691results about "Rotary/oscillating piston combinations" patented technology

A linear actuator system includes a linear actuator and an integrated pump assembly connected to the linear actuator to provide fluid to operate the linear actuator. The integrated pump assembly includes a pump with two fluid drivers, each fluid driver comprising a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from a first port of the pump to a second port of the pump. The pump assembly also includes two valve assembles to isolate the pump from the system. The linear actuator system also includes a controller that establishes the pump in a normal mode of operation in which the prime movers are independently driven and switches to a fail-safe mode of operation in which only one prime mover is operated.

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet, and at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow 5 through the flow chamber from the inlet to the outlet, wherein each screw (4, 5, 6) comprises a release coupling (45, 52, 62) to restrict, when in use, the rotation of the screw when it is being extracted from a molding tool.

Screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow through the flow chamber from the inlet to the outlet; and a flexible coupling (11) connected to one of the screws to couple the screw to a drive motor (10).

An electronic oil pump comprises a first rotor assembly, a stator assembly, an electronic control board assembly, an isolating member and a heat conductor, wherein the first rotor assembly is located in the first cavity of the electronic oil pump; the heat conductor comprises a first part and a second part, the first part is located in the second cavity of the electronic oil pump, and the second part is located in the third cavity of the electronic oil pump; the electronic control board assembly comprises a substrate and a temperature sensing unit, the substrate comprises a first hole, an upper plate layer, a lower plate layer and at least one metal layer, and part of the second part is located in the first hole; the temperature sensing unit is located on one side of the second part, and there is a preset distance between the temperature sensing unit and the second part; the metal layer closest to the temperature sensing unit is defined as the nearest metal layer, and the temperature sensing unit is projected in a direction parallel to the upper surface of the nearest metal layer, and at least part of the projection of the temperature sensing unit is located in the nearest metal layer, and the temperature sensing unit can detect the temperature of the nearest metal layer or the temperature sensing unit can detect the temperature of the upper plate layer or the lower plate layer in contact with the nearest metal layer; this is conducive to simplifying the system structure.

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; and at least two screws (4, 5, 6) housed in the flow chamber to 5 force a fluid flow through the flow chamber from the inlet to the outlet; wherein the casing (3) comprises a shell (33) within which an insert (34) defining the flow chamber is housed.

The utility model relates to the field of hydraulic pressure, and discloses an electro-hydraulic power device and operation equipment. The motor pump is arranged in the shell assembly and comprises a motor, a motor driver and a hydraulic pump driven by the motor; the heat dissipation assembly is provided with a heat dissipation oil cavity, first heat dissipation fins, second heat dissipation fins and a reinforced heat dissipation module, the heat dissipation oil cavity is formed in the shell assembly and can dissipate heat for the motor and the hydraulic pump, the first heat dissipation fins are connected to the shell assembly and can dissipate heat for the heat dissipation oil cavity, and the second heat dissipation fins are connected to the shell assembly and can dissipate heat for the motor driver; the reinforced heat dissipation module is connected to the shell assembly and at least can dissipate heat for the heat dissipation oil cavity. The electro-hydraulic power device is excellent in heat dissipation performance, high in working performance and long in service life, can be used as an independent power device with efficient heat dissipation performance, and is higher in practicability compared with an existing integrated electric drive hydraulic power source.

The utility model provides a composite spherical pump which comprises a stator, a first spherical inner cavity and a second spherical inner cavity which are arranged up and down are arranged in the stator, and a first spherical rotor and a second spherical rotor are arranged in the first spherical inner cavity and the second spherical inner cavity respectively. The stator is provided with a first liquid suction hole and a first liquid discharge hole which are communicated with the first spherical inner cavity, and is also provided with a second liquid suction hole and a second liquid discharge hole which are communicated with the second spherical inner cavity; a driving shaft of the first spherical rotor is connected with a second spherical rotor; a driving shaft of the second spherical rotor extends out of the lower part of the stator and is connected with a driving part; the composite spherical pump provided by the utility model is used for simultaneously sucking two media which are easy to react, the mixing proportion of the two media can be accurately controlled, the two media can be prevented from reacting due to internal leakage in different cavities, and meanwhile, the composite spherical pump is small and exquisite in structure and can save the installation space; on the other hand, the torque fluctuation of the driving motor is small and the torque peak is reduced.

