на котором расположена вторая статорная обмотка (4а). 3. Эксцентриковый шнековый насос по п.1, отличающийся тем, что он содержит несколько роторов (1) насоса со следующим за каждым из них ...

Drehkolbenpumpe mit in der Kolbentrommel radial unter Federwirkung verschiebbaren Kolben

VANE PUMP, ESPECIALLY FOR POWER STEERING

Foundation frame for drive assemblies - has side parts also forming parallel fixing strips which have grooves for supporting displaceable nuts.

The two spaced parallel fixing strips (1,2) which support the detachable assembly are formed by the side parts (3,4) of the foundation frame. They each have on their bearing faces (5,6) longitudinally aligned T-grooves (6,8) in which T-groove nuts (9) are longitudinally displaceable. The side parts (3,4) are connected together by spacers (10,14) and can be formed as cast parts with the integral full-length grooves. The side parts can have a C-shaped cross-section. A movable oil tank (18) can be fitted between the side parts where it can be slid out on an end side. USE/ADVANTAGE - Foundation frame for the drive assemblies of hydraulic pumps which easily adapts to units of different dimensions.

Pump, particularly internal- or external gear pump, vane pump, axial piston pump or radial piston pump, has data store, in which characteristic curve indicating relationship between speed of drive shaft and fluid flow of pump is stored

The pump has a rotatable drive shaft and a suction- and pressure connection, where a fluid flow from the suction connection to the pressure connection is effectuated by the rotation of the drive shaft. The pump is provided with a data store, in which a characteristic curve is stored, which indicates the relationship between the speed of the drive shaft and the fluid flow of the pump. The data store is a bar code or a matrix code, which is mounted on the outer surface of the pump. The pump has a constant displacement volume.

Installation for conveying a medium acting as an electrolyte

An installation is proposed which is used for conveying a medium acting as an electrolyte, especially fuel, from a tank to an internal-combustion engine. The conveyor installation is provided with an electric drive motor through which the medium flows. The conventional fuels, having an electrical conductivity in the picoSiemens range do not cause any problems in such an electric motor. However, the alcoholic fuels (M15, M100, E100 etc.) which have been coming into the foreground more strongly in recent times, have an electrical conductivity in the microSiemens range, so that they behave like an electrolyte. In this case, especially the live, exposed conductors on the positive side of the motor operating circuit, such as the commutator, the braided cable leading from the positive terminal to a brush etc. can be attacked and eroded. However, metal components such as the brush guide, brush compression spring, motor housing and magnetic return path ring, which are wetted by the medium to be ...

INNENZAHNRADPUMPE ALS SCHMIEROELPUMPE.

The gear pump with internal teeth has an externally toothed inner rotor, meshing with an eccentric internally toothed outer one. The latter is fixed in the housing, while the drive is taken to the inner rotor. The inner rotor (4) is guided radially in the housing (1) by a recess (13) in one or both ends, into which a boss (12) on the housing or cover (2) protrudes.

Gear pump drive gear pressure loaded bearing

Method of and apparatus for shaft speed detection by monitoring pump output

Оголовок вакуумного насоса

Полезная модель относится к комплектующему оборудованию вакуумных насосов, в частности к конструкции оголовка.Техническим результатом, решаемым предлагаемой полезной моделью, является создание конструкции оголовка для вакуумного насоса, обладающей повышенной коррозийной стойкостью, за счет чего обеспечения длительной работы вакуумного оборудования.Технический результат в предлагаемой полезной модели достигают созданием оголовка для вакуумного насоса, в котором, согласно полезной модели, корпус и крышка выполнены в виде единой детали из коррозийно-стойкого синтетического материала, оголовок снабжен пластиной, изготовленной из нержавеющей стали, размещенной снизу корпуса и имеющей установочные места для клапанов всасывания и нагнетания. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 201 262 U1 (51) МПК F04C 15/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F04C 15/00 (2020.08) (21)(22) Заявка: 2020129122, 02.09.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Общество с ограниченной ответственностью "Экотол-Сервис" (RU) Дата регистрации: 07.12.2020 (45) Опубликовано: 07.12.2020 Бюл. № 34 2 0 1 2 6 2 R U (54) Оголовок вакуумного насоса (57) Реферат: Полезная модель относится к комплектующему оборудованию вакуумных насосов, в частности к конструкции оголовка. Техническим результатом, решаемым предлагаемой полезной моделью, является создание конструкции оголовка для вакуумного насоса, обладающей повышенной коррозийной стойкостью, за счет чего обеспечения длительной работы вакуумного оборудования. Технический результат в предлагаемой Стр.: 1 полезной модели достигают созданием оголовка для вакуумного насоса, в котором, согласно полезной модели, корпус и крышка выполнены в виде единой детали из коррозийно-стойкого синтетического материала, оголовок снабжен пластиной, изготовленной из нержавеющей стали, размещенной снизу корпуса и имеющей установочные места для клапанов всасывания и ...

Pendulum-slide cell pump

A pendulum-slide cell pump may include a rotationally mounted inner rotor connected via pendulum-slides with an outer rotor and wherein the outer rotor may be configured to transfer rotational movement of the outer rotor to the inner rotor via the pendulum-slides.

Rotary compressor having gate axially movable with respect to rotor

A rotary compressor having a housing and a rotor positioned within an internal cavity of the housing. The rotor being configured to rotate about a rotor axis of rotation eccentric to a housing longitudinal axis. A gate is also provided that is slidably mounted therewith the rotor and movable axially about and between a first position, in which a distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor. The distal end of the gate being constrained to be spaced proximate from the inner wall surface of the housing as the rotor rotates about the rotor axis of rotation.

Pump assemblies with freeze-preventive heating

Pumps are disclosed that include a pump housing and at least one movable pumping element situated in the housing. The pumping element(s) are magnetically driven by magnetically coupling an external magnet driver (e.g., a stator) to a driven magnet located in the housing. A control circuit selectively operates the stator and a heat-producing element, so as to energize the heat-producing element especially in a potential freezing condition when the pump is not being otherwise operated. Thus, the fluid in the pump is prevented from freezing, and freeze-related pump damage is avoided. The heat-producing element can be the stator itself energized differently from when the stator is used for driving the pump.

Seal retaining sleeve for gear pump

A shaft assembly includes a shaft with a first radial shoulder and a second radial shoulder along a shaft axis. A seal retaining sleeve is defined around the shaft axis to position a shaft seal. A retainer plate at least partially between the first radial shoulder and the second radial shoulder is adjacent to the seal retaining sleeve to position and provide access to the seal retaining sleeve and shaft seal.

Downhole Backspin Retarder for Progressive Cavity Pump

A backspin retarder for a progressive cavity pump deploys on the drive string uphole from a pump unit. The backspin retarder has a shaft that connects to portions of the drive string. An impeller disposes on the shaft and can move axially and radially. In an unengaged condition, the impeller and shaft can rotate relative to one another so the drive string can rotate in a drive direction without impediment from the impeller. In an engaged condition, the impeller rotates with the shaft in a backspin direction. In this way, vanes on the impeller can retard the backspin of the shaft and drive string by attempting to force the lifted fluid column flowing downhole past the impeller back uphole. The retarder can use a pin and slot arrangement or an arrangement of engageable teeth to engage the impeller to the rotation of the shaft.

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.

Rapid ink-charging of a dry ink discharge nozzle

The present teachings relate to methods and apparatus for depositing one or more materials (e.g., one or more films, such as one or more solids) on one or more substrates, which may form part of an OLED or other type(s) of display. In some embodiments, the disclosure relates to apparatus and methods for depositing ink on one or more substrates. The apparatus can include, for example, one or more chambers for receiving ink, and plural orifices configured for ejecting droplets of the ink. The ejected droplets of ink can be received at unique, spaced-apart locations. In some embodiments, a single liquid ink-holding chamber, which includes plural orifices (e.g., three), receives ink in liquid form having a plurality of dissolved or suspended particles, and droplets of the ink are ejected substantially simultaneously to respective, spaced-apart locations on one or more substrates.

Pump-motor assembly

A pump-motor assembly includes a motor housing, a motor disposed substantially within the motor housing, and a pumping element driven by the motor. A pressurized region is filled with a fluid pressurized by the pumping element, and a fluid passage is in fluid communication with the pressurized region and the motor housing. Fluid flows from the pressurized region to the motor housing and at least partially submerges the motor.

Vacuum control in a vacuum filler without external air supply

A conveyor system for a filling machine and a method of conveying pasty mass with a corresponding conveyor system and a corresponding filling machine, including a housing with a vacuum opening and a vacuum pump as well as a suction line for generating a vacuum in the conveyor system. A valve means and at least one pressure sensor for measuring the pressure in the suction line and/or in the conveyor system are provided. A control means controls the vacuum in the conveyor system or the suction line, respectively, wherein the cross-section of the suction line is adjusted in response to the measured pressure via the valve means.

Scroll-Type Fluid Machine

A scroll-type fluid machine reduces intrusion of abrasion powders, generated by sliding of a conductor causing an orbiting scroll side and a fixed scroll side to be conducted, into a compression chamber, and improves reliability of a compressor. The scroll-type machine includes a casing, a fixed scroll having a flange surface attached to the casing, and a wrap portion provided at an end plate, an orbiting scroll having a wrap portion provided at the end plate, and provided in an opposed relationship with the fixed scroll, a drive shaft connected through a crank portion to the orbiting scroll, an orbiting bearing, a face seal portion arranged between the orbiting scroll and the fixed scroll, a cooling fan, and an orbiting scroll side conductive brush.

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

Vane pump apparatus and method

The invention relates to a vane pump, comprising an electric drive unit having an electric motor and a motor shaft, a pump chamber, attached on the electric drive unit, a rotor having a plurality of blades, said rotor being arranged concentrically to the motor shaft within the pump chamber, wherein the motor shaft is engaged with the rotor by way of a tappet which is connected torsionally rigid with the motor shaft and the tappet comprises at least one tappet peg, which is engaged in a rotor recess that corresponds to the tappet peg, wherein the at least one rotor recess has an oval shape and the tappet peg is contoured in such a way that two first slightly curved contoured sections each form one contact area with one oblong planar section each of the rotor recess.

ROTATION DEVICE INCLUDING SEAL STRUCTURE

A seal member is configured so that an annular rubber member is disposed in an annular storage chamber of a resin annular member. Thus, the rubber annular member is not directly in contact with a drive shaft, and the rubber annular member can be prevented from wearing or peeling without requiring a rotation stopping structure for the seal member. Furthermore, the seal member is provided with first and second communication mouths, so that a brake fluid pressure is applied to compartments obtained by dividing the annular storage chamber using the rubber annular member. Thus, the rubber annular member is pressed, and then is elastically deformed, and accordingly, the resin annular member is expanded by the elastic force. Thus, a self-sealing operation can be performed on the basis of a high pressing force. 1. A rotation device comprising:a shaft;a casing at which a center hole is formed so as to house the shaft while allowing relative rotation of the shaft; anda seal structure located in the center hole of the casing, the seal structure accordingly sealing a void between the shaft and the casing,the seal structure including:a resin annular member including a shaft-side seal surface tightly in contact with the shaft and a casing-side seal surface tightly in contact with the casing, and having an annular storage chamber between the shaft-side seal surface and the casing-side seal surface; anda rubber annular member located in the annular storage chamber, being tightly in contact with an inner wall surface at each of an inner circumferential side and an outer circumferential side of the annular storage chamber, and thereby forming compartments into which the annular storage chamber are divided,wherein a first communication hole and a second communication holeare formed at the resin annular member, the first communication hole causing one of both parts into which the seal structure divides a void between the shaft and the casing to communicate with one of both of the ...

Seal for Oil-Free Rotary Displacement Compressor

Non-contacting cartridge shaft seals prevent leakage loss of process gases in an “oil free” rotary screw compressor or blower, while simultaneously preventing ingress of lubricating oil to the pumping chamber, allowing the compressor/blower to generate process pressure differentials without oil contamination. A compact unitized seal cartridge assembly is provided in the end plates of the pump housing. One of the rotor shafts extends through an aperture in the end plate or housing, between the pumping chamber and oil-lubricated gear/bearing cases. Internal elements have the ability to self-align radially achieving essential concentricity with shaft rotational axes. The rotor shafts or sleeves non-contact relationship during operation allow increased ranges of shaft rotational speeds. Air seal elements restrict flow of process air from the pumping or compression chamber, and oil seal elements with a directional spiral groove on the inside diameter prevent the leakage of lubricating oil to the process or atmosphere. 1. A seal cartridge for use in rotary displacement compressor , the compressor having a compressor chamber between two shaft bearings , comprising:a) a cartridge carrier disposed in a seal cavity and around a shaft capable of housing at least two self aligning seal rings, the cartridge carrier including a fluid communication path in fluid communication with the environment outside the seal cavity, the shaft having a closely controlled outer diameter surface;b) a first oil seal ring disposed within a cartridge cavity at least partially defined by an inner diameter of said cartridge carrier and sealing between a fluid communication path side and a shaft bearing side, the first oil seal ring being statically sealed against a surface of said cartridge carrier, the first oil seal ring further comprising a spiral groove in a machined inner diameter surface thereof, the machined inner diameter surface having very close tolerances, and the spiral grooves being ...

