ШТАНГОВЫЙ НАСОС С МАГНИТНЫМИ ЭЛЕМЕНТАМИ ДЛЯ ПРЕДОТВРАЩЕНИЯ ОБРАЗОВАНИЯ ГАЗОВЫХ ПРОБОК

Изобретение относится к области нефтяных скважинных насосов для выкачивания скважинного флюида. Скважинный насос содержит седло всасывающего клапана с всасывающим клапаном, установленное на нижнем конце цилиндра. Внутри цилиндра расположен плунжер, совершающий возвратно-поступательное движение в осевом направлении. На нижнем конце плунжера смонтировано седло нагнетательного клапана с нагнетательным клапаном. Нагнетательный клапан содержит головку, которая садится на седло нагнетательного клапана, когда последний находится в положении закрытия. Нагнетательный клапан содержит шток, простирающийся вниз от головки сквозь отверстие в седле нагнетательного клапана. Шток представляет собой постоянный магнит. Другой постоянный магнит расположен на цилиндре под подвижным магнитом. Полярности этих магнитов таковы, что их взаимодействие вызывает подъем нагнетательного клапана относительно своего седла в положение открытия по мере приближения плунжера к нижней точке рабочего хода. Предотвращается сохранение ...

ГИДРАВЛИЧЕСКОЕ УСТРОЙСТВО С МАГНИТНЫМИ ФИКСИРУЮЩИМИ КЛАПАНАМИ

Изобретение относится к области управления гидравлическими устройствами. Способ клапанного управления гидравлическим устройством (12), который включает в себя: прием сигнала, который находится в определенном соотношении с замещением жидкости объемной камеры устройства в сборе с замещением жидкости гидравлического устройства. Запорный шарик (96) разблокируется из магнитного полюса (70) первого фиксирующего клапана (52а), который имеет соединение по жидкой среде с объемной камерой (36) и впускным отверстием (14) для жидкости гидравлического устройства, когда замещение жидкости объемной камеры достигает первого значения. Запорный шарик разблокируется из магнитного полюса второго фиксирующего клапана (52b), который имеет соединение по жидкой среде с объемной камерой и выпускным отверстием (16) для жидкости гидравлического устройства, когда замещение жидкости объемной камеры достигает второго значения. Усовершенствуется процесс управления гидравлическим устройством. 3 н. и 12 з.п. ф-лы, 11 ил ...

РЕГУЛИРОВАНИЕ ВРЕМЕНИ ОТКРЫТИЯ КЛАПАНА С КУЛАЧКОВЫМ ПРИВОДОМ, ПОРШНЕВОЙ КОМПРЕССОР И СПОСОБ

Изобретение относится к клапанам с кулачковым приводом, применяемым в поршневых компрессорах. Содержит механизмы для изменения момента открытия клапана с кулачковым приводом и/или временного интервала, в течение которого указанный клапан находится в открытом состоянии в период цикла сжатия. Поршневой компрессор содержит корпус 910, содержащий камеру 922 сжатия. Кулачок имеет удлиненную часть, расположен внутри указанного корпуса и выполнен с возможностью вращения вокруг оси вращения с совершением одного оборота в процессе каждого цикла сжатия. Исполнительный элемент расположен внутри указанного корпуса и выполнен с возможностью восприятия линейного или углового перемещения благодаря удлиненной части кулачка. Клапан 932 расположен на пути потока текучей среды, проходящего по направлению к камере 922 сжатия или из указанной камеры, и выполнен с возможностью переключения в открытое положение посредством исполнительного элемента. Поршневой компрессор также содержит контроллер, выполненный с ...

ПОРШНЕВОЙ НАСОС

Изобретение относится к области насосостроения для применения преимущественно в медицинской технике. Поршневой насос 10 для перекачки текучей среды содержит по меньшей мере один цилиндр 11; 11' с поршнем 16; 16', перемещающийся 11; 11' с помощью привода. Каждый цилиндр 11; 11' имеет на торцевой поверхности установочный фланец 14; 15 по меньшей мере с одним отверстием 30; 31; 32; 33 цилиндра и камеру 23; 23' с переменным объемом между каждым поршнем 16; 16' и установочным фланцем 14; 15. Насос 10 имеет впускной порт 12 и выпускной порт 13 для подвода и вывода текучей среды. Поворачивающийся диск 20 клапана расположен на стороне установочного фланца 14; 15. Диск клапана опирается на соответствующий установочный фланец 14; 15. Впускной порт 12 и/или выпускной порт 13 прикреплен по меньшей мере к одному установочному фланцу 14; 15. Установочный фланец 14; 15 имеет по меньшей мере один проход 34; 35 в зоне впускного 12 и выпускного 13 портов, через который текучая среда проходит между впускным ...

ГИДРАВЛИЧЕСКИЙ МАСЛЯНЫЙ ЦИЛИНДР, ОТНОСЯЩЕЕСЯ К НЕМУ УСТРОЙСТВО, ГИДРАВЛИЧЕСКАЯ БУФЕРНАЯ СИСТЕМА, ЭКСКАВАТОР И АВТОБЕТОНОНАСОС

Цилиндр содержит буферную втулку, расположенную в буферной области поршневого штока и выполненную с возможностью перемещения скольжением в осевом направлении вдоль указанного поршневой штока. В полости цилиндра между отверстием для масла в штоковой полости и конечным положением торцевой поверхности поршня, расположенной в штоковой полости, во время перемещения поршня в направлении из цилиндра расположена уплотняющая штоковую полость торцевая поверхность, которая выполнена с возможностью блокирования буферной втулки и входа в контакт с первой торцевой поверхностью буферной втулки для формирования уплотняющей поверхности. По меньшей мере один дроссельный канал для масла расположен между буферной втулкой и поршневым штоком. В течение перемещения поршня в направлении из цилиндра от момента времени, в который первая торцевая поверхность буферной втулки входит в контакт с уплотняющей штоковую полость торцевой поверхностью и формирует с указанной поверхностью уплотняющую поверхность, до момента ...

НАСОС-ДОЗАТОР И ЕГО ПРИВОДНОЕ УСТРОЙСТВО

Изобретение относится к области насосостроения и может использоваться для дозирования жидкостей. Насос-дозатор содержит втулку (3) и корпус (2) насоса, установленный во втулке (3) с возможностью перемещения. В полости корпуса (2) установлен плунжер (1). В боковой стенке корпуса (2) насоса предусмотрен канал для прохождения потока, соединенный с указанной полостью. На втулке (3) насоса предусмотрены канал (9) для всасывания воздуха и канал (10) для нагнетания воздуха, отверстия канала (9) для всасывания воздуха и канала (10) для нагнетания воздуха, выходящие на внутреннюю стенку втулки (3). Они находятся на пути движения отверстия канала (11) для прохождения потока, выходящего на корпус (2) насоса. Упрощается конструкция и достигается высокая точность дозирования. 2 н. и 8 з.п. ф-лы, 9 ил.

ПОЛУГЕРМЕТИЧНЫЙ КОМПРЕССОР ХОЛОДИЛЬНОГО АГЕНТА

Изобретение относится к полугерметичному компрессору холодильного агрегата. Полугерметичный компрессор холодильного агента содержит поршневой компрессор и электродвигатель. Общий корпус имеет двигательный участок корпуса для электродвигателя и компрессорный участок корпуса для поршневого компрессора. Чтобы ведущий от всасывающего патрубка в общем корпусе к впускной камере поршневого компрессора находящийся со стороны всасывания тракт холодильного агента и ведущий от выпускной камеры поршневого компрессора к напорному патрубку на общем корпусе, находящийся с напорной стороны тракт холодильного агента, работал более эффективно, предлагается, что электродвигатель выполнен в виде синхронного двигателя, в роторе которого расположены постоянные магниты для синхронного режима работы электродвигателя и короткозамкнутая клетка для запуска электродвигателя в асинхронном режиме работы. Постоянные магниты простираются параллельно оси ротора и выполнены в виде пластинчатых тел, плоские стороны которых ...

СИСТЕМА БЕТОНОНАСОСА И СПОСОБ ЕГО ИСПОЛЬЗОВАНИЯ

Изобретение относится к системе бетононасоса и способу ее функционирования для обеспечения постоянного потока бетонного или цементного материала. Система содержит трапециевидные отрезное кольцо и очковую плиту в сочетании с приподнятыми переходными зонами сопряжения с плунжерами цилиндров гидравлического насоса и выпускным каналом для обеспечения того, что нагнетаемый бетонный материал не потеряет давление и не потечет обратно в бункер. Трапециевидное отрезное кольцо предназначено для полного блокирования трапециевидных отверстий очковой плиты при его плавных переходах между впускными отверстиями гидравлического насоса во время изменения циклов, создавая более равномерный выходной поток бетона, исключая обратный поток в бункер и гидравлический удар. Система управления предназначена для координации работы плунжеров цилиндров гидравлического насоса и отрезного кольца для поддержания давления на выходе шибера и поток материала на относительно постоянном уровне на протяжении всех частей цикла ...

УСТРОЙСТВО ДЛЯ СЕПАРАЦИИ КОНДЕНСАТА, ВХОДЯЩЕЕ В СОСТАВ КОМПРЕССОРНОЙ УСТАНОВКИ ДЛЯ ВЫРАБОТКИ СЖАТОГО ВОЗДУХА

... 1. Устройство для сепарации конденсата, которое входит в состав компрессорной установки для выработки сжатого воздуха и содержит корпус (1) сепаратора, имеющий впускной патрубок (4) со стороны компрессора и выпускной патрубок (6) для отвода обезвоженного сжатого воздуха, при этом на стороне дна корпуса (1) сепаратора предусмотрен дренажный клапан (7) для слива конденсата, скапливающегося в корпусе (1) сепаратора, через сливное отверстие (8) во внешнюю среду, и этот дренажный клапан выполнен в виде седельного клапана, имеющего пневматическое пилотное управление от электропневматического клапана (11) управления, отличающееся тем, что электропневматический клапан (11) управления дренажным клапаном (7) расположен за пределами корпуса (1) сепаратора и соединен через линию (10) передачи давления управления с присоединительным патрубком (12) дренажного клапана (7).2. Устройство по п. 1, отличающееся тем, что в качестве среды, подаваемой в электропневматический клапан (11) управления, служит сухой ...

НАСОС ДЛЯ ПОРОШКА ВЫСОКОЙ ПЛОТНОСТИ

НАСОС-ДОЗАТОР И ЕГО ПРИВОДНОЕ УСТРОЙСТВО

... 1. Насос-дозатор, содержащий втулку насоса, корпус насоса, установленный во втулке насоса с возможностью перемещения, плунжер, расположенный в полости корпуса насоса, отводное отверстие, расположенное на боковой стенке корпуса насоса и подсоединенное к полости, впускное отверстие для жидкости и выпускное отверстие для жидкости, расположенные на втулке насоса, причем впускное отверстие для жидкости и выпускное отверстие для жидкости, расположенные на внутренней стороне втулки насоса, находятся на пути перемещения отводного отверстия на корпусе насоса. ! 2. Насос-дозатор по п.1, отличающийся тем, что указанное отводное отверстие расположено в задней части указанного корпуса насоса. ! 3. Насос-дозатор по п.1, отличающийся тем, что на внутренней стороне указанной втулки насоса установлено уплотнительное кольцо, и что на внутренней стороне указанной втулки насоса установлена уплотнительная полоса. ! 4. Насос-дозатор по п.1, отличающийся тем, что между указанной внутренней стенкой указанной полости ...

ПРИВОДИМЫЙ В ДЕЙСТВИЕ ТЕКУЧЕЙ СРЕДОЙ ПОД ДАВЛЕНИЕМ ДВИГАТЕЛЬ С КАМЕРОЙ КОМПЕНСАЦИИ ДАВЛЕНИЯ

... 1. Приводимый в действие текучей средой двигатель, содержащий:(a) коллектор, имеющий первый канал для потока текучей среды и второй канал для потока текучей среды, при этом упомянутый коллектор содержит дугообразное уплотнение, образующее:(i) отверстие первого клапана, находящееся в гидравлической связи с упомянутым первым каналом для потока текучей среды,(ii) отверстие второго клапана, находящееся в гидравлической связи с упомянутым вторым каналом для потока текучей среды, и(iii) по меньшей мере одну поверхность уплотнения;(b) цилиндр, имеющий головку цилиндра, с возможностью поворачивания установленную на упомянутом коллекторе, при этом упомянутая головка цилиндра образует ответную поверхность, выполненную так, чтобы взаимодействовать с упомянутым дугообразным уплотнением, и упомянутая ответная поверхность имеет по меньшей мере одно отверстие; и(c) поршень, размещенный внутри упомянутого цилиндра так, что его можно выдвигать давлением текучей среды, подаваемой во внутреннее пространство ...

МИКРОНАСОС

... 1. Насос, включающий статор (8), ротор (6), содержащий осевое удлинение (14, 16), с возможностью перемещения и вращения установленный по меньшей мере частично в роторной камере (10) статора, и по меньшей мере первый и второй клапаны между входом и роторной камерой и, соответственно, между роторной камерой и выходом (12), которые открываются и закрываются как функция по меньшей мере углового смещения ротора, причем насос далее содержит взаимодействующие кулачковые элементы (42, 44) на роторе и статоре и механизм смещения, действующий на роторе для приложения силы на роторе в осевом направлении кулачкового элемента статора, причем кулачковые элементы (42, 44) имеют такую конфигурацию, что они разделены определенным осевым расстоянием h при угловом положении, когда оба клапана закрыты. ! 2. Насос по п.1, в котором ротор (6) имеет по меньшей мере первое и второе осевые удлинения (14, 16), имеющие различные диаметры, и первое и второе уплотнения (18, 20), закрепленные вокруг первого и второго ...

СИСТЕМА ПРОВЕРКИ РАБОЧЕГО СОСТОЯНИЯ КЛАПАНА АЛЬТЕРНАТИВНОГО КОМПРЕССОРА И СПОСОБ ПРОВЕРКИ РАБОЧЕГО СОСТОЯНИЯ КЛАПАНА АЛЬТЕРНАТИВНОГО КОМПРЕССОРА

СПОСОБ УПРАВЛЕНИЯ БЕТОНОНАСОСОМ ДЛЯ ВОЗОБНОВЛЕНИЯ ПОДАЧИ БЕТОННОЙ СМЕСИ И ДЛЯ ОБРАТНОГО ОТКАЧИВАНИЯ БЕТОННОЙ СМЕСИ ПОСЛЕ ОСТАНОВКИ

... 1. Способ управления бетононасосом для возобновления подачи бетонной смеси после остановки, включающий:качание S-образного распределительного клапана (17) в бункере (18) так, чтобы позволить первому концу S-образного распределительного клапана (17) покинуть первоначально присоединенный бетоноподающий цилиндр и присоединиться к другому бетоноподающему цилиндру, и затемизменение направлений движения главных гидроцилиндров относительно направлений перед остановкой так, чтобы начать подачу бетонной смеси в бетоновод с помощью другого бетоноподающего цилиндра.2. Способ по п.1, отличающийся тем, что перед шагом качания S-образного распределительного клапана (17) в бункере (18) способ дополнительно включает: сохранение S-образного распределительного клапана (17) неподвижным и изменение направлений движения главных гидроцилиндров для обратного откачивания бетонной смеси из бетоновода.3. Способ по п.1, отличающийся тем, что перед шагом качания S-образного распределительного клапана (17) в бункере ...

ПОРШНЕВОЙ НАСОС ДЛЯ ПОДАЧИ ВЯЗКИХ СРЕД

... 1. Многоцилиндровый насос (1) для вязких материалов типа бетона, содержащий по меньшей мере два питающих цилиндра (3, 5) для подачи вязкого материала из бункера (7) предварительного заполнения в подающую магистраль, снабженный клапаном-переключателем (9) для поочередного подключения питающих цилиндров к связанной с ним подающей магистрали, содержащим по меньшей мере два подвижных корпусных клапанных элемента (15, 17; 15′, 17′; 15″, 17″), в каждом из которых предусмотрен передающий отсек (15L, 17L), расположенный между каждым питающим цилиндром и подающей магистралью, присоединенной к коллектору (19) по ходу потока после питающих цилиндров, отличающийся тем, что клапан-переключатель (9) содержит по меньшей мере два поворотных золотника (15, 17; 15′, 17′; 15″, 17″), совершающих, по существу, вращательное движение, каждый из которых содержит прямолинейный передающий отсек (15L, 17L), обеспечивающий сообщение каждого из связанных с ними питающих цилиндров (3, 5) с подающей магистралью, а также ...

РЕГУЛИРОВАНИЕ ВРЕМЕНИ ОТКРЫТИЯ КЛАПАНА С КУЛАЧКОВЫМ ПРИВОДОМ, ПОРШНЕВОЙ КОМПРЕССОР И СПОСОБ

... 1. Поршневой компрессор (900), выполненный с возможностью совершения циклов сжатия текучей среды, содержащий:корпус (310, 810, 910), содержащий камеру (922) сжатия, внутри которой происходит сжатие текучей среды,кулачок (340, 440, 840), имеющий удлиненную часть, при этом кулачок расположен внутри указанного корпуса (310, 810) и выполнен с возможностью вращения вокруг оси (325, 425, 825) вращения с совершением оборота в процессе каждого цикла сжатия,исполнительный элемент (365, 865), расположенный внутри указанного корпуса (310, 810) и выполненный с возможностью восприятия линейного или углового перемещения благодаря указанной удлиненной части кулачка,клапан (932), расположенный на пути потока текучей среды, проходящего по направлению к камере (922) сжатия или из указанной камеры, и выполненный с возможностью переключения в открытое состояние посредством указанного исполнительного элемента (365, 865), иконтроллер (331, 831), выполненный с возможностью регулирования момента открытия клапана ...

ДBУXЦИЛИHДPOBЫЙ ПOPШHEBOЙ HACOC

Насос для перекачивания густой массы

... 1.НАСОС ДЛЯ ПЕРЕКАЧИВАНИЯ ГУСТОЙ МАССЫ, преимущественно бетона , по направляющей трубе, содержащий кожух, два впускных патрубка и один выпускной, закрепленные соответственно на противолежащих стенках кожуха, и сйонтирбванный на поворотном валу переводной патрубок , сообщенный с одной стороны с выпускным патрубком и установленный с возможностью поочередного сообщения с впускными патрубками, оси которых смещены относительно оси поворотнЪго вала, отличающийся тем, что, с целью повы- , шения надежности в работе и срока службы, расстояние от осей впускных патрубков до оси поворотного вала больше расстояния от оси выпускного патрубка до оси переводного пат- рубка, при этом поворотный вал установлен на двух подшипниках, один из которых смонтирован на внешней стенке кожуха со стороны выпускного патрубка и выполнен упорным, а другой - на внутренней стенке кожуха со стороны впускных патрубков. 2.Насос по п., отличающий с я тем, что поверхность переводного патрубка в поперечном сл сечении со стороны ...

HYDROSTATISCHE AXIALKOLBENMASCHINE

Kolbenpumpe mit kleinem Hub des Arbeitskolbens

VERFAHREN ZUM ZUFÜHREN VON FESTSTOFF

Vorrichtung zur Druckerhöhung eines Fluids mit einem Druckbegrenzungsventil

Die vorliegende Erfindung betrifft eine Vorrichtung zur Druckerhöhung eines Fluids mit einem Druckbegrenzungsventil sowie ein Verfahren zur Druckerhöhung eines Fluids.

HYDRAULISCHES ANTRIEBSSYSTEM FÜR KRYOPUMPE

Ein Antriebssystem (114) für eine Kryopumpe (110) wird bereitgestellt. Es umfasst ein Schiebergehäuse (150) mit einer Vielzahl von Ventilen (240), die darin um eine Pumpachse (118) herum angeordnet sind, sowie ein Stößelgehäuse (152) mit einer Vielzahl von Stößelbohrungen (200), wobei jede Stößelbohrung mit einem jeweiligen der Vielzahl von Ventilen (240) in Kommunikation steht. Ein Sammelhohlraum (220) sammelt Hydraulikfluid von den Stößelbohrungen. Ein Pumpenflansch (119) umfasst einen Fluideinlass (302) und einen Fluidauslass (304). Ein Einlassverteiler (305) leitet durch den Fluideinlass (302) empfangenes Hydraulikfluid an jedes der Vielzahl von Ventilen (240). Ein Auslassverteiler (332) leitet Hydraulikfluid von jedem der Ventile (240) und dem Sammelhohlraum (220) an den Fluidauslass (304).

Ventilvorrichtung und Verwendung einer solchen

Die Erfindung betrifft eine Ventilvorrichtung mit einem ein gesteuertes Öffnen oder Sperren eines Fluid-Strömungskanals (16) in einer Eingriffslage auf einem Ventilsitz (22) bewirkenden Ventilstößel (18), der als Reaktion auf eine Druckbeaufschlagung mit einem Druckfluid von einer Ausgangslage in die Eingriffslage verbringbar ist, wobei das Druckfluid durch elektromagnetisch angetriebene Pumpenmittel (24) in einen dem Ventilstößel zugeordneten Druckraum (44) so gefördert wird, dass die Druckbeaufschlagung zum Antreiben des Ventilstößels durch eine Mehrzahl von Pumphüben der einen Förderkolben (26), insbesondere Hubkolben, aufweisenden Pumpenmittel erfolgt.

Durchlaufsichere Kolbenpumpe

Kolbenpumpe, insbesondere zur Beförderung hochviskoser Medien, mit einem vorzugsweise zylindrischen Arbeitsraum (11; 111), in dem ein Pumpkolben (20; 120) läuft, und der eine Saugöffnung (13; 113) und eine Drucköffnung (12; 112) aufweist, die jeweils mittels einer steuerbaren Verschlussvorrichtung (60; 563) verschließbar sind, dadurch gekennzeichnet, dass die Verschlussvorrichtung als Schieberventil, insbesondere als Drehschieberventil, ausgebildet ist, dessen Steuerung mit der Bewegung der Pumpkolben gekoppelt ist.

Elektromagnetisch betätigbares Saugventil und Kraftstoff-Hochdruckpumpe

Die Erfindung betrifft ein elektromagnetisch ansteuerbares Saugventil (1) für eine Kraftstoff-Hochdruckpumpe (2), umfassend eine ringförmige Magnetspule (3) zur Einwirkung auf einen zwischen zwei Endanschlägen (4, 5) hubbeweglichen und mit einem Ventilstößel (6) koppelbaren Anker (7), der zumindest abschnittsweise in einer Ausnehmung (8) eines Ventilkörpers (9) aufgenommen ist, wobei der Ventilkörper (9) über eine Hülse (10) mit einem Polkern (11) verbunden ist, der einen der beiden Endanschläge (4, 5) ausbildet und dem Anker (7) an einem Arbeitsluftspalt (12) gegenüber liegt. Erfindungsgemäß weist die Hülse (10) außenumfangseitig zumindest im Bereich einer umlaufenden Schweißnaht (13), über welche die Hülse (10) mit dem Ventilkörper (9) und/oder dem Polkern (11) verbunden ist, eine Beschichtung (14) auf. Ferner betrifft die Erfindung eine Kraftstoff-Hochdruckpumpe (2) mit einem solchen Saugventil (1).

Multi-purpose piston pump

Published without abstract.

FLUIDARBEITSMASCHINE UND BETRIEBSVERFAHREN

Fluid e.g. hydraulic fluid, delivering piston pump for e.g. hydraulic braking system, has piston rod that is designed as drive rod and has ends, where one end is connected with linear motor and other end is connected with valve-control unit

The pump has a piston rod that is designed as a drive rod (4) and has two ends, where one end is connected with a linear motor (1) and the other end is connected with a valve-control unit (3). The drive rod is arranged such that it is axially movable through a pressure cylinder that is filled with fluid. A piston (9) is fixed between springs, is guided to the drive rod, and separates two pressure chambers (14, 15). The chambers are connection with the motor, a pressure line (18) and a suction line (19) of the control unit using respective hydraulic lines (16, 17).