An electronic oil pump includes a first rotor assembly, a stator assembly, an electric control board assembly, an isolation member and thermal conductive members; the first rotor assembly is located in a first chamber of the electronic oil pump, the thermal conductive members each comprise a first portion and a second portion, the first portions being located in a second chamber of the electronic oil pump, the second portions being located in a third chamber of the electronic oil pump; the electric control board assembly includes a base plate and a temperature-sensing unit, the base plate including first holes, an upper plate layer, a lower plate layer and at least one metal layer, a part of the second portions being located in the first holes; the temperature-sensing unit is located at one side of the second portion, there is a preset distance between the temperature-sensing unit and the second portion.

The invention provides an electronic oil pump, which belongs to the technical field of oil pumps, and comprises: a pump cover, which is provided with an oil inlet and a first oil inlet channel; the motor shell is provided with a motor cavity and an oil return channel; the motor assembly comprises a motor shaft, the motor shaft is rotatably connected with the motor shell, the motor shaft is provided with a second oil inlet channel in the axial direction of the motor shaft, and the oil inlet communicates with the motor cavity through the first oil inlet channel and the second oil inlet channel; and the rotor assembly is located between the pump cover and the motor shell, an oil passing channel is formed in the rotor assembly, and the motor cavity communicates with the oil inlet through the oil return channel and the oil passing channel. The electronic oil pump has the beneficial effects that low-temperature oil enters through the oil inlet, high-temperature oil returns through the oil return channel, double-face oil suction is achieved, the volume efficiency of the electronic oil pump at the high rotating speed is improved, the circulating flow is large, and the cooling effect on the motor assembly and the controller is good.

The invention discloses an active suspension electro-hydraulic pump assembly, a chassis axle and a chassis system for a vehicle, an integrated motor shell and a controller cover plate are arranged, the integrated shell is provided with motor cavities located at the two ends in the axial direction, and the two motor cavities are respectively provided with two motors and corresponding hydraulic pumps; the controller cover plate covers the circuit board mounting surface of the integrated motor shell to form the controller cavity for mounting the circuit board, and only the sealant is arranged between the controller cover plate and the circuit board mounting surface for connection, so that the assembly process of the electro-hydraulic pump assembly is reconstructed and simplified; the design that the double motors are fixedly connected through bolts and the technology that the double motors are sealed through sealants are avoided, the overall road surface vibration resisting function of the product is improved, and the sealing reliability of the controller cavity of the product is improved.

The utility model discloses a multi-stage internal spiral pump driven by a hole type servo motor, which belongs to the technical field of spiral pumps, a stator is matched with a rotor to realize that the rotor drives a rotating sleeve to rotate in a mounting cavity, and when the rotating sleeve and the rotor synchronously rotate, a spiral cavity is formed between a spiral blade in a liquid conveying hole of an internal spiral sleeve and a core shaft; liquid flows from the liquid inlet hole to the circulation hole through the spiral cavity, and then flows to the liquid outlet hole from the circulation hole; the stator and the rotor of the motor, the rotating sleeve related to the screw pump, the inner spiral sleeve and the mandrel are integrated together to form the inner spiral pump of a special structure, the structure of the spiral pump is more compact, the size of the spiral pump is small, the spiral blades are arranged on the inner side wall of the liquid conveying hole of the inner spiral sleeve, and the rotor drives the rotating sleeve and the inner spiral sleeve to rotate. Compared with a conventional pump shaft, the inner spiral sleeve can bear larger twisting force, high-speed liquid conveying of the inner spiral pump is facilitated, and a high-speed high-pressure power source composed of a stator and a rotor can be adapted.

The invention relates to the field of motor pumps, in particular to a duplex-winding low-voltage motor pump. The double-low-pressure integrated controller and the hydraulic steering pump are connected to the two ends of the driving motor respectively. The driving motor comprises a double-winding stator assembly and a rotor assembly rotationally arranged on the inner side of the double-winding stator assembly, the input end of the hydraulic steering pump is connected with the rotor assembly, the hydraulic steering pump is provided with an oil inlet and an oil outlet, the double-low-pressure integrated controller comprises two sub-controllers, the double-winding stator assembly comprises two sets of stator coil windings, and the double-winding stator assembly comprises two sets of stator coil windings. And the two sub-controllers are respectively in control connection with the two sets of stator coil windings. The hydraulic steering pump is provided with the two sets of stator coil windings capable of running simultaneously or independently, when one set of stator coil winding breaks down, the other set of stator coil winding can be kept in the running state, the hydraulic steering pump is effectively driven by driving the rotor assembly to provide hydraulic steering assistance for a vehicle, and driving safety is guaranteed.