COMPONENT HAVING REDUCED METAL ADHESION

The invention relates to an assembly () having at least two metallic components () which are subject to sliding stress and each have a sliding surface and in operation slide against one another, wherein at least one of the components () consists of a metallic sintered material having an iron-based matrix containing iron together with carbon and up to 10% by weight of at least one non-ferrous metal at least in the region of the sliding stress, where the carbon content is at least 1% by weight and not more than 10% by weight and at least part of the carbon is present in unbound particulate form in the matrix. 112323. An assembly () , in particular a pump for a motor vehicle , comprising at least two metal components ( , ) which are subject to sliding stress , in particular a stator and a rotor , which each have a sliding surface and in operation slide against one another , where at least one of the components ( , ) at least in the area of sliding stress is made from a metal sintered material having an iron-based matrix , which in addition to iron contains carbon and up to 10 wt. % of at least one non-ferrous metal , the proportion of carbon content being at least 1 wt. % , wherein the carbon content is a maximum of 10 wt. % and at least a portion of the carbon is present in unbound particulate form in the matrix.21. The assembly () as claimed in claim 1 , wherein the proportion of unbound carbon is at least 80%.31. The assembly () as claimed in claim 1 , wherein the proportion of carbon is between 1.5 wt. % and 8 wt. %.41. The assembly () as claimed in claim 1 , wherein the unbound carbon has a particle size with a length of between 50 μm and 300 μm and a width of between 5 μm and 70 μm.51. The assembly () as claimed in claim 1 , wherein the matrix has a structure composed of perlite and ferrite.61. The assembly () as claimed in claim 5 , wherein the ratio of perlite to ferrite is between 95:5 and 50:50.71. The assembly () as claimed in claim 5 , wherein the ...

Rotary Piston Pump And Method For Operating A Rotary Piston Pump

A rotary piston pump equipped with a motor having two counter-rotating rotary pistons. The two rotary pistons are housed in an oval pump housing. The two rotary pistons are arranged on a first output shaft and a second output shaft. The first output shaft and the second output shaft are driven and synchronized via at least one elastic element. 1. A rotary piston pump with at least one motor with at least two counter-rotating rotary pistons and a pump housing , wherein the at least two rotary pistons are disposed on a first output shaft and a second output shaft and wherein the first output shaft and the second output shaft are synchronised and driven in such a way that the at least two rotary pistons engage into one another , characterised in that the rotary pistons are connected to one another at the drive side via at least one elastic element.2. The rotary piston pump according to claim 1 , characterised in that the elastic element is an endless claim 1 , flexible element.3. The rotary piston pump according to claim 2 , characterised in that the endless claim 2 , flexible element is a double-toothed belt and/or a chain and/or a link belt and/or at least one coated toothed wheel.4. The rotary piston pump according to claim 3 , characterised in that the length of the free strand can be adjusted by means of the active radii of the first output wheel and the second output wheel and/or that the degree of the synchronisation precision can be adjusted by means of a free length of a strand between the first output wheel and the second output wheel.5. The rotary piston pump according to claim 4 , characterised in that the length of the free strand can be adjusted by means of the spacing between the first output shaft and the second output shaft.6. The rotary piston pump according to claim 4 , characterised in that the coated toothed wheel is coated with an elastic material.7. The rotary piston pump according to claim 1 , characterised in that the motor can be positioned ...

Gear Pump

A gear pump is described with a plurality of gear wheels which intermesh in order to deliver a pumping medium, and are rotatably held in a pump case and deliver a pumping medium from a priming zone into a delivery pressure zone of the pump case. One of the gear wheels is driven by a pump shaft which protrudes with a coupling end out of the pump case. In order to seal the pump case, a shaft sealing ring is held around the circumference of the pump shaft, wherein according to the invention, in order to avoid material deposits, the shaft sealing ring is associated with an interior flushing chamber on the circumference of the pump shaft, the flushing chamber being connected to the delivery pressure zone of the pump case by a feed channel in the pump case. 1. A gear pump comprising:a plurality of intermeshed gear wheels that are rotatably held in a pump housing to deliver a pumping medium from a priming zone into a delivery pressure zone of the pump housing;a pump shaft for driving one of the gear wheels, wherein the pump shaft has a coupling end protruding from the pump housing and a shaft sealing ring held on the circumference of the pump shaft for sealing the pump housing; andan interior flushing chamber about the circumference of the pump shaft and associated with the shaft sealing ring, the flushing chamber being connected to the delivery pressure zone of the pump housing by a feed channel in the pump housing21. The gear pump according to Claim , wherein the flushing chamber is in fluid communication with the priming zone of the pump housing by a return channel in the pump housing.31. The gear pump according to Claim , wherein at least one of the feed channel and the return channel flow into a region of a stop face of a housing plate of the pump housing which cooperates on the front side with the gear wheel held on the pump shaft.41. The gear pump according to Claim , wherein the feed channel and the return channel flow into the flushing chamber at an angular offset ...

Rotary machine and pump driving apparatus

A rotary machine includes a rotary shaft having two driving reactive force receiving parts that are displaced in an axial direction and are applied with diametrical reactive forces having different rotation phases from driving targets as normal loads; and bearings that rotatably support the rotary shaft wherein the rotary shaft is rotated at a state where the rotary shaft is supported by the bearings to drive the driving targets via the driving reactive force receiving parts, wherein the bearings are respectively provided at both axial sides of one of the two driving reactive force receiving parts, which receives a higher normal load, and wherein a leading end side of the rotary shaft more than the other of the two driving reactive force receiving part, which receive a lower normal load lower than the higher normal load, is configured as a free end.

Urea solution pump structure

A urea solution pump structure may include a housing portion connected to an external connector and covering an upper portion of the pump structure, a motor portion disposed at a lower portion of the housing portion and including a rotor and a stator, a case portion receiving the motor portion therein, and a pump portion disposed at a lower portion of the case portion and fluid-isolated from the motor portion, wherein the pump portion may be formed with an inlet and an outlet for a fluid, wherein a hollow cover may be provided at a lower portion of the case portion for separating the pump portion and the motor portion, and an oil seal unit may be mounted at a lower portion of the hollow cover for sealing a rotating shaft of the rotor which penetrates through the hollow cover.

VANE CELL MACHINE

The invention concerns a vane cell machine with a stator and a rotor having radially displaceable vanes arranged in guides, said vanes bearing on an inside of the stator and bordering, together with the rotor, the stator and a side wall, work chambers at each axial end of the rotor. It is endeavoured to provide a vane cell machine that has a good internal tightness, in which the wear is still kept small. For this purpose, in a radially internal area the side wall comprises an insert that is axially movable in the side wall and has a pressure application surface axially inside and axially outside. 1. A vane cell machine with a stator and a rotor having radially displaceable vanes arranged in guides , said vanes bearing on an inside of the stator and bordering , together with the rotor , the stator and a side wall , work chambers at each axial end of the rotor , wherein in a radially internal area the side wall comprises an insert that is axially movable in the side wall and has a pressure application surface axially inside and axially outside.2. The vane cell machine according to claim 1 , wherein the side wall is made as a plate.3. The vane cell machine according to claim 1 , wherein the side wall is formed in a housing of the vane cell machine.4. The vane cell machine according to claim 1 , wherein a sealing ring is arranged between the stator and the insert.5. The vane cell machine according to claim 4 , wherein the sealing ring is arranged at a radial position of the rotor claim 4 , at which the forces caused by the pressure of the fluid radially outside the sealing ring are as large as forces caused by the pressure of the fluid on the side of the insert facing the rotor.6. The vane cell machine according to claim 1 , wherein the insert comprises an axial extension that forms a bearing for a shaft that is connected to the rotor.7. The vane cell machine according to claim 6 , wherein the extension comprises a step that forms a bearing surface for the sealing ring. ...

VANE CELL MACHINE

The invention concerns a vane cell machine having a stator and a rotor that is made of a first material, the rotor having guides comprising radially displaceable vanes that rest on an inside of the stator and border work chambers at each axial end of the rotor together with the rotor, the stator and individual stationary side walls, the vanes having, at least at some contact faces with the rotor and the stator, a second material that interacts unfrictionally with the first material. It is endeavoured to keep the wear small. For this purpose, in a radially inner area, the side wall comprises a surface of a third material interacting unfrictionally with the first material and, in a radially outer area a surface made of the first material. 1. A vane cell machine having a stator and a rotor that is made of a first material , the rotor having guides comprising radially displaceable vanes that rest on an inside of the stator and border work chambers at each axial end of the rotor together with the rotor , the stator and individual side walls , the vanes having , at least at some contact faces with the rotor and the stator , a second material that interacts unfrictionally with the first material , wherein in a radially inner area , the side wall comprises a surface of a third material interacting unfrictionally with the first material and , in a radially outer area a surface made of the first material.2. The vane cell machine according to claim 1 , wherein the side wall is made as a plate.3. The vane cell machine according to claim 1 , wherein the side wall is formed in a housing of the vane cell machine.4. The vane cell machine according to claim 2 , wherein a radially inner area claim 2 , the side wall comprises an insert made of the third material.5. The vane cell machine according to claim 4 , wherein the insert is arranged in a central recess in the side wall and comprises an eccentric bore through which the rotor is led.6. The vane cell machine according to claim 4 , ...

Contact Element For Rotary Piston Pump

The rotary piston pump includes two counter-rotating rotary pistons and an oval pump housing. Every rotary piston has a rotary piston vane and is provided with a contact element. The contact points of the flanks of the two rotary pistons in which the two rotary pistons form a friction pairing are provided with a contact element each. The interior of the oval pump housing is likewise provided with an exchangeable contact element. 1. A rotary piston pump comprising at least two counter-rotating rotary pistons and a pump housing , wherein each rotary piston comprises rotary pistons vanes and wherein each rotary piston is provided at least with one contact element , characterised in that the rotary pistons are provided at their flank that at least one contact element , with which the rotary pistons form a friction pair , wherein the pump housing is provided at its interior with at least one contact element and wherein the contact elements are disposed at the flanks of the rotary pistons in such a way that an active interrelation is ensured between the contact elements of the rotary pistons and caps of the rotary pistons.2. The rotary piston pump according to claim 1 , characterised in that the contact elements of the rotary pistons and/or the contact element of the pump housing are exchangeable.3. The rotary piston pump according to claim 1 , characterised in that the contact element of the pump housing comprises at least two parts.4. The rotary piston pump according to characterised in that the contact elements of the rotary pistons and/or the contact element of the pump housing are connected by a form-fit claim 1 , friction-locked and/or firmly bonded connection to the rotary piston and/or the pump housing.5. The rotary piston pump according to claim 1 , characterised in that the contact elements of the rotary pistons and/or the contact element of the pump housing are formed from a sealing and/or slidable material.6. The rotary piston pump according to claim 1 , ...

Electric pump

An electric pump includes a motor, a bracket including a support surface arranged to be perpendicular to a rotation shaft of the motor and a bush attachment bore provided to be perpendicular to the support surface, and a bush fitted to the bush attachment bore. The bush attachment bore includes a base portion formed in a shape similar to a portion of the bush fitted to the bush attachment bore, the bush attachment bore including an expansion portion integrally formed with the base portion and extending in a circumferential direction of the motor.

ROTARY LOBE PUMP WITH WIPER BLADES

A positive displacement rotary pump with an improved impeller design integrating replaceable wiper inserts. The impeller generally has or more lobes and an equal number of conjugate surfaces. Each lobe has an arcuate peripheral end comprising a plurality of wiper blades. The wiper blades improve efficiency by making a seal with a pump chamber or the conjugate surface on the other impeller as it rotates. The wiper blades are arranged such that constant and successive contact between wiper blades and impellers is achieved. 1. A rotary pump , comprising:a pump chamber having an interior chamber wall;a first impeller and a second impeller disposed within said pump chamber, each of said impellers comprising:a hub located substantially in the center of said first impeller and said second impeller, wherein each of said hubs rotates around a central axis of each of said impellers;three or more lobes extending radially outward from each of said central axes, each of said lobes having a first end and a second end, said second end proximate to said central axis;said first end comprising a substantially arcuate periphery; anda substantially arcuate cut-out portion between each of said lobes on said impellers, each of said arcuate cut-out portions having a conjugate surface;each of said lobes comprising a plurality of wiper inserts, wherein each of said wiper inserts operatively engages a conjugate surface when each of said first ends of each of said lobes is proximate to each of said conjugate surfaces;wherein said plurality of wiper inserts are radially distributed about said substantially arcuate periphery such that at least one of said wiper inserts is in contact with at least one of said impellers throughout rotation of said impellers;a biasing means for providing a force to each of said wiper inserts in a direction radially outward from each of said central axes; anda drive means interconnected to each of said hubs, wherein said drive means rotates each of said hubs and ...

SEALING STRUCTURE FOR COMPRESSOR

A sealing structure for a compressor includes a cylindrical housing in which a compression unit is accommodated (one end of the housing is opened so as to form an opening), a header fixed to the housing to close the opening of the housing, a ring-shaped gland formed on an end face of the one end of the housing, an O-ring installed in the gland to seal between the housing and the header, and a fastening mechanism for fixing the header to the housing. The end face of the housing is separated, by the gland, into an outer face on an outer circumferential side and an inner face on an inner circumferential side. A step is formed between the outer face and the inner face. According to the above structure, sealing characteristics between the housing and the header can be improved. 1. A sealing structure for a compressor , the structure comprising:a cylindrical housing in which a compression unit is accommodated, one end of the housing being opened so as to form an opening;a header fixed to the housing to close the opening of the housing;a ring-shaped gland formed on an end face any one of the housing and the header;an O-ring installed in the gland to seal between the housing and the header; anda fastening mechanism for fixing the header to the housing, whereinthe end face is separated, by the gland, into an outer face on an outer circumferential side and an inner face on an inner circumferential side, anda step is formed between the outer face and the inner face.2. The sealing structure according to claim 1 , whereinone of the outer face and the inner face on a side of which the fastening mechanism is provided is protruded from a plane of another of the outer face and the inner face so as to form the step.3. The sealing structure according to claim 2 , whereinthe fastening mechanism is provided on a side of the outer face.4. The sealing structure according to claim 1 , whereina suction port for suctioning refrigerant into an inside of the housing or a discharge port for ...