Membranpumpe für den Transport von Flüssigkeiten

Eine Membranpumpe zum Fördern von Flüssigkeiten ist für einen Einsatz im Sterilbereich dadurch verbessert, daß sämtliche Flächen, die mit der zu fördernden Flüssigkeit in Berührung kommen, geneigt angeordnet sind. Ferner sind alle Übergänge von Flüssigkeit führenden Flächen stufenlose ausgelegt. Zum Leerlaufen der Membranpumpe werden die Sperrelemente der vorhandenen Rückschlagventile durch temporäre Erzeugung eines magnetischen Felds aus ihrem Lagersitz gehoben.

Method for increasing delivery volume flow from e.g. valve controlled axial piston pump to hydraulic motor, involves providing piston unit in full mode and another piston unit in partial mode during operation mode

The method involves providing cylinder piston units (4, 6) in a partial mode during an operation mode, where the piston units comprise an actively controllable suction valve (22). One of the piston units is provided in a full mode and the other piston unit in the partial mode during another operation mode, where number of the piston units in the partial mode during the former operation mode is equal to number of the piston units in the full mode during the latter operation mode. Delivery volume flow is increased in the partial mode by a phase angle controlling process.

Drehkolbenpumpe

Drehkolbenpumpe mit einem Gehäuse (10), einem Ringkolben (18) in Form eines Rohrabschnittes, der mit einer in dem Gehäuse (10) drehbaren Welle (22) drehfest verbunden und in einem zu der Welle (22) co-axialen Ringraum (28, 30) des Gehäuses drehbar und axial verschiebbar geführt ist, wobei die einander zugekehrten axialen Endflächen (26, 24) des Ringraumes (28, 30) und des Ringkolbens (18) als Wellenflächen mit achsparalleler Amplitude und mit mindestens einem Wellenberg und einem Wellental ausgebildet sind, und mit jeweils mindestens einem Einlass- und einem Auslasskanal, in dem Gehäuse (10) so ausgebildet sind, daß die ringraumseitige Einlaß- bzw. Auslaßöffnung (40, 56) innerhalb eines axialen Bereichs einer Ringraummantelfläche liegen, der durch den maximalen Abstand der einander zugewandten Endflächen (24, 26) bestimmt wird, dadurch gekennzeichnet, dass in der Wellenfläche (F) des Ringkolbens (18) im Bereich des Scheitelpunktes eines Wellenberges ein über die Wellenfläche (F) hinausragender ...

Kolbenvakuumpumpe

Eine Kolbenvakuumpumpe weist einen Zylinder (14) und einen Kolben (12) auf, der mit dem Zylinder (14) einen Kompressionsraum (28) bildet. Der Kolben (12) oszilliert in dem Zylinder (14) mit einem Kompressionshub und einem Saughub. In einer Seitenwand (16) des Zylinders (14) ist ein Gaseinlass (30) vorgesehen, wobei der Gaseinlass (30) zu Beginn des Saughubes von dem Kolben (12) verschlossen und am Ende des Saughubes offen ist. Ferner ist eine Ausgleichsleitung und ein Ventil vorgesehen, durch die während des Beginns des Saughubes Gas von dem Gaseinlass (30) in den Kompressuionsraum (28) fließt. Aufgabe war es, eine einfache Anordnung einer Ausgleichsleitung mit Ventil vorzusehen. Gemäß der Erfindung bildet im Wesentlichen der Kolben die Ausgleichsleitung und das Ventil. Hierdurch kann das Ventil im Bereich der Kolben-Stirnwand wirken, so dass der Totraum minimiert wird.

PUMPE ZUM FOERDERN VON BREIIGEN MASSEN, INSBESONDERE BETON UND MOERTEL

Schlammpumpe

Digital adjustable hydraulic radial piston engine has passive high pressure valve that is arranged between high pressure channels in circumferential direction, while high pressure channels are arranged between cylinder piston units

The hydraulic radial piston engine (1) has cylinder piston units (14) and high pressure channels (30,40) arranged between cylinder piston units. The active controllable low and high pressure valves (20,18) are assigned to respective cylinder piston units. The actively controllable high-pressure valve of respective cylinder piston unit is arranged between the respective cylinder piston unit and a first high pressure channel. A passive high pressure valve is arranged between the high pressure channels in circumferential direction.

Lavage-System mit einem Druckgasmotor sowie Verfahren zum Erzeugen eines Sprühstoßes

Die Erfindung betrifft einen Druckgasmotor (1) aufweisend einen Vibrationskörper (10), der mit einem durch den Druckgasmotor (1) geleiteten Druckgas in Schwingung versetzbar ist, und einen Kolben (12), der mit einem Rückstellelement (14) federnd gelagert ist, wobei der Vibrationskörper (10) und der Kolben (12) derart positioniert und gelagert sind, dass der Vibrationskörper (10) bei der Schwingung wiederholt auf den Kolben (12) trifft und diesen gegen das Rückstellelement (14) auslenkt, wobei der Kolben (12) von dem Rückstellelement (14) in eine Position überführbar ist, in der der Vibrationskörper (10) bei seiner Schwingung den Kolben (12) trifft, so dass der Vibrationskörper (10) bei der Schwingung wiederholt auf den Kolben (12) trifft, und wobei die Bewegung des Kolbens (12) als Antrieb des Druckgasmotors (1) nutzbar ist. Die Erfindung betrifft auch ein Lavage-System aufweisend zumindest einen solchen Druckgasmotor (1) sowie ein Verfahren zum Erzeugen einer periodischen Bewegung und ...

ZWEIZYLINDER-PUMPE MIT HYDROSTATISCH DICHTENDER S-ROHRWEICHE

Pumpenschieber aus verschleissfestem flächigem Material

Verfahren und Vorrichtung zum Fördern von Beton oder anderen Dickstoffen

A process and device are disclosed for feeding concrete and other thick materials from a container into a feeding pipe by means of two feeding cylinders that can be alternatively connected to the container or to the feeding pipe by a switching device. The feeding pistons of the feeding cylinder alternatively carry out a suction and a compression stroke. The average piston speed during the suction hub is at least temporarily higher than during the compression stroke. In order to achieve a continuous feeding flow, both feeding cylinders are at least temporarily separated from the container, short-circuited together and connected to the feeding line during the switching period tu of the switching device. One of the feeding pistons finishes its compression stroke in this condition and at the same time the other feeding piston starts its compression stroke. The corresponding feeding piston starts its suction stroke only when the short-circuit is again substantially cancelled and only the appropriate ...

KOLBENPUMPE

A piston pump, particularly a radial piston pump, has a plurality of cylinder-piston units (1, 2, 3, 4, 5) of which the pistons (6) are driven by a tappet sheave (7) and which transport a pressure medium by means of different inlet return valves (9) from a suction pipe (10) via different discharge return valves (11) to a pressure medium circuit. A plurality of pistons (6) may be pushed without any mechanical thrust mechanism by a simple control pressure against the tappet sheave (7). In order to obtain a transportation by the cylinder-piston units only when a consumer needs it, the closure springs (20) of the inlet return valves (9) are prestressed to a predetermined value. If the control pressure exceeds said predetermined value, the inlet return valves (9) are open, the pistons (6) are pushed against the tappet sheave (7) and the cylinder-piston units effect a transport. As various consumers do not temporarily need pressure medium, the cylinder-piston units have to effect a transportation ...

Two cylinder reciprocating concrete pump - has linkage lifting swivel pipe as it rotates to reduce wear on end of pipe

The pump has two parallel cylinders (1, 2). Their open ends are linked by curved outlet pipes (6) to an inlet hopper (16). There is a wear ring (10) at the end of each outlet pipe. A swivelling pipe (13) rotates about the axis of the discharge pipe (42) and connects each outlet pipe in turn to the discharge. When one outlet pipe is connected to the discharge the other is open to the hopper. The swivelling pipe is driven by a crank (26) from an hydraulic cylinder (19). The crank lifts the pipe off the wear rings as it swivels so as to reduce wear during the movement.

Zweizylinder-Kolbenpumpe

Die Erfindung betrifft eine hydraulisch angetriebene Zweizylinder-Kolbenpumpe (1) mit einem ersten Differentialzylinder (22) mit einer kolbenseitigen Kammer (51) und einer stangenseitigen Kammer (53), der einen ersten Förderkolben (4) über eine erste Kolbenstange (6) antreibt sowie mit einem zweiten Differentialzylinder (23) mit einer kolbenseitigen Kammer (52) und einer stangenseitigen Kammer (54), der einen zweiten Förderkolben (5) über eine zweite Kolbenstange (7) antreibt. Die Zweizylinder-Kolbenpumpe zeichnet sich insbesondere durch eine Umschalteinrichtung (14) aus, die durch Umschaltung des Hydraulikölflusses zu den Kammern (51, 52, 53, 54) der Differentialzylinder (22, 23) eine kolben- oder stangenseitige Betriebsart der Zweizylinder-Kolbenpumpe (1) einstellt, wobei die Umschalteinrichtung (14) an den Böden (48, 49) der kolbenseitigen Kammern (51, 52) der Differentialzylinder (22, 23) als Brücke bildende Verbindung zwischen den Differentialzylindern (22, 23) angeordnet ist. Ferner ...

ROHRWEICHE EINER DICKSTOFF, INSBESONDERE BETON FOERDERNDEN DOPPELKOLBENPUMPE

Elektromagnetisch betätigbares Saugventil und Kraftstoff-Hochdruckpumpe

Die Erfindung betrifft ein elektromagnetisch betätigbares Saugventil (1) für eine Kraftstoff-Hochdruckpumpe (2), umfassend eine ringförmige Magnetspule (3) zur Einwirkung auf einen hubbeweglichen Anker (4), der zumindest abschnittsweise in einem Ventilkörper (5) aufgenommen ist, wobei der Ventilkörper (5) einen Ringbund (6) aufweist, an dem ein ringförmiges Anschlagelement (7) abgestützt und zumindest abschnittsweise in den Ringbund (6) eingepresst ist. Erfindungsgemäß ist das Anschlagelement (7) im Bereich von ober-, unter- und/oder umfangseitig angeordneten Ausnehmungen (8) gezielt geschwächt und verformt, so dass das Anschlagelement (7) eine dem Anker (4) zugewandte unebene Anschlagfläche (9) ausbildet.Ferner betrifft die Erfindung eine Kraftstoff-Hochdruckpumpe (2) mit einem solchen Saugventil (1).

Fluessigkeitspumpe mit Steuerung durch einen von Exzantern, unrunden Scheiben o. dgl. angetriebenen Schieber, der konzentrisch zum Pumpenkolben angbeordnet ist

Kolbenpumpe

Brennstoffkolbenpumpe, insbesondere fuer OElfeuerungen

Pumpensystem fuer leichtfluechtige Fluessigkeiten

Betonpumpe mit einer unter Druck gesetzten Dichtung für ein Schwingrohr

SEIFENSPENDER.

Volumetrische Pumpe mit Durchflussförderung

Kontinuierlich fördernde Infusionspumpe

Fuel pumping device for motor vehicle heater, has pumping units which are operated parallely during supply operation, where part of pump units is formed with variable supply capacity for influencing volumetric flow of fluid to be supplied

The device has pumping units (16a, 16b), which are operated parallely during a supply operation. A part of the pump units is formed with variable supply capacity for influencing the volumetric flow of a fluid to be supplied. The pump units are selectively activated and deactivated. A control device (22) controls the supply of the fluid to the activated pump units by a clocked control signal.

Hydraulische Kolbenpumpe

Brennkraftmaschine

Eine Brennkraftmaschine wird durch einen Kleinkompressor so aufgeladen, dass nur ein Bruchteil der Ladung für einen Arbeitszyklus der Brennkraftmaschine vorverdichtet und über einen separaten Ladekanal (14) mit Hilfe eines von der Nockenwelle (2) gesteuerten kurzhubigen Ventils (nicht gezeichnet) nach Einlassschluss der Brennkraftmaschine so zugeführt wird, dass der Saug-/Ladetakt des Viertaktverfahrens ganz oder teilweise erhalten bleibt.

Connecting-rod piston compressor for use as two stroke diesel engine, has connecting-rod piston closing exhaust ports and opening inlet ports or opening exhaust ports and closing inlet ports or closing exhaust and inlet ports

The compressor has a compression chamber with a profile continuing in stroke direction of a connecting-rod piston (8), where the profile has a plane that is aligned perpendicular to rotational direction of a crank shaft (11). The plane has inlet ports and exhaust ports. The connecting-rod piston closes the exhaust ports and opens the inlet ports, or opens the exhaust ports and closes the inlet ports, or closes both the exhaust and inlet ports over its angular position and its movement towards the crank shaft.

Betonpumpe

HANDSPRITZPISTOLE ZUM VERSPRUEHEN VON FLUESSIGKEITEN, INSBESONDERE VON FARBEN

Improvements in or relating to liquid pumps

... 937,647. Reciprocating pumps. L. TYREE. Feb. 12, 1962, No. 5348/62. Class 102(1). A reciprocating pump comprises an intake chamber and inelt 32, a compression chamber 34 connected thereto by a passage 36, which is formed by a plunger 42 and sleeve 43 slidable therewith. The end 42V of the plunger and the lower aperture 43V in the sleeve 43 cooperates to form a valve which closes on the compression stroke. Towards the end of the compression stroke, a crosshead 28 contacts a sleeve 37 which is moved downwardly to close the inlet 32. On the return stroke, a locking sleeve 44 on the sleeve 43 is contacted by shoulders 42S on the piston rod 42 and at the end of this stroke, the sleeve 44 moves the sleeve 37 upwardly to uncover the port 32. A pivoted spring loaded lever 50, operated by a rack 37T and pinion 49, holds the sleeve 37 in position during each piston stroke. The intake port 32 may consist of a number of radially disposed ports which communicate with a manifold surrounding the cylinder ...

Improvements in and connected with Direct Acting Pumps.

... 28,983. Neukomm, E. Dec. 11. Valves, arrangement of ; combined suction and delivery valves.-An annular opening is formed between the cylinder end and the cylinder cover of a pump for the reception of a flexible ring valve. Fig. 8 shows the invention applied to a bucket pump in which the bucket valve is of a similar type. The cylinder cover b is held at a slight distance from the end of the cylinder a by distance-pieces f, and the elastic ring valve d seats upon bevelled surfaces e formed upon the end of the cylinder and cylinder cover respectively. Fig. 4 shows a piston pump fitted with inlet and outlet valves h, d of the same type, an intermediate plate i being introduced to separate the inlet and outlet passages, and to provide the lower seating of the suction valve. In a modification, two delivery valves are provided, a detachable ring being fitted at the end of the cylinder to form the additional valve port. The valve rings may be of square or rectangular section.

Improvements in or connected with Gas Compressors.

... 13,606. Webb, W. H., Brettell, W. G., and Adamson, A. J. June 12. Compressing in stages. -Relates to systems of compressing gases in which the gases enter the compression cylinder at two different pressures, and consists in the employment therein of a double acting compressor in which the high-pressure gas is admitted through ports opened by the piston towards the end of the stroke in both directions and at other times kept closed by the piston. The invention is illustrated in connexion with the known refrigerating-system in which the high-pressure gas passes back to the compressor 1 from the intermediate receiver 4, and the lowpressure gas from the evaporator 7. The compressor shown is of the kind having a long piston 15, liner 18, rings containing inlet and delivery valves 23, 25 respectively at each end of the cylinder, and plug cylinder covers 29, 30. The high-pressure gas enters the cylinder at the end of each stroke through a passage 22, an annular chamber 20, and ports 21.

MAGNETICALLY OPERATED PUMP

... 1350797 Reciprocating pumps J A SAPORTA 16 Sept 1971 [25 Sept 1970] 43115/71 Heading F1A A magnetically-actuated pump comprises either a bucket piston of non-magnetizable material with a bucket value E, Fig. 1, of magnetizable material, or a solid piston D 1 , Fig.7, of magnetizable material, energization of the actuating solenoids J causing reciprocating movement of the valve E and subsequent movement of the piston D in Fig. 1, and reciprocation of the piston D 1 in Fig. 7. The solenoid housing K is of magnetizable material and may extend partly or completely through the wall of the cylinder A at the lower end, Figs. 2 and 3 (not shown). Cylinder A is of non-magnetizable material. The Fig.7 pump is double acting, and the intensity, duration and frequency of the electrical pulses supplied to solenoids J 1 , J 2 are controlled by controller 5a. Piston D 1 has a rod extending from its upper end for engaging a seat R upstream of valve O to provide positive cut-off. In Fig. 3 (not shown), the ...

Improvements in or relating to reciprocating pumps

... 651,482. Reciprocating pumps. HUMPHREY'S RAILWAYS, Inc. Feb. 29, 1948, No. 6371. Convention date, July 11, 1945. [Class 102(i)] A reciprocating pump suitable for pumping fish carried in water comprises a piston 2 driven from a crankshaft 5 and a rotary valve 16 also driven from the same shaft. The valve is coaxially arranged in a housing 10 and is cylindrical in form and has a projecting stem 19; the inner surface of the valve forms a continuation of the cylinder surface. The valve has a port 17 co-operating with an inlet and outlet in the casing and the trailing edge 18 of the port is sharpened to shear any fish obstructing the opening when the valve closes.

PUMPING DEVICES

... 1383768 Reciprocating pumps TORKRET GmbH 28 Jan 1972 [29 Jan 1971] 4168/72 Heading F1A A twin cylinder pump for concrete has an S-shaped distributor 8 pivotably supported by a shaft 13 coaxial with its outlet 10 which is rotatably connected to a delivery conduit 11, the distributor 8 being oscillatable with shaft 13 to align its inlet 9 alternately with two cylinder openings in the bottom of a supply hopper 5, the piston of the cylinder opening not covered by inlet 9 performing its suction stroke. Replaceable wear rings 17 are provided at the cylinder openings, shaft 13 being axially adjustable by a nut (15), Fig. 2 (not shown) to take up wear. A hydraulic cylinder, Fig. 4 (not shown) actuates the distributor. In Figs. 5 and 6 (not shown) the distributor and its shaft. are mounted in a drum (20) rotatably connected between the hopper and pump cylinder assembly.

INJECTION PUMP FOR USE IN HOT CHAMBER TYPE DIE CAST MACHINES

... 1418283 Pistons and cylinders TOSHIBA KIKAI KK 11 Feb 1974 6042/74 Heading F2T [Also in Division F1] A pump 3, for injecting molten metal into a hot chamber-type die casting machine 14a, 14b, has a cylinder 5, e.g. of ceramic, of smaller coefficient of thermal expansion than a stationary ring 6c supporting the cylinder, contact surfaces between the cylinder, or rings 6a, 6b supporting the cylinder, and the stationary ring being arranged such that extensions of said contact surfaces intersect each other substantially at the neutral point of expansion of the cylinder, or the cylinder axis, which passes through said point. The pump body 3a and stationary ring 6c may be of cast iron. In Fig. 2, extensions of the contact surfaces between cylinder support rings 6a, 6b and stationary ring 6c intersect at the neutral point Q. Rings 6a, 6b may be of tungsten or molybdenum. Resilient seals 17, 18, 19 prevent access of molten metal from reservoir 1a to the contact surfaces. Molten metal enters the ...

Improvements in or relating to pumps

... 248,040. Lunge, E., and Courtaulds, Ltd. Nov. 20, 1924. Double-acting bucket pumps; buckets; pumps for viscous liquids; mountings.-In a pump for delivering fluid at a constant rate, of the kind comprising two reciprocating pumps in series, each piston having a period of delivery at a uniform rate and the uniform delivery periods successively overlapping, two hollow pistons 24, 25 with valves 26, 27 reciprocate side by side in pump cylinders 28, 29 and in cylindrical bores in a body 19, the pistons being guided solely by the body 19 and the cylinders taking their alignment solely from the pistons. The cylinders 28, 29 have respectively an inlet 30 and outlet 31 and the pistons 24, 25 are each reciprocated by means such as a feed screw or cam giving a delivery stroke having a period of uniform movement, during which the valve 26 or 27 is closed. The valves are actuated by means of arms on the valves engaging stops disposed in their path of travel. The device may be supported by pegs 32 on ...

Reciprocating fuel pump, particularly for oil-fired furnaces

... 1,144,142. Reciprocating pumps. W. EBERSP€CHER and H. EBERSP€CHER [trading as J. EBERSP€CHER] . Feb. 25, 1966 [March 13, 1965], No. 8487/66. Heading F1A. In an electromagnetically actuated pump the piston 3' is connected to an armature 4' and provided with grooves 3b' through which liquid flows from the inlet 1b' to an inlet chamber 6a' controlled by the piston head. The stroke of the piston is pre-set by adjusting the position of the outlet valve housing 8' which is either screwed into the housing or is slidable therein under the control of an axially acting manually actuated cam.

COMBINATION OF DISPLACEMENT PUMP OR PISTON PUMP AND DISPLACEMENT MOTOR OR PISTON MOTOR

DEVICE FOR DELIVERING METERED QUANTITIES OF A SOFT PLASTIC SUBSTANCE

... 1,269,722. Hydraulic reciprocating-piston pumps. BENZ & HILGERS G. m.b.H. July 7, 1969 [Aug. 21, 1968], No.34202/69. Heading F1A. A pump for a plastic substance stored in a container 7 has a cylinder 2 containing a stepped piston 3 and furnished with openings 6, 6a, which by partial rotation of the cylinder about its longitudinal axis are brought alternately into communication with the container and mouthpieces 11, 12 in register with containers 13, 14 that are to be filled. The openings are in their uppermost position (as shown) during each suction stroke and in their lowermost position during the discharge stroke. Mechanism 10 effects the partial rotation of the cylinder.

IMPROVEMENTS IN AND RELATING TO AIR COMPRESSORS

... 1284056 Reciprocating compressors M J BERLYN 22 April 1971 [8 Sept 1970] 10781/71 Heading F1N A reciprocating piston compressor has inlet ports 9 uncovered by the piston 5 when near bottom dead centre and an annular outlet valve 13 contacted by the piston when at top dead centre. The outlet valve 13 is loaded by springs 14 and cooperates with concentric seats 8, 15 on the cylinder and a guide member 11, respectively. The guide member 11 has a water injection nozzle 17 disposed therewithin, the nozzle being supplied with water by a pump 18 driven by a cam-shaft 3. The piston 5 may be provided with a recess 16 to accomodate the end of member 11, or the outlet valve and member 11 may be modified to allow a flat piston to be used.

Improvements in reciprocating pumps

... 589,462. Reciprocating pumps. NATHAN MANUFACTURING CO. March 20, 1945, No. 6959. Convention date, May 27, 1944. [Class 102 (i)] A reciprocating pump comprises a number of pistons 11 arranged'parallel to a shaft 20 having - a crank pin 24 with a throw equal to crank pins 29 formed in each piston. A plate 25 connects each crank pin\ so that rotation of the shaft 20 rotates all the pistons. Each crank 29 is formed with a pivot 30 that is connected by a link 31 to a pivot 32 attached to the casing and offset from the axis of the piston 11 so that the piston is reciprocated as it revolves. The position of the pivot 32 is adjustable to vary the stroke of the piston. The pump casing has an inlet 12 that is connected to a chamber 14 to which the cylinders are connected by ports 16; ports 17 lead to delivery outlets 18. The piston has an axial passage 15b connected by a transverse passage 15a to a vertical groove 15 in the surface that co-operates with the suction and outlet ports 15, 17.

Positive displacement apparatus for compressing and/or expanding a gas

PLUNGER PUMP

... 1457855 Forging machines EXPERIMENTAL NI INST KUZNECH-PRESSOV MASHINOSTR 6 Feb 1975 5156/75 Heading B3H [Also in Division F1] In a pneumatic forging machine comprising an actuating piston 73 driven by an electric motor via flywheel 81 and crank-shaft 75, and driving a piston 72 via air in cylinders 82, 83, under the control of valves 86, 87, dies 78, 79 being mounted on a ram 71 connected to piston 72 and an anvil 80, lubricating oil is supplied to the machine cylinders by a plunger pump 88 (see Division F1), which is actuated by the air pulses in actuating cylinder space Q. Oil is delivered to line 6, which communicates with lines 89, 90 through which air passes between cylinder spaces O and Q, the air entraining the oil to deliver it to the cylinders as a mist.