An electric pump system and method of operating the same involves pumping a fluid through a fluid passageway defined in a mechanical pump from a pump inlet to a hollow shaft of a motor, through the hollow shaft to an internal motor cavity defined by a housing of the motor, and through another fluid passageway defined in the motor housing and mechanical pump that leads to a pump outlet. The system and method further involve pumping the fluid through another fluid passageway defined in the mechanical pump from yet another pump inlet to the pump outlet. The temperature of fluid exiting the hollow shaft can be assessed and used by an electronic control unit (ECU) of the electric pump system to control the same. The electric pump system can be part of a cooling and lubrication system for an electric vehicle transmission, gearbox, differential or transfer case, for example.

The utility model discloses a pump assembly of a vehicle, an engine, a hybrid power assembly and the vehicle, the pump assembly comprises an oil scavenger pump, the oil scavenger pump comprises a first oil cavity, the first oil cavity is correspondingly provided with a first oil inlet and a second oil inlet, and the first oil inlet and the second oil inlet are distributed on different side walls of the oil scavenger pump. Therefore, the first oil inlet and the second oil inlet are formed in the opposite side walls of the oil scavenger pump respectively, a certain distance can be kept between the first oil inlet and the second oil inlet, blow-by is prevented, the machining difficulty and the machining cost are reduced, the installation difficulty of the pump assembly can be reduced, and the practicability of the pump assembly is improved.

An operable implant adapted for implantation into a patient's body. The operable implant comprises an operating device and a body-engaging portion, the operating device comprising an electric motor including a stationary part containing a plurality of coils and a movable part containing a plurality of magnets, such that sequential energization of the coils magnetically propels the magnets and, thereby, the movable part. The operating device further comprises an encapsulation adapted to hermetically encapsulate the coils of the stationary part, thereby forming a seal between the stationary part and the movable part, which is propelled by the contained magnets, such that the coils of the stationary part are sealed from bodily fluids when implanted.

A spherical pump and motor assembly, including a spherical pump with a rotary disc shaft and an outer rotor motor. The outer rotor motor includes an outer rotor and a stator. The outer rotor has a rotor main body, which is cylindrical and upward-opening. A magnetic ring is arranged on an inner periphery of the rotor main body. A rotor central shaft is provided at a bottom center of the rotor main body. The stator includes a bracket with a central shaft hole. Multiple coil windings are arranged on an outer periphery of the bracket. An upper end of the bracket is configured to protrude out of upper ends of the coil windings to form a connection portion fixedly connected to a cylinder body seat. A lower end of the rotary disc shaft is engaged with an upper end of the rotor central shaft for torque transmission.

This invention discloses a scraper-type permanent magnet synchronous electromagnetic pump. The pump body has a pump chamber with an opening at one end. An end cover is sealed and fixed to the opening end of the pump chamber. A cam rotor is installed in the pump chamber. The rotating shafts at the front and rear ends of the cam rotor are rotatably connected to the end cover and the pump body, respectively. One end of the upper scraper and the lower scraper are fixed to the inner wall of the pump chamber by upper and lower torsion springs, respectively, dividing the pump chamber into a low-pressure chamber on the left and a high-pressure chamber on the right. The upper and lower torsion springs apply a spring force pointing towards the axis of the cam rotor to the upper and lower scrapers, respectively. The volume of the low-pressure chamber is larger than that of the high-pressure chamber. A winding is embedded in the inner wall at the bottom of the pump chamber or the inner surface of the end cover. Correspondingly, a pair of permanent magnets is embedded in the end face of the cam rotor near the winding. When the cam rotor rotates, the upper and lower scrapers swing, and their free ends always press against the outer circumferential surface of the cam rotor, scraping the fluid on the surface of the cam rotor. The cam-blade rotor, in cooperation with the upper and lower scrapers, improves the overall stability.

The utility model discloses an electronic oil pump which comprises a pump shell and further comprises a fixed shaft arranged in the pump shell. The inner gear and the fixed shaft deviate from the axis and are rotationally connected; the outer gear is coaxially connected with the fixed shaft and rotationally connected into the pump shell, and the outer gear is located on the periphery of the inner gear and meshed with the inner gear; the motor rotor is fixedly connected to the periphery of the outer gear; the motor stator is located on the periphery of the rotor and fixedly connected with the pump shell; on the plane penetrating through the axis of the fixed shaft, the projection areas of the motor stator, the motor rotor, the outer gear, the inner gear and the fixed shaft at least partially coincide. Due to the fact that the small-size bearing is adopted, the electronic oil pump has the advantages of being small in height, compact in structure, low in resistance, high in stability and the like.