Double-screw liquid pump

A double-screw liquid pump is provided, which is applicable to an Organic Rankin Cycle (ORC). The double-screw liquid pump includes a semi-sealed or fully sealed shell, and the shell includes a first cavity and a second cavity isolated from each other. A motor is disposed in the first cavity, and a main body part of a double-screw is disposed in the second cavity. At least one rotor of the double-screw is fixedly connected to a rotor of the motor, and the double-screw rotates through driving of the motor. A liquid refrigerant injection inlet and a refrigerant outlet are disposed on the first cavity, and the motor is cooled through evaporation of a liquid refrigerant; a liquid inlet and a liquid outlet are disposed on the second cavity. In the double-screw liquid pump applied to the ORC provided in the present invention, since a resistance torque of the female rotor is very small, the liquid pump does not wear even when the liquid viscosity is very low, contributing to good reliability, and thereby improving power generation efficiency of the ORC. In addition, the semi-sealed or fully sealed shell can effectively prevent leakage of the refrigerant.

GEAR PUMP WITH ASYMMETRICAL DUAL BEARING

An asymmetrical bearing is disclosed for use in a gear pump. The bearing may have first and second opposing faces, and first and second bores in communication with the first and second opposing faces. The first and second bores may be configured to receive first and second shafts of a gear pump. The bearing may have a first flat side surface and a second curved side surface, where the second curved side surface includes first and second curved portions associated with the first and second bores, respectively. The first and second faces and the first flat side surface may also include a plurality of grooves configured to direct a flow of process fluid over the bearing during operation of the pump. Self-aligning features can be provided on one or more sealing elements to ensure desired alignment of the sealing components during assembly. Other embodiments are described and claimed. 1. A pump , comprisinga housing;a drive shaft having a first gear;a driven shaft having a second gear; and first and second opposing faces and first and second bores configured to receive the drive shaft and the driven shaft;', 'a first flat side surface and a second curved side surface, the second curved side surface having first and second curved portions associated with the first and second bores, respectively; and', 'a plurality of grooves in the first and second opposing faces and the first flat side surface, the plurality of grooves configured to direct a flow of process fluid over the bearing during operation of the pump., 'first and second asymmetrical bearings, each of the asymmetrical bearings having2. The pump of claim 1 , wherein the first and second bores of at least one of the asymmetrical bearings further includes a lubrication groove.3. The pump of claim 2 , wherein the lubrication groove is formed as a portion of a circle that is offset from a center of the respective bore by an offset distance claim 2 , and at an angle “α” with respect to a line perpendicular to the ...

Transmission unit

A transmission unit comprises a planetary wheel set, which comprises a plurality of gearwheel elements and is designed as a pump which effects delivery of hydraulic fluid from a suction zone to a pressure zone of a pump casing containing the planetary wheel set by means of the gearwheel elements. A controllable throttling device is provided in order to selectively throttle a fluid flow pumped between the suction zone and the pressure zone and thereby to brake the gearwheel elements of the planetary wheel set relative to one another. A fluid reservoir, which can be connected simultaneously to the suction zone and to the pressure zone via the throttling device, is arranged in a pump casing interspace formed between a plurality of gearwheel elements of the planetary wheel set.

Sliding vane positive displacement pump

A sliding vane, positive displacement pump is provided which uses a fixed disc configuration wherein a rotor includes a pair of discs affixed to opposite faces of the rotor so as to rotate with the rotor/shaft. Preferably, the discs each have an outer diameter proximate the outer diameter of the rotor and define an outer disc surface which faces radially outwardly towards an opposing, inside surface of the pump head or other casing structure. A dynamic seal is provided along the outside disc diameter which eliminates the formation of slip between end surfaces. The path of fluid traveling from the high pressure pump side near the outlet to the low pressure side of pump near the inlet is controlled with a radial clearance that is defined between the OD of each disc and the ID of the stationary head. This effectively eliminates direct slip paths extending radially across axially-directed end faces

INTERNAL GEAR PUMP

An internal gear pump includes a ring gear and a pinion configured to mesh with the ring gear. The ring gear and pinion delimit a pump chamber extending from a suction region to a pressure region. The internal gear pump also includes an axial disk arranged on front faces of the ring gear and the pinion and includes a lubricant feed from the suction region between the axial disk and the ring gear and pinion. The lubricant feed includes a lubricant channel which passes through the axial disk. A wedge gap is delimited between the axial disk and the ring gear and pinion. The wedge gap communicates with the suction region and, when the ring gear and the pinion are driven in rotation, a lubricating film forms between the axial disk and the ring gear and pinion. 1. An internal gear pump , comprising:a ring gear;a pinion arranged eccentrically in the ring gear and configured to mesh with the ring gear in a circumferential section;a pump chamber delimited between the ring gear on an outside and the pinion on an inside, the pump chamber extending in a circumferential direction from a suction region to a pressure region outside the circumferential section in which the ring gear and the pinion mesh;at least one axial disk arranged on a front face of the ring gear and a front face of the pinion and configured to bear against the front faces of the ring gear and of the pinion, the at least one axial disk configured to be subjected to pressure on an outer side oriented away from the ring gear and the pinion and configured to delimit the pump chamber on one side; anda lubricant feed from the suction region between the at least one axial disk and the ring gear and/or the pinion.2. The internal gear pump as claimed in claim 1 , wherein:the lubricant feed includes a lubricant channel in the at least one axial disk, andthe lubricant channel is configured to communicate with the suction region of the internal gear pump and is configured to open, on an inner side of the at least one ...

HYDROSTATIC PISTON ENGINE HAVING A BRAKE DEVICE

A hydrostatic piston engine includes an actuating element configured to actuate a brake device to produce a braking force on a rotor of the piston engine. The actuating element is configured to release the brake device when a hydraulic force acts on the actuating element. The hydraulic force prevails in a pressure chamber which is connected to a pressure medium source via a first throttle point. The pressure chamber is also configured to be connected to a pressure medium sink. The hydrostatic piston engine also includes a pressure retention valve device configured to open in a direction of the pressure medium sink. The pressure retention valve device is disposed between the pressure chamber and the pressure medium sink. The opening pressure of the pressure retention valve device is at least equal to the pressure in the pressure chamber which is necessary to release the brake device. 1. A hydrostatic piston engine comprising:a rotor;a brake device configured to produce a braking force on the rotor;an actuating element configured to actuate the brake device, the actuating element configured to release the brake device, when a hydraulic force is applied on a surface of the actuating element in a pressure space, the pressure space connected via a first throttle point to a pressure medium source, and the pressure space configured to be connected to a pressure medium sink; anda pressure-holding valve device configured to open in a direction of the pressure medium sink and arranged between the pressure space and the pressure medium sink,wherein an opening pressure of the pressure-holding valve device is at least equal to a pressure in the pressure space which is required to release the brake device.2. The hydrostatic piston engine as claimed in claim 1 , wherein:a second throttle point is formed parallel to the pressure-holding valve device, andthe pressure space is connected to the pressure medium sink via the second throttle point.3. The hydrostatic piston engine as ...

OUT ROTOR DRIVE ELECTRICAL VANE PUMP

A variable displacement vane oil pump for use in a vehicle powertrain includes a mechanical drive coupled to a first portion of a rotor and an electrical drive coupled to a second portion of the rotor such that the variable displacement vane pump may be driven by either or both the mechanical and electrical drives to achieve greater efficiency and control while maintaining oil pressure under all circumstances including start/stop conditions. The oil pump, when being driven by the mechanical drive only, remains coupled to the electric drive such that it rotates the motor of the electric drive to generate electricity that may be used to recharge a source of electricity such as a battery. The electric drive further includes a four phase controller for controlling the motor of the electric drive to efficiently operate the variable displacement vane oil pump without the use of a pressure relief valve. 1. A pump comprising:a housing having an inlet for receiving a supply of a fluid and an outlet for supplying the fluid at a pressure higher than the pressure of the fluid at the inlet;a mechanical drive coupled to the pump for operating the pump; andan electrical drive coupled to the pump for operating the pump wherein selectively the mechanical drive, the electrical drive or both mechanical and electrical drives may be used independently or in conjunction to operate the pump and control its fluid output.2. The pump of wherein the mechanical drive and the electrical drive are independently controllable.3. The pump of wherein the mechanical drive and electrical drive are independently operable at the same time.4. The pump of wherein the mechanical drive operates at a speed dependent upon the speed of an engine and the electrical drive operates at a speed independently of the speed of the engine.5. The pump of further comprising a variable displacement vane pump including a first inner rotor and a second outer rotor and wherein the mechanical drive comprises a shaft coupled ...

Pump Device

A pump device has a motor rotation shaft and a pump rotation shaft whose end portion is connected to an end portion of the motor rotation shaft and which drives a pump unit. The pump device includes: an outer circumferential seal portion that is arranged at either one or both of radially outer sides of the end portion of the pump rotation shaft and the end portion of the motor rotation shaft so as to overlap with either one or both of the end portion of the pump rotation shaft and the end portion of the motor rotation shaft in axial directions of the pump rotation shaft and the motor rotation shaft and has an outer circumferential seal surface; and a seal unit that makes sliding contact with the outer circumferential seal portion.

ANTI-WEAR COATINGS FOR COMPRESSOR WEAR SURFACES

Anti-wear surface coatings and methods for making them are provided. Such anti-wear surface coatings are particularly suitable for use in a compressor, such as a scroll or rotary compressor. A precursor powder material can be applied via spraying to a wear surface of a metal component of the scroll or rotary compressor. The precursor powder material comprises a powderized thermoplastic polymer (e.g., PEEK), a first lubricant particle (e.g., molybdenum disulfide (MoS)) and a second lubricant particle (e.g., polytetrafluoroethylene (PTFE)), which is heated to form a substantially uniform coating covering the underlying metal component having a thickness of less than or equal to about 0.006 inches (about 152 μm). The anti-wear surface coating can be used on a face seal for a bellows-type shaft seal for compressors. 1. A rotary compressor component comprising:a metal surface of the rotary compressor component defining a wear surface that comprises an anti-wear coating having a thickness of less than or equal to about 0.006 inches (about 152 μm), wherein the anti-wear coating comprises (i) a thermoplastic polymer; (ii) a first lubricant particle, and (iii) a second lubricant particle, wherein the first and second lubricant particles are distinct from one another.2. The rotary compressor component of claim 1 , wherein the thermoplastic polymer a polyaryletherketone (PAEK) thermoplastic polymer selected from the group consisting of: polyetherketone (PEK) claim 1 , polyetheretherketone (PEEK) claim 1 , polyetheretheretherketone (PEEEK) claim 1 , polyetherketoneketone (PEKK) claim 1 , polyetheretherketoneketone (PEEKK) claim 1 , polyetherketoneetheretherketone (PEKEEK) claim 1 , polyetheretherketonetherketone (PEEKEK) claim 1 , and combinations thereof.3. The rotary compressor component of claim 1 , wherein the thermoplastic polymer is selected from the group consisting of: a polyetheretherketone (PEEK) claim 1 , a polyaryletherketone (PAEK) claim 1 , a ...

ROTARY COMPRESSOR AND ROTATION MECHANISM

A rotary compressor, comprising: a housing (), comprising a lubricant oil storage part for containing lubricating oil; a compression mechanism () disposed in the housing (); a driving mechanism () driving the compression mechanism (), the driving mechanism () comprising a rotation shaft (), through-holes () extending along the axial direction of the rotating shaft () are disposed inside the rotating shaft (), and the rotation shaft () is in fluid connection with the lubricating oil storage part via the through-holes (); and an oil level sensor () in fluid connection with the through-holes () inside the rotation shaft () via a pressurized collection channel (). Also disclosed is a rotation mechanism, comprising an oil level sensor () in fluid connection with the through-holes () inside the rotation shaft () via the pressurized collection channel (). Accurate and reliable detection of the lubricating oil in a compressor can be done using the pressurized collection channel and the oil level sensor, thus greatly saving cost and improving compressor reliability. 1. A rotary compressor , comprising:a shell including an oil sump for receiving lubricating oil;a compressing mechanism disposed in the shell;a driving mechanism for driving the compressing mechanism, wherein the driving mechanism includes a rotary shaft provided therein with a through hole extending in an axial direction of the rotary shaft and the rotary shaft is in fluid communication with the oil sump via the through hole; andan oil level sensor in fluid communication with the through hole in the rotary shaft through a pressure picking passage.2. The rotary compressor according to claim 1 , further comprising a lower bearing housing for supporting the rotary shaft claim 1 ,wherein the pressure picking passage comprises:a pressure picking hole extending through a side wall of the rotary shaft and in fluid communication with the through hole in the rotary shaft,a circumferential oil groove formed on the rotary ...

Rotary pump exhibiting an adjustable delivery volume, in particular for adjusting a coolant pump

An adjustable delivery volume rotary pump, including: first and second housing structures; a delivery chamber comprising a first chamber wall formed by the first housing structure, a second chamber wall formed by the second housing structure, a fluid inlet in a low-pressure region and a fluid outlet in a high pressure region; a pump wheel rotatable about a rotational axis in the delivery chamber; and a pressing device for generating pressing force. The second housing structure can be moved relative to the first housing structure from a first to a second position, against the pressing force. In the second position, a gap exists between the first and the second chamber walls and fluid can escape from the delivery chamber by bypassing the inlet and the outlet, or a circulation of the fluid which reduces the delivery rate of the rotary pump arises in the gap within the delivery chamber.

Sealing structure, vacuum pump motor including same sealing structure, and vacuum pump

To provide a sealing structure for a vacuum pump motor which maintains the sealing properties of the vacuum pump motor in an ensured fashion, there is provided a sealing structure for a vacuum pump motor 100, including a lead wire 151 a which is passed through an opening portion 143 formed in a motor frame 140 to be connected to a motor stator 110 and a seal member 145 which seals the opening portion 143, wherein the lead wire 151 a includes a core wire portion 154 a and a covering portion 155 a which covers the core wire portion 154, and a seal portion 153 is formed in at least part of the core wire portion 154 a.

