35 results about "Radial piston pump" patented technology

The invention discloses a corrosion-resistant radial plunger pump with a self-cleaning function, and relates to the technical field of radial plunger pumps, the corrosion-resistant radial plunger pump comprises a shell of a hollow structure, a vertically-arranged partition plate is fixed to the center of the interior of the shell in the length direction of the partition plate, and the length direction of the partition plate is perpendicular to the length direction of the shell; the partition plate divides the interior of the shell into two cavities, and the drainage plate is rotationally connected to one end, in the length direction of the partition plate, of the partition plate; according to the device, through cooperation of the drainage mechanism, the driving mechanism, the filter screens and other components, when the filter screen on one side is blocked, the filter screens generate displacement under the action of negative pressure suction, then the drainage plate is driven to turn, switching of the flowing direction of liquid flow is achieved, the blocked filter screen can be cleaned, the conveying work cannot be stopped, manual intervention is not needed in the process, and the working efficiency is improved. And shutdown operation is not needed, so that the production interruption time caused by blockage of the filter screen is shortened, the production efficiency is improved, and the maintenance frequency is reduced.

The invention provides a plunger assembly lubricated by a working medium and a radial plunger pump, and belongs to the field of plunger pumps. The plunger assembly lubricated by the working medium comprises a pump body and a plunger, a plunger hole allowing the plunger to reciprocate and a pumping channel with the middle communicated with the plunger hole are formed in the pump body, the pump body is provided with a columnar structure, a guide sleeve is arranged on the columnar structure in a sleeving mode, and a liquid inlet channel allowing the working medium to flow into the guide sleeve from the outside in a one-way mode is formed in the pump body. And the end wall of the guide sleeve is provided with a lubricating through hole through which a working medium in an inner cavity of the guide sleeve flows to the outer surface of the end wall and provides lubrication during working. The radial plunger pump lubricated by the working medium comprises the plunger assembly lubricated by the working medium. According to the radial plunger pump, a new pump structure is designed in the plunger assembly, the pump structure can pump a working medium to a part needing to be lubricated, and the working medium is used for providing lubrication for the working process of the radial plunger pump.

The invention provides a pressurizing assembly for a radial plunger pump and the radial plunger pump, and belongs to the field of plunger pumps. The pressurization assembly for the radial plunger pump comprises a pressurization shell and an impeller, the pressurization shell is provided with an inner cavity, the inner cavity comprises a pressurization area used for containing the impeller and a conveying area communicating with the periphery of the pressurization area, and a suction inlet used for sucking a working medium is formed in the shell wall, corresponding to the pressurization area, of the pressurization shell. The shell wall, corresponding to the conveying area, of the pressurizing shell is provided with a discharging opening used for discharging the working medium. During use, the impeller can rotate along with the rotating shaft in the pressurizing area so that the working medium can be discharged after being pressurized in the pressurizing shell. The radial plunger pump comprises the pressurizing assembly. According to the radial plunger pump, the working medium is pressurized in advance, so that the working medium can enter the plunger assembly more easily, the phenomena of cavitation, air suction and the like are reduced, and the radial plunger pump has better working capacity and longer service life.

This invention discloses a plunger motor pump, relating to the field of hydraulic pump technology. The motor rotor has an internal mounting cavity in which a radial plunger pump core assembly is housed. The assembly includes a cylinder connected to the motor rotor, a plunger slidably disposed within a radial plunger hole in the cylinder, and a fixed eccentric shaft fixedly inserted into and eccentrically positioned within the cylinder. The outer wall of the fixed eccentric shaft has an annular groove, and the plunger head is housed within this groove. When the cylinder rotates, the plunger reciprocates along the radial plunger hole under the constraint of the annular groove. The motor housing has a self-cooling channel connecting the external working medium to the cylinder's inlet side, allowing the working medium to flow through the self-cooling channel before being pressurized upon entering the cylinder to cool the motor. A distribution plate is located at the cylinder end to achieve liquid intake / discharge switching. This design solves the problems of low integration, large size, and complex cooling systems in existing motor pumps, achieving compact integration of the motor and pump and efficient self-cooling, meeting the needs of applications such as seawater desalination.