The invention discloses a gear pump control method, device and equipment and a storage medium, and the method comprises the steps: obtaining the reverse electromotive force in the operation process of a motor in the operation process of a gear pump, calculating the actual value of the voltage for driving the motor to operate based on the reverse electromotive force, and calculating the deviation between the actual value and the input value of the voltage for driving the motor to operate; the deviation is used as an operation factor, the input value is used as a target, proportional differential integral control is carried out, the deviation between the input value and an actual value is continuously measured, the input value is continuously fed back and adjusted according to the deviation, a stable actual value is obtained, and the actual value of the voltage reflects the rotating speed and the output flow of the gear pump. Under the condition that a sensor is not needed, high-precision and stable control over the output flow of the gear pump is achieved, and cost is reduced.

The utility model relates to an electronic oil pump applying a hydrostatic bearing, which comprises an oil pump shell, a rotor shell and a pump cover are sequentially mounted on one side of the oil pump shell, a controller shell, a controller cover and the oil pump shell are sequentially mounted on the other side of the oil pump shell, a rotor assembly is rotatably mounted in the rotor shell, and a stator assembly is arranged on the periphery of the rotor assembly. A rotor shaft is arranged in the middle of the rotor assembly, one side of the rotor shaft is sleeved with an inner rotor, an outer rotor is arranged on the periphery of the inner rotor, a high-pressure oil outlet cavity and a low-pressure oil return cavity are formed between the inner rotor and the outer rotor, the high-pressure oil outlet cavity and the low-pressure oil return cavity are communicated through an oil duct, and the oil duct flows through the rotating contact faces of the rotor shell, the oil pump shell and the rotor shaft. The utility model provides pressure lubrication while avoiding the risk of oil shortage for the rotation of the rotor, and is more reliable.

A kind of converging type pressure increasing gerotor pump.This application relates to the improvement of gerotor internal gear pump structure.By staggered compensation, avoid the flow pulsation caused by pump cavity volume change, and then realize the output pressure boost, and run smoothly.This application includes high pressure pump body, low pressure pump body and main shaft, the axis of outer rotor A and outer rotor B is arranged on one side of the main shaft, the axis of high pressure pump outer rotor is arranged on the other side of the main shaft, and the axis of outer rotor A is + alpha angle relative to horizontal line, the axis of outer rotor B is - alpha angle relative to horizontal line, alpha = 360 ° / 2N, N is the number of inner rotor teeth.This application adopts the ingenious design of rotor eccentric installation, realizes the pressure boost of pump, and the staggered compensation solves the flow pulsation caused by pump cavity volume change, provides stable flow for high pressure booster pump inlet.This application can be widely used in new energy vehicles, wind power, air conditioning, generator, industrial production, chemical industry, petroleum, metallurgy, water treatment and other fields, for conveying various liquids.

The utility model relates to a pump body structure and an ink path system of an ink-jet printer. The pump body structure comprises a first pump body unit, a second pump body unit and a third pump body unit, the second pump body unit is provided with a pumping-out mode and a pumping-in mode, and the working modes of the first pump body unit and the second pump body unit are set to be opposite; the medium flow channel is arranged between the first pump body unit and the second pump body unit and used for circulation and exchange of fluid between the first pump body unit and the second pump body unit. And one of the first pump body unit and the second pump body unit in the pump-out mode pumps fluid to the other one in the pump-in mode through the communicating flow channel. Compared with the prior art, the utility model improves the pumping suction force of the pump body and prolongs the service life at the same time.

The invention discloses a stepless pressure regulation output oil way of a double-oil-pipe gear pump. The oil way comprises an oil tank, a filter and a gear pump which are connected in sequence, the gear pump is further connected with a motor through a coupler, and the rotating speed of the motor is 150-5300 r / min. An oil outlet of the oil tank is connected with an oil inlet of the filter, an oil outlet of the filter is connected with the gear pump, and an oil return pipeline is connected between the gear pump and the oil tank; an oil outlet of the gear pump is connected with a three-way pipe, the three-way pipe is respectively connected with a pressure transmitter and an oil injection electromagnetic valve, and an oil outlet of the oil injection electromagnetic valve is connected with an oil injection pipeline. Compared with the prior art, the oil way and the control mode for stepless pressure regulation output of the double-oil-pipe gear pump have the advantages that stepless regulation of pressure behind the pump is achieved by regulating the rotating speed of the motor, and therefore combustion of different gears is achieved.