METHOD AND PISTON PUMP FOR OPERATION OF A HYDRAULIC SYSTEM

A POSITIVE PUMP, IN PARTICULAR, FOR FLUID FOODSTUFFS CONTAINING SOLID MATTER

A positive pump is disclosed which is designed for fluid foodstuffs containing solid matter, and has an inlet valve (2) and an outlet valve (5) provided with a respective first and second poppet (3, 6) reciprocated to open and close by way of a pulsed pressure supply that operates relative double acting pistons (8, 9) integral with the rear of the poppet stems; each poppet is provided with a cutting edge (11, 13) which registers exactly in the relative valve seat. ...

Improvements in reciprocating pumps and compressors

... 497,743. Compressors ; reciprocating pumps. BENNET, C. W. H. D. June 24. 1937, No. 17604. [Classes 8 (i) and 102 (i)] In a pump or compressor in which the piston or pistons are driven from cranks or eccentrics on a transverse driving shaft, the latter is of approximately the same diameter as the pistons and acts as the distributing valve. Fig. 6 shows a two-cylinder double-acting pump in which opposite cylinder ends are connected by passages 17 to form common suction and compression chambers. The pistons 5, 5a are driven by connecting-rods 7 from cranks or eccentrics on the driving shaft 9, which is formed with ports 18, 18a axially communicating with inlet and discharge passages, respectively. In a modification, Figs. 8 and 9, the cylinders are single-acting. The inlet passage 23 and the discharge passage 24 communicate by means of passages 17, 17a in the cylinder block with spaces 16, 16a in the shaft 9. The spaces 16, 16a are separated by an oblique wall 21 and communicate with the cylinders ...

Pumps

APPARATUS FOR CONVEYING MATERIALS IN PARTICULAR CONCRETE

Improvements in or relating to pumps

... 209,469. Fletcher, C. Oct. 7, 1922. Air vessels ; valveless pumps.-The plunger b is made hollow to serve as an air vessel. Ports f, e register respectively with inlet and delivery ports c, d at the ends of the suction and delivery stroke. An air vessel d<1> adjoins the delivery pipe d<2>. Several pumps may be arranged in series. According to the Provisional Specification the pump inlei may be controlled by a non-return valve, the cylinder may be made of a larger diameter than the plunger, and the plunger may work in a tubular part extending into the cylinder, the bottom end of the tubular part dipping into the liquid. Or the cylinder may be made with its upper part at right angles to the lower part, the plunger being in the lower part and serving to compress air through the liquid in the lower part of the pump.

Improvements in diaphragm pumps

Improvements in infinite step controlling device for compressors

... 926,214. Regulating compressors; reciprocating pumps. INGERSOLL-RAND CO. Feb. 14, 1961 [March 3, 1960], No. 5507/61. Classes 8(1) and 102(1). The inlet valve 18, Fig. 1, of a reciprocating compressor driven by a constant speed motor or engine 20 is held open during an infinitely variable portion of the compression stroke by a spring-returned hydraulically actuated unloader plunger 228, 236, Fig. 3, to which pressure oil is supplied by a rotatably mounted reciprocating plunger pump 24 driven by the engine and from which unloader plunger oil supply is interrupted thereby allowing seating of the inlet valve 18 which occurs when the degree of rotation of said plunger 128 is such that a helical groove 161, Fig. 8, therein registers with a spill port 170; said rotation being effected through a rack and pinion gear 42 driven by a diaphram motor, when the latter is subjected to a compressed air reservoir pressure below a predetermined level and transmitted through a pressure regulating valve 46 ...

Fluid working machines and methods

High pressure fuel pump

High pressure fuel pump

A high pressure fuel pump 10 having a pumping head 16 and a plunger 24 slidably adjusted in a bore 26. The plunger 24 is provided with a blind bore defining a chamber (50, Fig. 3) open in the head end of the plunger 24 and in fluid communication with the compression chamber 20, the end face of the plunger being limited to a peripheral annular face surrounding said opening, said bore further defining a peripheral cylindrical wall and a bottom face and a filler member 54 is arranged inside said chamber. The filler member 54 may be unfixed to the plunger and may be free to move inside the chamber (50, Fig. 3). The walls of the chamber may expand under pressure to allow for the movement of the filler member 54. The expanding plunger walls reduce the clearance between the plunger 24 and the bore 26, and prevent leakage of fuel around the plunger 24.

УСТРОЙСТВО ДЛЯ ПОДЪЕМА РОТОРА ТУРБОАГРЕГАТА

1. Устройство для подъема ротора турбоагрегата, включающее гидродомкрат, подъемные скобы, опоры, расположенные в районе нижних полувкладышей подшипников скольжения ротора, отжимные болты, нагнетательный насос гидродомкрата, связь нагнетательного насоса с цилиндром гидродомкрата, отличающееся тем, что гидродомкрат выполнен в виде компактного моноблока, включающего рабочий цилиндр и нагнетательный насос, установленный непосредственно в корпусе моноблока гидродомкрата, который связан с цилиндром гидродомкрата через отверстие в сферической уплотнительной линзе, выполненной из высоколегированной стали. 2. Устройство по п.1, отличающееся тем, что рабочее тело гидродомкрата поступает в рабочий цилиндр из масленки через отверстие в корпусе нагнетательного насоса и далее через линзовое уплотнение и отверстие в корпусе рабочего цилиндра гидродомкрата, при этом линзовое уплотнение выполняют из высокопрочной легированной стали. (19) RU (11) 26 822 (13) U1 (51) МПК F04B 7/02 (2000.01) F01D 1/10 (2000.01) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К СВИДЕТЕЛЬСТВУ (21), (22) Заявка: 2002124378/20 , 16.09.2002 (24) Дата начала отсчета срока действия патента: 16.09.2002 (46) Опубликовано: 20.12.2002 (72) Автор(ы): Никонов В.И., Морозов А.А., Примаченко С.Ф. (73) Патентообладатель(и): Акционерное общество открытого типа "Ленинградский Металлический завод" U 1 2 6 8 2 2 R U Ñòðàíèöà: 1 U 1 (57) Формула полезной модели 1. Устройство для подъема ротора турбоагрегата, включающее гидродомкрат, подъемные скобы, опоры, расположенные в районе нижних полувкладышей подшипников скольжения ротора, отжимные болты, нагнетательный насос гидродомкрата, связь нагнетательного насоса с цилиндром гидродомкрата, отличающееся тем, что гидродомкрат выполнен в виде компактного моноблока, включающего рабочий цилиндр и нагнетательный насос, установленный непосредственно в корпусе моноблока гидродомкрата, который связан с цилиндром гидродомкрата через отверстие в ...

ПОГРУЖНОЙ НАСОС НЕФТЕСКВАЖИНЫ

1. Погружной насос нефтескважины, содержащий корпус, верхний и нижний фланцы расположенные по концам корпуса, вал, закрепленный во фланцах по центру корпуса, размещенный на валу комплект лопастных рабочих колес и аппаратов направляющих, связанных с валом при помощи шпонок, привод для вращения вала, отличающийся тем, что рабочие колеса и аппараты направляющие выполнены из алюминиевого сплава и снабжены покрытием из AlO (корунда). 2. Погружной насос нефтескважины по п.1, отличающийся тем, что покрытие из AlO выполнено электроплавленным в электролите, в режиме микроплазменного оксидирования. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 39 652 (13) U1 (51) МПК F04B 7/00 (2000.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2004112326/20 , 21.04.2004 (24) Дата начала отсчета срока действия патента: 21.04.2004 (46) Опубликовано: 10.08.2004 (73) Патентообладатель(и): Караник Юрий Апполинарьевич (RU), Гольдман Олег Витальевич (RU) U 1 3 9 6 5 2 R U 2. Погружной насос нефтескважины по п.1, отличающийся тем, что покрытие из Al2O3 выполнено электроплавленным в электролите, в режиме микроплазменного оксидирования. Ñòðàíèöà: 1 U 1 Формула полезной модели 1. Погружной насос нефтескважины, содержащий корпус, верхний и нижний фланцы расположенные по концам корпуса, вал, закрепленный во фланцах по центру корпуса, размещенный на валу комплект лопастных рабочих колес и аппаратов направляющих, связанных с валом при помощи шпонок, привод для вращения вала, отличающийся тем, что рабочие колеса и аппараты направляющие выполнены из алюминиевого сплава и снабжены покрытием из Al 2O3 (корунда). 3 9 6 5 2 (54) ПОГРУЖНОЙ НАСОС НЕФТЕСКВАЖИНЫ R U Адрес для переписки: 630057, г.Новосибирск, ул. Энгельса, 23, кв.6, Ю.А. Каранику (72) Автор(ы): Караник Ю.А. (RU) , Гольдман О.В. (RU) U 1 U 1 3 9 6 5 2 3 9 6 5 2 R U R U Ñòðàíèöà: 2 RU 5 10 15 20 25 30 35 40 45 50 39 652 U1 Полезная модель относится к области ...

УСТАНОВКА ШТАНГОВОГО НЕФТЯНОГО НАСОСА

1. Установка штангового нефтяного насоса, содержащая насос, насосно-компрессорные трубы (НКТ), штанги, дополнительный цилиндр с проточным плунжером с образованием надплунжерной и подплунжерной полостей, связанных с затрубным пространством газоперепускными устройствами, снабженными клапанами, и рабочий манифольд, отличающаяся тем, что клапаны газоперепускных устройств выполнены с возможностью всасывания газа снизу, а рабочий манифольд оснащен обратным клапаном. 2. Установка штангового нефтяного насоса по п.1, отличающаяся тем, что клапаны газоперепускных устройств выполнены в основании муфты, соединенной с НКТ, и содержат всасывающий канал и запорный элемент, выполненный в виде шара, расположенного внутри всасывающего канала между штифтом и седлом. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 49 923 (13) U1 (51) МПК F04B 7/02 (2000.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2005121945/22 , 11.07.2005 (24) Дата начала отсчета срока действия патента: 11.07.2005 (45) Опубликовано: 10.12.2005 (73) Патентообладатель(и): Каплан Леонид Самуилович (RU) U 1 4 9 9 2 3 R U Ñòðàíèöà: 1 U 1 Формула полезной модели 1. Установка штангового нефтяного насоса, содержащая насос, насосно-компрессорные трубы (НКТ), штанги, дополнительный цилиндр с проточным плунжером с образованием надплунжерной и подплунжерной полостей, связанных с затрубным пространством газоперепускными устройствами, снабженными клапанами, и рабочий манифольд, отличающаяся тем, что клапаны газоперепускных устройств выполнены с возможностью всасывания газа снизу, а рабочий манифольд оснащен обратным клапаном. 2. Установка штангового нефтяного насоса по п.1, отличающаяся тем, что клапаны газоперепускных устройств выполнены в основании муфты, соединенной с НКТ, и содержат всасывающий канал и запорный элемент, выполненный в виде шара, расположенного внутри всасывающего канала между штифтом и седлом. 4 9 9 2 3 (54) УСТАНОВКА ...

КЛАПАННАЯ ГРУППА КРИВОШИПНОГО НАСОСА

Клапанная группа кривошипного насоса, содержащая седло с равнопроходным цилиндрическим отверстием и конически-расходящейся поверхностью сопряжения, клапан с конически-расходящейся поверхностью сопряжения и четырьмя узкими направляющими ребрами, крепежные детали уплотнения клапана и пружину, отличающаяся тем, что клапан выполнен заодно с направляющей втулкой, у которой выпускной уровень выпускных окон располагается от цилиндрически или конически-расходящейся поверхности сопряжения на расстоянии, равном наибольшей величине зависания клапана над седлом в момент нахождения плунжера (поршня) в мертвой точке, а выступание направляющей втулки над торцом седла равно или больше максимальной величины открытия клапана. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 50 263 (13) U1 (51) МПК F04B 7/00 (2000.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2005110600/22 , 11.04.2005 (24) Дата начала отсчета срока действия патента: 11.04.2005 (45) Опубликовано: 27.12.2005 (73) Патентообладатель(и): ООО "Уральский машиностроительный завод" (RU) R U Адрес для переписки: 620143, г.Екатеринбург, а/я 296 (72) Автор(ы): Горонович Л.Н. (RU) , Матвеев В.И. (RU) 5 0 2 6 3 R U Ñòðàíèöà: 1 U 1 Формула полезной модели Клапанная группа кривошипного насоса, содержащая седло с равнопроходным цилиндрическим отверстием и конически-расходящейся поверхностью сопряжения, клапан с конически-расходящейся поверхностью сопряжения и четырьмя узкими направляющими ребрами, крепежные детали уплотнения клапана и пружину, отличающаяся тем, что клапан выполнен заодно с направляющей втулкой, у которой выпускной уровень выпускных окон располагается от цилиндрически или конически-расходящейся поверхности сопряжения на расстоянии, равном наибольшей величине зависания клапана над седлом в момент нахождения плунжера (поршня) в мертвой точке, а выступание направляющей втулки над торцом седла равно или больше максимальной величины открытия ...

ГЕРМЕТИЧНЫЙ ПЛУНЖЕРНЫЙ НАСОС

1. Плунжерный насос, содержащий кронштейн, насосную головку с рабочей камерой, закрепленную на кронштейне и содержащую гильзу, плунжер, узел уплотнения плунжера, включающий элемент уплотнения и средство регулирования степени поджима элемента уплотнения, отличающийся тем, что он снабжен средством для сбора утечек дозируемой жидкости из рабочей камеры, содержащим герметичную камеру с эластичным элементом, расположенным в кронштейне, при этом средство регулирования степени поджима выполнено с возможностью регулирования с внешней стороны герметичной камеры. 2. Плунжерный насос по п.1, отличающийся тем, что кронштейн выполнен в виде корпуса. 3. Плунжерный насос по п.2, отличающийся тем, что корпус кронштейна выполнен цилиндрической формы. 4. Плунжерный насос по п.2, отличающийся тем, что эластичный элемент выполнен в виде сильфона, охватывающего плунжер, при этом сильфон герметично закреплен на корпусе кронштейна со стороны насосной головки и герметично соединен с плунжером с возможностью возвратно-поступательного перемещения сильфона вместе с плунжером, при этом полость герметичной камеры включает полость сильфона. 5. Плунжерный насос по п.2, отличающийся тем, что средство регулирования степени поджима выполнено с возможностью регулирования с внешней стороны корпуса кронштейна. 6. Плунжерный насос по п.2, отличающийся тем, что средство для сбора утечек содержит всасывающий и нагнетательный клапаны и каналы, выполненные в корпусе кронштейна и соединяющие полость герметичной камеры со всасывающим и нагнетательным клапанами. 7. Плунжерный насос по п.6, отличающийся тем, что нагнетательный клапан соединен с каналом трубкой, выполненной из прозрачного материала. 8. Плунжерный насос по п.2, в котором насосная головка снабжена всасывающим и нагнетательным клапанами, отличающийся тем, что средство для сбора утечек содержит канал, выполненный в корпусе кронштейна в нижней части герметичной камеры, и трубопровод, соединяющий указанный канал с патрубком всасывающего клапана ...

КЛАПАННЫЙ УЗЕЛ ПЛУНЖЕРНОГО НАСОСА ДЛЯ ОБСЛУЖИВАНИЯ СКВАЖИН

1. Клапанный узел плунжерного насоса для обслуживания скважин, включающий клапан с кольцевой канавкой под уплотнение и конической рабочей поверхностью, седло клапана с конической рабочей поверхностью, выполненной в головке седла, и кольцевое уплотнение, отличающийся тем, что площадь контакта между рабочей поверхностью седла и кольцевым уплотнением составляет 65-68% от общей площади поверхности контакта, при этом клапан выполнен из легированной стали, включающей хром, никель, причем содержание хрома от 1,3 до 1,7 мас.%, а содержание никеля от 3,9 до 4,4 мас.%, а седло клапана выполнено из легированной стали, включающей хром, никель, причем содержание хрома от 1,2 до 1,7 мас.%, а содержание никеля от 3,15 до 3,65 мас.%, кроме этого, кольцевое уплотнение выполнено из эластомерного материала, а в качестве эластомерного материала использован материал с высокими упругими свойствами, например Ecopur или Indeflex (Уникспур). 2. Клапанный узел плунжерного насоса по п.1, отличающийся тем, что коническая поверхность контакта между седлом и клапаном с уплотнением расположена под углом 25-28° к плоскости, перпендикулярной оси клапанного узла. 3. Клапанный узел плунжерного насоса по п.1, отличающийся тем, что отношение высоты головки седла к общей высоте головки и шапки клапана составляет не более 0,26. 4. Клапанный узел плунжерного насоса по п.1, отличающийся тем, что отношение наружного диаметра кольцевого уплотнения к посадочному диаметру находится в пределах от 1,30 до 1,35. И 1 106928 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ ВУ” 106 928” 44 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ ММ9К Досрочное прекращение действия патента из-за неуплаты в установленный срок пошлины за поддержание патента в силе Дата прекращения действия патента: 12.05.2019 Дата внесения записи в Государственный реестр: 22.06.2020 Дата публикации и номер бюллетеня: 22.06.2020 Бюл. №18 Стр.: 1 па 866901 ЕП

НАСОСНЫЙ АГРЕГАТ

1. Насосный агрегат, содержащий маслонаполненные электродвигатель, диафрагменный насос с механогидравлическим приводом диафрагмы и компенсаторное устройство, отличающийся тем, что электродвигатель выполнен гидравлически изолированным от механогидравлического привода диафрагмы, а компенсаторное устройство выполнено в виде автономных компенсаторных устройств каждого из них. 2. Насосный агрегат по п.1, отличающийся тем, что компенсаторное устройство электродвигателя выполнено в виде гидрозащиты последнего. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F04B 7/06 (11) (13) 113 311 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2011138791/06, 21.09.2011 (24) Дата начала отсчета срока действия патента: 21.09.2011 (72) Автор(ы): Каторгин Дмитрий Ильич (RU) (73) Патентообладатель(и): Общество с ограниченной ответственностью "Пермэнергокомплект" (RU) R U Приоритет(ы): (22) Дата подачи заявки: 21.09.2011 (45) Опубликовано: 10.02.2012 Бюл. № 4 R U 1 1 3 3 1 1 Формула полезной модели 1. Насосный агрегат, содержащий маслонаполненные электродвигатель, диафрагменный насос с механогидравлическим приводом диафрагмы и компенсаторное устройство, отличающийся тем, что электродвигатель выполнен гидравлически изолированным от механогидравлического привода диафрагмы, а компенсаторное устройство выполнено в виде автономных компенсаторных устройств каждого из них. 2. Насосный агрегат по п.1, отличающийся тем, что компенсаторное устройство электродвигателя выполнено в виде гидрозащиты последнего. Стр.: 1 U 1 U 1 (54) НАСОСНЫЙ АГРЕГАТ 1 1 3 3 1 1 Адрес для переписки: 614025, Пермский край, г. Пермь, ул. Пихтовая, 35, генеральному директору А.А. Кочурову U 1 U 1 1 1 3 3 1 1 1 1 3 3 1 1 R U R U Стр.: 2 RU 5 10 15 20 25 30 35 40 45 113 311 U1 Полезная модель относится к области насосостроения и может быть использована в погружных насосах для подъема пластовой жидкости из скважин. Известен насосный агрегат, содержащий ...

ПЛУНЖЕР ШТАНГОВОГО НАСОСА ДЛЯ ДОБЫЧИ НЕФТИ

Плунжер штангового насоса для добычи нефти, включающий плунжер с нагнетательным клапаном, цилиндр насоса со всасывающим клапаном, колонны штанг и насосно-компрессорных труб, отличающийся тем, что, с целью обеспечения сбора абразивного материала между уплотнительными манжетами, повышения надежности манжет от истирания и снижения коэффициента трения манжет о стенку цилиндра и плунжера, плунжер насоса выполнен ступенчатой формы, нижняя короткая часть которого выполнена диаметром, соответствующим размеру стандартного плунжера, в котором размещен нагнетательный клапан, а основная часть выполнена с меньшим диаметром, на внешней поверхности которой размещены чередующиеся уплотнительные манжеты с внешним диаметром, частично превышающим диаметр цилиндра насоса, с установленными между ними стальными шайбами, которые затягиваются втулкой, наворачиваемой на верхний конец плунжера, причем уплотнительные манжеты выполнены из материала «ФТОРОПЛАСТ-4» с химической формулой (CF2-CF2). РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F04B 7/00 (11) (13) 119 404 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2012116761/28, 24.04.2012 (24) Дата начала отсчета срока действия патента: 24.04.2012 (72) Автор(ы): Миннахмедов Мунавир Ахатович (RU), Абдуллин Нил Хамитович (RU) (73) Патентообладатель(и): Миннахмедов Мунавир Ахатович (RU) R U Приоритет(ы): (22) Дата подачи заявки: 24.04.2012 (45) Опубликовано: 20.08.2012 Бюл. № 23 1 1 9 4 0 4 R U Формула полезной модели Плунжер штангового насоса для добычи нефти, включающий плунжер с нагнетательным клапаном, цилиндр насоса со всасывающим клапаном, колонны штанг и насосно-компрессорных труб, отличающийся тем, что, с целью обеспечения сбора абразивного материала между уплотнительными манжетами, повышения надежности манжет от истирания и снижения коэффициента трения манжет о стенку цилиндра и плунжера, плунжер насоса выполнен ступенчатой формы, нижняя короткая часть которого ...

ПРИВОД ГЛУБИННОГО ШТАНГОВОГО НАСОСА

1. Привод глубинного штангового насоса, содержащий раму, в верхней части которой смонтирован силовой гидроцилиндр, расположенный вертикально с возможностью крепления устьевого штока, гидравлическую систему с насосной станцией, содержащей насос и асинхронный электродвигатель, систему управления приводом, снабженную двумя конечными выключателями движения штока силового гидроцилиндра, при этом силовой гидроцилиндр гидравлически соединен с насосной станцией, отличающийся тем, что система управления приводом содержит частотно-регулируемый электропривод с возможностью рекуперации энергии торможения в питающую сеть. 2. Привод по п.1, отличающийся тем, что система управления приводом содержит дополнительный рабочий бесконтактный выключатель движения штока силового гидроцилиндра, расположенный между двумя конечными выключателями движения штока силового гидроцилиндра. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F04B 7/02 (13) 121 529 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2012123205/28, 05.06.2012 (24) Дата начала отсчета срока действия патента: 05.06.2012 (73) Патентообладатель(и): Бодров Валерий Владимирович (RU) (45) Опубликовано: 27.10.2012 Бюл. № 30 R U Приоритет(ы): (22) Дата подачи заявки: 05.06.2012 (72) Автор(ы): Бодров Валерий Владимирович (RU), Багаутдинов Рамиль Мерсеитович (RU), Юминов Алексей Викторович (RU) Адрес для переписки: 454007, г.Челябинск, а/я 431/897, В.В. Бодрову U 1 1 2 1 5 2 9 R U Стр.: 1 U 1 Формула полезной модели 1. Привод глубинного штангового насоса, содержащий раму, в верхней части которой смонтирован силовой гидроцилиндр, расположенный вертикально с возможностью крепления устьевого штока, гидравлическую систему с насосной станцией, содержащей насос и асинхронный электродвигатель, систему управления приводом, снабженную двумя конечными выключателями движения штока силового гидроцилиндра, при этом силовой гидроцилиндр гидравлически соединен с насосной станцией, ...