The invention discloses a shaft flow distribution structure for a roller pump and a using method, and relates to the technical field of hydraulic power elements, the shaft flow distribution structure comprises an oil distribution shaft, a cylinder body and a plurality of plungers, the oil distribution shaft is internally provided with an oil inlet axial oil way and an oil return axial oil way which are independent from each other, a plurality of oil inlet distribution windows and a plurality of oil return distribution windows are formed in the outer surface of the oil distribution shaft, a plurality of radial plunger cavities are evenly distributed in the circumferential direction of the cylinder body, one end of the cylinder body is connected with power equipment, and the plungers are connected with the side walls of the radial plunger cavities in a sliding and sealing mode. When the plunger moves in the direction away from the axis of the cylinder body, oil liquid is sucked into the radial plunger cavity through the oil inlet axial oil way and the oil inlet and distribution window, and when the plunger moves in the direction close to the axis of the cylinder body, the oil liquid in the radial plunger cavity is discharged through the oil return and distribution window and the oil return axial oil way on the oil distribution shaft. The structure is simple, using is convenient, and the performance and reliability of the radial plunger pump are effectively improved.

The application relates to a high-water-base radial plunger pump comprehensive performance test device, which comprises a T-shaped table, a test pump being detachably connected to the T-shaped table, the test pump being a double-input-shaft pump, one end of the input shaft of the test pump being detachably connected to the output shaft of a three-phase asynchronous variable-frequency motor through a first transmission part, the other end of the input shaft of the test pump being detachably connected to the output shaft of a loading system through a second transmission part, the test pump being provided with a total liquid inlet, a total liquid outlet, a plurality of lubricating oil inlets, the plurality of lubricating oil inlets being detachably connected to a lubricating system, the total liquid inlet being detachably connected to an auxiliary system, the total liquid outlet being detachably connected to a three-way pipe joint, the other end of the three-way pipe joint being detachably connected to the loading system, the third end of the three-way pipe joint and the loading system being detachably connected to the auxiliary system. The application can synchronously test the plunger pair characteristics and the whole pump performance of the plunger pump, so that the test result can more truly reflect the actual working characteristics of the hydraulic pump.

A radial piston pump (1) is disclosed. The pump (1) comprises a rotor (30) mounted for rotation on the pintle (40) of a manifold, the rotor (30) comprising a plurality of piston chambers (32), a piston (34) being mounted in each chamber (32) for reciprocal movement. The pump (1) comprises a P-port (8) for connecting the pump to a hydraulic system. The P-port (8) is a port connected to the piston chambers (32) such that, in use, fluid can flow between the P-port (8) and the piston chambers (32). The P-port 8 is connected to the piston chambers (32) by a P flow-path (6). A shut-off valve (4) is positioned along the P flow-path (6) such that when the shut-off valve (4) is in an off-position flow between the P-port (8) and the piston chambers (32) is prevented.

The utility model discloses a multi-union radial plunger pump which comprises a pump base, a transmission shaft of an eccentric structure is installed at the position of a center hole of the pump base, a multi-point connection flange plate is installed at the top of the transmission shaft, and a plurality of connection rods and a push rod are connected to the multi-point connection flange plate. The connecting rods and the push rod are distributed in the circumferential direction of the multi-point-position connecting flange plate. Pistons are installed at the other ends of the connecting rods and the push rod. A plurality of pump bodies corresponding to the pistons are installed on the pump base, the pump bodies are distributed in the circumferential direction of the pump base, and the transmission shaft drives the multi-point connection flange plate to drive the pistons to do linear reciprocating motion in the pump bodies. The utility model solves the problem that the reciprocating motion of the hydraulic plunger is influenced along with the reduction of the performance of the reset spring in the prior art.

A pump head (100) of a radial piston pump, and a radial piston pump (200). The pump head (100) of a radial piston pump comprises at least two piston cylinder mechanisms (2) and a housing (1), wherein the housing (1) comprises a transmission assembly (11), an upper cover (12), a lower cover (13), an upper housing (14) and a lower housing (15), the upper housing (14) and the lower housing (15) being snap-fitted together to form an accommodating space inside; the piston cylinder mechanisms (2) are mounted in the accommodating space in a rotationally symmetrical manner; the transmission assembly (11) is arranged in the accommodating space; the transmission assembly (11) is connected to the piston cylinder mechanisms (2); and the upper cover (12) is connected to the upper housing (14), the lower cover (13) is connected to the lower housing (15), the upper cover (12) is in communication with water inlets of all the piston cylinder mechanisms (2), and the lower cover (13) is in communication with water outlets of all the piston cylinder mechanisms (2). The radial piston pump (200) comprises the pump head (100) of a radial piston pump.