An electronic oil pump comprises a stator assembly and an electric control board assembly, the stator assembly is electrically connected with the electric control board assembly, the stator assembly comprises a stator core and a winding, the stator core can provide support for winding winding; the electronic oil pump comprises a shielding piece, the stator assembly, at least part of the shielding piece and the electric control board assembly are distributed along the axial direction of the electronic oil pump, at least part of the shielding piece is located between the stator assembly and the electric control board assembly; the material of the shielding piece is a conductive metal material, at least part of the shielding piece covers at least part of the winding; thus, it is beneficial to reduce the influence of the electromagnetic wave generated by the winding on the performance of the electric control board assembly.

The multi-stage sliding vane pump comprises a first-stage pump body, at least one middle-stage pump body and a last-stage pump body which are sequentially connected, the first-stage pump body, the middle-stage pump body and the last-stage pump body are independently arranged and each provided with a rotor provided with a sliding vane, the rotors are sleeved with eccentric parts, the inner walls of the eccentric parts and the rotors are eccentrically arranged, and eccentric cavities are formed. The eccentric part is wrapped with a pump shell, an annular pump cavity is formed between the pump shell and the eccentric part, the eccentric part is provided with a plurality of flow distribution holes communicating with the pump cavity and the eccentric cavity, and the pump shell is provided with interstage holes communicating with the adjacent pump cavities. Pump shafts extending outwards are arranged at the two axial ends of the rotors, and the adjacent pump shafts are detachably connected in the axial direction, so that at least one pump shaft can rotate to drive the rotors in the first-stage pump body, the middle-stage pump body and the last-stage pump body to rotate synchronously; through the building block type framework of the first-stage pump body, the extensible middle-stage pump bodies and the last-stage pump body, the number of the middle-stage pump bodies can be linearly increased or decreased, accurate adaptation of pressure is achieved, and the pressure solidification bottleneck of a traditional multi-stage pump is broken through.

To provide an electric pump which enables improvement of cooling efficiency of a motor part.SOLUTION: One embodiment of an electric pump of the invention includes: a motor part having a shaft rotatable around a center axis; a pump part which is connected to one end in an axial direction of the shaft and driven by power of the motor part to pump a fluid; and a housing which houses the motor part and the pump part. The housing is provided with: a motor chamber in which the motor part is disposed; a pump chamber in which the pump part is disposed; a supply path for causing the fluid to flow from the pump chamber to the motor chamber; and a return path for returning the fluid from the motor chamber to the pump chamber. The shaft has a hollow part which is open in the motor chamber at a first opening and is open in the pump chamber at a second opening. The pump part has: a suction port for suctioning the fluid from the outside; and a discharge port for discharging the fluid to the outside. The housing has a passage part connecting the second opening with the suction port. The return path is provided at the hollow part and the passage part.SELECTED DRAWING: Figure 1

The invention discloses a motor pump assisting in oil suction pressurization and forced heat dissipation. The motor pump comprises a main pump used for achieving liquid conveying and an auxiliary pump used for assisting in oil suction. The main pump is driven by a driving motor assembly and located in a shell of the motor pump, the auxiliary pump is arranged at an oil inlet of a front end cover of the shell and driven by an independent driving motor, and oil liquid enters an oil inlet of the main pump through a flow channel of the front end cover and a flow channel of the shell after auxiliary oil suction. An auxiliary pump sucks oil to assist a motor pump main pump to suck oil, meanwhile, a radiating pipe is arranged to lead out heat of a stator winding to reduce the internal temperature of the motor, radiating fins are arranged on shells to accelerate the radiating efficiency, meanwhile, in order to improve the radiating efficiency, a through type air channel is formed in the inner shell and the outer shell under the condition that an oil channel of the shells is not affected, and a fan is placed on the right side of the pump. The air flow rate at the radiating fins and the radiating air channel is accelerated, the oil suction capacity of the motor pump is finally improved, and the radiating capacity is enhanced. The problems of motor pump runner pressure loss, low heat dissipation efficiency and the like in the prior art are solved.

The invention relates to a pump module (10) for a drive unit of a motor vehicle, comprising a housing module (16) having an electronics housing (18) and a pump housing (20), a printed circuit board (22) accommodated in the electronics housing (18) and equipped with electronic components (24), wherein a potting material (28) is provided so that the electronic components (24) are encapsulated in a liquid-tight manner, at least one connection plug (30) provided on the electronics housing (18) and having electrical contacts (32) that are electrically connected to conductors of the printed circuit board (22), and two hydraulic pumps (12) mounted in the pump housing (20) and each having an electric motor (40), wherein the pump housing (20) is mounted axially on the electronics housing (18).