РЕГУЛИРУЕМЫЙ ПЛУНЖЕРНЫЙ НАСОС

Регулируемый плунжерный насос, содержащий установленную на корпусе гильзу с входным и выходным каналами, в которой с возможностью возвратно-поступательного и вращательного движения установлен плунжер с лыской на его конце, отличающийся тем, что к противоположному концу плунжера шарнирно закреплен шатун, который другим концом шарнирно соединен с ротором, установленным на валу червячного колеса, имеющего зацепление с червяком, и образующего с червяком кинематическую пару редуктора, корпус которого установлен в корпус на шарнирных опорах, имеющих общую ось, и шарнирно соединен с сухарем, который соединен с регулировочным винтом, ввинченным в резьбовое отверстие корпуса, с возможностью преобразования прямолинейного движения регулировочного винта при его вращении в резьбовом отверстии корпуса во вращательное движение корпуса редуктора относительно оси его шарнирных опор. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F04B 7/06 (11) (13) 151 546 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014118265/06, 06.05.2014 (73) Патентообладатель(и): Общество с ограниченной ответственностью "МИРРИКО" (RU) 06.05.2014 Приоритет(ы): (22) Дата подачи заявки: 06.05.2014 1 5 1 5 4 6 R U Формула полезной модели Регулируемый плунжерный насос, содержащий установленную на корпусе гильзу с входным и выходным каналами, в которой с возможностью возвратно-поступательного и вращательного движения установлен плунжер с лыской на его конце, отличающийся тем, что к противоположному концу плунжера шарнирно закреплен шатун, который другим концом шарнирно соединен с ротором, установленным на валу червячного колеса, имеющего зацепление с червяком, и образующего с червяком кинематическую пару редуктора, корпус которого установлен в корпус на шарнирных опорах, имеющих общую ось, и шарнирно соединен с сухарем, который соединен с регулировочным винтом, ввинченным в резьбовое отверстие корпуса, с возможностью преобразования прямолинейного ...

ТУРБОАЭРОДИНАМИЧЕСКИЙ ВАКУУМНЫЙ НАСОС ЦЕНТРОБЕЖНОЙ СИЛЫ

Турбоаэродинамический вакуумный насос центробежной силы содержит вертикальный корпус с основанием, установленный по центру корпуса трубчатый вал с закрепленными на нем горизонтальными водонапорными трубами с внешними клапанами, трубчатый вал снабжен подшипниками, обоймы которых прикреплены к корпусу, в средней части трубчатого вала закреплен механизм вращения, в нижней части трубчатого вала закреплена вакуумная клапанная система, в верхней части корпуса закреплен водозаборник-накопитель. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F04B 7/00 (11) (13) 151 881 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014115158/06, 15.04.2014 (24) Дата начала отсчета срока действия патента: 15.04.2014 (72) Автор(ы): Канаев Зим-Эли Собраилович (RU) (73) Патентообладатель(и): Канаев Зим-Эли Собраилович (RU) R U Приоритет(ы): (22) Дата подачи заявки: 15.04.2014 (45) Опубликовано: 20.04.2015 Бюл. № 11 R U 1 5 1 8 8 1 Формула полезной модели Турбоаэродинамический вакуумный насос центробежной силы содержит вертикальный корпус с основанием, установленный по центру корпуса трубчатый вал с закрепленными на нем горизонтальными водонапорными трубами с внешними клапанами, трубчатый вал снабжен подшипниками, обоймы которых прикреплены к корпусу, в средней части трубчатого вала закреплен механизм вращения, в нижней части трубчатого вала закреплена вакуумная клапанная система, в верхней части корпуса закреплен водозаборник-накопитель. Стр.: 1 U 1 U 1 (54) ТУРБОАЭРОДИНАМИЧЕСКИЙ ВАКУУМНЫЙ НАСОС ЦЕНТРОБЕЖНОЙ СИЛЫ 1 5 1 8 8 1 Адрес для переписки: 366224, Чеченская Респ., Ножай-Юртовский рн, с. Даттах, ул. Кадырова, 31, Канаев Зим-Эли Собраилович U 1 U 1 1 5 1 8 8 1 1 5 1 8 8 1 R U R U Стр.: 2 RU 5 10 15 20 25 30 35 40 45 151 881 U1 Данная полезная модель может выполнить широкий спектр задач по поднятию и перемещению жидкостей различных свойств и температур. Устройство, представленное мною как полезная модель является новейшей ...

НАСОС-ДОЗАТОР

Предложение относится к дозирующим устройствам и может быть использовано преимущественно в медицине или фармацевтической промышленности, например, для дозаторов лекарственных средств в ампульном производстве, а также в любой области техники. Насос-дозатор состоит из корпуса с подающим и нагнетательным каналами, шибера с каналом, плунжера, рабочий конец которого размещен в дозирующей камере, и толкателя плунжера, выполненного с элементом для кинематического соединения с приводом. Толкатель выполнен разъемным, причем одна из его частей выполнена с цилиндрическими выточками, а элемент для кинематического соединения с приводом находится на другой его части. Другой конец плунжера выполнен с уступом и размещен в толкателе с возможностью взаимодействия с его стенками. Технический результат - улучшенная точность и стабильность дозирования, в особенности малых доз при одновременном повышении долговечности устройства. 1 з.п. ф-лы, 5 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 169 288 U1 (51) МПК A61J 1/20 (2006.01) A61J 1/14 (2006.01) B65B 3/32 (2006.01) F04B 7/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2016113316, 07.04.2016 (24) Дата начала отсчета срока действия патента: 07.04.2016 (72) Автор(ы): Кузьмин Валерий Павлович (RU), Кузьмин Михаил Валерьевич (RU) 14.03.2017 Приоритет(ы): (22) Дата подачи заявки: 07.04.2016 (56) Список документов, цитированных в отчете о поиске: RU 2314762 C2, 20.01.2008. RU 1 6 9 2 8 8 R U (54) НАСОС-ДОЗАТОР (57) Реферат: Предложение относится к дозирующим устройствам и может быть использовано преимущественно в медицине или фармацевтической промышленности, например, для дозаторов лекарственных средств в ампульном производстве, а также в любой области техники. Насос-дозатор состоит из корпуса с подающим и нагнетательным каналами, шибера с каналом, плунжера, рабочий конец которого размещен в дозирующей камере, и толкателя плунжера, выполненного с элементом для Стр.: 1 ...

Бесклапанный плунжерный насос

Заявлен бесклапанный плунжерный насос, в котором обеспечивается центровка плунжера относительно оси гильзы с тем, чтобы повысить надежность бесклапанного плунжерного насосаБесклапанный плунжерный насос содержит корпус (1), закрепленную на корпусе гильзу (2) с входным и выходным каналами (22, 23), плунжер (3) с продольной лыской (33) в зоне расположения указанных входного и выходного каналов (22, 23), размещенный в гильзе (2) с возможностью возвратно-поступательного и вращательного движения и попеременного открытия и закрытия указанных каналов (22, 23), червячный редуктор (4) с ротором (41) на выходном валу (42), средство (8) соединения ротора (41) с плунжером (3), содержащее шатун (81), соединенный одним концом шарнирно с ротором (41), и толкатель (82), соединенный одним концом через шарнир с шатуном (81) и противоположным концом со штоком (32) плунжера (3). РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 169 810 U1 (51) МПК F04B 7/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016129791, 20.07.2016 (24) Дата начала отсчета срока действия патента: 20.07.2016 03.04.2017 (73) Патентообладатель(и): Общество с ограниченной ответственностью "Завод дозировочной техники "Ареопаг" (RU) Приоритет(ы): (22) Дата подачи заявки: 20.07.2016 Адрес для переписки: 196601, Санкт-Петербург, Пушкин-1, а/я 61, Тепловой В.Е. 1548506 A1, 07.03.1990. US 4575317 A, 11.03.1986. US 3168872 A, 09.02.1965. 1 6 9 8 1 0 R U (57) Формула полезной модели 1. Бесклапанный плунжерный насос, содержащий корпус, закрепленную на корпусе гильзу с входным и выходным каналами, плунжер с продольной лыской в зоне расположения указанных входного и выходного каналов, размещенный в гильзе с возможностью возвратно-поступательного и вращательного движения и попеременного открытия и закрытия указанных каналов, червячный редуктор с ротором на выходном валу, средство соединения ротора с плунжером, содержащее шатун, шарнирно ...

Клапанный узел для насоса

Полезная модель относится к гидромашиностроению, в частности к клапанным узлам, преимущественно, плунжерных или поршневых нефтегазопромысловых насосов, нагнетающих абразивосодержащие растворы. Клапанный узел для насоса содержит седло, имеющее осевой канал и канавку с расположенным в ней уплотнительным кольцом, и тарельчатый клапан с периферийным эластичным уплотнителем, зафиксированным в кольцевой канавке, и направляющей крестовиной, расположенной в осевом канале седла. Седло в верхней части снабжено кольцевым выступом, имеющим внутреннюю коническую рабочую поверхность, наклоненную к продольной оси клапанного узла, а рабочая поверхность эластичного уплотнителя в поперечном сечении имеет радиус «R», кольцевая канавка тарельчатого клапана ограничена верхней и нижней горизонтальными полками, при этом верхняя горизонтальная полка длиннее, чем нижняя горизонтальная полка. Технический результат, получаемый при решении указанной задачи, заключается в достижении плавной посадки клапана на седло вне диапазона значений возрастания ударных нагрузок. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 174 522 U1 (51) МПК F04B 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2017131539, 08.09.2017 (24) Дата начала отсчета срока действия патента: 08.09.2017 (72) Автор(ы): Зверев Вячеслав Витальевич (RU) (73) Патентообладатель(и): Общество с ограниченной ответственностью "СП Омега" (RU) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: RU 105965 U1, 27.06.2011. RU Приоритет(ы): (22) Дата подачи заявки: 08.09.2017 2241887 C1, 10.12.2004. RU 106928 U1, 27.07.2011. US3981481 (A), 1976-09-21. (45) Опубликовано: 18.10.2017 Бюл. № 29 U 1 R U Стр.: 1 имеющим внутреннюю коническую рабочую поверхность, наклоненную к продольной оси клапанного узла, а рабочая поверхность эластичного уплотнителя в поперечном сечении имеет радиус «R», кольцевая канавка тарельчатого клапана ограничена верхней и нижней ...

Клапанный узел для насоса

Полезная модель относится к гидромашиностроению, в частности к клапанным узлам преимущественно плунжерных или поршневых нефтегазопромысловых насосов, нагнетающих абразивосодержащие растворы. Клапанный узел для насоса содержит седло, имеющее осевой канал и канавку с расположенным в ней уплотнительным кольцом, и тарельчатый клапан с периферийным эластичным уплотнителем, зафиксированным в кольцевой канавке, и направляющей крестовиной, расположенной в осевом канале седла. Тарельчатый клапан состоит из тарелки и шайбы, образующих кольцевую канавку, причем тарелка содержит направляющую крестовину и стержень с резьбой, на который навинчена шайба, седло имеет внутреннюю коническую рабочую поверхность, наклоненную к продольной оси клапанного узла, угол наклона которой меньше угла наклона рабочей поверхности периферийного эластичного уплотнителя. Кольцевая канавка тарельчатого клапана сверху ограничена полкой шайбы, а снизу - стенкой тарелки. Технический результат, получаемый при решении указанной задачи, заключается в возможности замены периферийного эластичного уплотнителя без механического устройства (приспособления) и использования тарельчатого клапана многочисленное количество раз в зависимости от условий эксплуатации. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 174 523 U1 (51) МПК F04B 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2017131540, 08.09.2017 (24) Дата начала отсчета срока действия патента: 08.09.2017 (72) Автор(ы): Зверев Вячеслав Витальевич (RU) (73) Патентообладатель(и): Общество с ограниченной ответственностью "СП Омега" (RU) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: RU 105965 U1, 27.06.2011. RU Приоритет(ы): (22) Дата подачи заявки: 08.09.2017 2241887 C1, 10.12.2004. RU 106928 U1, 27.07.2011. US3981481 (A), 1976-09-21. (45) Опубликовано: 18.10.2017 Бюл. № 29 U 1 R U Стр.: 1 с резьбой, на который навинчена шайба, седло имеет внутреннюю коническую ...

Подкачивающая помпа

Полезная модель относится к области машиностроения и может быть использована для перекачивания топлива.Подкачивающая помпа состоит из: чугунного корпуса, поршня с пружинами, роликового толкателя со стержнем и пружиной, кулачка, всасывающего и нагнетательного клапанов с пружинами. При этом нагнетательный клапан устанавливается непосредственно в поршень.Устройство работает следующим образом:Под воздействием кулачка роликовый толкатель вместе с поршням перемещаются вверх. При этом давление во всасывающей полости возрастает. Из-за повышенного давления всасывающий клапан закрывается, а нагнетательный клапан открывается, и топливо перетекает в нагнетательную полость.При дальнейшем вращении кулачка поршень под действием пружины будет перемещаться в обратном направлении. Одновременно нагнетательный клапан закроется, при этом топливо из нагнетательной полости поршня поступает к фильтру тонкой очистки. При этом в всасывающей полости образуется разряжение и топливо через клапан заполняет эту полость. Ц 1 175274 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) (11) зе ваве д (13) (51) МПК НОЯВ 53/12 (2006.01) НО4В 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2017106502, 27.02.2017 (24) Дата начала отсчета срока действия патента: 27.02.2017 Дата регистрации: 29.11.2017 Приоритет(ы): (22) Дата подачи заявки: 27.02.2017 (45) Опубликовано: 29.11.2017 Бюл. № 34 Адрес для переписки: 160555, г. Вологда, с. Молочное, ул. Шмидта, 2, ФГБОУ ВО Вологодская ГМХА, отдел науки (72) Автор(ы): Зефиров Игорь Владимирович (КО), Кузнецова Наталья Ивановна (КО), Паутов Алексей Иванович (КО) (73) Патентообладатель(и): федеральное государственное бюджетное образовательное учреждение высшего образования "Вологодская государственная молочнохозяйственная академия имени Н.В. Верещагина" (ФГБОУ ВО Вологодская ГМХА) (КО) (56) Список документов, цитированных в отчете о поиске: КИ 146724 01, 20.102014. ВЧ 2013153668 А, 10.06.2015. ЗИ 8090 АТ, 28.02. ...

Седло клапана для насоса

Полезная модель относится к конструкции седла клапана для насоса высокого давления. Седло клапана для насоса имеет осевой канал и коническую наружную поверхность, на которой выполнена кольцевая канавка, в которой установлено уплотнение. В верхней части седла выполнен кольцевой выступ, внутренняя поверхность которого является конической рабочей поверхностью седла, выполненной с наклоном к продольной оси седла. Внутренняя поверхность осевого канала выполнена с расположенными последовательно по направлению движения потока жидкости цилиндрической поверхностью, фасонной поверхностью, выполненной в виде радиусного скругления относительно продольной оси седла, и конической поверхностью, выполненной с наклоном к продольной оси. Технический результат - повышение ресурса и надежности работы седла за счет снижения ударных нагрузок действующих на седло. 4 з.п. ф-лы, 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 181 151 U1 (51) МПК F04B 7/02 (2006.01) F16K 15/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F04B 7/02 (2006.01); F16K 15/02 (2006.01) (21)(22) Заявка: 2018118977, 23.05.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Зверев Вячеслав Витальевич (RU) Дата регистрации: 05.07.2018 (56) Список документов, цитированных в отчете о поиске: RU 174523 U1, 18.10.2017. RU 106928 U1, 27.07.2011. RU 174522 U1, 18.10.2017. RU 170561 U1, 28.04.2017. US 5249600 A1, 05.10.1993. (45) Опубликовано: 05.07.2018 Бюл. № 19 R U (54) Седло клапана для насоса (57) Реферат: Полезная модель относится к конструкции седла клапана для насоса высокого давления. Седло клапана для насоса имеет осевой канал и коническую наружную поверхность, на которой выполнена кольцевая канавка, в которой установлено уплотнение. В верхней части седла выполнен кольцевой выступ, внутренняя поверхность которого является конической рабочей поверхностью седла, выполненной с наклоном к продольной оси седла. Внутренняя ...

Клапанный узел насоса

Полезная модель относится к гидромашиностроению, в частности к клапанным узлам насосов высокого давления. Клапанный узел насоса включает седло клапана, имеющее осевой канал и канавку с расположенным в ней уплотнительным кольцом, и тарельчатый клапан с периферийным эластомерным уплотнителем, зафиксированным в кольцевой канавке, и крестовиной с направляющими ножками, расположенной в осевом канале седла. Седло в верхней части снабжено кольцевым выступом, имеющим внутреннюю коническую рабочую поверхность, наклоненную к продольной оси клапанного узла. Рабочая поверхность эластомерного уплотнителя выполнена со скруглением в направлении рабочей поверхности седла и в поперечном сечении имеет радиус R. На внутренней поверхности осевого канала выполнены фасонная поверхность, в виде радиусного скругления RR относительно продольной оси, и коническая поверхность, выполненная с наклоном под вторым углом к продольной оси. На внутренней поверхности каждой направляющей ножки выполнены лопасти. Технический результат - повышение ресурса и надежности работы клапанного узла. 4 з.п. ф-лы. 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 181 155 U1 (51) МПК F04B 7/02 (2006.01) F16K 15/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F04B 7/02 (2006.01); F16K 15/02 (2006.01) (21)(22) Заявка: 2018118975, 23.05.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Зверев Вячеслав Витальевич (RU) Дата регистрации: 05.07.2018 (56) Список документов, цитированных в отчете о поиске: RU 174523 U1, 18.10.2017. RU 170561 U1, 28.04.2017. US 5249600 A1, 05.10.1993. RU 132854 U1, 27.09.2013. (45) Опубликовано: 05.07.2018 Бюл. № 19 R U (54) Клапанный узел насоса (57) Реферат: Полезная модель относится к гидромашиностроению, в частности к клапанным узлам насосов высокого давления. Клапанный узел насоса включает седло клапана, имеющее осевой канал и канавку с расположенным в ней уплотнительным кольцом, и тарельчатый ...

Клапан с уплотнением для насоса

Полезная модель относится к гидромашиностроению, в частности к клапанам с уплотнением для насосов высокого давления. Тарельчатый клапан насоса снабжен периферийным эластомерным уплотнением и крестовиной с направляющими ножками. Эластомерное уплотнение зафиксировано в кольцевой канавке клапана и ограничено верхней и нижней горизонтальными полками. Крестовина выполнена с возможностью расположения в осевом канале седла. Рабочая поверхность эластомерного уплотнения выполнена со скруглением и в поперечном сечении имеет радиус R. Крестовина клапана выполнена винтовой. На внутренней поверхности каждой направляющей ножки выполнены лопасти. На верхней поверхности клапана выполнен направляющий выступ для установки и удерживания конической пружины. Достигается повышение ресурса и надежности работы клапана. 2 з.п. ф-лы, 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 181 157 U1 (51) МПК F04B 7/02 (2006.01) F16K 15/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F04B 7/02 (2006.01); F16K 15/02 (2006.01) (21)(22) Заявка: 2018118976, 23.05.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Зверев Вячеслав Витальевич (RU) Дата регистрации: 05.07.2018 (56) Список документов, цитированных в отчете о поиске: RU 174523 U1, 18.10.2017. RU 106928 U1, 27.07.2011. RU 170561 U1, 28.04.2017. US 5249600 A1, 05.10.1993. (45) Опубликовано: 05.07.2018 Бюл. № 19 R U (54) Клапан с уплотнением для насоса (57) Реферат: Полезная модель относится к гидромашиностроению, в частности к клапанам с уплотнением для насосов высокого давления. Тарельчатый клапан насоса снабжен периферийным эластомерным уплотнением и крестовиной с направляющими ножками. Эластомерное уплотнение зафиксировано в кольцевой канавке клапана и ограничено верхней и нижней горизонтальными полками. Крестовина выполнена с возможностью расположения в Стр.: 1 осевом канале седла. Рабочая поверхность эластомерного уплотнения выполнена со ...

Регулируемый дозирующий насос

Полезная модель относится к насосостроению. Техническими задачами полезной модели являются повышение надежности регулируемого дозирующего насоса и возможность применения для всех видов жидкости. Решение технической задачи в регулируемом дозирующем насосе, содержащем плунжер, установленный с возможностью возвратно-поступательного и вращательного движения при помощи приводного механизма, содержащего шатун, маховик, червячное колесо, связанное с червяком и образующее с червяком кинематическую пару редуктора, корпус которого установлен в корпусе насоса на шарнирных опорах, имеющих общую ось и шарнирно соединен с вилкой, который соединен с регулировочным винтом, ввинченным в резьбовое отверстие корпуса с возможностью увеличения или уменьшения угла наклона маховика относительно оси плунжера, достигается тем, что насос снабжен ползуном, установленным в гильзе на торце корпуса насоса, гильза ползуна связана с наружной гильзой насоса, которая другим концом связана с головкой, в которой установлен плунжер и выполнены входное и выходное отверстия, при этом плунжер шарнирно соединен с маховиком, установленным на валу червячного колеса через ползун, являющийся направляющей частью для плунжера с возможностью самокомпенсации погрешностей сборки, предотвращая его задирание и заклинивание. 2 фиг. Ц 182199 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ ВУ” 182 199” 4 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ ММ9К Досрочное прекращение действия патента из-за неуплаты в установленный срок пошлины за поддержание патента в силе Дата прекращения действия патента: 02.05.2018 Дата внесения записи в Государственный реестр: 18.11.2019 Дата публикации и номер бюллетеня: 18.11.2019 Бюл. №32 Стр.: 1 па 66гс8 ЕП

Fluid working machine and method of operating a fluid working machine

A fluid working machine comprises a working chamber of cyclically varying volume, a high pressure manifold, and an actuated high pressure valve for regulating the flow of fluid between the working chamber and the high pressure manifold. The actuated high pressure valve comprises a moveable valve member, operable between a closed position and at least one open position. A controllable opening mechanism provides an active urging force to urge the moveable valve member from the said closed position towards at least one said open position, the volume of the working chamber varying between a maximum volume and a minimum volume. The controllable opening mechanism provides the active urging force more than once while the volume of the working chamber is intermediate the maximum of chamber volume and the minimum of chamber volume.

Method of converting liquid ring pumps having sealing liquid vents

Converting a liquid ring pump which vents sealing liquid (compressant) from the working chamber of the pump to a liquid ring pump having a gas venting system by retasking a selected passage of the liquid ring pump. The passage is selected from a group of passages consisting of ( 1 ) a sealing liquid introduction passage and ( 2 ) a sealing liquid vent passage.

Pump with side inlet valve for improved functioning in an inverted container

A pump for use in an inverted dispenser is disclosed herein. In one embodiment, the liquid pump includes a fluid chamber that has a top portion when in the inverted position and at least one side wall located below the top portion. A liquid intake port extends through the at least one side wall and allows fluid to flow into the fluid chamber. The pump also includes a check valve to prevent fluid from flowing out of the fluid chamber through the fluid intake port that is located in the at least one side wall. Actuation of the liquid pump in a first direction causes fluid to enter the fluid chamber through the fluid intake port and actuation of the liquid pump in a second direction causes liquid to exit the fluid chamber trough the fluid chamber outlet and out of a dispensing outlet. In one embodiment, the check valve is an elastomeric valve. The elastomeric valve may include a top portion to seal of an inlet opening in the top of an existing pump to convert the pump into a pump having an inlet opening below the top of the pump. In another embodiment, the fluid piston in the liquid pump is the check valve that seals off the intake opening from the fluid chamber when the fluid piston is moved past the inlet opening.

Adhesive and peripheral systems and methods for medical devices

Fill stations and base stations are provided for personal pump systems. The fill stations may be opened and closed to accept a reservoir and to allow fluid to be introduced into the reservoir for use with personal pump systems. The fill stations may hold the reservoir at a tilt relative to an underlying surface and may discourage overfilling of the reservoir. The filling stations may also include viewing windows having fluid lines marked thereon for indicating volume of fluid within the reservoir.

Patch-sized fluid delivery systems and methods

A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.

Adhesive and peripheral systems and methods for medical devices

A repeater system may control a pump by using a repeater and a user interface. An adhesive patch system may be used for affixing a pump or other object to a human body. Such an adhesive patch system may include two sets of adhesive members, each member including an adhesive material on at least one side so as to attach to the body. The members of the first set are spaced to allow the members of the second set to attach to the body in spaces provided between the members of the first set, and the members of the second set are spaced to allow members of the first set to detach from the body without detaching the members of the second set. Also, fill stations and base stations are provided for personal pump systems.

Method and Apparatus for Fluid Pumping

A fluid balanced hydraulic pump has a support tower that can be mounted over a well. At least one cylinder assembly is pivotally mounted within the support tower. A prime mover provides hydraulic fluid to the at least one cylinder assembly through a wedge spool control valve that provides precise speed control with minimal maintenance requirements. Stroke speed can be easily and quickly adjusted without the need for expensive, troublesome or complicated electronic equipment.