Suction Header Arrangement for Oil Management in Multiple-Compressor Systems

A refrigeration system with two or more compressors configured to compress a flow of refrigerant with oil entrained therein. A suction flow piping arrangement is configured to supply a flow of refrigerant and oil to the two or more compressors. The suction flow piping arrangement has a suction header configured to carry the flow of refrigerant and oil, and a primary compressor supply conduit connected to the suction header. The primary compressor supply conduit supplies refrigerant and oil to a first compressor of the two or more compressors. A secondary compressor supply conduit branches off from the suction header. The secondary compressor supply conduit supplies refrigerant to a second compressor of the two or more compressors. The primary compressor supply conduit is configured to supply more oil to the first compressor than the secondary compressor supply conduit supplies to the second compressor.

Rotational clap suction/pressure device

The present invention relates to a simple and straightforward positive displacement suction/pressure device (rotational clap suction/pressure device) for utilizing in general industrial flow machines, such as various positive displacement pumps, vacuum pumps, compressors, flow meters, and rotary internal combustion engines. The object of the present invention using a double non-uniform rotation is to provide a simple and durable mechanical device having improved efficiency, by replacing the existing linear contact between various types of rotors or between a rotor and a housing, which is a problem in existing positive displacement flow machines and rotary internal combustion engines, with a whole surface.

ASYMMETRIC LOBES FOR MOTORS AND PUMPS

An apparatus for use in a wellbore may include a stator having a bore and a rotor disposed in the bore. Either or both of the rotor and the stator may include a layer that has an asymmetrical material property profile along at least a portion of a circumference of that layer. 1. An apparatus for use in a wellbore , comprising:a stator having a bore; anda rotor disposed in the bore, the stator and the rotor cooperating to form at least one fluid chamber and at least one seal at substantially the same time during relative rotation between the rotor and the stator,wherein a layer forming at least a portion of the at least one fluid chamber and portion of the at least one seal has an asymmetrical material property profile.2. The apparatus of claim 1 , wherein: the layer is formed on opposing sides of a lobe associated with the stator claim 1 , and the asymmetrical material property profile is across a circumference of an inner surface of the stator that includes the lobe.3. The apparatus of claim 1 , wherein: the layer is formed on opposing sides of a lobe associated with the rotor claim 1 , and the asymmetrical material property profile is across a circumference of an outer surface of the rotor that includes the lobe.4. The apparatus of claim 1 , wherein the layer is harder at the at least one fluid chamber than at the least one seal.5. The apparatus of claim 1 , wherein the at least one material property is at least one of: (i) hardness claim 1 , (ii) ductility claim 1 , (iii) compressibility claim 1 , (iv) Modulus of elasticity.6. The apparatus of wherein the at least one material property is at least one of: (i) a mechanical property claim 1 , and (ii) a chemical property.7. The apparatus of claim 1 , wherein the layer includes at least one of: (i) elastomeric material claim 1 , (il) a thermo-plastic material claim 1 , (iii) a ceramic material claim 1 , (iv) a metallic material claim 1 , (v) a composite claim 1 , and (vi) a duroplastic material.8. The apparatus of ...

Heating/cooling system for indwelling heat exchange catheter

A cooling system for an indwelling heat exchange catheter includes a heat exchange bath that is configured to receive a conduit that carries saline to and from the catheter. A heating/cooling fluid is in the bath and exchanges heat with the saline. The heating/cooling fluid flows through a heat exchanger that includes a refrigerant and two variable speed DC compressor for removing heat from the refrigerant. A gear pump circulates the working fluid to and from the catheter and is removably engaged with a pump support platform.

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 and main pump, are housed in the same stator. The invention further provides a vacuum pump stator comprising at least two operatively interconnected cavities, 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, 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. 1. A vacuum pump stator comprising at least two cavities , wherein at least first cavity of the at least two cavities and a second cavity of the at least two cavities each comprises a respective rotor-receiving portion shaped to receive at least one pair of intermeshing rotors , and wherein an axis of the respective rotor-receiving portion of the first cavities cavity is offset with respect to an axis of the respective rotor-receiving portion of the second cavity.2. The vacuum pump stator of claim 1 , wherein the at least two cavities are operatively interconnected by a conduit.3. The vacuum pump stator of claim 2 , wherein the conduit extends through a body of the vacuum pump stator to interconnect two cavities of the at least two cavities.4. The vacuum pump stator of any of claim 2 , or claim 2 , wherein at least one cavity of the at least two cavities comprises a plurality of axially aligned claim 2 , and interconnected claim 2 , rotor-receiving portions.5. The vacuum pump stator of claim 4 , wherein each of the plurality of axially aligned claim 4 , and interconnected claim 4 , rotor receiving portion is adapted claim 4 , in use claim 4 , to receive a pair of intermeshing rotors claim 4 , a first rotor of each pair of intermeshing ...

Rotary Piston Machine and Method for Producing a Seal in a Rotary Piston Machine

A rotary piston engine and a method for manufacturing a sealing in a rotary piston engine are described. The rotary piston engine has at least two piston pairs respectively connected via a link, the pistons of which are arranged at opposite ends of the links and, during operation, circulate on an at least approximately circular path in a piston housing, such that varying working volumes are enclosed between the pistons of different piston pairs during the circulation and that, via a sealing provided between the piston housing and the pistons, a fluid flow between the enclosed working volumes is at least impeded. The technical solution described is characterized in that the sealing is formed by a gap between the pistons and the piston housing and surfaces of the pistons and the piston housing delimiting the gap at least at times are irregularly structured. 120.-. (canceled)21124345732653. A rotary piston engine () with at least two piston pairs () respectively connected via a link () , the pistons () of which are arranged at opposite ends of the links () and , during operation , circulate on an at least approximately circular path in a piston housing () , such that varying working volumes () are enclosed between the pistons () of different piston pairs () during the circulation , and with a sealing () provided between the piston housing () and the pistons () , which at least impedes a fluid flow between the enclosed working volumes ,{'b': 6', '8', '3', '5', '8', '9', '10', '3', '5', '8, 'characterized in that the sealing () is formed by a gap () between the pistons () and the piston housing (), in which no sealing elements are arranged, and that the gap () is designed such that leakage flows between neighboring working spaces are minimized, wherein surfaces (, ) of the pistons () and of the piston housing () delimiting the gap () at least at times have a surface structure generated directly upon commissioning by means of a running-in or grinding-in, resp., process.'} ...

TROCHOID PUMP FOR TRANSFERRING HIGH-VISCOSITY LIQUID UNDER HIGH PRESSURE

Disclosed is a trochoid pump for transferring high-viscosity liquids under high pressure. The trochoid pump includes an idler coupled to an inner through-hole inside a housing to be rotated, a rotor inserted into an inside of the idler, and a shaft configured to rotate the rotor, wherein the idler is provided with an inner toothed groove, into which the rotor is inserted and which has a plurality of projecting teeth, and recessed grooves, which are recessed with a predetermined depth along an outer circumferential surface thereof in a circumferential direction. Unlike an existing gear pump or trochoid pump, the trochoid pump for transferring high-viscosity liquids can reduce a viscous friction force, and can reduce the driving power. 1. A trochoid pump comprising:an idler rotatably coupled to an inner through-hole on an inside of a housing, a rotor inserted into an inside of the idler, and a shaft rotating the rotor,wherein the rotor is inserted into the idler and the idler has an inner toothed groove having a plurality of projecting gear teeth formed thereon, and a recessed groove formed on an outer circumference with a predetermined depth in a circumferential direction.2. The trochoid pump according to claim 1 , wherein the at least one recessed groove is formed on a center portion of the outer circumference of the idler claim 1 , and front and rear circular grooves are formed at front and rear ends that come in contact with an end portion of the rotor on an outer circumference of the idler.3. The trochoid pump according to claim 2 , wherein the front and rear circular grooves are formed to be deeper than the recessed groove.4. The trochoid pump according to claim 1 , wherein the outer circumference of the idler is spaced apart from an inner circumference of the inner through-hole of the housing to form a gap between them.5. The trochoid pump according to claim 1 , wherein the rotor is constructed so that a plurality of gears are formed on an outer circumference ...

ELECTRO HYDROSTATIC ACTUATORS

An electro hydrostatic actuator comprises a hydraulic pump driven by an electric motor to supply hydraulic fluid to a hydraulic actuator. The pump comprises an inlet and an outlet for the hydraulic fluid and an active flow path arranged therebetween such that, in an active mode of operation when the pump is driven by the electric motor, hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet. The pump further comprises a bypass flow path arranged to open between the inlet and outlet such that, in a damping mode of operation when the pump is not driven by the electric motor, hydraulic fluid is able to pass through the pump along the bypass flow path between the inlet and outlet. 1. An electro hydrostatic actuator comprising:an electric motor; and an inlet and an outlet for the hydraulic fluid and an active flow path arranged therebetween such that, in an active mode of operation when the pump is driven by the electric motor, hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet; and', 'a bypass flow path arranged to open between the inlet and outlet such that, in a damping mode of operation when the pump is not driven by the electric motor, hydraulic fluid is able to pass through the pump along the bypass flow path between the inlet and outlet., 'a hydraulic pump driven by the electric motor, the pump configured to supply hydraulic fluid to a hydraulic actuator, the pump comprising2. An electro hydrostatic actuator according to claim 1 , wherein the bypass flow path is arranged to automatically open when the pump is not driven by the electric motor.3. An electro hydrostatic actuator according to claim 2 , wherein the pump further comprises a resilient member arranged to automatically open the bypass flow path when the pump is not driven by the electric motor.4. An electro hydrostatic actuator according to claim 1 , wherein the size of the bypass flow path is adjusted during manufacture and/or ...

Control Of Variable Displacement Vane Pump Used As Scavenge Pump

A system includes a first scavenge oil pump that draws oil from a first draw location within a vehicle according to a first variable displacement associated with the first scavenge oil pump. The first variable displacement is based on a first modified scavenge ratio assigned to the first scavenge oil pump. An oil pump control module determines a first scavenge ratio, determines a first scavenge ratio multiplier based on at least one of vehicle acceleration and vehicle orientation, and applies the first scavenge ratio multiplier to the first scavenge ratio to generate the first modified scavenge ratio. 1. A system comprising:a first scavenge oil pump that draws oil from a first draw location within a vehicle according to a first variable displacement associated with the first scavenge oil pump, wherein the first variable displacement is based on a first modified scavenge ratio assigned to the first scavenge oil pump; andan oil pump control module that determines a first scavenge ratio, determines a first scavenge ratio multiplier based on at least one of vehicle acceleration and vehicle orientation, and that applies the first scavenge ratio multiplier to the first scavenge ratio to generate the first modified scavenge ratio.2. The system of claim 1 , wherein the oil pump control module sets a first duty cycle of a first solenoid associated with the first scavenge oil pump based on the first modified scavenge ratio.3. The system of claim 1 , wherein the vehicle orientation corresponds to at least one of pitch and yaw of the vehicle.4. The system of claim 1 , wherein the first draw location corresponds to a location in an oil pan.5. The system of claim 1 , wherein the oil pump control module determines the first scavenge ratio multiplier using a scavenge ratio multiplier map.6. The system of claim 1 , wherein the oil pump control module determines the first scavenge ratio based on engine speed claim 1 , engine oil temperature claim 1 , and engine load.7. The system of ...

Oil pump and power transmitting device equipped with the same

A driven sprocket of a chain driving mechanism is fixed to a rotation shaft between a front pump cover and a converter housing, and the rotation shaft is supported by a first supporting hole of the front pump cover and a second supporting hole of a rear pump cover. The movement of the driven sprocket in such a direction that it approaches the converter housing is restricted by a case side projection formed on the converter housing, and the movement of the driven sprocket in such a direction that it separates from the converter housing is restricted by a cover side projection formed on a bottom surface of the second supporting hole.

Design and Method to Improve Downhole Motor Durability

Rotor and/or stator designs and methods thereof to improve progressive cavity motor or pump durability. In one or more implementations, the rotor may have a variable outer diameter or variable stiffness along an axial length thereof. The stator may similarly have a variable inner diameter or variable stiffness, which may compliment or diverge from the variable outer diameter or variable stiffness of the rotor. 1. A progressive cavity motor or pump , comprising:a stator with an internal axial bore therethrough, the internal axial bore having an inwardly facing surface with axial lobes arranged and designed to form a stator helical profile; anda rotor with an outer surface having axial lobes arranged and designed to form a rotor helical profile that is at least partially complimentary to the stator helical profile; the rotor being rotationally disposed within the internal axial bore of the stator; the axial lobes of the rotor numbering at least one less than the axial lobes of the stator to form a moving chamber between the rotor and stator; the rotor having a diameter that varies along an axial length thereof, the diameter of the rotor proximate an uphole end portion thereof being no greater than at a downhole end portion thereof.2. The progressive cavity motor or pump of wherein claim 1 ,the diameter of the rotor proximate the downhole end portion thereof is greater than at an uphole diameter.3. The progressive cavity motor or pump of wherein claim 1 ,the diameter of the rotor intermediate the uphole end portion and the downhole end portion is a minimum diameter.4. The progressive cavity motor or pump of claim 3 , wherein claim 3 ,rotor stiffness proximate the minimum diameter is less than elsewhere along the axial length of the rotor.5. The progressive cavity motor or pump of claim 1 , wherein claim 1 ,the rotor is constructed of the same materials at the uphole end portion as at the downhole end portion.6. The progressive cavity motor or pump of wherein claim 1 , ...