The invention discloses a polygonal radial plunger pump with special-shaped plungers and a working method of the polygonal radial plunger pump, and belongs to the technical field of hydraulic transmission. The transmission shaft, the polygonal stator and the eccentric rotor are arranged in the pump shell, the eccentric rotor is arranged outside the transmission shaft, the polygonal stator is arranged outside the eccentric rotor, the outer wall of the polygonal stator is attached to the special-shaped plunger, the special-shaped plunger is connected with the plunger spring, and the plunger spring is connected with the one-way valve shell. An oil inlet pipe is arranged at one end of the one-way valve shell, an oil outlet pipe is arranged at the other end of the one-way valve shell, and an oil suction valve core is arranged in the oil inlet pipe, is arranged at the oil inlet end of the oil inlet pipe and is elastically connected with the oil outlet end of the oil inlet pipe; and an oil outlet valve core is arranged in the oil outlet pipe, is arranged at the oil inlet end of the oil outlet pipe and is elastically connected with the oil outlet end of the oil outlet pipe. The problem of local abrasion caused by inclination of a traditional plunger is solved, and the service life is prolonged; the technical bottlenecks that a traditional radial plunger pump is poor in abrasion resistance, large in size and complex to maintain are solved.

The application discloses a driving motor, which comprises a motor shell, a stator assembly fixed in the motor shell, and a rotor assembly rotatably arranged in the stator assembly. The rotor assembly comprises a rotor support and a rotor core assembly. The rotor support is rotatably installed on the motor shell. A radial plunger pump is coaxially arranged in the rotor support. A camshaft of the radial plunger pump is in transmission connection with the rotor support. The radial plunger pump is fixedly connected with the motor shell at an end away from the camshaft. The radial plunger pump is provided with an oil inlet channel and an oil outlet channel. The motor shell is provided with an oil inlet port and an oil outlet port. The oil inlet port and the oil outlet port are respectively in communication with the oil inlet channel and the oil outlet channel. The application further discloses a wheel edge electric driving system integrated with an emergency steering function and using the driving motor. The application aims to provide a driving motor and a wheel edge electric driving system integrated with an emergency steering function, so that the vehicle can have the steering function when the main loop of the vehicle steering hydraulic system fails.

The invention provides a digital variable plunger pump unit and a radial plunger pump, and belongs to the technical field of plunger pumps. The digital variable plunger pump unit comprises a pump body and a plunger, a plunger hole and a pumping channel are arranged in the pump body, an inlet and an outlet of the pumping channel are provided with a suction valve and a flow control valve respectively, the flow control valve comprises a valve seat and a valve cavity arranged in the valve seat, and the valve seat is provided with a valve inlet, a valve outlet and a pressure relief opening which are communicated with the valve cavity. The flow control valve further comprises a jacking structure which elastically abuts against and seals the pressure relief opening from the outer side, and a piezoelectric ceramic piece which is used for lifting the jacking structure through extension to open the pressure relief opening at the high level is arranged between the valve seat and the jacking structure. The radial plunger pump comprises the plunger pump unit. According to the plunger pump unit, the flow control valve is arranged at the outlet of the plunger pump unit, so that accurate control over the output flow of the single plunger pump unit is achieved, and different use requirements are met.

The application discloses an experimental platform and a testing method of a digital variable radial plunger pump, and relates to the technical field of digital pump experimental testing; the experimental platform comprises a plunger unit, a pressure sensor, an accumulator, a flowmeter, a controller, a host computer and an encoder; the controller comprises a control unit, an encoder interface circuit, a host computer interface circuit, a switch valve driving circuit, a power conversion circuit and an interface circuit module; the experimental platform is designed for researching a new type of digital pump; the experimental platform can obtain the pressure of the plunger cavity of the digital pump in a normal working state and an unloading state in real time, the output flow and flow pulsation of the digital pump, and verifies whether the design of the digital pump meets the expectation; after the controller obtains feedback data, the proportion of the digital code stream is changed, the displacement is corrected, and thus the closed-loop control is completed.