Electronic control valve having an integral non-contact noise mitigation device

An electronic control valve having a valve stationary portion defining a substantially central bore extending along an axis of the valve, and a valve train including a movable member of the valve. The valve train moveable member is disposed in the central bore, and the valve train is adapted for reciprocal movement along the axis. A mass is engaged is with the valve train and adapted for reciprocal movement along the axis. A biasing means is disposed between the valve train and the mass. Reciprocal movements of the mass along the axis induced by forces exerted along the axis by the valve train are transmitted through the biasing means, whereby reciprocal movement of the valve train along the axis is dynamically reduced by the mass.

Micropump

A pump comprising a housing comprising a rotor chamber, inlet and outlet channels opening into the rotor chamber, and inlet and outlet seals mounted on a surface of the chamber, and a rotor rotatably and axially slidably received in the chamber and comprising a first axial extension comprising a liquid supply channel and a second axial extension comprising a liquid supply channel, the first and second axial extensions having different diameters. The inlet and outlet seals engage a surface of the rotor, whereby the liquid supply channel of each axial extension in conjunction with a corresponding seal forms a valve that opens and closes as a function of the angular and axial displacement of the rotor. At least one of the inlet and outlet channels opens transversely into the rotor chamber and at least one of the inlet and outlet seals forms a closed circuit circumscribing said at least one of the inlet and outlet channels.

Charged hydraulic system

In open-circuit hydraulic systems ( 1 ), the cross-sections of the supply lines ( 6 ) and input valves of the hydraulic pump ( 3 ) have to be large, so that sufficient flow flux can be provided. This hinders a reduction of the size of the pump and the whole hydraulic system. It is suggested that the supply flow ( 7 ) of a hydraulic pump ( 3 ) is charged by a second, charging pump ( 2 ), to a mid-pressure level ( 7 ). The cross-sections of the supply flow areas can thus be decreased.

Pumping cassette

A pump cassette is disclosed. The pump cassette includes a housing having at least, one fluid inlet line and at least one fluid outlet line. The cassette also includes at least one reciprocating pressure displacement membrane pump within the housing. The pressure pump pumps a fluid from the fluid inlet line to the fluid outlet line. A hollow spike is also included on the housing as well as at least one metering pump The metering pump is fluidly connected to the hollow spike on the housing and to a metering pump fluid line. The metering pump fluid line is fluidly connected to the fluid outlet line.

VARIABLE DISPLACEMENT COMPRESSOR SHAFT OIL SEPARATOR

A compressor shaft has a fluid inlet that leads into a fluid inlet tube, which is perpendicular to a longitudinal hole in the length of the shaft. An intermediate inlet into the longitudinal hole is located between the fluid inlet and an outlet at an end of the longitudinal hole. A drive plate mounted to the compressor shaft has a protruding drive arm, which uses a holding mechanism to connect to a swash plate. At certain swash plate angles, the intermediate inlet is covered and sealed by the swash plate, or uncovered. The drive arm defines an internal bore and a through slot. At opposite ends, the bore merges into the longitudinal hole and opens into the through slot. The holding mechanism and/or swash plate guide covers the bore in the slot. 1. A compressor apparatus comprising:a compressor casing defining a suction chamber;a piston defining a working chamber with the compressor casing;a control valve contained within the compressor casing; a longitudinal hole, the longitudinal hole open at a first shaft end and extending to a second shaft end, wherein the longitudinal hole at the second shaft end defines an outlet always open directly into the suction chamber;', 'a fluid inlet and a fluid inlet tube, the fluid inlet tube approximately perpendicular to the longitudinal hole at the first end of the longitudinal hole, the fluid inlet tube fluidly linking the fluid inlet and the longitudinal hole;, 'a compressor shaft defininga swash plate connected to the shaft;an intermediate inlet located between the fluid inlet and the outlet;a drive plate mounted to the compressor shaft located between the fluid inlet and the intermediate inlet;a drive arm protruding from the drive plate; wherein the intermediate inlet is located under the swash plate and is sealed by the swash plate when the compressor is undergoing low displacement;the swash plate is spaced from the intermediate inlet to open the intermediate inlet when the compressor is undergoing high displacement; andthe ...

ENERGY RECOVERY CONTROL CIRCUIT AND WORK MACHINE

An energy recovery control circuit is provided with an energy recovery system for recovering energy of a work equipment. The energy recovery control circuit includes an recovery control valve block in which a plurality of valves that constitute the energy recovery system are incorporated. The recovery control valve block includes a main spool, in which a plurality of control characteristics concerning recovery of energy are consolidated. 1. An energy recovery control circuit provided with an energy recovery system for recovering energy that a work equipment has , the energy recovery control circuit comprising:an recovery control valve block in which a plurality of valves that constitute the energy recovery system are incorporated, wherein:the recovery control valve block includes a main spool, in which a plurality of control characteristics concerning recovery of energy are consolidated.2. An energy recovery control circuit as claimed in claim 1 , wherein:the work equipment has a boom that is vertically movable by a boom cylinder; andthe recovery control valve block has functions such that the potential energy the boom has at a raised position is recovered from the boom cylinder and accumulated in an accumulator during boom-down operation and that the fluid accumulated in the accumulator is directly released to the boom cylinder during boom-up operation.3. An energy recovery control circuit as claimed in claim 2 , wherein:a first boom cylinder and a second boom cylinder arranged in parallel with each other serve as the boom cylinder; and an inflow rate control characteristic for controlling pressure accumulation inflow rate from the first boom cylinder into the accumulator;', 'an unload control characteristic for controlling unload from the second boom cylinder;', 'a switching control characteristic for controlling switching of the first boom cylinder and the second boom cylinder between communication and separation; and', 'a release rate control characteristic for ...

AIR SUCTION PUMP AND METHOD FOR VACUUM SEALING VINYL BAG USING SAME

Provided are an air suction pump and a method of vacuum sealing vinyl bag using same. The air suction pump includes a base member, a housing mounted on a top of the base member to be movable in a vertical direction, a piston member disposed inside the housing to be movable in the vertical direction, a first heating wire mounted to be exposed to the outside on one or more of the top of the base member, the bottom of the housing, and a bottom of the piston member, and a power supply part supplying power to the first heating wire. A top of the housing is opened and a bottom of the housing is opened. A top of the piston member is exposed to the outside through the top of the housing. The air suction pump discharges the internal air of a vinyl bag, applies vacuum into the vinyl bag, and immediately seals the vinyl bag, thus enabling food of the vinyl bag to be easily kept in a vacuum state for a long time. 1. An air suction pump , comprising:a base member;a housing mounted on a top of the base member to be movable in a vertical direction, a top of the housing being opened and a bottom of the housing being opened;a piston member disposed inside the housing to be movable in the vertical direction, a top of the piston member being exposed to the outside through the top of the housing;a first heating wire mounted to be exposed to the outside, on one or more of the top of the base member, the bottom of the housing, and a bottom of the piston member; anda power supply part supplying power to the first heating wire.2. The air suction pump of claim 1 , wherein claim 1 ,a vinyl bag, in which a discharge hole is formed in a top thereof, is disposed between the base member and the housing, andwhen the housing has descended, internal air of the vinyl bag is discharged to the outside by a reciprocating motion of the piston member through the discharge hole formed in the vinyl bag, and then, by heating the first heating wire, a circumference of the discharge hole formed in the vinyl ...

Vibratory Cavitation Pump Lishanski

A vibratory cavitation pump is provided that includes a working cylinder having an fluid inlet and a fluid outlet, a rod extending into the cylinder, a piston fixed to the rod, a plate fixed to the rod and spaced from the piston, an activator slidably mounted to the rod between the piston and the plate and an oscillating pumping mechanism operably connected to the rod to move the rod with respect to the working cylinder. The sliding activator creates cavitation in the fluid being pumped to increase the ease of pumping the fluid, such as high viscosity fluids. The pump can also include an external cylinder disposed around the working cylinder to impart rotational motion to the incoming fluid, thereby enhancing the cavitation created in the fluid by the pump, rendering the fluid easy to displace. 1. A vibratory cavitation pump comprising:a. a working cylinder having an fluid inlet and a fluid outlet;b. a rod extending into the cylinder;c. a piston fixed to the rod;d. a plate fixed to the rod and spaced from the piston;e. an activator slidably mounted to the rod between the piston and the plate; andf. an oscillating pumping mechanism operably connected to the rod to move the rod with respect to the working cylinder.2. The pump of wherein the plate includes a number of apertures therein.3. The pump of wherein the fluid outlet includes a valve.4. The pump of further comprising an external cylinder disposed around and in fluid communication with the working cylinder.5. The pump of wherein the working cylinder includes a number of apertures formed in the working cylinder to enable fluid in the external cylinder to flow into the working cylinder.6. The pump of wherein the external cylinder comprises;a. an internal cavity; andb. a ring extending radially outwardly from the external cylinder and defining an annular ring cavity therein.7. The pump of wherein the fluid inlet is tangentially connected to the ring.8. A method of pumping a fluid claim 6 , the method comprising the ...

PUMP POWER CONSUMPTION ENHANCEMENT

Methods and apparatus for reducing the power consumption of a pump are provided herein. In some embodiments, a pump power consumption reduction system for use in a substrate processing system may include a vacuum chamber having an exhaust port; a valve; a first pump having a pump inlet port coupled to the exhaust port via the valve and a pump exhaust port to couple the first pump to an exhaust handling system; and a second pump coupled to the pump exhaust port to selectively reduce an exhaust pressure of the first pump. 1. A pump power consumption reduction system for use in a substrate processing system , comprising:a vacuum chamber having an exhaust port;a valve;a first pump having a pump inlet port coupled to the exhaust port via the valve and a pump exhaust port to couple the first pump to an exhaust handling system; anda second pump coupled to the pump exhaust port to selectively reduce an exhaust pressure of the first pump.2. The system of claim 1 , wherein the first pump is an integrated point of use pump.3. The system of claim 1 , wherein the second pump is a multi-stage pump.4. The system of claim 3 , wherein the multi-stage pump further comprises a gas inlet port and a regulator coupled to the gas inlet port to regulate the flow of gas into the multi-stage pump.5. The system of claim 4 , further comprising a gas source coupled to the regulator to provide an inert gas or compressed dry air to the multi-stage pump.6. The system of claim 1 , wherein the second pump is a roughing pump.7. The system of claim 1 , further comprising a controller coupled to the second pump claim 1 , wherein the controller activates the second pump when the power consumption of the first pump exceeds a predetermined level.8. The system of claim 1 , wherein the vacuum chamber comprises a transfer chamber claim 1 , a load lock claim 1 , or a substrate processing chamber.9. A method of reducing the power consumption of a first pump coupled to a vacuum chamber in a substrate processing ...

FUEL INJECTION PUMP INCLUDING A VARIABLE PRESSURE COMPARTMENT

The present invention relates to a fuel injection pump having a variable pressure chamber which can adjust a fuel injection timing according to each engine load with a simple structure and a lower manufacture cost compared to the conventional injection pump without a separate apparatus for moving a barrel as well as not modifying a shape of a plunger. 1. A fuel injection pump having a variable pressure chamber , comprising:a barrel inserted and installed within a pump housing;a plunger slidably coupled to an inside of the barrel; andan upper cover coupled to an upper surface of the pump housing, wherein the plunger closes a discharge hole of the barrel to begin a pressure increase of fuel to inject high pressure fuel, the fuel injection pump further comprising:a pressure adjustment means comprising:a contact plug of which lower portion is inserted and installed in the upper cover;a cylinder of which lower portion is inserted and installed in the contact plug and having the variable pressure chamber formed inside thereof;a main fuel pressing hole formed in the upper cover and the barrel to connect the variable pressure chamber of the cylinder and a plunger insertion hole of the barrel;a piston installed in the variable pressure chamber of the cylinder to enable an upward and downward sliding motion thereof; anda manual pressure adjustment unit installed on an upper portion of the cylinder to enable a vertical height adjustment to elastically support an upper portion of the piston.2. The fuel injection pump of claim 1 , wherein the pressure adjustment means further comprises:an automatic pressure adjustment unit connected to an air inflow groove which penetrates the cylinder and the contact plug to be positioned above the piston and to automatically adjust a location of the piston.3. The fuel injection pump of claim 2 , wherein the automatic pressure adjustment unit comprises:an air pressure supplier connected to the air inflow groove, which penetrates the cylinder ...

PNEUMATIC TOOL HAVING CLOCKWISE AND COUNTERCLOCKWISE ROTATION FUNCTION

A pneumatic tool includes a housing, an air cylinder disposed in the housing, a valve unit, and a controlling unit. The air cylinder has an outer surface formed with a valve seat. A rotary valve of the valve unit is rotatable to allow compressed air to flow into the air cylinder through a selected one of first and second passages to thereby produce clockwise or counterclockwise rotation of the tool. The controlling unit includes a movable pin operable to move in the housing to drive rotation of the rotary valve. Preferably, the valve unit is disposed on the housing in a manner that the space occupied thereby in the housing is reduced. 1. A pneumatic tool comprising:a housing having an intake passage adapted to be connected with a compressed air source;an air cylinder disposed in said housing and including a cylinder wall centered at an X-axis and defining an air chamber, a valve seat centered at a Z-axis perpendicular to said X-axis and connected to said cylinder wall, a first passage, and a second passage, said first and second passages being formed in said cylinder wall and being in fluid communication with said air chamber and said valve seat;a valve unit including a rotary valve that is disposed in said valve seat and that has an intermediate passage, said rotary valve being rotatable about said Z-axis between a first position whereat said intermediate passage is in fluid communication with said first passage in said air cylinder, and a second position whereat said intermediate passage is in fluid communication with said second passage in said air cylinder; anda controlling unit including a movable pin disposed movably on said housing and operable to move in said housing along a Y-axis perpendicular to said X-axis and said Z-axis to thereby drive rotation of said rotary valve.2. The pneumatic tool as claimed in claim 1 , wherein said valve unit further includes an air-guiding retainer disposed removably on said valve seat so as to confine said rotary valve in ...

DIFFERENTIAL PRESSURE CONTROLLED MOTOR AND PUMP BARRIER FLUIDS PRESSURE REGULATION SYSTEM

A motor and a pump barrier fluids pressure regulation system for a subsea motor and pump module is disclosed. The pressure regulation system comprises—a barrier fluid circuit () providing fluid flow communication from a hydraulic fluid supply () to a first cavity in the motor and pump module,—a pressure controlled flow control valve () controlling the supply of hydraulic fluid to the barrier fluid circuit ();—a second cavity arranged to receive hydraulic fluid from the hydraulic fluid supply via the first cavity, and—a pilot pressure circuit () comprising means for detecting and returning to the pressure controlled flow control valve () a differential pressure over a flow restriction () connecting the first and second cavities. 11. A motor and a pump barrier fluids pressure regulation system for a subsea motor and pump module () , the pressure regulation system comprising:{'b': 10', '8, 'a barrier fluid circuit () providing fluid flow communication from a hydraulic fluid supply () to a first cavity in the motor and pump module,'}{'b': 9', '10, 'a pressure controlled flow control valve () controlling a flow of hydraulic fluid from the hydraulic fluid supply to the barrier fluid circuit ();'}a second cavity in selective fluid communication with the hydraulic fluid supply via the first cavity, and{'b': 11', '9', '7', '13, 'a pilot pressure circuit () comprising means for detecting and returning to the pressure controlled flow control valve () a differential pressure over a flow restriction (; ) connecting the first and second cavities.'}212101319. The regulation system of claim 1 , wherein a pump barrier fluid circuit () receives hydraulic fluid from a motor barrier fluid circuit () via a flow restriction () of fixed orifice diameter arranged externally of the motor and pump module () claim 1 , and over which the differential pressure is detected and returned to the pressure controlled flow control valve () that feeds hydraulic fluid into the motor and pump barrier ...

POWER GENERATOR FOR EXTRACTING ENERGY FROM A LIQUID FLOW

The invention provides a device for extracting energy from a liquid flow. The device has a housing with one or more entry ports through which liquid flow can enter the housing and a plurality of exit ports through which liquid flow can leave the housing. An air compression chamber is provided along with a plurality of valve members which are operable to regulate flow of the liquid through the plurality of exit ports. The exit ports are arranged in an array inclined in the direction of liquid flow and the valve members are operable to close the exit ports downstream of the liquid flow consecutively as the liquid flow is incident thereon, thereby progressively diverting flow of the liquid towards the air compression chamber and compressing air therein, and to open the exit ports on a return flow of liquid from the air compression chamber. 1. A device for extracting energy from a liquid flow , the device comprising:a housing with one or more entry ports through which liquid flow can enter the housing and a plurality of exit ports through which liquid flow can leave the housing;an air compression chamber; anda plurality of valve members, operable to regulate flow of the liquid through the plurality of exit ports;wherein the exit ports are arranged in an array inclined in the direction of liquid flow and the valve members are operable to close the exit ports downstream of the liquid flow consecutively as the liquid flow is incident thereon, thereby progressively diverting flow of the liquid towards the air compression chamber and compressing air therein, and to open the exit ports on a return flow of liquid from the air compression chamber.2. A device according to further comprising an accumulation chamber for storing compressed air compressed in said air compression chamber.3. A device according to further comprising a turbine operable to be driven by air compressed in said air compression chamber.4. A device according to claim 3 , comprising a decompression chamber ...

OPERATION CONTROL DEVICE FOR A POSITIVE DISPLACEMENT PUMP, PUMP SYSTEM AND METHOD FOR OPERATING SUCH

An operational control device is disclosed for a positive-displacement pump having a motor, means for actuating the motor, state sensor means for detecting an actual operating parameter (e.g., pressure) of the pump, and operating mode means for controlling an operating mode of the pump. A first actuating mode of the operating mode means is set by the actuating means below a first operating-parameter threshold value (P1). This mode brings about a constantly rising pump pressure in the direction of an operating-parameter setpoint value (Pset) in a variable manner, which is dependent on a detected change in the operating parameter over a predefined time interval. A second actuating mode is set as normal operation to the operating-parameter setpoint value by the actuating means above the first operating-parameter threshold value. P1 is fixed or is calculated as a fraction of the operating-parameter setpoint value and/or a pump parameter correlated therewith. 1. An operation control device for a positive displacement pump having a pump motor , comprising:actuation means for setting a rotational speed, of the pump motor,state sensor means for detecting a current operating parameter, in particular operating pressure, of the positive displacement pump, andoperating mode means upstream from the actuation means, the operating mode means provided for selecting an operating mode of the positive displacement pump,wherein the operating mode means are configured such that, below a first threshold operating parameter value (P1), the actuation means sets a first actuating mode for the pump motor, said first actuating mode producing a pump pressure that constantly increases towards a target operating parameter value (Pset) that is variable and that, in its rising behaviour in relation to pump pressure, is dependent on a detected change in the operating parameter within a pre-specified time interval,wherein above the first threshold operating parameter value, the actuation means sets ...

HYDRAULIC CONTROL CIRCUIT

The present invention relates to a hydraulic circuit including: a variable displacement pump, a booster pump, a pump control controlling the displacement of the variable displacement pump, supplied by the booster pump via pressure control means, the pump control including a double-acting cylinder including a first chamber and a second chamber, wherein the first chamber is connected to said booster pump via a first setting line including pressure reducing means, the second chamber is connected to said booster pump via a second setting line including a proportional pressure reducer, such that control of the proportional pressure reducer controls the displacement of the variable displacement pump. 2. The hydraulic circuit according to the foregoing claim , wherein said pressure reducing means include two restrictions assembled in series , defining an intermediate pressure which supplies said first chamber.3. The hydraulic circuit according to claim 1 , wherein said proportional pressure reducer includes an electrical setting control.4. The hydraulic circuit according to claim 1 , wherein a restriction is placed between the proportional pressure reducer and the second chamber of the cylinder.5. The hydraulic circuit according to claim 4 , wherein the second chamber of the cylinder is connected to the hydraulic pump via a pressure limiter claim 4 , such that the pressure within said second chamber results from control of the proportional pressure reducer and from the pressure drop created by the flow passing through the pressure limiter through the pressure drop.6. The hydraulic circuit according to claim 5 , wherein said pressure limiter is designed to tap fluid in a high-pressure branch of said circuit and to lead it into the second chamber of the cylinder when the pressure in said high-pressure branch of the circuit is greater than or equal to a defined value.7. The hydraulic circuit according to claim 1 , wherein the variable displacement pump supplies a motor for ...

ADJUSTABLE HYDRAULIC PUMP

A hydraulic pump includes an adjustment device configured to adjust a delivery volume. The adjustment device is configured to be connected via a shuttle valve to a control pressure supply and to a working line. The working line is supplied by the hydraulic pump. The adjustment device is configured to be alternately supplied with control pressure by the control pressure supply and by the hydraulic pump. The hydraulic pump also includes a nozzle. The nozzle is configured to connect the working line to the control pressure supply in a zero stroke operating mode. The nozzle is formed in or on a valve body of the shuttle valve. 1. An adjustable hydraulic pump comprising:a shuttle valve having a valve body;an adjustment device configured to be connected via the shuttle valve to a control pressure supply and to a working line, the working line connected to the hydraulic pump; anda nozzle configured to continuously connect the working line to the control pressure supply, the nozzle in or on the valve body of the shuttle valve.2. The adjustable hydraulic pump according to claim 1 , wherein the nozzle is formed by a drilled hole.3. The adjustable hydraulic pump according to claim 1 , wherein:the valve body has a longitudinal drilled hole, andthe nozzle is formed by a radial drilled hole arranged in a central section of the valve body and which opens into the longitudinal drilled hole.4. The adjustable hydraulic pump according to claim 1 , wherein:the valve body has a first conical section and a first guide collar adjacent to the first conical section, andthe valve body has a second conical section and a second guide collar adjacent to the second conical section.5. The adjustable hydraulic pump according to claim 4 , wherein:the shuttle valve has an output connection;the first guide collar has at least one radial flattened portion, via which, in a first switched position of the valve body, a first pressure medium connection from the control pressure supply to the output ...

Compressed Air Supply Assembly and Control Method

A compressed air supply assembly for operating a pneumatic assembly includes a compressed air supply; a compressed air connection to the pneumatic assembly; a purge connection to the environment; a pneumatic main line between the compressed air supply and the compressed air connection comprising an air dryer; a purge line between the compressed air connection and the purge connection; and a solenoid valve arrangement with a control valve to control a purge valve. The control valve is connected to a control valve connection in a pneumatic control line connected to a pressure control connection of the purge valve, and the purge valve is connected to a purge valve connection in the purge line. A pressure-maintaining device is connected to the pneumatic control line and maintains control pressure at the pressure control connection when the purge valve connection is open, independently of pressure in the purge line and/or the main line. 1. A compressed air supply assembly for operating a pneumatic assembly , the compressed air supply assembly comprising:a compressed air supply;a compressed air connection to the pneumatic assembly;a purge connection to the environment;a pneumatic main line between the compressed air supply and the compressed air connection, the pneumatic main line including an air dryer;a purge line between the compressed air connection and the purge connection;a solenoid valve arrangement including a control valve to control a purge valve, the control valve being connected to a control valve connection in a pneumatic control line connected to a pressure control connection of the purge valve, and the purge valve being connected to a purge valve connection in the purge line; anda pressure-maintaining pneumatic device connected to the pneumatic control line, the pressure-maintaining device being adapted to maintain control pressure at the pressure control connection when the purge valve connection of the purge valve in the purge line is open independently ...