Adaptive self-sealing microfluidic gear pump

A microfluidic pumping system configured to prevent backflow from an outlet of the system toward an inlet of the system. The microfluidic pumping system comprising a gear housing that has an inlet and an outlet and that houses a drive gear, an idler gear and a drive shaft. The system further includes a front end plate that is coupled to a first surface of the gear housing and a rear end plate that is coupled to a second, different surface of the gear housing. Also coupled to the gear housing is a first and second Halbach magnet arrays that is disposed between the front end plate and the rear end plate. The first and second Halbach magnet arrays include one or more solenoids and the first Halbach magnet array is disposed proximate to the drive gear and the second Halbach magnet array is disposed proximate to the idler gear.

CARTRIDGE VANE PUMP AND PUMP DEVICE INCLUDING SAME

A cartridge vane pump includes: a side plate brought into contact with first end surfaces of the rotor and the cam ring; a cover brought into contact with second end surfaces of the rotor and the cam ring, the cover attached to the body; and an O-ring provided in an outer circumference of the side plate, the O-ring being configured to seal a gap between the outer circumference of the side plate and an inner circumference of the body. The side plate has: a first flange portion configured to restrict movement of the O-ring towards the rotor side; a second flange portion configured to restrict movement of the O-ring towards an opposite side from the rotor. The first flange portion is formed to be able to compress the O-ring with the body in an axial direction of the driving shaft. 1. A cartridge vane pump configured to be accommodated in a body in an attachable and detachable manner , the cartridge vane pump comprising:a rotor linked to a driving shaft, the rotor being configured to be rotationally driven;a plurality of vanes provided in the rotor so as to be able to reciprocate in a radial direction of the rotor;a cam ring having an inner circumference cam face with which the plurality of vanes are brought into sliding contact;a side member brought into contact with first end surfaces of the rotor and the cam ring;a cover member brought into contact with second end surfaces of the rotor and the cam ring, the cover member being configured to be attached to the body; anda sealing member provided in an outer circumference of the side member, the sealing member being configured to seal a gap between the outer circumference of the side member and an inner circumference of the body, wherein a first restricting portion configured to restrict movement of the sealing member towards the rotor side;', 'a second restricting portion configured to restrict movement of the sealing member towards an opposite side from the rotor; and', 'an accommodating space defined by the first ...

ELECTRIC PUMP SYSTEM AND METHOD

An electric pump system and method of operating the same involves pumping a fluid through a fluid passageway defined in a mechanical pump from a pump inlet to a hollow shaft of a motor, through the hollow shaft to an internal motor cavity defined by a housing of the motor, and through another fluid passageway defined in the motor housing and mechanical pump that leads to a pump outlet. The system and method further involve pumping the fluid through another fluid passageway defined in the mechanical pump from yet another pump inlet to the pump outlet. The temperature of fluid exiting the hollow shaft can be assessed and used by an electronic control unit (ECU) of the electric pump system to control the same. The electric pump system can be part of a cooling and lubrication system for an electric vehicle transmission, gearbox, differential or transfer case, for example. 1. An apparatus comprising: a stator;', 'a rotor comprising a shaft; and', 'a housing around the stator and rotor and defining an internal motor cavity and a bypass inlet in fluid communication with the internal motor cavity;, 'a motor having a first side and a second side, the motor includingan electronic control unit connected to the first side of the motor;a mechanical pump connected to the second side of the motor and defining a first fluid passageway from a first pump inlet to a pump outlet; andwherein the motor housing and mechanical pump further defining a second fluid passageway from the internal motor cavity to the pump outlet via a second pump inlet.2. The apparatus of claim 1 , wherein the electronic control unit further comprises a thermistor.3. The apparatus of claim 1 , wherein the shaft is a hollow shaft that defines a shaft inlet and a shaft outlet claim 1 , wherein the mechanical pump defines a third fluid passageway from a third pump inlet to the shaft inlet claim 1 , and wherein the shaft outlet is in fluid communication with the internal motor cavity.4. The apparatus of claim 3 , ...

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 ...

Drive device

In a drive device, a housing includes an outer lid that covers one side in an axial direction of a motor shaft. A pump includes an external gear fixed to an end on one side in the axial direction of the motor shaft, an internal gear surrounding a radial outside of the external gear and meshing with the external gear, a pump room recessed from a surface on the other side in the axial direction of an outer lid toward one side in the axial direction, the pump room accommodating the internal gear and the external gear, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The motor shaft includes a motor shaft body to which a rotor core is fixed and a closer fixed to the motor shaft body to overlap the internal gear, and close at least a portion of the opening on the other side in the axial direction of the pump room.

METHOD AND KIT FOR GEROTOR REPAIR

An improved repair method and repair kit for gerotor pumps that have become damaged or worn in order to allow the pump to create a sound seal once more. 1. A method for improving gerotor performance comprising:inserting a wear plate within a gerotor assembly;providing a front cover piece which is placed overtop the gerotor; andperforming the above steps without removing a front cover of an engine.2. The method of claim 1 , wherein the wear plate is added to a rear of a gerotor case.3. The method of claim 1 , wherein the wear plate is shaped to conform to a front cover bottom of the engine.4. The method of claim 1 , wherein the wear plate is inserted to engage a lower surface of the gerotor.5. The method of claim 1 , wherein an upper surface of the gerotor engages a lower face of the front cover piece.6. The method of claim 1 , wherein the front cover piece defines openings that correspond to receiving openings in the front cover of the engine.7. The method of claim 1 , wherein the front cover piece has a lower face sized to accommodate a thickness of the wear plate.8. The method of claim 7 , wherein the lower face includes a channel or grove sized to offset the thickness of the wear plate.9. The method of claim 1 , wherein the method is performed without replacing gaskets or adding spacers to the gerotor assembly.10. A method for repairing an existing gerotor assembly in a vehicle comprising:removing a fan shroud, belt, fan clutch, and fan assembly from an engine;removing a harmonic balancer from the engine;removing a gerotor oil pump cover;removing a gerotor;removing a crankshaft seal wear ring;installing a gerotor wear plate;reinstalling the crankshaft seal wear ring;reinstalling the gerotor;installing a front cover piece that accommodates the wear plate;reinstalling the harmonic balance; andreinstalling the fan shroud, belt, fan clutch, and fan assembly.11. The method of wherein the gerotor assembly is repaired without removing an engine front cover.12. The ...

Internal Gear Pump

The disclosure relates to an internal gear pump as a hydraulic pump for a slip-controlled vehicle brake system. The disclosure proposes to configure the internal gear pump as a pre-assembled module with a cartridge as housing, which can be pressed into a receptacle of a hydraulic block of the vehicle brake system. The cartridge has two steps which are parallel to one another for attaching a press-in ram and for orienting the cartridge in an angularly correct manner by means of the press-in ram, and a sealing surface, with which the cartridge bears in a sealed manner in the receptacle of the hydraulic block when the cartridge is pressed into the receptacle. 1. An internal gear pump for a hydraulic vehicle brake system , comprising:a preassembled module including a cartridge configured as a housing, the cartridge having a shoulder for angularly correct alignment by positive engagement.2. The internal gear pump as claimed in claim 1 , further comprising:a drive wheel positioned on one end of the cartridge, a diameter of the drive wheel being smaller than a diameter of the cartridge, wherein the drive wheel does not overlap the shoulder for angularly correct alignment of the cartridge, when viewed axially.3. The internal gear pump as claimed in claim 1 , the cartridge having two parallel surfaces extending in secant directions as a shoulder for angularly correct alignment by positive engagement.4. The internal gear pump as claimed in claim 3 , the cartridge having two mutually opposite parallel steps which are axially parallel with respect to the cartridge claim 3 , the two mutually opposite parallel steps being the two parallel surfaces of the shoulder for angularly correct alignment of the cartridge by positive engagement claim 3 , the two mutually opposite parallel steps further having radial surfaces situated in a radial plane of the cartridge and configured to press the cartridge into a socket.5. The internal gear pump as claimed in claim 1 , further comprising a ...

PUMP

A pump has a suction region, a pressure region, and a pressure space which has an outflow region. A rotor is connected to a shaft in which rotor delivery elements are displacably received. The rotor has expelling regions connected to the pressure region by way of a first fluid path. A cold starting device is prestressed into a first functional position to shutoff a second fluid path from the pressure region to the pressure space, and is configured to be displaced counter to the prestress into a second functional position to open the second fluid path. The cold starting device is arranged in its second functional position at least in regions with a relief face which faces away from the pressure region in a relief receptacle. The relief face is loaded during operation of the pump with a pressure being smaller than a system pressure in the outflow region. 1. A pump comprising:at least one suction region and at least one pressure region;a pressure space which has an outflow region to a consumer;a rotor which is operatively connected to a shaft which rotates about a rotational axis, in which rotor delivery elements are received displaceably, as viewed in the radial direction;the rotor having expelling regions radially within the delivery elements, which expelling regions are connected at least partially to the pressure region by way of a first fluid path; anda cold starting device which comprises a cold starting element which is prestressed into a first functional position and, in its first functional position, shuts off a second fluid path from the pressure region to the pressure space, the cold starting element opening the second fluid path in a second functional position, the cold starting element being configured and arranged in such a way that it can be displaced counter to the prestress into its second functional position by way of a pump pressure which is generated in the pressure region during operation of the pump;wherein the cold starting element is arranged in ...

Sealing Element for Rotary Compressor

A sealing assembly for use in a rotary compressor having a housing and a rotor. The sealing assembly includes a sealing element and a spring positioned circumferentially around the sealing element. The sealing assembly is positioned in a slot formed in the housing, with at least one surface of the sealing element being beveled, and a cooperating mating surface of the slot being beveled. The force of the spring against the sealing element causes the sealing element to be forced into contact with at least one surface of the rotor (such as an inner surface of a rotor end plate). Alternatively, a sealing element can be provided that has elastic properties, the forces of which cause the sealing element to be forced into contact with the rotor. 1. A rotary compressor , comprising:a housing defining an internal cavity having an inner wall surface, wherein the housing has a housing longitudinal axis extending transverse to a housing plane that bisects the inner wall surface and wherein the housing further comprises a first sealing assembly;a rotor having a peripheral surface and being positioned within the internal cavity of the housing, the rotor configured to rotate about a rotor axis of rotation eccentric to the housing longitudinal axis, wherein the rotor has a first side surface and an opposed second side surface, and wherein the rotor further comprises a pair of end plates that are mounted to and rotate therewith the respective first and second side surfaces of the rotor; anda gate having a distal end, the gate being slidably mounted therewith the rotor and movable axially about and between a first position, in which the distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor, wherein the distal end of the gate is constrained to be spaced proximate from the inner wall surface of the housing as ...

Hydraulic Pump

A hydraulic pump is described comprising a rotor provided for rotation about a longitudinal axis (X-X) within a housing. The pump comprises a plurality of chambers for pumping a fluid that are provided by longitudinally extending recesses in a circumferential outer surface of the rotor. During use the recesses are moved across a circumferential inner surface of the housing, and in so doing, are moved over an inlet port in the housing to draw fluid into the chamber and then over an outlet port in the housing to discharge the fluid. The hydraulic pump further comprises a roller that is mounted in a longitudinally extending pocket of the housing. The roller is positioned after the outlet port in a direction of the rotor's rotation and is arranged to follow the outer surface of the rotor and seal against each recess as it is drawn past the roller, thereby directing fluid from the chamber into the outlet port. 1. A hydraulic pump comprising a rotor provided for rotation about a longitudinal axis within a housing , the pump comprising:a plurality of chambers for pumping a fluid, the chambers being provided by longitudinally extending recesses in a circumferential outer surface of the rotor, the recesses being moved across a circumferential inner surface of the housing during rotation of the rotor, and in so doing, being moved over an inlet port in the housing to draw fluid into the chamber and then over an outlet port in the housing to discharge the fluid, whereinthe hydraulic pump further comprises a roller that is mounted in a longitudinally extending pocket of the housing, the roller being positioned after the outlet port in a direction of the rotor's rotation, the roller further being arranged to follow the outer surface of the rotor and seal against each recess as it is drawn past the roller, thereby directing fluid from the chamber into the outlet port.2. The hydraulic pump according to wherein the rotor comprises:a plurality of magnets which are able to generate a ...

Turbine engine provided with a lubrication unit

A turbine engine includes two rotary shafts and a lubrication unit. The lubrication unit has at least one pump which a casing inside of which a rotor is mounted and driven by one of the rotary shafts. The pump casing is rotated by the other rotary shaft such that the actuation of the pump depends on the difference between rotational speeds of the shafts. The shafts are a drive shaft and a fan shaft, respectively, wherein the fan shaft is driven by the drive shaft by means of a reduction gear which is lubricated by the lubrication unit. The reduction gear is annular and the pump passes axially therethrough.

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 ...

PUMPS

A pump is formed by a housing () having a fluid inlet () and a fluid outlet () and containing a rotor () forming with the housing () chambers () that, on rotation of the rotor () by a drive, convey fluid from the inlet () to the outlet () to pump the fluid. A seal assembly () is arranged between the outlet () and the inlet (). The seal assembly () includes a membrane () that contacts the rotor () and a flexible resilient spring member () that provides a force urging the membrane () against the rotor (). The spring member () thus, on rotation of the rotor (), moves radially relative to the axis of rotation of the rotor () and is arranged to provide a force on the rotor () via the membrane () that is constant and a minimum to maintain a seal between the rotor () and the seal () for a given outlet pressure of the pumped fluid. 1. A pump formed by a housing having a fluid inlet and a fluid outlet and containing a rotor forming with the housing chambers that , on rotation of the rotor , convey fluid from the inlet to the outlet to pump the fluid to the outlet at an outlet pressure , a seal assembly being arranged between the outlet and the inlet and , on rotation of the rotor , moving radially relative to the axis of rotation of the rotor to contact the rotor to prevent fluid passing from the outlet to the inlet in the direction of rotation of the rotor , the force applied by the seal assembly per unit distance of movement being constant (as herein defined) over the travel of the seal assembly to minimise the force applied by the seal assembly to the rotor for a given output pressure.2. A pump according to wherein said sealing force is generally constant along the axial length of the contact between the rotor and said seal.3. A pump according to wherein said sealing force is generally constant at all angular positions of the rotor4. A pump according to wherein the seal assembly includes a spring member of flexible resilient material claim 3 , the sealing member ...