An electrohydraulic unit for a vehicle having housing 2 with two ports 8, 9, pump 3 (e.g. radial piston pump) providing to and extracting fluid from the two ports, and two valves 4, 5 controlling flui

This invention belongs to the field of hydraulic component design technology, and relates to the design, process research and manufacturing of a static pressure balance structure for high and low pressure distribution of the distribution shaft in a radial piston pump with axial flow distribution. Specifically, it is a static pressure balance distribution shaft with arc-shaped pressure equalizing grooves. This solves the technical problem of poor static pressure balance in the overall structure of the distribution shaft of current radial piston pumps with axial flow distribution, resulting in unstable pump performance under high pressure and severe wear in the high-pressure area of ​​the distribution shaft. The static pressure balance distribution shaft with arc-shaped pressure equalizing grooves has high and low pressure arc grooves and high and low pressure distribution windows on it. Internally, there are high and low pressure channels connecting the high and low pressure grooves and the corresponding distribution windows. Pressure ports and suction ports are respectively opened on the high and low pressure arc grooves. A pressure equalizing groove is opened on both the left and right sides of the high and low pressure arc grooves. The pressure equalizing grooves are circumferential arc-shaped grooves, which are arranged in a wave-like pattern around the circumference of the distribution shaft, so that the distance t between the edge of the pressure equalizing groove and the edge of the high and low pressure arc groove is controlled within a certain range.

A radial piston pump for conveying fluid under high pressure has a suction port, a pressure port and a plurality of pump elements for conveying the fluid under high pressure from the suction port to the pressure port. Furthermore, the radial piston pump includes a high-pressure-resistant suction line structure connecting the suction port to at least one suction inlet of each pump element.

A radial piston pump, including a drive shaft having an eccentric and at least one piston-and-working chamber combination, wherein the piston-and-working chamber combination includes a working chamber and a piston. The radial piston pump includes at least two piston-and-working chamber combinations which extend radially from the drive shaft, wherein each working chamber is closed by a cover. The radial piston pump is equipped with at least one retaining ring for fixing all of the covers of the radial piston pump; and to a method for producing a radial piston pump.

A radial piston pump 1 is disclosed. The pump 1 comprises a rotor (30 Fig 2) mounted for rotation on the pintle (40 Fig 2) of a manifold, the rotor comprising a plurality of piston chambers (32 Fig 2), a piston (34 Fig 2) being mounted in each chamber 32 for reciprocal movement. The pump 1 comprises a P-port 8 for connecting the pump to a hydraulic system. The P-port 8 is a port connected to the piston chambers such that, in use, fluid can flow between the P-port 8 and the piston chambers. The P-port 8 is connected to the piston chambers by a P flow-path 6. A shut-off valve 4 is positioned along the P flow-path 6 such that when the shut-off valve 4 is in an off-position flow between the P-port 8 and the piston chambers is prevented.

The invention provides a plunger assembly and a radial plunger pump, and belongs to the field of plunger pumps. The plunger assembly comprises a pump body and a plunger, a plunger hole allowing the plunger to reciprocate and a pumping channel with the middle communicated with the plunger hole are formed in the pump body, and the plunger assembly further comprises a guide sleeve arranged on the pump body in a sleeving mode and matched with the pump body in a guiding mode in the movement direction of the plunger. An elastic piece used for driving the guide sleeve to move back to the pump body to achieve resetting is arranged between the guide sleeve and the pump body, and the end, extending out of the pump body, of the plunger makes contact with the inner surface of the end wall of the guide sleeve in a sliding mode and can move into the pump body under pushing of the end wall of the guide sleeve. A reset traction structure is arranged between the guide sleeve and the plunger, or an elastic pushing structure is arranged between the pump body and the plunger so that the plunger can reset along with the guide sleeve. The radial plunger pump comprises the plunger assembly. The guide sleeve is used for transmitting jacking force between the eccentric structure and the plunger, the guide sleeve is used for bearing lateral force, and eccentric wear of the plunger is avoided.