SELF-CLEANING DISC VALVE FOR PISTON PUMP

Embodiments of the present disclosure generally provide a disc-valve design with a self-cleaning feature. The self-cleaning feature may be integrated into the valve, for example, by removing a “cut-out” portion between sealing surfaces of ports. These cut-out portions may create vortices that might clean debris from the sealing surfaces. The cut-outs may also provide a place for debris to collect-keeping it away from the sealing surfaces. In addition, or as an alternative to cut-outs, some other type of mechanism, such as sealing members designed to disturb flow to sweep away debris near a sealing surface or helical grooves (rifling) formed in the ports, may also be used to promote self-cleaning. 1. A valve assembly comprising:a valve body with at least a first set of one or more ports that form fluid pathways from a first surface of the valve body to a second surface of the valve body;a first disc-plate with sealing members configured to seal the first set of ports at the first surface of the valve body when in a closed position; anda self-cleaning mechanism configured to cause a disturbance in fluid flow within or near the valve body when the first disc-plate moves relative to the first surface of the valve body to seal or unseal the ports, wherein the disturbance in the fluid flow is sufficient to at least one of impede, remove, or displace debris buildup on a surface of the valve body where the sealing members contact.2. The valve assembly of claim 1 , wherein:the self-cleaning mechanism comprises one or more cut-outs formed on a surface of the valve body in proximity to one or more ports.3. The valve assembly of claim 2 , wherein the one or more cut-outs are configured to allow for deposits of debris.4. The valve assembly of claim 1 , wherein the self-cleaning mechanism comprises helical grooves disposed in a wall of at least one port of the first or second set of ports claim 1 , the helical grooves designed to impart vortices in fluid flowing in the port.5. ...

Front fork

A front fork includes a body side tube, an axle side tube, a damper, a reservoir, a damping force adjusting flow passage, and a solenoid valve including a spool housing portion provided at an intermediate position of the damping force adjusting flow passage, a spool valve inserted into the spool housing portion movably in an axial direction, and a solenoid that drives the spool valve in an axial direction, and configured to adjust a flow passage area of the damping force adjusting flow passage. Pressure receiving areas on opposite axial sides of the spool valve on which a pressure in an upstream side of the damping force adjusting flow passage acts are made equal. An upper arrangement passage which is arranged at least higher than the upper end of the spool housing portion is provided in a downstream side of the damping force adjusting flow passage.

LIQUID NITROGEN PUMP EQUIPMENT LOAD TESTING AND EXPERIMENTING APPARATUS AND TESTING AND EXPERIMENTING METHOD THEREOF

The disclosure relates to liquid nitrogen pump equipment load testing and experimenting apparatus, and testing and experimenting method thereof, used for oil-gas fields or coalbed methane nitrogen foam fracturing equipment testing. A hydraulic damping apparatus unit and a pressure regulation unit are provided; the hydro-mechanical damping apparatus unit comprises a water tank, a pump unit apparatus, and a pipe manifold system connected in sequence. 1. An apparatus for loading test and experiment of liquid nitrogen pump equipments , comprising:a liquid nitrogen tank comprising an outlet pipeline and a tested liquid nitrogen pump equipment, wherein said liquid nitrogen pump equipment is arranged on the outlet pipeline of the liquid nitrogen tank and pumps liquid nitrogen at the low pressure and low temperature stored in the liquid nitrogen tank and converts it into gaseous nitrogen at normal temperature and high pressure,a hydraulic damping apparatus unit comprising a water tank comprising an outlet pipeline, pump set equipment, and a manifold system which are connected in sequence, wherein said manifold system mixes the gaseous nitrogen at normal temperature and high pressure from the liquid nitrogen pump equipment with high pressure water from the pump set equipment to form a high pressure liquid-gas mixture; anda pressure adjusting unit arranged downstream from the hydraulic damping apparatus unit, which pressurizes the water discharged from the hydraulic damping apparatus unit by adjusting the flow rate of the high pressure liquid-gas mixture.2. The apparatus for loading test and experiment of liquid nitrogen pump equipments according to claim 1 , wherein claim 1 , said pressure adjusting unit comprises at least one adjusting units claim 1 , which are connected with each other claim 1 , and subsequent water recycling equipments claim 1 , wherein each of said adjusting units further comprises the following parts which are connected in sequence claim 1 ,a liquid-gas ...

DISPOSABLE PUMPING SYSTEM AND COUPLER

A coupling system for receiving a push rod includes a housing defining an internal channel having a sloped wall, and a piston received within the internal channel. The piston includes at least one flexible member arranged within the channel to be acted upon by the sloped wall to engage the push rod. The only external force required to couple the push rod is an axial force on the piston in a direction. The only external force required to de-couple the push rod is an axial force on the piston in an opposite direction. 1. (canceled)2. A pump system , comprising:a pump console housing a push rod, a motor and a transmission for driving the push rod in an axially reciprocal motion, the console including a pump interface;a disposable pump configured to removably mate with the pump interface by advancing the disposable pump in an axial direction corresponding to the axis of reciprocal motion of the push rod, the disposable pump including a housing having an inflow section defining an inflow chamber, and an outflow section defining an outflow chamber, the inflow section and the outflow section being located side-by-side in the housing, an inflow valve located in the inflow chamber and an outflow valve located in the outflow chamber, the housing defining an internal channel axially aligned with and in fluid communication with the inflow section and the outflow section, and a piston located within the internal channel and configured to mate with the push rod for axial reciprocal movement therewith to pump fluid from the inflow section into the channel and from the channel into the outflow section;a fluid inlet line to the inflow section of the disposable pump; anda fluid outlet line from the outflow section of the disposable pump.3. The pump system of wherein the internal channel has a sloped wall.4. The pump system of wherein the piston includes at least one flexible member arranged within the channel to be acted upon by the sloped wall to engage the push rod.5. The pump ...

PUMP ASSEMBLY INCLUDING FLUID CYLINDER AND TAPERED VALVE SEATS

According to one aspect, a pump assembly includes a fluid cylinder, the fluid cylinder including a fluid passage, the fluid passage defining a tapered internal shoulder of the fluid cylinder, the tapered internal shoulder defining a first angle. A valve controls flow of fluid through the fluid passage. The valve includes a valve seat, which is disposed in the fluid passage and includes a tapered external shoulder, the tapered external shoulder defining a second angle. In one embodiment, the first tapered external shoulder engages the first tapered internal shoulder to distribute and transfer loading. 1. A pump assembly , comprising:a fluid cylinder having a first axis, the fluid cylinder comprising a first fluid passage through which fluid is adapted to flow along the first axis, the first fluid passage defining a first tapered internal shoulder of the fluid cylinder, the first tapered internal shoulder defining a first angle from the first axis; anda first valve to control flow of fluid through the first fluid passage, the first valve comprising a first valve seat disposed in the first fluid passage, the first valve seat having a second axis that is aligned with the first axis, the first valve seat comprising a first tapered external shoulder, the first tapered external shoulder defining a second angle from the second axis;wherein each of the first and second angles ranges from about 10 degrees to about 45 degrees measured from the first axis and the second axis aligned therewith.2. The pump assembly of claim 1 , wherein the first tapered internal shoulder and the first tapered external shoulder define first and second frusto-conical surfaces claim 1 , respectively; andwherein the first tapered internal shoulder engages the first tapered external shoulder to distribute and transfer loading between the first and second frusto-conical surfaces.3. The pump assembly of claim 1 , wherein the first and second angles are equal.4. The pump assembly of claim 3 , wherein ...

PUMP FLUID CYLINDER INCLUDING LOAD TRANSFER SHOULDER AND VALVE SEAT FOR SAME

According to one aspect, a pump assembly includes a fluid cylinder, and the fluid cylinder includes a fluid passage that defines a tapered internal shoulder of the fluid cylinder. The tapered internal shoulder defines a first frusto-conical surface. A valve controls flow of fluid through the fluid passage. The valve includes a valve seat, which includes a seat body disposed in the fluid passage, and a bore formed through the seat body and through which fluid flows. The seat body includes inlet and outlet end portions, wherein the fluid flows into the bore at the inlet end portion and flows out of the bore at the outlet end portion. The inlet end portion of the seat body defines a second frusto-conical surface. In one embodiment, the second frusto-conical surface engages the first frusto-conical surface to distribute and transfer loading. 1. A pump assembly , comprising:a fluid cylinder having a first axis and a second axis perpendicular thereto, the fluid cylinder comprising a first fluid passage through which fluid flows along the first axis, the first fluid passage defining a first tapered internal shoulder of the fluid cylinder, the first tapered internal shoulder defining a first frusto-conical surface, the first frusto-conical surface defining a first angle from the second axis; and a seat body comprising an inlet end portion and an outlet end portion opposed thereto along the first axis, the inlet end portion of the seat body defining a second frusto-conical surface, the second frusto-conical surface defining a second angle from the second axis; and', 'a bore formed through the seat body and through which fluid flows in a direction along the first axis and perpendicular to the second axis;, 'a first valve to control flow of fluid through the first fluid passage, the first valve comprising a first valve seat disposed in the first fluid passage, the first valve seat comprisingwherein the fluid flows into the bore at the inlet end portion of the seat body and ...

HYDRAULIC CONTROL SYSTEM

The invention relates to a hydraulic system comprising a source of high pressure (A), a consumer (C) connectable to the source of high pressure (A) via a flow control valve (), and a solenoid valve () arranged to control the flow control valve (). The hydraulic system further comprises a hydraulic pilot valve () selectively controllable by the solenoid valve () to connect a control chamber () in the flow control valve () either to the source of high pressure (A) or to a low pressure side (T). When the solenoid valve () is actuated, the consumer (C) is pre-pressurized via a by-pass conduit prior to the opening of the flow control valve (). At the same time, the source of high pressure (A) is arranged to act on a first and a second end () of the hydraulic pilot valve () wherein a spring () is arranged to displace the hydraulic pilot valve () and connect the control chamber () to the low pressure side (T) to open the flow control valve (). 1. Hydraulic system comprising:a source of high pressure (A),a consumer (C) connectable to the source of high pressure (A) via a flow control valve, anda solenoid valve arranged to control the flow control valve, wherein the hydraulic system further comprises:a hydraulic pilot valve that is selectively controllable by the solenoid valve to connect a control chamber in the flow control valve either to the source of high pressure (A) or to a low pressure side (T),wherein the hydraulic pilot valve configured so that when the solenoid valve is in its first position, the source of high pressure (A) is arranged to act on a first end of the hydraulic pilot valve to hold the hydraulic pilot valve in a first position wherein the control chamber is connected to the source of high pressure (A) and the flow control valve prevents flow from the source of high pressure (A) to the consumer (C),wherein the hydraulic pilot valve configured so that when the solenoid valve is in its second position, the solenoid valve is arranged to connect the source ...

Hydraulic Working Machine

An exhaust gas temperature raising processing system, which increases a load acting on an engine to raise the exhaust gas temperature, includes an electric assist motor connected to the engine and an inverter for adjusting a torque of the electric assist motor. It also includes a main controller having a first determination unit for determining whether or not an actuator control valve is in a non-feed state and a second determination unit for determining whether or not clogging has occurred on a filter of an exhaust gas purification system. When the non-feed state is determined by the first determination unit and clogging is determined to have occurred on the filter by the second determination unit, the main controller drives the electric assist motor to generate electric power such that a load acting on the engine is increased. 1. A hydraulic working machine provided with an engine , a variable displacement hydraulic pump drivable by power transmitted from the engine , a hydraulic actuator drivable by pressure oil delivered from the variable displacement hydraulic pump , an actuator control valve for controlling a flow of pressure oil , which is to be fed from the variable displacement hydraulic pump to the hydraulic actuator , to permit switching between a feed state in which pressure oil delivered from the variable displacement hydraulic pump is to be fed to the hydraulic actuator and a non-feed state in which the pressure oil is returned to a hydraulic oil reservoir without feeding the pressure oil to the hydraulic actuator , an exhaust gas purification system having a filter for trapping particulate matter in exhaust gas produced from the engine , and an exhaust gas temperature raising processing means for performing , when the actuator control valve is in the non-feed state and clogging has occurred on the filter , processing to increase a load acting on the engine such that a temperature of the exhaust gas is raised to a temperature needed to burn the ...

MECHANICAL PUMPING HYDRAULIC UNIT

The present invention relates to an improved mechanical pumping hydraulic unit for use in oil production or hydrocarbon extraction. The unit is characterized in that it has one motor (-), which activates a dual pump (-) at one end of the shaft and activates a fan (-) at the opposite end of the same shaft. The dual pump (-) provides power to the hydraulic power circuit (-) and to the hydraulic recirculation circuit (-). The motor (-), along with the pump (-) and the fan (-), are inside a metal structure (-), or focusing element, which serves to propel air sent by the fan (-) through the radiator (--) and to protect all the components of said unit, such as a tank (-) for the hydraulic oil, a compartment or casing for the electrical components (-), and a component or dry chamber (-) for the hydraulic instrument panel (-). 2112511512618. Mechanical pumping hydraulic unit , in accordance with , characterized because said motor (-) , said dual pump (-) and said fan (-) are contained within a compact structure (-).321813151217. Mechanical pumping hydraulic unit , in accordance with , characterized because said structure (-) also contains a tank for the hydraulic oil (-) , a compartment or casing for the electrical components (-) and a compartment or dry chamber (-) for the hydraulic instrument panel (-).418. Mechanical pumping hydraulic unit claim 3 , in accordance with claim 3 , characterized because all its electrical connections are contained within said structure (-).5181134113211331131113611351137. Mechanical pumping hydraulic unit claim 1 , in accordance with claim 1 , characterized because said structure (-) contains a flow control check valve (--) claim 1 , a piloted pressure control valve (--) claim 1 , a solenoid valve (--) claim 1 , a check (--) claim 1 , a shutoff valve (--) claim 1 , a tee coupling (--) claim 1 , and a high-pressure manometer (--) that belong to the hydraulic power circuit.618114111431142. Mechanical pumping hydraulic unit claim 5 , in ...

Hydraulic Oil Cylinder, Correlative Device Thereof, Hydraulic Cushion System, Excavator And Concrete Pump Truck

A hydraulic oil cylinder has a cushion collar, which is sleeved in the cushion position of a piston rod and can axially slide along the piston rod. In the oil cylinder cavity between an oil hole of the rod cavity and the terminal position of the piston end surface of the rod cavity during the piston extending movement, a sealing end surface of the rod cavity is provided, which can block the cushion collar and contact with the first end surface of the cushion collar to form a sealing surface. At least a throttle oil channel is provided between the cushion collar and the piston rod.

ELASTOMERIC SIGNAL TRANSMISSION AND MOTION AMPLIFICATION

A system and method to amplify displacement includes a housing forming a cylindrical chamber having an elastomeric material disposed therein. The chamber being sealed with a first membrane and a second membrane. The first membrane being attached to a first end having and the second membrane being attached to a second end, the first end having a greater diameter than the second end. The method including producing an input displacement with a driver attached to the first membrane, which in turn results in an amplified output displacement at the second end. 1. A system to amplify displacement motion , the system comprising: a first end and an opposing second end, each end having a diameter, the first end having a greater diameter than the diameter of the second end; and', 'an inner surface;, 'a housing forming a cylindrical chamber, the chamber havinga first membrane sealably attached to the inner surface at the first end;a second membrane sealably attached to the inner surface at the second end;an elastic material disposed within the chamber, the elastic material filling an entire volume of the chamber; and 'a driver coupled to the first membrane;', 'a drive subsystem, havingwherein the driver exerts a force on the first membrane, which in turn creates an input displacement;wherein the input displacement is amplified as the elastic material flows from the first end to the second end, which in turn results in an output displacement at the second end; andwherein the output displacement is greater than the input displacement.2. The system of claim 1 , wherein the second membrane is coupled to a working element.3. The system of claim 2 , wherein the working element is an edge flap carried by a rotor blade.4. The system of claim 2 , wherein the working element is a leading edge droop carried by a rotor blade.5. The system of claim 1 , wherein the driver is a piezoelectric motor.6. An aircraft claim 1 , comprising: [ a first end and an opposing second end, each end having a ...

Rotating compressor valve

As described in detail below, the disclosed embodiments include a rotating compressor valve having stationary front and rear plates (e.g., guards) and a rotating plate configured to rotate relative to the stationary front and rear plates. The stationary front and rear plates and the rotating plate all include a plurality of slots which, when aligned, allow a process fluid (e.g., natural gas) to flow through the rotating compressor valve. In certain embodiments, the slots of the rotating plate include an arc radius that is smaller than an arc radius of the slots of the stationary front and rear plates.

DEVICE FOR THROTTLING A FLUID FLOW, AND CORRESPONDING PISTON PUMP FOR DELIVERING FLUIDS

A device for throttling a fluid flow includes a basic body which has at least one throttle point with a predefinable opening cross section. The basic body has a resilient configuration at least in a region of the at least one throttle point. Accordingly, the opening cross section of the at least one throttle point is configured to be set in a variable manner as a function of a pressure difference. 1. A device for throttling a fluid flow , comprising:a basic body which includes at least one throttle point having a predefinable opening cross section, wherein the basic body has a resilient configuration at least in a region of the at least one throttle point, so that the opening cross section of the at least one throttle point is variably adjustable as a function of a pressure difference.2. The device as claimed in claim 1 , wherein the basic body has in the region of the at least one throttle point at least one spring arm configured to adjust the opening cross section of the at least one throttle point as a function of the pressure difference.3. The device as claimed in claim 1 , the at least one throttle point has at least one of a minimum opening cross section and a maximum opening cross section independent of the pressure difference.4. The device as claimed in claim 3 , wherein the minimum opening cross section of the at least one throttle point is optimized to a volume flow within a predetermined temperature range.5. The device as claimed in claim 1 , wherein a dynamic behavior of the opening cross section of the at least one throttle point is configured to change during pressure difference changes according to at least one of selected spring characteristics claim 1 , a selected structural shape of the basic body claim 1 , and a selected structural shape of the at least one throttle point.6. The device as claimed in claim 1 , wherein:the basic body is an open ring having two spring arms, andends of the two spring arms determine a shape of the throttle point.7. The ...

SWASH PLATE TYPE COMPRESSOR

A swash plate type compressor arranged with a swash plate which rotates around a shaft a piston which moves back and forth with the rotation of the swash plate and formed with a spherical indent part and a shoe formed with a flat part which slides against the swash plate and a spherical surface part which slides in the spherical indent part formed on the piston wherein a coating layer comprised s formed on the surface of the swash plate and spiral or concentric shaped grooves are formed with the center of the swash plate at the center on the surface of the coating layer a diameter of the flat part is set at 10.5 mm or less, and the pitch of the concentric protrusion is set so that the sum of the length of the concentric protrusions which contact the flat part is 300 mm or more. It is possible to reduce friction between the shoe and the swash plate by reducing the diameter of the flat part of the shoe and it is possible to reduce wear of the coating layer. 2. The swash plate type compressor according to claim 1 , wherein a taper part is formed so as to surround the flat part and the flat part and the taper part are connected by a smooth surface. The present invention relates to a swash plate type compressor, and relates to a swash plate type compressor arranged with a swash plate which rotates around a shaft, a piston which moves back and forth with the rotation of the swash plate, and a shoe formed with a flat part which slides against the swash plate and a spherical surface part which slides in a spherical groove part formed on the piston.Conventionally, a swash plate type compressor is known arranged with a swash plate which rotates around a shaft, a piston which moves back and forth with the rotation of the swash plate, and a shoe formed with a flat part which slides against the swash plate and a spherical surface part which slides in a spherical groove part formed on the piston (patent documents 1, 2).A coating layer comprised from a resin is formed on the ...

Liquid Lift Pumps for Gas Wells

A wellbore liquid lift pump includes a pump chamber disposed in a wellbore at a selected longitudinal position and within a liquid column therein. The pump chamber has one way valves proximate each longitudinal end thereof. One of the one way valves is in fluid communication with the liquid column. The other one way valve is in fluid communication with a conduit extending from the pump chamber to the surface. The pump includes means for displacing a volume of the pump chamber by application of pressure thereto. The pressure provided by at least one of a gas and a liquid having a density lower than liquid within the liquid column. 1. A wellbore liquid lift pump , comprising:a pump chamber disposed in a wellbore at a selected longitudinal position and within a liquid column therein, the pump chamber having one way valves proximate each longitudinal end thereof, one of the one way valves in fluid communication with the liquid column, the other one way valve in fluid communication with a conduit extending from the pump chamber to the surface; andmeans for displacing a volume of the pump chamber by application of pressure thereto, the pressure provided by at least one of a gas and a liquid having a density lower than liquid within the liquid column.2. The wellbore liquid lift pump of wherein the means for displacing comprises an inflatable bladder.3. The wellbore liquid lift pump of wherein the pressure is applied through a tube in fluid communication with an interior of the bladder claim 2 , the tube extending to the surface.4. The wellbore liquid lift pump of wherein the means for displacing comprises a steam generator.5. The wellbore liquid lift pump of wherein the steam generator comprises a least one electrically operated heating element.6. A method for lifting liquid out of a wellbore drilled through subsurface formations claim 4 , comprising:applying pressure to displace a volume of a chamber disposed in a liquid column in the wellbore, the displacing constrained ...

ENGINE HAVING OIL PUMP

In an engine having an oil pump wherein an oil filter is incorporated into the oil pump without allowing the oil pump to become large in size. An oil pump and a hydraulic line changeover valve including a spool valve are disposed so as to have axes extending in parallel with each other. The oil pump has a plate-shaped oil filter disposed at a discharge port thereof. The plate-shaped oil filter is curved arcuately along an outer periphery of a pump rotor as viewed from a pump axial direction. 1. An engine having an oil pump with a trochoidal tooth profile , the oil pump comprising:pump sections; anda hydraulic pressure regulating valve for regulating hydraulic pressure supplied from the pump sections to a hydraulic pressure supply destination, wherein:the hydraulic pressure regulating valve includes a spool valve and the pump sections and the hydraulic pressure regulating valve are disposed so as to have axes extending in parallel with each other; andthe pump sections have a plate-shaped oil filter disposed at either one of discharge ports and suction ports, the plate-shaped oil filter being curved arcuately along an outer periphery of pump rotors as viewed from an axial direction of the pump sections.2. The engine having an oil pump according to claim 1 , wherein the plate-shaped oil filter is disposed between the pump sections and the hydraulic pressure regulating valve.3. The engine having an oil pump according to claim 1 , wherein the plate-shaped oil filter is formed into an arcuate shape coaxial with outer rotors of the pump rotors of the pump sections.4. The engine having an oil pump according to claim 1 , wherein the plate-shaped oil filter comprises a strainer having an outer periphery surrounded by an outer peripheral frame formed of an elastic material.5. The engine having an oil pump according to claim 2 , wherein the plate-shaped oil filter comprises a strainer having an outer periphery surrounded by an outer peripheral frame formed of an elastic ...

MICROSYSTEMS FOR COMPRESSING OR FOR CONVERTING A PRESSURE DIFFERENCE INTO A DISPLACEMENT

A microsystem for converting pressure difference in fluid into mechanical displacement includes input and output nozzles, two interleaved parts, one of which is mobile part, between which the fluid flows. During displacement, the parts define an expanding fluid pocket that moves from the input nozzle to the output nozzle. The microsystem also includes top and bottom planes between which the mobile part is mounted for displacement relative to each plane, an overhanging distal portion along which the fluid flows, and a proximal portion mechanically linked to a plane via a link allowing only longitudinal translation of the proximal portion, and a reinforcement including a first side fastened to one of the planes and, a second side that is either fastened to or in sliding contact with the overhanging distal portion of the mobile part to limit its deformation in a transverse direction perpendicular to the longitudinal direction. 113-. (canceled)14. An apparatus comprising a microsystem for converting a pressure difference in a flowing fluid into a mechanical displacement according to the principle of an expansion valve , wherein said microsystem comprises an input nozzle for receiving said fluid , said fluid being a compressed fluid at said input nozzle , an output nozzle for outputting said fluid , said fluid being an expanded fluid at said output nozzle , at least two parts , at least one of which is a mobile part , between which said fluid flows to pass from said input nozzle to said output nozzle by displacing said at least two parts relative to one another , said at least two parts being shaped and interleaved one inside the other so that , during displacement thereof , said at least two parts define at least one pocket of fluid that concurrently increases in volume and moves away from said input nozzle to then meet said output nozzle , a top plane and a bottom plane between which said mobile part is inserted , said top plane and said bottom plane containing between ...