PUMP WITH A RESILIENT SEAL

A pump comprises a housing, with an interior defining a rotor path, an inlet formed in the housing at a first position on said rotor path, an outlet formed in the housing at a second position on said rotor path spaced from said first position. A rotor is rotatable in the housing with a first surface that seals against the housing. A second surface is formed on said rotor circumferentially spaced from said first surface and forms a chamber that travels around said rotor path to convey fluid from the inlet to the outlet. A resilient seal formed with the housing is located on the rotor path to prevent fluid flow from said outlet to said inlet past the seal. A passage may be provided to supply fluid to an under surface of the seal at a pressure that acts to urge the seal against the rotor. 1. A pump comprising:a housing, the housing having an interior defining a rotor path;an inlet formed in the housing at a first position on said rotor path;an outlet formed in the housing at a second position on said rotor path spaced from said first position; at least one first surface formed on the rotor and sealing against said rotor path of the housing,', 'at least one second surface formed on said rotor circumferentially spaced from said at least one first surface and forming a chamber with the rotor path that travels around said rotor path on rotation of the rotor to convey fluid around the housing from the inlet to the outlet; and, 'a rotor rotatable in said housing,'} formed in one piece with the housing,', 'the seal and the housing comprising the same material,', 'the seal located on said rotor path and extending between the outlet and the inlet in the direction of rotation of said rotor, 'a resilient seal'}wherein the at least one first surface seals with, and resiliently deforms, the seal, as the rotor rotates around the rotor path within the housing to prevent fluid flow from said outlet to said inlet past the seal.2. A pump according to claim 1 , wherein the housing and ...

COMPACT STRUCTURE OF GEAR PUMP

A gear pump apparatus includes a gear pump and a sealing mechanism which includes an annular rubber member, an outer member, and an inner member. One of the outer member and a casing of the gear pump apparatus has a contact member located outside a portion of the outer member which contacts the gear pump in a radial direction of the gear pump. The contact member is placed to create a physical contact between the outer member and the casing to absorb a part of force by which the outer member is pressed against the gear pump. This results in a decrease in pressure acting on an area of contact between the outer member and the gear pump, which leads to a drop in resistance to sliding between the gear pump and the outer member, thus decreasing a loss of torque required for the pumping operation of the gear pump. 1. A gear pump apparatus comprising:a gear pump which includes an outer gear and an inner gear meshing with the outer gear so as to define a plurality of cavities, the outer and inner gears being rotated through a drive shaft to suck and discharge fluid in a pumping operation;a casing which has defined therein a chamber in which the gear pump is disposed;a sealing mechanism which is disposed between an outer wall of the casing and said gear pump, said sealing mechanism working to create a hermetical seal between a low-pressure region and a high-pressure region, the low-pressure region including a suction side of the gear pump into which the fluid is sucked and a peripheral region of the drive shaft, the high-pressure region including a discharge side from which the fluid is discharged, said sealing mechanism including an annular rubber member, an outer member, and an inner member, the annular rubber member surrounding the low-pressure region to create a hermetical seal between the low-pressure region and the high-pressure region, the outer member being placed in contact with one of axially opposed ends of the casing and one of axially opposed ends of the gear ...

Rotary vane pump for generating a vacuum

A rotary vane pump for generating a vacuum, having an electric drive with a motor stator and a motor rotor, wherein the motor stator and the motor rotor radially encompass the pump housing. The motor stator is non-rotatably disposed around or on the pump housing. The motor rotor is disposed on the side of the motor stator facing away from the pump housing, such that an overall housing is provided that accommodates the electric drive and the pump housing, and the overall housing has a housing floor and a housing shell, wherein the housing floor, together with the pump housing delimits the pump chamber.

FUEL PUMP

An outer gear and an inner gear expand and contract volume of pump chambers formed between both the gears, and rotate to suction fuel into the pump chambers and then discharge fuel from the pump chambers sequentially. The inner gear includes an insertion hole that is depressed along its axial direction. A joint member includes a main body portion that is fitted to a rotary shaft, a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween, and a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding portion. 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 eccentric from the outer gear in an eccentric direction to be engaged with the outer gear;a pump housing that rotatably accommodates the outer gear and the inner gear;an electric motor that includes a rotary shaft which is rotary-driven; anda joint member that connects together the inner gear and the rotary shaft, wherein:the outer gear and the inner gear expand and contract volume of a plurality of pump chambers formed between both the gears, and rotate to suction fuel into the plurality of pump chambers and then discharge fuel from the plurality of pump chambers sequentially;the inner gear includes an insertion hole that is depressed along its axial direction; and a main body portion that is fitted to the rotary shaft;', 'a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween; and', 'a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding ...

DOSING PUMP SYSTEM

A compact, modular dosing pump system that is capable of microdose and macrodose volume flow rates, reduces or eliminates the need for additional flow control components such as temperature and pressure sensors, and utilizes a wider operational flow range than existing systems while maintaining the level of accuracy and precision exhibited by conventional dosing pump systems is provided. The dosing pump utilizes a a control system to deliver a range of fluid volumes. The control system monitors the motor emf voltage, calculates the flow rate, and makes adjustments to the pump motor voltage to precisely maintain the desired flowrate. 1. A pump system comprising: an inlet port;', 'an inlet flow channel providing fluid communication from the inlet port to the pump input;', 'an output flow channel in fluid communication with the pump output;', 'a bypass flow orifice;', 'a bypass loop valve, wherein the output flow channel provides a fluid path from the pump output to the bypass loop valve and the bypass loop valve is disposed downstream from the bypass flow orifice;', 'a return channel disposed downstream from the bypass loop valve, wherein the return channel is connected to the inlet flow channel and forms a fluid pathway between the bypass loop valve and the inlet flow channel;', 'an outlet branch connected to the output flow channel upstream from the bypass flow orifice;', 'an outlet flow orifice;', 'an outlet branch valve, wherein the outlet branch provides a fluid pathway from the pump output to the outlet branch valve and the outlet branch valve is disposed downstream from the outlet flow orifice; and', 'an outlet port disposed downstream from the outlet branch valve., 'a fluid pump having an pump input and a pump output in fluid communication with a fluid flow circuit wherein said flow circuit comprises2. The pump system of wherein claim 1 , the outlet flow orifice is connected to the outlet branch valve.3. The pump system of wherein claim 1 , the bypass flow ...

PUMP WITH ROTOR HAVING ARCUATE SLOTS AND VANES

A pump includes a shaft to rotate about a longitudinal axis, a rotor, at least two arcuate slots extending continuously into and through the rotor, wherein each of the slots is curved along a longitudinal slot axis, and at least two arcuate vanes, each of the vanes being shaped to be slidably seated in one of the slots, each of the vanes being movable in the corresponding slot between an extended position with the external edge of the vane adjacent the interior sidewall of the housing, and a retracted position wherein the external edge of the vane does not extend beyond the cylindrical surface of the rotor. Each of the vanes is spaced from an adjacent vane about the rotor such that there is always at least one vane positioned between the fluid inlet and fluid outlet ports. 1. A rotary pump comprising:a shaft to rotate about a longitudinal axis;a rotor centrally secured to the shaft, the rotor having a body with spaced ends and a cylindrical surface extending between the spaced ends;a rotor disk secured to each end of the rotor and secured at a centre of the rotor disk to the shaft;a housing encasing the shaft, the rotor disks, and the rotor within an internal cavity, the housing having interior end walls and an interior sidewall, with fluid inlet and fluid outlet ports in the interior sidewall, a first section of the interior sidewall of the housing being cylindrical and curved with a constant radius over an angle of about approximately 180°, the first section being spaced a constant distance from confronting sections of the cylindrical surface of the rotor, and a second section of the interior sidewall of the housing extending between the extremities of the first section of the interior sidewall, the cylindrical surface of the rotor being proximal to the interior sidewall of the housing between the fluid inlet and fluid outlet ports about midway along the second section, the fluid inlet and fluid outlet ports being located in the second section of the interior ...

AUTOMOTIVE ELECTRICAL OIL PUMP

An automotive electrical oil pump includes an oil displacement pumping unit with a pump rotor which rotates in a pump chamber so as to pump a pressurized oil to an oil recipient, an electric driving motor which drives the pump rotor of the oil displacement pumping unit, an electrical connector plug which electrically connects the electric driving motor to a power source, and a fluid connector. The fluid connector includes a pump inlet which is fluidically connected to a chamber inlet, a pump outlet which is fluidically connected to a chamber outlet, a center front opening, and a ring front opening which is arranged coaxially to the center front opening. The center front opening and the ring front opening define the pump inlet and the pump outlet. 112-. (canceled)13. An automotive electrical oil pump comprising:an oil displacement pumping unit comprising a pump rotor which is configured to rotate in a pump chamber so as to pump a pressurized oil to an oil recipient;an electric driving motor configured to drive the pump rotor of the oil displacement pumping unit;an electrical connector plug configured to electrically connect the electric driving motor to a power source; and a pump inlet which is fluidically connected to a chamber inlet,', 'a pump outlet which is fluidically connected to a chamber outlet,', 'a center front opening, and', 'a ring front opening which is arranged coaxially to the center front opening,', 'wherein,', 'the center front opening and the ring front opening define the pump inlet and the pump outlet., 'a fluid connector comprising,'}14. The automotive electrical oil pump as recited in claim 13 , wherein claim 13 ,the fluid connector further comprises a first circular opening wall arranged coaxially to the center front opening, andthe first circular opening wall is configured to fluidically separate the center front opening and the ring front opening.15. The automotive electrical oil pump as recited in claim 13 , wherein claim 13 ,the fluid ...

VANE PUMP

The purpose of the present invention is to provide a vane pump that is able to prevent decrease of power transmission efficiency when the vane pump is used in combination with a device such as a transmission device, for example. Therefore, this vane pump () has a hollow shaft (), the hollow shaft () is configured such that a hollow portion thereof allows a rotation driving shaft (which is, for example, an input shaft of a transmission device as illustrated in , and, which also includes an input shaft which is inserted directly into the transmission device from a driving source without having a coupling interposed therebetween) of the driving source () to be inserted therethrough, and the hollow shaft () and the rotation driving shaft () are coupled by means of a mechanism (spline, key and key groove, etc.) for transmitting a torque but transmitting no thrust. 1. A vane pump comprising a hollow shaft , whereinthe hollow shaft is constructed such that a rotation driving shaft of a driving source can be inserted into a hollow portion; andthe hollow shaft and the rotation driving shaft are connected by a mechanism for transmitting a torque but transmitting no thrust.2. The vane pump according to claim 1 , whereina rotor is mounted on said hollow shaft.3. The vane pump according to claim 2 , whereinsaid hollow shaft and the rotor are mounted such that relative rotation is not possible and movement in an axial direction is limited by a wire ring; andthe wire ring is disposed in a mode across a shaft-side recess portion and a rotor-side stepped portion in a state where the shaft-side recess portion formed on said hollow shaft and the rotor-side stepped portion formed on the rotor are aligned.4. The vane pump according to claim 1 , whereina mechanical seal is provided on both end portions in the axial direction of said hollow shaft; anda circuit for allowing the mechanical seals on the both end portions to communicate is formed.5. The vane pump according to claim 1 , ...

Portable Fuel Pump

An illustrative embodiment of the present disclosure includes a pump having a rotor and a plurality of vanes. The rotor is attached to a motor that rotates it in first and second directions and is located in a cavity. The plurality of vanes are each pivotally coupled to the rotor so as the rotor rotates, the vanes selectively push fluid from an inlet port out through an outlet port. The plurality of vanes each have an end selected from the group consisting of a lobe, no lobe, and a rod located in the lobe. Each of the plurality of vanes also includes a pivot pin configured to fit in a corresponding receptacle located in the rotor so that each of the plurality of vanes is pivotable with respect to the rotor inside the cavity.

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.

Rotary Compressor Having Gate Axially Movable With Respect To Rotor

A rotary compressor having a housing and a rotor positioned within an internal cavity of the housing. The rotor being configured to rotate about a rotor axis of rotation eccentric to a housing longitudinal axis. A gate is also provided that is slidably mounted therewith the rotor and movable axially about and between a first position, in which a distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor. The distal end of the gate being constrained to be spaced proximate from the inner wall surface of the housing as the rotor rotates about the rotor axis of rotation. 1. A rotary compressor , comprising:a housing defining an internal cavity having an inner wall surface, wherein the internal cavity of the housing has a housing longitudinal axis extending transverse to a housing plane that bisects the inner wall surface;a rotor having a peripheral surface and being positioned within the internal cavity of the housing, the rotor configured to rotate about a rotor axis of rotation eccentric to the housing longitudinal axis, wherein the rotor has a first side surface and an opposed second side surface, and wherein the rotor further comprises a pair of end plates that rotate therewith the respective first and second side surfaces of the rotor; anda gate having a distal end, the gate being slidably mounted therewith the rotor and translates axially relative to the rotor about and between a first position, in which the distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor, wherein the distal end of the gate is constrained to be spaced proximate from the inner wall surface of the housing as the rotor rotates about the rotor ...

Mounting structure for electric oil pump

A mounting structure for electric oil pump is provided to allow the electric oil pump to be mounted without through a communication pipe. The electric oil pump includes a pump unit having an inscribed gear pump, and a motor unit disposed adjacent to the pump unit and having a sensorless brushless DC motor for rotating the inscribed gear pump. A transmission accommodates the electric oil pump and includes a transmission case having an oil pan. The electric oil pump is attached to the transmission case with at least a through hole for supplying working oil to the pump unit being submerged in the working oil reserved in the oil pan.