The invention relates to a highly-integrated electro-hydraulic valve control device, and belongs to the technical field of electro-hydraulic valves. Comprising a central valve block, an oil tank, a motor, an electromagnetic reversing assembly and a speed regulating valve assembly, the central valve block is a rectangular block, a radial plunger pump assembly is installed on the front face of the central valve block through a first open groove, and the motor is fixedly installed on the central valve block corresponding to the radial plunger pump assembly and connected with the radial plunger pump assembly through a coupler; a filter screen is installed on the back face of the central valve block through a second open groove, an oil tank is fixedly installed on the central valve block corresponding to the filter screen, the oil tank is connected with the filter screen through an oil suction nozzle, the first open groove is communicated with the second open groove, and oil can flow to the radial plunger pump assembly of the first open groove from the second open groove after being filtered by the filter screen. The top of the central valve block is provided with an electromagnetic reversing assembly, and the central valve block corresponding to the radial plunger pump assembly is provided with a speed regulating valve assembly. The device can be used for adjusting the oil volume conveying amount, and the movement precision and stability of the pump set unit are improved.

This invention discloses a radial plunger pump assembly, including a housing, a rotor rotatably connected inside the housing, a stator abutting against the outer side of the rotor, and two sides of the stator fixedly connected to the housing respectively. The outer wall of the rotor is uniformly and alternately provided with multiple protrusions and recesses. A main shaft is coaxially connected inside the rotor via a spline. The end of the main shaft extends out of the housing and is connected to a torque-increasing component. The side of the torque-increasing component away from the housing is connected to an external drive component. A plunger sleeve is fixedly connected to the stator. An oil passage is provided between the plunger sleeve, the stator, and the housing, connecting to an inlet and outlet oil pipe. A connecting hole is radially provided in the center of each mounting surface. A plunger is slidably connected to the connecting hole and inside the plunger sleeve. A roller is rolledly connected to one end of the plunger near the rotor, and a spring is provided at the other end of the plunger. A sealing end cap is provided at the end of the plunger sleeve away from the roller. This design overcomes the problems of high starting torque and difficult starting.

This invention relates to a bidirectional radial piston pump with axial flow distribution, comprising a front end cover, a drive shaft, a return ring, a pump housing, a spacer ring, a rear end cover, a distribution shaft, a guide post retainer, a cylinder body, pistons, bearings, and guide posts. Multiple internal bores of the cylinder body are fitted with pistons, each piston equipped with a guide post. Return rings and guide post retainers are mounted on both sides of the cylinder body. The return rings are used for circumferential jacking of the guide posts, enabling the radial piston pump to operate normally under low-speed conditions. The guide post retainers limit the deflection of the guide posts. This invention, through a novel piston structure, enables the radial piston pump (oil motor) to operate normally under low-speed conditions, reduces piston wear during operation, and extends the lifespan of the radial piston pump (oil motor) employing a distribution shaft structure.

The invention discloses an ionic liquid hydrogen compressor and a control strategy thereof, and relates to the technical field of compressors. The compressor comprises a hydraulic oil tank, a radial plunger pump, a first electromagnetic directional valve, a second electromagnetic directional valve, a third electromagnetic directional valve, a first pressure cylinder, a second pressure cylinder, a third pressure cylinder, a first-stage air inlet valve, a first-stage exhaust valve, a second-stage air inlet valve, a second-stage exhaust valve, a third-stage air inlet valve and a third-stage exhaust valve. The pressure range of an inlet of the first-stage air inlet valve is 1-90 MPa, and the pressure range of an outlet of the third-stage exhaust valve is larger than or equal to 90 MPa. In the working process of the compressor, the radial plunger pump sequentially drives the first pressurization cylinder, the second pressurization cylinder and the third pressurization cylinder to work to achieve hydrogen pressurization, when the inlet pressure fluctuates, the compressor can be matched with the corresponding pressurization cylinders in real time to work, and the compressor has the advantages of being wide in pressurization range, high in energy efficiency and low in cost. And the device can be suitable for various variable inlet pressure working conditions. The invention further discloses a control strategy of the compressor.