Relief Pressure Control Device for Hydraulic Work Machine

A relief pressure control system is provided with a controller for outputting, responsive to an adjustment signal output from a dial switch, a control signal to control a relief pressure of a variable solenoid relief valve, a display unit for displaying, responsive to display signals outputted from the controller, a relationship between a circuit pressure output from a pressure sensor and a pressure required by a hydraulic cylinder, and a control device constituting a start instruction unit for instructing a start of control of the variable solenoid relief valve. Stop valves are arranged in sections of main lines, which communicate a directional control valve and the hydraulic cylinder with each other, to open or close the section. The sections are located between positions on the main lines, where the variable solenoid relief valves are connected to the main lines, respectively, and the hydraulic cylinder.

High-pressure pump

A high-pressure pump includes a plunger capable of reciprocating, and a housing having a pressurizing chamber in which fuel is pressurized by the plunger, and a fuel chamber through which the fuel flows toward and from the pressurizing chamber. The pump includes a spring that biases the plunger so as to increase the volume of the pressurizing chamber, and a spring seat that is fixed to the housing and is in contact with one end of the spring. A first space that communicates with the fuel chamber via a fuel passage is provided between the bottom of the spring seat and the housing, and a top face of the bottom exposed to the first space is covered with a heating insulating member.

Gas compression system

A gas compression system includes at least one first compressor provided with at least one first cylinder and one second cylinder that are combined together such that a gas to be compressed, which is taken into the first cylinder at an intake pressure, is compressed by the intake of an engine gas to the second cylinder. The system further includes a pressure checking device to check the pressure of the engine gas during the feeding thereof into the second cylinder. The pressure checking device includes a pressure detector for measuring the pressure of the gas to be compressed during the intake thereof to the first cylinder; and a regulator for adjusting the flow rate of the engine gas in the second cylinder such that the pressure of the gas to be compressed is constant during the intake thereof to the first cylinder.

ARRANGEMENT FOR THROTTLING A FLUID FLOW, AND CORRESPONDING PISTON PUMP FOR DELIVERING FLUIDS

An arrangement for throttling a fluid flow includes a throttle element arranged so as to influence a flow cross section in a fluid duct. The throttle element has a resiliently elastic disc-shaped basic body which is arranged with a top side and a bottom side between at least two supports in the fluid duct. The body is arranged in such a way that the flow cross section can be variably adjusted as a function of a pressure difference between the top side and the bottom side of the resiliently elastic disc-shaped basic body. At least one support bears against the top side of the resiliently elastic disc-shaped basic body, and at least one support bears against the bottom side of the resiliently elastic disc-shaped basic body. 1. An arrangement for throttling a fluid flow comprising: the resilient disk-shaped main body is arranged with the upper side and the underside between at least two supports in the fluid duct such that the flow cross section is variably adjustable according to a pressure difference between the upper side and the underside of the resilient disk-shaped main body,', 'at least one support of the at least two supports is configured to bear against the upper side of the resilient disk-shaped main body, and', 'at least one support of the at least two supports is configured to bear against the underside of the resilient disk-shaped main body., 'a throttle element arranged in a fluid duct to influence a flow cross section, the throttle element including a resilient disk-shaped main body with an upper side and an underside, wherein2. The arrangement as claimed in claim 1 , wherein:the resilient disk-shaped main body has a first opening configured to allow fluid to flow therethrough, andwhen one of the upper side and the underside of the resilient disk-shaped main body is raised, fluid flows via one of through the first opening in the resilient disk-shaped main body and around the resilient disk-shaped main body.3. The arrangement as claimed in claim 1 , ...

Double acting refrigeration compressor

The refrigeration compressor is a double-acting refrigeration compressor, comprising a piston which is freely guided on two cylinder sections that are opposite each other and that cannot be moved relative to each other, and which has a flow channel that extends internally through the piston, wherein each cylinder section and the piston have at least one check valve along the flow channel, wherein the check valves are arranged in such a way that the flow directions thereof are oriented in the same direction.

PUMP AND METHOD FOR ITS MANUFACTURE

A method for manufacturing a pump, in particular for a vehicle brake system, includes forming a blind hole in a pump housing starting from a region in the pump housing in which an eccentric opening is provided to accommodate a drive eccentric. The method further includes inserting a pump cylinder into the blind hole from the region of the eccentric opening and securing the pump cylinder in the blind hole from the region of the eccentric opening. A pump is constructed from the method. 1. A pump , comprising:a pump housing forming a blind hole, the blind hole being formed starting from a region in the pump housing in which an eccentric opening is configured to receive a drive eccentric; anda pump cylinder inserted into the blind hole from the region of the eccentric opening, said pump cylinder being fixed in the blind hole from the region of the eccentric opening.2. The pump as claimed in claim 1 , wherein components of an outlet valve are arranged between a base of the blind hole.3. The pump as claimed in claim 1 , wherein the pump cylinder is a deep-drawn part.4. The pump as claimed in claim 1 , wherein the pump cylinder is formed in a cup shape with an annular wall and a base surface.5. The pump as claimed in claim 1 , wherein the pump cylinder is formed with an annular disc facing the region of the eccentric opening.6. The pump as claimed in claim 1 , wherein the pump cylinder is fixed by a guide ring placed in the blind hole and configured to axially guide a pump piston displaceable in the pump cylinder.7. A method for manufacturing a pump claim 1 , comprising:forming a blind hole in a pump housing, the forming of the blind hole starting from a region in the pump housing in which an eccentric opening is configured to receive a drive eccentric;inserting a pump cylinder into the blind hole from the region of the eccentric opening; andfixing the pump cylinder in the blind hole from the region of the eccentric opening.8. The method as claimed in claim 7 , further ...

LOW RESIDUAL INVERTED PUMPS, DISPENSERS AND REFILL UNITS

A foam pump including a housing and a piston that reciprocates within the housing is disclosed herein. The piston has a hollow portion and an orifice through the wall of the piston. A first seal located proximate the upper end of the piston provides a seal between the piston and the housing. A liquid inlet is located in the side wall of the housing at a point lower than the top of the piston. A one-way liquid inlet valve is located proximate the liquid inlet and a one-way liquid outlet valve is located prior to the liquid outlet. A charge chamber is defined at least in part by the liquid inlet valve, the liquid outlet valve, a wall of the piston and a wall of the housing. 1. A pull pump comprising:a housing;a piston that reciprocates within the housing;the piston having an outer wall and at least a portion of the center of the piston is hollow;the piston includes an orifice form the outer wall to the center of the piston;a first seal is located proximate the upper end of the piston to provide a seal between the piston and the housing;the first seal is located above the orifice in the piston wall;a liquid inlet in the side wall of the housing at a point lower than the top of the piston;a one-way liquid inlet valve;a liquid outlet having a one-way liquid outlet valve;a charge chamber defined at least in part by the one-way liquid inlet valve, the one-way liquid outlet valve, a wall of the housing and a wall of the piston; anda mixing chamber located downstream of the one-way liquid outlet valve;wherein the charge chamber is dispensed by pulling the piston downward and recharged by moving the piston upward.2. The pull pump of further comprising an air inlet in fluid communication with the liquid outlet and a foaming element located downstream of the air inlet and the liquid outlet.3. The pull pump of wherein the liquid inlet valve is lower than the liquid outlet valve.4. The pull pump of further comprising:a container for holding a fluid;a neck formed in the container; ...

VALVE ACCELERATING TYPE DISPENSING PUMP

A dispensing pump, and more particularly, a valve accelerating type dispensing pump that may be used in a process of manufacturing an electronic product and may dispense an accurate amount of a liquid, such as a liquid synthetic resin, at high speed. The present invention provides a valve accelerating type dispensing pump that can descend a valve rod at high speed and thus can dispense a liquid with high viscosity at high speed. The valve accelerating type dispensing pump can dispense an accurate amount of a liquid at high speed. Also, the valve accelerating type dispensing pump can dispense a liquid having high viscosity at high speed due to a fast descending speed of a valve rod. 1. A valve accelerating type dispensing pump comprising:a pump body;a valve body comprising an inlet path on which a liquid from an outside is supplied, a reservoir in which the liquid supplied via the inlet path is stored, and a discharge path on which the liquid stored in the reservoir is discharged, the valve body being installed at the pump body;a valve rod pressurizing the liquid stored in the reservoir of the valve body and inserted in the reservoir of the valve body so that the liquid is discharged via the discharge path;an operating rod connected to the valve rod and allowing the valve rod to move relative to the valve body;a cam member comprising through hole through which the operating rod passes and cam protrusions formed along a circumferential direction of the cam member based on the through hole and having inclined surfaces formed so that a height of the cam protrusions increases, the cam member being installed at the pump body so that the cam member rotates around the through hole;a rotating unit rotating the cam member;a cam follower comprising rollers that roll on the inclined surfaces of the cam protrusions when the cam member rotates, the cam follower coupled to the operating rod and allowing the valve rod to move relative to the valve body;an accelerating member ...

Hydraulic axial piston pump able to operate in both directions

A hydraulic pump rotates in both directions of rotation, and includes a casing, a common drive shaft mounted so as to be able to rotate relative to the casing, two swashplates borne by the common drive shaft, these two swashplates being symmetric and opposite each other and each including one supply crescent, a respective hollow piston pressing against each swashplate via the intermediary of a slipper shoe and designed to slide in a respective cylinder connected to the casing, the crescent of the swashplate being in each case arranged so as to pass over the hollow piston during a suction phase of the hollow piston, each cylinder being fitted with a check valve on the discharge side, such that only one of the two swashplates provides an output when the drive shaft rotates in one direction, the other swashplate providing an output when the shaft rotates in the other direction.

DRAWBACK CHECK VALVE

A valve for a pump arrangement which serves on one hand as a one-way outlet valve subject to functioning, after fluid has been dispensed, of drawing back some fluid which has been dispensed. 2. A combination as claimed in wherein the tube upstream portion being circular in cross section normal to the axis claim 1 , the tube upstream portion having a diameterthe tube downstream portion being circular in cross-section normal to the axis, the tube downstream portion having a diameter greater than the diameter of the tube upstream portion.3. A combination as claimed in wherein the edge portion of the piston head member is circular in cross-section normal to the axis claim 2 ,the edge portion having a diameter less than the diameter of the tube upstream portion.4. A combination as claimed in wherein the edge portion of the piston head member is elastically deformable between an unbiased condition and biased conditions wherein in the unbiased condition the edge portion engages the tube inner wall to prevent fluid flow therepast and in the biased conditions the edge portion elastically deflects away the tube inner wall to permit fluid flow therepast.5. A combination as claimed in wherein the edge portion of the piston head member is elastically deformable from the unbiased condition toward biased conditions however provided that the pressure differential is less than or equal to the first pressure level while the edge portion is in the tube first portion the edge portion prevents fluid flow in the passageway in either direction therepast6. A combination as claimed in wherein the edge portion of the piston head member is elastically deformable from the unbiased condition toward biased positions however provided that the pressure differential is greater than the first pressure level while the edge portion is in the tube second portion the edge portion permits fluid flow in the passageway in the downstream direction therepast.7. A combination as claimed in wherein in ...

High-pressure pump

Between a movable core chamber and a fuel supply passage, a needle guide slidably supports a needle fixed to a movable core. The needle guide has a communication hole which fluidly connects the movable core chamber and the fuel supply passage. An opening sectional area of the communication hole is defined in such a manner that a fuel discharged amount decreases as an energization start time of a coil is delayed. In a suction stroke, it is restricted that the movable core and the needle bounce toward the fixed core after the needle biases a suction valve toward a stopper by means of a biasing force of a second spring. A relationship between the energization start time of the coil and the fuel discharged amount is properly maintained, so that the fuel discharged amount of the high-pressure pump can be controlled correctly.

Shock Absorbers

A damping unit, such as a shock absorber, includes a cylinder (), a piston () dividing the cylinder into a compression chamber and a rebound chamber (), and a piston rod (). The rod extends from the piston through at least the rebound chamber. The compression chamber reduces in volume and the rebound chamber increases in volume as the damping unit contracts generating a compression flow across the piston, and the rebound chamber reduces in volume and the compression chamber increases in volume as the damping unit extends, generating a rebound flow across the piston. The piston has a compression chamber piston face and an annular rebound chamber piston face. At least one rebound restriction is provided in or on the piston, such as one or more rebound ports ()/passages/valving (), and at least one compression restriction, such as one or more compression ports passages/valving () is provided in or on the piston. The rod has at least one channel () in an outer surface of the rod extending along a portion of the length of the rod towards/into the piston such that at least a portion of the rebound flow across the piston flows from the rebound chamber, along said at least one channel, through the rebound restriction into the compression chamber. 1. A damping unit including a cylinder , a piston dividing the cylinder into a compression chamber and a rebound chamber , and a rod with an outer surface and a length , the rod extending from the piston through at least the rebound chamber ,the compression chamber reducing in volume and the rebound chamber increasing in volume as the damping unit contracts generating a compression flow across the piston, the rebound chamber reducing in volume and the compression chamber increasing in volume as the damping unit extends, generating a rebound flow across the piston,the piston having a compression chamber piston face and an annular rebound chamber piston face,rebound valving is located on the compression chamber piston face, ...

Patch-sized fluid delivery systems and methods

A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.

HIGH PRESSURE PUMP WITH REDUCED SEAL WEAR

Described are embodiments of a pump that can be used, for example, in liquid chromatography applications. The pump includes a seal wash housing, pump head and seal assembly. A wear-resistant coating applied to a sealing surface or gland of the pump head or seal wash housing improves the hardness and chemical compatibility of the sealing surface. Oxidation of the sealing surface is reduced so that the sealing surface is less abrasive to the seal assembly and the lifetime of the seal assembly is increased. 1. A pump comprising:a seal wash housing having a pair of opposing surfaces, a gland and a bore that extends between the surfaces and through the gland;a pump head having a sealing surface abutting one of the surfaces of the seal wash housing and having a chamber extending from a first opening in the sealing surface;a seal assembly disposed in the gland of the seal wash housing and having a sealing surface abutting the sealing surface of the pump head; anda wear-resistant coating disposed on the sealing surface of the pump head at least in a surface region where the sealing surface of the seal assembly abuts the sealing surface of the pump head.2. The pump of wherein the wear-resistant coating comprises a diamond like carbon (DLC) coating.3. The pump of wherein the wear-resistant coating comprises a titanium coating.4. The pump of wherein the surface region where the sealing surface of the seal assembly abuts the sealing surface of the pump head is a region that encloses the first opening.5. The pump of wherein the sealing surface of the pump head has a second opening and wherein the sealing surface of the seal assembly abuts the sealing surface of the pump head in a surface region that encloses the first and second openings.6. The pump of wherein the pump head further comprises a first fluidic channel configured to supply a fluid from an inlet port to the chamber and a second fluid channel configured to pass a fluid from the second opening in the sealing surface of ...

Pump for transfer of liquids containing suspended solids

A pump for transferring liquids containing suspended solids comprises a bellows-type chamber retractable and extendable by a reciprocating drive means. The pump is fed by feed stock inflow controlled by a flexible tubular pinch-type valve, and propelled out of the chamber through a substantially identical pinch-type valve. Programmed control means is inadequate to properly regulate volume of flow, and independently interventional means are disclosed to correct aberrant pump cycles.

Pump Unit For Water Jet Surgery

The pump unit according to the invention encompasses at least two piston pumps, which include pump cylinders and pump pistons. Each piston pump comprises at least one inlet valve and an outlet valve. At least the inlet valves, but optionally also the outlet valves, are embodied as springless ball check valves, in the case of which the valve ball is located in an interior, which is defined by a surface of the housing (preferably of the first housing part 11 ) at least on one side. With this design, the actual check valve is only joined and is thus produced completely only when the housing parts are brought together. Check valves, which can be sterilized well and which can be cleaned without any residue, can thus be integrated into the pump unit in a simple and reliable manner.

HIGH PRESSURE FUEL SUPPLY PUMP WITH ELECTROMAGNETIC SUCTION VALVE

To reduce collision noise created by the operation of an electromagnetic suction valve provided on a high pressure fuel supply pump. In the present invention, in order to achieve the above object, the mass of a member which collides by magnetic attractive force is reduced to reduce the noise to be generated. The thus configured present invention provides the following advantageous effects. The noise generated when a core and an anchor collide with each other by magnetic attractive force depends on the magnitude of the kinetic energy of a moving element. The kinetic energy to be consumed in the collision is only the kinetic energy of the anchor. The kinetic energy of a rod, being absorbed by a spring, does not contribute to the noise; thus, the energy when the anchor and the core collide with each other can be reduced, whereby the noise to be created can be reduced. 113-. (canceled)14. A high pressure fuel supply pump having a variable flow rate which comprises:a suction path which sucks fuel into a compression chamber; anda discharge path which discharges the fuel from the compression chamber, whereina plunger which reciprocates in the compression chamber sucks and discharges the fuel, and the high pressure fuel supply pump comprises:a suction valve in the suction path; anda discharge valve in the discharge path, whereinan amount of the fuel to be discharged is controlled by opening and closing the suction valve to change whether the suction path and the compression chamber are communicated or not communicated with each other, whereinthe suction valve keeps to be open by a moving element which is to be moved in a valve-closing direction by magnetic attractive force; a first member which is subjected to the magnetic attractive force; and', 'a second member which comes in contact with the suction valve,, 'the moving element compriseswherein even after the first member stops the movement in the valve-closing direction, the second member continues to move in the valve- ...

Hydraulic Pump

A hydraulic pump includes a work port, a high-flow piston, multiple high-pressure pistons, and an unloading valve. The work port couples to a fluid supply line of a hydraulic tool. The high-flow piston supplies fluid along a first flow path to the work port. The high-pressure pistons supply fluid along a second flow path to the work port. The unloading valve is fluidly coupled to the first flow path and the second flow path, and actuatable between an open state and a closed state. The unloading valve is configured to (i) permit fluid to flow from the high-flow piston to the work port in the open state, (ii) inhibit fluid from flowing from the high-flow piston to the work port in the closed state, and (iii) actuate from the open state to the closed state when a pressure of the fluid in the second flow path exceeds a threshold pressure. 1. A hydraulic pump , comprising:a work port configured to couple to a fluid supply line of a hydraulic tool;a high-flow piston configured to supply fluid along a first flow path to the work port;a plurality of high-pressure pistons configured to supply the fluid along a second flow path to the work port; andan unloading valve fluidly coupled to the first flow path and the second flow path, wherein the unloading valve is actuatable between an open state and a closed state, wherein the unloading valve is configured to permit the fluid to flow from the high-flow piston to the work port in the open state, wherein the unloading valve is configured to inhibit the fluid from flowing from the high-flow piston to the work port in the closed state, wherein the unloading valve is configured to actuate from the open state to the closed state when a pressure level of the fluid in the second flow path exceeds a first threshold pressure.2. The hydraulic pump of claim 1 , wherein the high-flow piston is configured to supply the fluid at a first flow rate and a first pressure level claim 1 ,wherein each high-pressure piston is configured to supply the ...

REFRIGERANT COMPRESSOR SEAL ARRANGEMENTS

A centrifugal compressor for HVAC application includes a rotary component rotatable about an axis, a static component, and a brush seal fixed to one of the static component and the rotary component. The brush seal includes bristles that contact the other of the static component and the rotary component. 1. A centrifugal compressor for HVAC application , comprising:a rotary component rotatable about an axis;a static component;a brush seal fixed to one of the static component and the rotary component and including bristles, wherein the bristles contact the other of the static component and the rotary component.2. The compressor as recited in claim 1 , wherein the brush seal is positioned to prevent leakage flow in an axial direction between the rotary component and the static component.3. The compressor as recited in claim 1 , wherein the brush seal is positioned to prevent leakage flow in a radial direction between the rotary component and the static component.4. The compressor as recited in claim 1 , wherein the compressor is a multi-stage centrifugal compressor.5. The compressor as recited in claim 1 , wherein the bristles each have at least a portion that is angled relative to the radial direction.6. The compressor as recited in claim 1 , wherein the brush seal includes a plurality of axially spaced bristle portions that contact the rotary component.7. The compressor as recited in claim 6 , wherein one of the plurality of axially spaced bristle portions extends radially inward of a second of the plurality of axially spaced bristle portions.8. The compressor as recited in claim 7 , wherein the rotary component includes a first surface axially spaced from a second surface claim 7 , the first surface is radially inward of the second surface claim 7 , the one of the plurality of axially spaced bristle portions contacts the first surface claim 7 , and the second of the plurality of axially spaced bristle portions contacts the second surface.9. The compressor as recited ...

Mecha-Hydraulic Actuated Inlet Control Valve

The subject matter of this specification can be embodied in, among other things, a fluid control device that includes a housing defining a plunger cavity in fluid communication with a fluid inlet and a fluid outlet, a valve having a shaft having a first end and a second end, and a stopper at the first end configured to block a fluid circuit between the fluid inlet and the fluid outlet in a first configuration of the inlet control valve and connect the fluid circuit in a second configuration of the inlet control valve, and a plunger configured for axial movement within the plunger cavity, defining a shaft cavity having an inner wall extending from an enclosed end to an open end in fluid communication with the fluid outlet, and configured to accommodate axial movement of the shaft within the shaft cavity. 1. A fluid control device comprising:a housing defining a plunger cavity in fluid communication with a fluid inlet and a fluid outlet; a shaft having a first end and a second end; and', 'a stopper at the first end, configured to block a fluid circuit between the fluid inlet and the fluid outlet in a first configuration of the inlet control valve and connect the fluid circuit in a second configuration of the inlet control valve; and, 'a valve comprisinga plunger configured for axial movement within the plunger cavity, defining a shaft cavity having an inner wall extending from an enclosed end to an open end in fluid communication with the fluid outlet, and configured to accommodate axial movement of the shaft within the shaft cavity.2. The fluid control device of claim 1 , wherein the shaft and the inner wall define a fluid passage from the open end to the enclosed end.3. The fluid control device of claim 2 , wherein the shaft cavity and the shaft are configured such that the fluid passage has a predetermined cross-section.4. The fluid control device of claim 1 , further comprising a biasing member configured to urge the valve toward the first configuration.5. The ...

Boom driving device

A boom driving device comprises a boom control valve causing a boom cylinder to elongate and contract. The boom control valve returns a hydraulic fluid discharged from an working chamber of the boom cylinder to a tank in a boom descending position A part of the discharged hydraulic fluid is branched in the upstream of the boom control valve and is supplied to a generator through a regenerative passage for power generation. The regenerative passage is provided with a regenerative control spool valve. The regenerative control spool valve is opened when a flow cross-sectional area of the hydraulic fluid flowing from the working chamber to the tank reaches a predetermined area while the boom control valve is in the descending position. According to this construction, it is possible to alleviate a shock that may be generated at the start of power generation by the generator.

ELECTRONICALLY CONTROLLED INLET METERED SINGLE PISTON FUEL PUMP

In a fuel pump and method of operation, an infeed for low pressure fuel leads to a pumping chamber where in an intake phase low pressure fuel is drawn into the pumping chamber and in a pumping phase high pressure fuel is delivered to a common rail. An inlet metering valve and an inlet check valve are upstream of the pumping chamber, and a control system closes the metering valve when no fuel is to be pumped to the common rail. The inlet check valve is also opened while the inlet metering valve is closed and no fuel is to be pumped to the rail. The inlet metering valve can include a proportionally controlled piston that produces a variable quantity of feed fuel and is closable for the no-demand condition with a maximum travel that contacts and holds open the inlet check valve. 1. A fuel pump comprising:an infeed passage for low pressure feed fuel;a pumping chamber in fluid communication with the infeed passage;a pumping plunger reciprocable in the pumping chamber between an intake phase that draws low pressure fuel from the infeed passage into the pumping chamber and pumping phase that increases the pressure in the pumping chamber to a higher pressure for delivery to a common rail through a discharge valve;an inlet metering valve in the infeed passage for delivering metered quantities of low pressure feed fuel through a variable opening to the pumping chamber, including a closed position of the metering valve corresponding to zero flow through the variable opening to the pumping chamber;an inlet check valve between the metering valve and the pumping chamber, biased against a seat to permit feed flow to the pumping chamber during the intake phase and to prevent fuel pumped at high pressure from flowing into the infeed passage during the pumping phase;an actuator for varying the opening of the inlet metering valve commensurate with infeed fuel quantity demand for the intake phase in the pumping chamber; andmeans for opening the inlet check valve while the inlet ...