Pump For Conveying A Liquid, In Particular An Exhaust-Gas Cleaning Additive

A pump for conveying liquid includes a pump housing having an inlet, an outlet, an inner circumferential surface and a geometric axis. An eccentric in the housing is rotatable about the geometric axis relative to the housing. A deformable element is disposed between the inner circumferential housing surface and the eccentric. A delivery duct from the inlet to the outlet is formed by the deformable element and the inner circumferential housing surface. The deformable element is pressed against the housing by the eccentric in sections so that a displaceable seal of the duct and a closed pump volume in the duct are formed and are displaceable to convey the liquid along the duct from the inlet to the outlet by rotation of the eccentric. A receptacle, accommodating an edge region of the deformable element, is formed by the inner circumferential housing surface and a counter bracket. 110-. (canceled)11. A pump for delivering a liquid , the pump comprising:at least one pump housing having at least one inlet, at least one outlet, an inner circumferential surface and a geometric axis;an eccentric disposed within said at least one pump housing and rotatable relative to said at least one pump housing about said geometric axis;a deformable element disposed between said inner circumferential surface of said at least one pump housing and said eccentric, said deformable element having at least one edge region;a delivery duct formed from said at least one inlet to said at least one outlet by said deformable element and said inner circumferential surface of said at least one pump housing;said eccentric pressing said deformable element in sections against said at least one pump housing to form at least one displaceable seal of said delivery duct and at least one closed pump volume in said delivery duct;said at least one displaceable seal and said at least one closed pump volume being displaceable along said delivery duct from said at least one inlet to said at least one outlet by a ...

AUTOMOTIVE ELECTRICAL OIL PUMP

An automotive electrical oil pump which includes an oil displacement pumping unit with a pump rotor which rotates in a pump chamber to pump oil to an oil recipient, an electric driving motor which drives the pump rotor, an electrical connector plug which connects the electric driving motor to a power source, and a fluid connector. The fluid connector includes a pump inlet fluidically connected to a chamber inlet, a pump outlet fluidically connected to a chamber outlet, a first lateral circular ring opening which define the pump inlet or the pump outlet, and a second lateral circular ring opening or a circular front opening which defines the pump outlet or the pump inlet. The second lateral circular ring opening is provided separate from the first lateral circular ring opening. The pump outlet and the pump inlet are arranged coaxially to each other. 112-. (canceled)13. An automotive electrical oil pump comprising:an oil displacement pumping unit comprising a pump rotor which is configured to rotate in a pump chamber so as to pump a pressurized oil to an oil recipient;an electric driving motor configured to drive the pump rotor of the oil displacement pumping unit;an electrical connector plug configured to electrically connect the electric driving motor to a power source; and a pump inlet which is fluidically connected to a chamber inlet,', 'a pump outlet which is fluidically connected to a chamber outlet,', 'a first lateral circular ring opening which is configured to define the pump inlet or the pump outlet, and', 'a second lateral circular ring opening or a circular front opening which is configured to define the pump outlet or the pump inlet, the second lateral circular ring opening being provided separate from the first lateral circular ring opening,', 'wherein,', 'the pump outlet and the pump inlet are arranged coaxially to each other., 'a fluid connector comprising,'}141. The automotive electrical oil pump as recited in claim , wherein , the fluid connector is ...

OIL PUMP DRIVING DEVICE

An oil pump driving device of which the oil pump can be driven by either of an engine and an electric motor, and which is short in axial dimension. The oil pump driving device includes a first one-way clutch for transmitting motive power from the engine only in one direction, and a second one-way clutch for transmitting motive power from the electric motor only in the above one direction. The first one-way clutch is disposed within an opening formed in a partition wall of a transmission case. The oil pump includes a rotor having an inner peripheral portion defining a hollow space. The second one-way clutch is disposed inside of the inner peripheral portion of the rotor. 1. An oil pump driving device comprising:a single oil pump including a rotor configured to receive motive power;a first one-way clutch configured to transmit motive power from an engine only in one direction;a second one-way clutch configured to transmit motive power from an electric motor only in said one, direction; anda transmission case having a partition wall formed with an opening, wherein:the first one-way clutch is disposed within the opening of the transmission case;the rotor has an inner peripheral portion defining a hollow space;the second one-way clutch is disposed inside of the inner peripheral portion of the rotor; andthe transmission case is coupled to the oil pump.2. The oil pump driving device of claim 1 , wherein the first one-way clutch includes a sprocket configured to transmit the motive power from the engine.3. The oil pump driving device of claim 2 , wherein the first one-way clutch further includes a clutch outer ring disposed within the opening of the transmission case claim 2 , and the sprocket is integral with the clutch outer ring.4. The oil pump driving device of claim 1 , wherein the first one-way clutch further includes an output shaft disposed within the opening of the transmission case claim 1 , andthe oil pump further includes a shaft connected to the output shaft ...

Electric motor, pump device using electric motor, and stator

An electric motor, and the electric motor includes a stator core provided on a stator, a plurality of teeth provided on the stator core, a coil wound body attached to the tooth, an inner flange portion provided at an inner diameter side of a bobbin, a first engagement portion provided at one end side in a width direction of the inner flange portion, and a second engagement portion provided at the other end side in the width direction of the inner flange portion, the first engagement portion being provided to be located at an outer side in a diameter direction than the second engagement portion of the adjacent coil wound body in a moving direction, the second engagement portion being provided to be located at an outer side in a diameter direction than the first engagement portion of the adjacent coil wound body in a moving direction.

ROTARY COMBUSTION ENGINE ROTOR DEACTIVATION AND METHOD

A method and a Rotary Combustion Engine (RCE) suitable for deactivation of at least one rotor out of a plurality of rotors. The RCE includes at least a first shaft portion and a second shaft portion which are disposed in straight coextensive longitudinal axial alignment. Each shaft portion may support at least one rotor. The at least first shaft portion and second shaft portion are separated by a gap. A shaft coupling mechanism is operable to bridge the gap and couple the first shaft portion in engagement with the second shaft portion for rotation together. The shaft coupling mechanism is also operable to disengage the first shaft portion and the second shaft portion, and thereby deactivate the rotation of at least one rotor. 1. A Rotary Combustion Engine (RCE) suitable for deactivation of at least one rotor of a plurality of rotors , the RCE comprising:a shaft having at least a first shaft portion and a second shaft portion which are disposed in coextensive longitudinal coaxial alignment, and wherein each shaft portion supports at least one rotor;a gap which separates the first shaft portion and the second shaft portion; and engage the first shaft portion and the second shaft portion for rotation together, and', 'disengage one of the first shaft portion and the second shaft portion to deactivate rotation of the at least one rotor., 'a shaft coupling mechanism configured to2. The RCE of claim 1 , wherein engagement and disengagement of the shaft coupling mechanism is controlled by one of an engine control unit and a user.3. The RCE of claim 2 , wherein an actuator is configured to engage and to disengage the first shaft portion and the second shaft portion.4. The RCE of claim 3 , wherein:the first shaft portion and the second shaft portion have a hollow interior, andthe shaft coupling mechanism is configured for bidirectional longitudinal translation in the hollow interior.5. The RCE of claim 4 , wherein the shaft coupling mechanism is disposed for operation in one ...

SEALING METHOD FOR INSULATED CONDUCTORS IN ELECTRIC SUBMERSIBLE PUMP POTHEAD CONNECTORS

An electric submersible pumping system includes an electric motor and a motor lead cable. The motor lead cable includes a plurality of leads that each includes a conductor, an insulator and a sealing sleeve around the insulator. The sealing sleeve is constructed of metal in preferred embodiments. The electric submersible pumping system further includes a pothead connector attached to the electric motor and the motor lead cable. The pothead connector includes a sealing mechanism around the metal sleeve of each of the plurality of leads. 1. A motor lead cable configured for connection to a pothead connector , the motor lead cable comprising: a conductor;', 'an insulator; and', 'a sealing sleeve around the insulator; wherein the sealing sleeve is constructed of metal., 'a plurality of leads, wherein each of the plurality of leads comprises2. The motor lead cable of claim 1 , wherein the sealing sleeve is swaged into attachment with the insulator and wherein each of the plurality of leads is connected to a common sealing mechanism.3. The motor lead cable of claim 1 , wherein the sealing device is secured to the insulator with an adhesive.4. An electric submersible pumping system comprising:an electric motor; a conductor;', 'an insulator; and', 'a sealing sleeve around the insulator; wherein the sealing sleeve is constructed of metal; and, 'a motor lead cable, wherein the motor lead cable comprises a plurality of leads and wherein each of the plurality of leads comprisesa pothead connector attached to the electric motor and the motor lead cable, wherein the pothead connector comprises a sealing mechanism around the metal sleeve of each of the plurality of leads.5. The electric submersible pumping system of claim 4 , wherein the sealing sleeve is substantially inflexible.6. The electric submersible pumping system of claim 4 , wherein the sealing mechanism comprises:one or more seal grooves; andan O-ring seal in each of the one or more seal grooves, wherein each of the O- ...

Pump apparatus

A pump apparatus includes a motor that rotates a shaft, and a pump that is driven by the shaft, suctions an oil, and delivers the oil to the motor. The pump apparatus includes a first flow channel to suction an oil into the pump through a suction port provided in a pump cover using a negative pressure in the pump, a second flow channel to deliver an oil to the inside of the motor through a delivery port provided in a pump body using pressurization of the pump, a third flow channel provided between a stator and a rotor, a fourth flow channel provided between the stator and a housing, and a fifth flow channel to discharge an oil inside the motor through a discharge port provided in the housing.

Geared positive-displacement pump with self-compensating gear chamber

A positive-displacement pump ( 10 ) of the type comprising a driving gear ( 12 ) and a driven gear ( 14 ) perfectly coupled together and each mounted on a respective support shaft ( 16, 18 ). The driving gear ( 12 ) is operatively connected to a motor ( 20 ) to set the driven gear ( 14 ) in rotation and generate the pumping action on a fluid. The gears ( 12, 14 ) are contained in a chamber ( 40 ) provided with a closing plate ( 42 ). The support shafts ( 16, 18 ), the central body ( 38 ) of the pump ( 10 ), the chamber ( 40 ) that contains the gears ( 12, 14 ), the closing plate ( 42 ) of such a chamber ( 40 ), an inner magnet ( 36 ) and the base of the rear body ( 28 ) of the pump ( 10 ) are in turn housed inside a casing ( 30 ) of the pump ( 10 ).

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 ...

Screw compressor

Screw compressor with a compression chamber that is formed by a compression housing, in which a pair of meshed helical compressor rotors in the form of a screw are rotatably mounted and with a drive motor that is provided with a motor chamber formed by a motor housing, in which a motor shaft is rotatably mounted, and this motor shaft drives at least one of the aforementioned two compressor rotors, whereby the compression housing and the motor housing are connected directly together to form a compressor housing, whereby the motor chamber and the compression chamber are not sealed off from one another and whereby the rotor shafts of the compressor rotors, as well as the motor shaft, extend along axial directions that are oblique or transverse to the horizontal plane.

Pump System

A rotary pump may include a rotary cover and a rotary housing that may be engaged with one another during operation. A ring gear may be positioned within an internal portion of the rotary cover and rotary housing, and an inner gear may be positioned within a portion of the ring gear. The rotary pump may be configured with a pressure relief portion that may be in fluid communication with an outlet of the pump. The rotary pump may be configured such that pressurized fluid passing through the pressure relief portion is routed to an inlet of the rotary pump. 1. A rotary pump comprising: i. an outlet cavity formed in an interior of said rotary housing;', 'ii. an outlet in fluid communication with said outlet cavity;', 'iii. a pressure relief portion in fluid communication with said outlet cavity;', 'iv. a pressure relief discharge in fluid communication with said pressure relief portion;', 'v. a pressure relief cavity formed in an interior of said rotary housing, wherein said pressure relief cavity is in fluid communication with said pressure relief discharge;', 'vi. a return channel in fluid communication with said pressure relief cavity;', 'vii. an inlet in fluid communication with said return channel;, 'a. a rotary housing configured for selective engagement with an engine, said rotary housing comprisingb. a ring gear positioned in said interior of said rotary housing;c. an inner gear positioned within said ring gear; and,d. a rotary cover that is selectively engageable with said rotary housing so as to cover said interior of said rotary housing.2. The rotary pump according to wherein said rotary pump is further defined as being engaged with an internal combustion engine.3. The rotary pump according to wherein said rotary pump is further defined as receiving rotational energy from a crankshaft of said internal combustion engine.4. The rotary pump according to wherein said internal combustion engine is further defined as including a vacuum pump in fluid communication ...

ELECTRIC PUMP UNIT

An electric pump unit is provided that ensures capability for lubricating a plain bearing and in which a lubricating oil passage is formed with a simple structure. This pump unit includes: a pump in which a rotor placed in a pump chamber of a pump housing rotates; and an electric motor having a motor shaft coupled to the rotor. The motor shaft is rotatably supported by a cylindrical plain bearing disposed in the pump housing. An oil seal is provided on the opposite side to the pump chamber with the plain bearing between so as to be located between the pump housing and the motor shaft. Oil supply grooves are formed in an inner peripheral surface of the plain bearing so as to extend through the plain bearing in an axial direction. 1. An electric pump unit , comprising:a pump that sucks and discharges oil as a rotor placed in a pump chamber of a pump housing rotates while in sliding contact with wall surfaces at both axial ends of the pump chamber; andan electric motor that has a motor shaft coupled to the rotor and drives the pump; whereinthe motor shaft is rotatably supported by a cylindrical plain bearing disposed in the pump housing,a seal member is provided at a position on an opposite side to the pump chamber with the plain bearing between so as to be located between the pump housing and the motor shaft, andan oil supply groove is formed in an inner peripheral surface of the plain bearing so as to extend through the plain bearing in an axial direction.2. The electric pump unit according to claim 1 , whereina suction port through which the oil is sucked and a discharge port through which the oil is discharged are formed in the wall surfaces at the both axial ends of the pump chamber so as to be in a shape of an elongated hole that is longer in a circumferential direction, anda pair of the oil supply grooves are provided so as to be located on a straight line extending in a radial direction and being perpendicular to a straight line which connects a middle position ...