The invention relates to the technical field of plunger pumps, in particular to a plunger axis self-adaptive swing type radial plunger pump which comprises a pump body, a driving shaft rotating around an axis is arranged in the pump body, a front end cover is arranged at the front end of the pump body, a first rear end cover is arranged at the rear end of the pump body, and an eccentric shaft is arranged on the driving shaft. A plurality of plunger assemblies are evenly distributed in the circumferential direction of the axis of the eccentric shaft, each plunger assembly comprises an outer plunger sleeve and an inner plunger sleeve, plunger containing cavities are formed in the outer plunger sleeves and the inner plunger sleeves, the eccentric shaft is sleeved with a driving ring, the ends of the outer plunger sleeves are connected with a pump body ball pair, and the inner plunger sleeves are connected with a driving ring ball pair. The plunger assembly is further provided with a reset device in a matched mode, the outer plunger sleeve is tightly attached to the plunger upper cover under the action of the reset device and the pressure of oil in the plunger cavity, and the inner plunger sleeve is tightly attached to the driving ring. A flow channel communicated with the plunger cavity is formed in the pump body, a flow distribution component is arranged in the pump body in a matched mode, the driving shaft rotates, the plunger assembly reciprocates, the volume of the plunger cavity changes periodically, and oil suction and oil discharge are achieved.

A radial piston pump, in particular radial piston compressor, including a drive shaft with an eccentric, and at least one piston / working chamber combination, wherein the piston / working chamber combination includes a working chamber and a piston, wherein the radial piston pump includes at least two piston / working chamber combinations extending radially from the drive shaft, wherein each working chamber is closed with a cover, wherein the radial piston pump is equipped with a housing component with an integrated retaining ring for fixing all of the covers of the radial piston pump.

The present application relates to power structure technical field, especially a kind of plunger pump power structure, comprising: pump body, overall is columnar, pump body is provided with the working chamber of axial direction, the radial direction of pump body is provided with multiple slideway holes of communicating working chamber;Plunger, slidingly set in slideway hole, elastic member is arranged between pump body and plunger, to provide elastic force towards working chamber to plunger;Transmission shaft, rotation is set in working chamber, transmission shaft is provided with even number of eccentric discs, each eccentric disc is respectively corresponding with the axial position of one or more slideway holes, each eccentric disc is correspondingly provided with one eccentric disc on rotating shaft, and the installation direction of the eccentric disc is opposite.This scheme is used to solve the defects that vibration is large when high speed running in the prior art, it is difficult to realize high flow, realize the power structure of cam roller radial plunger pump with dynamic balance, compact structure and large working flow.

Fuel supply system for a natural gas-powered internal combustion engine, comprising a fuel tank (1) for storing liquefied natural gas and an electrically driven fuel pump (2) for pumping the liquefied natural gas at high pressure, wherein the fuel pump (2) is designed as a radial piston pump, which has at least one pump element (3) with a pump piston (4) which defines a pump working chamber (5) and can be driven in a stroke motion via a shaft (7) connected to an electric motor (6) and the fuel pump (2) is driven via the electric motor (6).

The invention provides a radial plunger pump lubricated by a working medium, and belongs to the field of plunger pumps. The radial plunger pump lubricated by the working medium comprises a shell, an eccentric rotating shaft and a plunger assembly, the plunger assembly comprises a pump body and a plunger, a pumping channel is formed in the pump body, an inlet of the pumping channel is communicated with an inner cavity of the shell, a shaft sleeve assembly is rotationally arranged on the eccentric rotating shaft, and a bearing plane is arranged on the periphery of the shaft sleeve assembly. The plunger is provided with a sliding shoe matched with the bearing plane, a lubricating runner is at least arranged in the shaft sleeve assembly, an inlet of the lubricating runner is communicated with the pump inlet in a sealed mode, and an outlet is located in the bearing plane. According to the radial plunger pump, when the inner cavity of the shell is in the negative pressure state, the working medium in the lubricating flow channel can be sucked into the position between the bearing plane and the sliding structure to form a liquid film, so that effective lubrication is provided, normal pumping of the working medium by the plunger assembly is not affected, and the radial plunger pump has high pumping efficiency.