PULSATION-FREE WET SPRAYING MACHINE

A pulsation-free wet spraying machine resolves the issue of pulsing during pumping of a concrete spraying machine. The wet spraying machine includes a frame, a pumping mechanism, a swing mechanism and a hydraulic system, wherein the pumping mechanism includes a hopper, a material chamber, a concrete feeding mechanism, an auxiliary feeding mechanism and a distribution valve, the hopper is disposed above the material chamber, the concrete feeding mechanism and the auxiliary feeding mechanism each include a hydraulic cylinder, a concrete piston and a concrete cylinder, the concrete cylinder of the concrete feeding mechanism and an auxiliary concrete cylinder of the auxiliary feeding mechanism are both connected with the material chamber, a discharge port is disposed on the material chamber, sealing between the distribution valve and the discharge port is provided by a sealing ring, the distribution valve is disposed inside the material chamber, a front friction plate and a rear friction plate are further disposed inside the material chamber, the swing mechanism includes a swing hydraulic cylinder, a mandrel, a swing arm and a swing hydraulic cylinder base, and the mandrel drives the distribution valve to swing. In addition, The pulsation-free wet spraying machine stably feeds a material, has a compact structure, and is wear-resistant. 1. A pulsation-free wet spraying machine , comprising a frame , a pumping mechanism , a swing mechanism and a hydraulic system ,wherein the pumping mechanism comprises a hopper, a material chamber, a concrete feeding mechanism, an auxiliary feeding mechanism, a distribution valve and a discharge port, the hopper is disposed above the material chamber, two concrete cylinders of the concrete feeding mechanism are in communication with the material chamber, and an auxiliary concrete cylinder of the auxiliary feeding mechanism is in communication with the distribution valve in the material chamber; the distribution valve is disposed inside ...

VOLUMETRIC PUMP

An apparatus for pumping a fluid from a fluid inlet to a fluid outlet is disclosed. The apparatus comprises: a spool axially movable within a cavity, wherein a first chamber is located at a first axial end of the cavity and a second chamber is located at a second axial end of the cavity, wherein the volume of the first chamber and the second chamber varies depending upon the axial position of the spool within the cavity; a valve movable between a first position and a second position, wherein in the first position the valve is configured to convey fluid from the fluid inlet to the first chamber and from the second chamber to the fluid outlet, and in the second position the valve is configured to convey fluid from the fluid inlet to the second chamber and from the first chamber to the fluid outlet. 1. An apparatus for conveying a fluid from a fluid inlet to a fluid outlet , the apparatus comprising:a spool axially movable within a cavity, wherein a first chamber is located at a first axial end of the cavity and a second chamber is located at a second axial end of the cavity, wherein the volume of the first chamber and the second chamber varies depending upon the axial position of the spool within the cavity;a valve movable between a first position and a second position, wherein in the first position the valve is configured to convey fluid from the fluid inlet to the first chamber and from the second chamber to the fluid outlet, and in the second position the valve is configured to convey fluid from the fluid inlet to the second chamber and from the first chamber to the fluid outlet; anda control system configured to control the movement of the spool and the valve.2. An apparatus as claimed in claim 1 , wherein the control system is configured to synchronise the movement of the spool with the valve claim 1 , such that:(i) when the valve is in its first position the control system is configured to move the spool in a first axial direction to increase the volume of the ...

RECIPROCATING SUBSURFACE PUMP

A reciprocating pump includes an open-bottomed barrel adapted for attaching to the lower end of a production tubing string; a seating assembly having a cylindrical bore and adapted for mounting to a seating nipple at the upper end of the barrel; and a plunger assembly adapted for attaching to the lower end of a sucker rod string. The plunger assembly includes concentric upper and lower plunger sections interconnected by a double-valve, ported valve cage. The plungers are sized for sealing reciprocating engagement within, respectively, the bore of the seating assembly and the bore of the pump barrel. The lower plunger and the ported valve cage define a production chamber within the pump barrel. The upper plunger has ports allowing fluid flow from the tubing into the production chamber. Optionally, the upper plunger and the barrel may be provided with flush ports facilitating flushing of the pump to eliminate vapor lock. 1. A pump assembly comprising:(a) a pump barrel having a cylindrical wall, an upper end adapted for mounting to a lower end of a tubing string, and an open lower end;(b) a pump-seating nipple adapted for mounting to the lower end of the tubing string;(c) a seating assembly having a cylindrical bore, said seating assembly being in seating engagement with the pump-seating nipple; d.1 an upper plunger having a cylindrical wall, an upper end, and a lower end, said upper plunger defining an upper plunger chamber and having a fluid port proximal to the upper end of the upper plunger for allowing fluid entry into the upper plunger chamber, and said upper plunger being reciprocatingly and sealingly movable within the bore of the seating assembly;', 'd.2 a lower plunger having a cylindrical wall, an upper end, and a lower end, with the outer diameter of the cylindrical wall of the lower plunger being larger than the outer diameter of the cylindrical wall of the upper plunger, said lower plunger being reciprocatingly and sealingly movable within the pump barrel ...

HIGH-PRESSURE FUEL SUPPLY PUMP HAVING AN ELECTROMAGNETICALLY-DRIVEN INLET VALVE

A high-pressure fuel supply pump having a normally-closed type electromagnetically-driven inlet valve mechanism supporting a large capacity and causing least sound is provided. A valve member having a seat surface that comes into abutment with an inlet valve seat; and a plunger rod positioned on the seat surface side of the valve member and configured to operate the valve member by a magnetic attraction force are provided, and a protector configured to face a surface of the valve member on the surface opposite to the seat surface with a gap therebetween when the plunger rod makes a full stroke in the valve-open direction of the valve member and an anchor for driving the plunger rod comes into contact with a stopper is provided. 1. A high-pressure fuel supply pump provided with an electromagnetically-driven inlet valve mounted at an inlet opening of a pressurizing chamber formed in a pump housing and configured to adjust fuel spilled from the pressurizing chamber comprising:a valve member having a seat surface that comes into abutment with a valve seat;a plunger rod positioned on the seat surface side of the valve member and configured to operate the valve member by an electromagnetic force; anda protector configured to face a surface of the valve member on the side opposite to the seat surface with a gap therebetween when an anchor for driving the plunger rod comes into contact with a stopper and the plunger rod makes a full stroke in an opening direction, whereinthe protector is provided between the surface of the valve member on the side opposite to the seat surface and an inlet opening of the pressurizing chamber.2. The high-pressure fuel supply pump according to claim 1 , whereinthe gap between the valve member and the protector is always larger than the gap between the anchor and the stopper.3. The high-pressure fuel supply pump according to claim 1 , comprising:a valve-closing spring configured to bias the plunger rod in the valve-close direction of the valve ...

RECIPROCATING PUMP

A pump suitable for use in a wearable medical device, such as a patch pump, comprises an axially translatable chamber with an inlet and an outlet, a piston or a diaphragm rotatably received in the chamber, a first valve between the inlet and the chamber, a second valve between the outlet and the chamber, a cam affixed to the chamber, a follower affixed to the piston and in contact with the cam for axially translating the chamber, and a biasing means acting on the chamber for applying a force on the chamber in an axial direction of the chamber to maintain such contact. 1. A pump system for the pumping of a liquid , the pump system comprising:an axially translatable chamber having a cam surface, an inlet and an outlet;a piston received in the chamber, said piston fixed in an axial position relative to the pump system, said piston having a follower in contact with the cam surface for axially translating the chamber by rotation of said piston relative to said chamber; andwhere said chamber is biased in an axial direction to maintain contact between said follower and said cam surface of said chamber.2. The pump system according to claim 1 , wherein said inlet comprises an inlet valve and said outlet comprises an outlet valve.3. The pump system according to claim 2 , wherein the inlet valve and the outlet valve comprise check valves.4. The pump system according to claim 2 , wherein the inlet valve and the outlet valve comprise externally controlled valves that are operated by a mechanical linkage or by an electrical control system.5. The pump system according to claim 2 , wherein the inlet valve and the outlet valve comprise pinch valves.6. The pump system according to claim 2 , wherein said inlet valve comprises a flexible inlet conduit where a pinch valve closes said flexible inlet conduit when said chamber is in a first position claim 2 , and said outlet valve comprises a flexible outlet conduit where a pinch valve closes said flexible outlet conduit when said chamber ...

Linear compressor

A linear compressor is provided that may include a shell in which a discharge port is provided, a cylinder disposed in the shell to define a compression space for a refrigerant, a piston disposed to be reciprocated in an axial direction within the cylinder, a discharge valve disposed on or at one side of the cylinder to selectively discharge the refrigerant compressed in the compression space, the discharge valve including an insertion protrusion, and a valve spring coupled to the discharge valve to provide a restoring force to the discharge valve. The valve spring may include a spring body having a central portion defined at a portion corresponding to a center of the cylinder, and an insertion hole defined in the spring body. The insertion hole may be coupled to the insertion protrusion of the discharge valve. The central portion of the spring body may be spaced apart from a central portion of the insertion hole.

Electromagnetic actuator for a valve mechanism

An electromagnetic actuator for a valve mechanism, in particular in a common rail system of a motor vehicle, comprising an armature tappet for actuating a valve element located in a channel, and comprising a pole core, the armature tappet being movable axially along a central axis of the actuator when an excitation coil of an excitation system is energized. The pole core therefore has a tubular shape and has a circumferential flange in the area of the pole core end facing the channel, said flange extending inward in relation to the central axis. 1. An electromagnetic actuator for a valve mechanism , in a common rail system of a motor vehicle , comprising:an armature tappet for actuating a valve element located in a channel, the armature tappet being movable axially along a central axis of the actuator when an excitation coil of an excitation system is energized;a pole core having a tubular shape and a circumferential flange in an area of the pole core end facing the channel;wherein the flange extends inwards in relation to the central axis.2. The electromagnetic actuator according to claim 1 , wherein the armature tappet is guided in a guide sleeve and the guide sleeve is held clamped between an inner circumferential flange of the pole core and a housing part of the actuator.3. The electromagnetic actuator according to claim 2 , wherein the housing part is a U-shaped spring cover claim 2 , in which a spring mechanism is disposed claim 2 , wherein the spring mechanism is supported in a spring cover and rests against a spring plate fastened to the armature tappet.4. The electromagnetic actuator according to claim 3 , wherein the spring cover is formed of a non-magnetic material.5. The electromagnetic actuator according to claim 2 , wherein the pole core and the guide sleeve are compressed together.6. The electromagnetic actuator according to claim 1 , wherein a tubular shaped armature is provided in which the armature tappet is held compressed with a front part facing ...

MULTIPLE DIAPHRAGM PUMP

A diaphragm pump assembly can include a pump drive chamber, a first pump diaphragm chamber, and a second pump diaphragm chamber. The assembly can include a pump motor configured to rotate a motor shaft extending into the pump drive chamber. The assembly can include a cam connected to the motor shaft and configured to rotate in response to rotation of the motor shaft. The assembly can include a drive yoke having a yoke frame and a yoke pocket having a first wall and a second wall parallel and opposite the first wall. First and second pistons can connect to the drive yoke and to first and second diaphragms, respectively. The diameter of the cam can be less than and within 5% the width of yoke pocket and the yoke can be configured to move the pistons along a straight line. 1. A diaphragm pump assembly comprising: a manifold inlet;', 'a manifold outlet;', 'a pump drive chamber;', 'a first pump diaphragm chamber positioned in a first fluid path between the manifold inlet and the manifold outlet; and', 'a second pump diaphragm chamber positioned in a second fluid path between the manifold inlet and the manifold outlet, 'a valve manifold havinga pump motor having a motor shaft, the pump motor configured to rotate the motor shaft, the motor shaft extending into the pump drive chamber;a cam having a cam diameter and connected to the motor shaft, the cam configured to rotate in response to rotation of the motor shaft; a yoke frame; and', 'a yoke pocket surrounded by the yoke frame, the yoke pocket having a height, a width, a first wall extending along at least a portion of the height of the yoke pocket, and a second wall parallel and opposite to the first wall;, 'a drive yoke havinga first piston connected to the drive yoke and extending into the first pump diaphragm chamber;a second piston connected to the drive yoke and extending into the second pump diaphragm chamber;a first diaphragm connected to the first piston and positioned within the first pump diaphragm chamber;a ...

TAPPET BODY AND FUEL INJECTION PUMP COMPRISING SAME

A tappet body for a fuel injection pump and a fuel injection pump, wherein the tappet body comprises: a first cavity, which is disposed at the bottom of the tappet body; a roller, which is held in the first cavity by a pin shaft in such a way that the roller is scrollable and axially movable; and a second cavity, which is disposed at the top of the tappet body and has an inner end face perpendicular to a longitudinal central axis of the tappet body; wherein at least one recess symmetrical about the longitudinal central axis of the tappet body is provided in the inner end face. 115. A tappet body for a fuel injection pump , the tappet body () comprising:{'b': 29', '15, 'a first cavity (), which is disposed at a bottom of the tappet body ();'}{'b': 33', '29', '31, 'a roller (), which is held in the first cavity () by a pin shaft () in such a way that the roller is scrollable and axially movable; and'}{'b': 30', '15', '30', '47', '15, 'a second cavity (), which is disposed at a top of the tappet body (), the second cavity () having an inner end face () perpendicular to a longitudinal central axis of the tappet body ();'}{'b': 47', '38', '15, 'wherein the inner end face () has therein at least one recess () symmetrical about the longitudinal central axis of the tappet body ().'}2384747. The tappet body according to claim 1 , wherein the at least one recess () is an annular recess and is configured such that at least part of the annular recess is at a position of the inner end face () that is proximate to an outer perimeter of the inner end face ().347. The tappet body according to claim 2 , wherein a distance between the at least part of the annular recess and the longitudinal central axis of the tappet body is greater than one third of a radius of the inner end face ().4384747. The tappet body according to claim 1 , wherein the at least one recess () includes a plurality of radial recesses or dispersedly-arranged recesses and is configured such that at least part of ...

SYSTEM AND METHOD FOR REINFORCING RECIPROCATING PUMP

A drive system for a fluid end of a reciprocating pump assembly including a drive member and a power end housing having a crankshaft rotatably disposed therein. The assembly includes a gearbox secured to the power end housing, the gearbox operatively connecting the drive member to the crankshaft for rotation thereof. The assembly further includes at least one arm member extending between the gearbox and the power end housing, the at least one arm member positioned to resist relative movement between the gearbox and the power end housing. 1. A drive system for a fluid end of a reciprocating pump assembly , the drive system comprising:a drive member;a power end housing having a crankshaft rotatably disposed therein;a gearbox secured to the power end housing, the gearbox operatively connecting the drive member to the crankshaft for rotation thereof; andat least one arm member extending between the gearbox and the power end housing, the at least one arm member positioned to resist relative movement between the gearbox and the power end housing.2. The drive system of claim 1 , wherein the at least one arm member includes at least two arm members extending between the gearbox and the power end housing to resist relative movement between the gearbox and the power end housing.3. The drive system of claim 2 , wherein the at least two arm members are parallel with respect to each other.4. The drive system of claim 1 , wherein the at least one arm member includes at least two arm members extending between the gearbox and the power end housing on a same plane.5. The drive system of claim 1 , wherein the at least one arm member includes an adjustable length.6. The drive system of claim 1 , wherein the at least one arm member is pivotably secured to the power end housing.7. The drive system of claim 1 , wherein the at least one arm member is pivotably secured to the gearbox.8. The drive system of claim 1 , wherein the power end housing is formed having a front wall claim 1 , a ...

Support for reciprocating pump

A skid for supporting a reciprocating pump assembly, the reciprocating pump assembly including a power end frame assembly having a pair of end plates and a plurality of middle plates disposed between the end plates. The end plates each have at least a pair of feet and the middle plates each having at least one foot. The skid includes a base and a plurality of pads extending from the base. At least a portion of the plurality of pads correspond to the end plate feet and at least another portion of the plurality of pads correspond to the at least one foot of each middle plate.

Fluid working machine and method of operating a fluid working machine

A fluid working machine of the type comprising working chambers of cyclically varying volume and low and high pressure valves to regulate the flow of working fluid into and out of the working chamber, from low and high pressure manifolds, in which the valves are electronically controlled on each cycle of working chamber volume, by way of valve actuation signals, to determine the net displacement of working chambers. Additional valve actuator signals are generated in response to determination that a valve or working chamber has been inactive to adapt the valve to operate more reliably when subsequently actuated, but without significantly altering the net displacement of working chambers. 1. A method of operating a fluid working machine , the machine comprising a rotatable shaft and a plurality of working chambers having working volumes which vary cyclically with rotation of the rotatable shaft ,each working chamber having a low pressure valve which regulates the flow of working fluid between the working chamber and a low pressure manifold and a high pressure valve which regulates the flow of working fluid between the working chamber and a high pressure manifold, each low pressure valve being an electronically controlled valve having a valve actuator,the method comprising transmitting primary actuation signals to the actuators, in phased relationship to cycles of working chamber volume, to thereby actively control the said electronically controlled valves and so determine the net displacement of each working chamber on each cycle of working chamber volume, and selecting the net displacement of a group of one or more of the working chambers to follow a target,and further determining whether a valve inactivity test is met in respect of a said low pressure valve of a said working chamber and, responsive to said determination, transmitting one or more additional actuator signals to the actuator of the said low pressure valve, which additional actuator signals do not ...

Device to Determine Volume of Fluid Dispensed

An apparatus for determining the volume of fluid dispensed. The apparatus has an acoustic volume sensor that acoustically excites a reference volume and a measurement chamber with a loudspeaker and measures the acoustic response with microphones acoustically coupled to the reference and the measurement chamber. The loudspeaker and sensing microphones are connected to the measurement chamber by separate ports. A detachable dispensing chamber is coupled to the acoustic volume sensor. The volume of the fluid dispensed is determined by a processor based on the acoustic response of the microphones to acoustic excitement by the loudspeaker.

RECIPROCATING PUMP

A pump suitable for use in a wearable medical device, such as a patch pump, comprises an axially translatable chamber with an inlet and an outlet, a piston or a diaphragm rotatably received in the chamber, a first valve between the inlet and the chamber, a second valve between the outlet and the chamber, a cam affixed to the chamber, a follower affixed to the piston and in contact with the cam for axially translating the chamber, and a biasing means acting on the chamber for applying a force on the chamber in an axial direction of the chamber to maintain such contact. 1. A pump system for the pumping of a liquid , the pump system comprising:an axially translatable chamber with an inlet and an outlet;a piston rotatably received in the chamber;a first valve between the inlet and the chamber;a second valve between the outlet and the chamber;a cam affixed to the chamber;a follower affixed to the piston and in contact with the cam for axially translating the chamber; anda biasing means acting on the chamber for applying a force on the chamber in an axial direction of the chamber to maintain such contact.2. The pump system according to claim 1 , wherein the first and second valves comprise check valves.3. The pump system according to claim 1 , wherein the first and second valves comprise externally controlled valves that are operated by a mechanical linkage.4. The pump system according to claim 1 , wherein the first and second valves comprise externally controlled valves that are operated by an electrical control system.5. The pump system according to claim 1 , wherein the first and second valves comprise pinch valves.6. The pump system according to claim 1 , wherein the biasing means comprises a spring.7. The pump system according to claim 1 , wherein the cam is on an edge of the chamber.8. A pump system for the pumping of a liquid claim 1 , the pump system comprising:an axially translatable chamber with an inlet and an outlet;a diaphragm rotatably received in the ...

HYDRAULIC SYSTEM AND METHOD FOR CONTROLLING THE SPEED AND PRESSURE OF A HYDRAULIC CYLINDER

A method for controlling a speed of a hydraulic cylinder () in a hydraulic system () is provided. The hydraulic system () may include a hydraulic cylinder () fluidly connected to a load-holding valve arrangement () including a first load-holding valve () connected to a first end () of the hydraulic cylinder () and a second load-holding valve () connected to a second end () of the hydraulic cylinder (). The hydraulic system () may further include a flow-control valve arrangement () comprising a directional flow-control valve () and at least one hydraulic pump (). 121234526728910. A method for controlling a speed and a pressure of a hydraulic cylinder () in a hydraulic system () comprising the hydraulic cylinder () fluidly connected to a load-holding valve arrangement () comprising a first load-holding valve () connected to a first end () of the hydraulic cylinder () and a second load-holding valve () connected to a second end () of the hydraulic cylinder () , a flow-control valve arrangement () comprising a directional flow-control valve () , and at least one hydraulic pump () , the method comprising:{'b': '2', 'inputting an extension speed or a retraction speed for the hydraulic cylinder () by an operator controller;'}{'b': '1', 'measuring a working pressure within the hydraulic system (); and'}{'b': 2', '3, 'measuring a speed of the hydraulic cylinder () or measuring a differential pressure over the load-holding valve arrangement (),'}{'b': 2', '3', '1', '2', '9', '4', '6, 'wherein responsive to detection of the measured working pressure and one of the speed of the hydraulic cylinder () or the differential pressure over the load-holding valve arrangement (), setting the hydraulic system () to operate in a first mode, a second mode, or a third mode, wherein the extension speed or the retraction speed of the hydraulic cylinder () is controlled by adjusting a position of the directional flow-control valve (), the first load-holding valve (), and the second load- ...

LINEAR COMPRESSOR

The present invention relates to a linear compressor. The linear compressor according to an aspect of the present invention includes a spring axially elastically supporting a driving assembly. The spring includes a spring body axially extending, a front spring link forming an end of the spring body by extending from a side of the spring body, and a rear spring link forming the other end of the spring body by extending from the other side of the spring body. Any one of the front spring link and the rear spring link is fixed to the driving assembly and the other one is fixed to a supporting assembly. 1. A linear compressor comprising:a shell that defines an external shape of the linear compressor;a driving assembly located in the shell and configured to reciprocate relative to the shell in an axial direction of the driving assembly;a supporting assembly configured to support the driving assembly in the shell;a suction pipe located at the shell and configured to supply refrigerant into the shell in the axial direction; anda spring coupled to the driving assembly and to the supporting assembly, the spring being configured to elastically support the driving assembly in the axial direction, a spring body that is configured to extend in the axial direction,', 'a front spring link that extends from a first side of the spring body and that defines a first end of the spring body, and', 'a rear spring link that extends from a second side of the spring body and that defines a second end of the spring body, and, 'wherein the spring includeswherein one of the front spring link or the rear spring link is configured to fix to the driving assembly, and the other of the front spring link or the rear spring link is configured to fix to the supporting assembly.2. The linear compressor of claim 1 , wherein the driving assembly includes a piston configured to reciprocate along a spring central axis that extends in the axial direction claim 1 , andwherein the spring body extends in a ...

Oil Field Pumps with Reduced Maintenance

A valve module comprising: a cylindrical canister containing a valve assembly for a high pressure pump, wherein the valve assembly comprises a valve body and a valve seat, wherein the valve module provides a fluid flow path from an inlet to an outlet of the valve module from one side of the valve seat along a central axis of the valve module to the other side of the valve seat along the central axis and between the valve body and the valve seat when the valve assembly is in an open configuration, and does not provide the fluid flow path when the valve assembly is in a closed configuration. 1. A valve module comprising:a cylindrical canister containing entirely therein a valve assembly for a pump fluid end of a high pressure pump, such that the entire valve assembly can be inserted into and removed from the pump fluid end, respectively, via insertion of the valve module into and removal of the valve module from the pump fluid end, wherein the valve assembly comprises a valve body and a valve seat, wherein the valve module provides a fluid flow path from an inlet to an outlet of the valve module from one side of the valve seat along a central axis of the valve module to the other side of the valve seat along the central axis and between the valve body and the valve seat when the valve assembly is in an open configuration, and does not provide the fluid flow path when the valve assembly is in a closed configuration.2. The valve module of claim 1 , wherein the cylindrical canister further comprises one or more tool engagement features whereby the valve module can be pushed and/or pulled by engagement of a tool with the tool engagement features.3. The valve module of claim 1 , wherein the valve assembly is a discharge valve assembly.4. The valve module of claim 3 , wherein the valve module is designed such that claim 3 , when inserted into a fluid end body of a pump fluid end comprising a discharge port claim 3 , the outlet of the valve module aligns with the discharge ...