External Rotor Pump

An external rotor pump, in particular a hydraulic external rotor pump, has a first component which is configured as an outer rotor with a sliding surface which is arranged on the outer side thereof, and a second component which is configured as an opposing body and in which the outer rotor is mounted rotatably by way of the sliding surface thereof on an inner guide surface of the opposing body and is in mechanical contact with the inner guide surface. An inner rotor which is mounted such that it can be rotated eccentrically with respect to the outer rotor is provided. One of the rotors can be driven, in order to be set into a rotational movement, and the rotors are coupled to one another such that, when the drivable rotor is driven, the other rotor is likewise set into a rotational movement as a result, in order to convey fluid from a suction region to a pressure region of the external rotor pump. The sliding surface or the guide surface has a surface structure which has a load-bearing region and a non-load-bearing region which is depressed in contrast with the former. The result is that the non-load-bearing region is saved from contact between the guide surface and the sliding surface which is mounted thereon. 1. An external rotor pump , comprising:a first component which is constructed as an external rotor and which has a sliding face which is arranged on an outer side thereof;a second component which is constructed as a counter-rotation member and in which the external rotor is rotatably supported by way of the sliding face thereof on an inner guiding face of the counter-rotation member and is in mechanical contact therewith; andan internal rotor which is rotatably supported eccentrically relative to the external rotor;whereinone of the rotors is drivable in order to be caused to carry out a rotational movement and the rotors are coupled to each other such that, when the drivable rotor is driven, the other rotor is thereby also caused to carry out a rotational ...

VARIABLE DISPLACEMENT PUMP

A variable displacement pump includes: a pump constituting section; a movable member; a first control hydraulic chamber; a second control hydraulic chamber; a control mechanism arranged to be actuated by receiving a control hydraulic pressure which is the discharge pressure on a downstream side of the discharge portion, through a single control passage formed within the engine, and to control a supply and a discharge of the discharge pressure with respect to the second control hydraulic chamber; and a switching mechanism arranged to switch a connection and a disconnection between the control passage and the control mechanism. 1. A variable displacement pump comprising:a pump constituting section arranged to be driven and rotated by an engine, to vary volumes of a plurality of pump chambers, and thereby to discharge an oil sucked from a suction portion from a discharge portion;a movable member arranged to be moved to vary variation amounts of the volumes of the pump chambers;an urging mechanism provided with a set load, and arranged to urge the movable member in a direction in which the variation amounts of the volumes of the plurality of the pump chambers are increased;a first control hydraulic chamber arranged to receive a discharge pressure from the discharge portion, and thereby to act a force to the movable member in a direction in which the variation amounts of the volumes of the plurality of the pump chambers are decreased;a second control hydraulic chamber arranged to receive the discharge pressure from the discharge portion, and thereby to act a force to the movable member in a direction in which the variation amounts of the volumes of the plurality of the pump chambers are increased;a control mechanism arranged to be actuated by receiving a control hydraulic pressure which is the discharge pressure on a downstream side of the discharge portion, through a single control passage formed within the engine, and to control a supply and a discharge of the ...

Pump assembly having integrated controller and motor with internal active cooling

A pump assembly and a method for cooling the same are disclosed. The pump assembly includes a pump, a controller, and a driven electric motor. The pump and the electric motor are on opposing axial sides of the controller. The assembly also has a heat conductive plate positioned between the pump and the controller that conducts heat from the controller. A transfer passage is provided for receiving pressurized fluid output from the pump and to direct the fluid along and in contact with the heat conductive plate to conduct heat therefrom into the pressurized fluid. An outlet passage communicates with the assembly outlet to discharge the pressurized fluid.

PISTON COMPRESSOR AND METHOD IN WHICH SUCH A PISTON COMPRESSOR IS USED

A piston compressor, comprising at least one piston compressor element () that is provided with a housing () with a compression chamber () in which a piston () is arranged movably back and forth in an axial direction (X-X′) between an upper dead point and a lower dead point by means of a drive shaft () driven by a rotary motor (), and in which between this drive shaft () and the piston (), a kinematic transmission () is provided for the primary drive of the piston (), characterized in that the piston () is provided with a complementary drive () in the form of an electromagnetic linear drive. 13813105651020101025. A piston compressor , comprising at least one piston compressor element () that is provided with a housing () with a compression chamber () in which a piston () is arranged movably back and forth in an axial direction (X-X′) between an upper dead point and a lower dead point by means of a drive shaft () driven by a rotary motor () , and in which between this drive shaft () and the piston () , a kinematic transmission () is provided for the primary drive of the piston () , wherein the piston () is provided with a complementary drive () in the form of an electromagnetic linear drive.22510261310. The piston compressor according to claim 1 , wherein the complementary electromagnetic linear drive () comprises a direct electromagnetic drive of the piston () with one or several electrical coils () arranged around or along the compression chamber () claim 1 , which are capable of interacting inductively with the piston ().3109. The piston compressor according to claim 2 , wherein the piston () and/or the cylinder mantle () are provided with one or more magnets.42510293013263029. The piston compressor according to claim 1 , wherein the complementary electromagnetic linear drive () comprises an indirect electromagnetic drive of the piston () with a plunger () which is arranged movably back and forth in a linear guide or enclosure () or which extends parallel to the ...

ROTARY COMPRESSOR

A rotary compressor includes a cylinder with a vane slot and a suction port. A vane is slidably disposed in the vane slot. The suction port guides fluid to a compression chamber at one circumferential end of the vane slot. The suction port may be formed in a recessed manner in a radial direction such that at least an end of the suction port in contact with an inner circumferential surface of the cylinder forms a slot shape extending between opposite axial side surfaces of the cylinder. A circumferential length of the suction port is reduced from conventional suction ports as a result of the slot configuration, thereby advancing the compression start angle, and a partition wall portion between the suction port and the vane slot may have elasticity, thereby suppressing close contact between the vane and the vane slot. 1. A rotary compressor , comprising:a cylinder having an annular shape;at least two plate members provided on upper and lower axial side surfaces of the cylinder, respectively, and forming a compression chamber together with the cylinder;a rolling piston provided inside the compression chamber, the rolling piston being coupled to a rotation shaft; anda vane slidably disposed in a vane slot formed in the cylinder such that contact between the vane and an outer circumferential surface of the rolling piston divides the compression chamber into a suction chamber and a discharge chamber,wherein the cylinder comprises a suction port configured for guiding fluid to the compression chamber at one circumferential side of the vane slot, andthe suction port is recessed in a radial direction such that at least an end of the suction port in contact with an inner circumferential surface of the cylinder forms a slot shape extending between the upper and lower axial side surfaces of the cylinder.2. The rotary compressor of claim 1 , wherein the suction port is formed in a slot shape from an outer circumferential end to an inner circumferential end in contact with the ...

VANE PUMP SEAL

A seal tube assembly of a pump system is provided. The seal tube assembly includes a single seal tube having a first axial end sealably coupled to a first vane pump and a second axial end sealably coupled to a second vane pump. The single seal tube includes transverse contact surfaces at the first axial end and transverse contact surfaces at the second axial end. The single seal tube is formed to define a first seal tube cavity at the first axial end and a second seal tube cavity at the second axial end 1. A pump system , comprising:first and second vane pumps that are each rotatably disposed for respective operations about first and second axial lengths of a rotor,the first vane pump comprising a first body and a first flange extending from the first body,the second vane pump comprising a second body and a second flange extending from the second body, andthe first body, the first flange, the second body and the second flange cooperatively defining a first cavity and cooperatively defining a second cavity located between the first cavity and the rotor,the pump system further comprising a seal tube assembly which is sealably coupled to the first and second flanges to inhibit fluid flow between the first and second cavities.2. The pump system according to claim 1 , wherein:the first and second bodies are annularly disposed about the rotor,the first and second flanges are annularly disposed about the rotor, andthe first and second cavities are annularly defined about the rotor.3. The pump system according to claim 1 , wherein the seal tube assembly comprises a single seal tube having a first axial end sealably coupled to the first flange and a second axial end sealably coupled to the second flange and opposite the first axial end.4. The pump system according to claim 3 , wherein the single seal tube comprises transverse claim 3 , flange contacting surfaces at the first axial end and transverse claim 3 , flange contacting surfaces at the second axial end.5. The pump ...

MAGNETICALLY ENGAGED PUMP

A magnetically engaged pump includes a pump housing with a rotatable magnetic drive assembly, a cylindrical canister and a rotatable driven magnet assembly. This magnetic coupling is associated with a pump rotor and a laterally positioned gear wheel to define a gear pump. This magnetic coupling is alternatively associated with a pump rotor with an impeller to define a centrifugal pump. Either pump includes a stationary shaft to mount the driven magnet assembly and pump rotor. A rotatable carrier with bushings and thrust bushings coaxially supports the rotatable driven magnet assembly and pump rotor. 1. A magnetically engaged pump comprisinga pump housing including a shaft in the housing;a magnetic coupling in the pump housing including a rotatable magnetic drive, a rotatable driven magnet assembly inwardly of the rotatable magnetic drive and a cylindrical canister extending between the rotatable magnetic drive and the rotatable driven magnet assembly, the rotatable driven magnet assembly having a concentric cavity;a pump rotor rotatable with the rotatable driven magnet assembly and including an axial passage;an inner impeller wheel rotatable with the rotatable driven magnet assembly and axially removable through the pump rotor, the pump rotor including an annular impeller wheel having continuity of flow with the inner impeller wheel;a carrier including a bore rotatably disposed about the shaft and at least one plain bushing in the bore bearing on the shaft, the carrier being within the concentric cavity and fitting through the axial passage for removal from the pump with the pump rotor engaged with the rotatable driven magnet assembly and the rotatable driven magnet assembly magnetically engaged with the rotatable magnetic drive.2. The magnetically engaged pump of claim 1 , the rotatable carrier being axially removable through the pump rotor from the rotatable driven magnet assembly with the inner impeller wheel and the shaft.3. The magnetically engaged pump of ...

BRUSHED ELECTRIC MOTOR

Brushed electric motor (), comprising an outer case (), two brushes and further a rotor () having a first inner end () and a second outer end () which is inserted within the outer case (). 1101130313211102011101010. Brushed electric motor () comprising an outer case () , two brushes and also a rotor () having a first inner end () and a second outer end () which is inserted within said outer case () , said brushed electric motor () is in particular usable in environments with risk of fire or explosion or in presence of potentially explosive or flammable fluids , characterized by comprising at least one filler element () made with a polymer based material which is positioned internally to said outer case () of said brushed electric motor () , for minimize the free volume within said brushed electric motor () and for allow at the same time to maintain a high power and high performance characteristics of said brushed electric motor () , so minimizing the possibility of trigger of a burst or fire.2104011202540. Brushed electric motor () according to claim 1 , characterized in that it comprises a printed circuit board () which is inserted internally to said outer case () claim 1 , and wherein said at least one filler element () comprises a housing () for said printed circuit board () for prevent short circuits due to dusts produced by said two brushes.3104140402540413130. Brushed electric motor () according to claim 2 , characterized in that it comprises two brush holders () which are preferably mounted on said printed circuit board () and in particular which are integrated with said printed circuit board () claim 2 , and wherein said housing () for said printed circuit board () comprises two housings for enclose said two brush holders () and for at least partially enclose said two brushes for prevent the passage of conductive dusts in particular produced by rubbing of said two brushes on said first inner end () of said rotor ().4105011501010. Brushed electric motor () ...

High pressure 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 petroleum products and components, to and through pipelines. Such a technology can comprise a type of external gear pump that creates higher flow, resulting in higher pressures in the pipeline, to move the liquids, while providing for longer pump life, simpler and less maintenance, and fewer undesired conditions, with a smaller footprint, in a cost-effective system.

SCROLL COMPRESSOR

Scroll compressor includes a shaft rotatably supported to a casing; an eccentric bush having a recess part into which one end portion of the shaft is inserted, an eccentric part eccentric to the shaft, and a balance weight disposed at the opposite side of the eccentric part with respect to the recess part; an orbiting scroll for performing the orbiting motion in interlock with the eccentric part; and a fixed scroll for forming a compression chamber together with the orbiting scroll. The casing has an orbiting groove in which the eccentric bush performs the orbiting motion, a buffer member is interposed between the orbiting groove and the balance weight. Rotation clearance is formed between the recess part and the shaft. The buffer member is compressed between the balance weight and the orbiting groove before the recess part and the shaft contact each other by the rotation clearance. 1. A scroll compressor , comprising:a casing;a shaft rotatably supported to the casing;an eccentric bush having a recess part into which one end portion of the shaft is inserted, an eccentric part eccentric to the shaft, and a balance weight disposed at the opposite side of the eccentric part with respect to the recess part;an orbiting scroll for performing the orbiting motion in interlock with the eccentric part; anda fixed scroll for forming a compression chamber together with the orbiting scroll,wherein the casing is formed with an orbiting groove in which the eccentric bush can perform the orbiting motion,wherein a buffer member is interposed between the orbiting groove and the balance weight,wherein the rotation clearance is formed to be present between the inner circumferential surface of the recess part and the outer circumferential surface of the one end portion of the shaft, andwherein the buffer member is formed to be compressed between the outer circumferential surface of the balance weight and the inner circumferential surface of the orbiting groove before the inner ...

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 ...