A PMG platen pump

Abstract

A PMG pressure plate pump is used to regulate the flow rate and pressure of an internal liquid. The pump includes: a base; a chassis; a guide vane fixedly connected to the base; a guide vane fixedly connected to the base and located within the chassis when viewed perpendicularly to the chassis; and a working chamber fixedly connected to the chassis and located on the side of the chassis opposite to the base. The guide vane rotates in a first direction and agitates the liquid in the working chamber. By rotating the guide vane in the first direction and agitating the liquid in the working chamber, the fluidity of the liquid is increased, improving the uniformity of the liquid flow. Furthermore, the design of the guide vane being fixedly connected to the base and located within the chassis effectively prevents liquid deposition at the bottom of the working chamber when the guide vane rotates.

Description

Technical Field

[0001] This utility model relates to the field of fluid power machinery, and in particular to a PMG pressure plate pump. Background Technology

[0002] A pressure plate pump is a fluid power device widely used in liquid transportation, pressure regulation, and hydraulic control systems. It primarily regulates the flow rate and pressure of the liquid within the chamber by moving the pressure plate to adapt to different operating conditions. Due to its compact structure and precise control, pressure plate pumps are commonly used in fuel delivery systems, lubricating oil circulation systems, and coolant flow control to ensure stable fluid delivery and maintain appropriate pressure within the system.

[0003] Currently, some pressure plate pumps on the market rely primarily on fluid pressure to propel liquid. The flow stability of the fluid within the pressure plate cavity directly affects the system's reliability. When the viscosity of the liquid in the pressure plate cavity is too high, or when the pumped liquid contains suspended particles or easily stratified liquids (such as emulsions), problems such as liquid deposition and unstable liquid flow can easily occur. In fuel delivery systems, localized fluid deposition can lead to uneven fuel supply, thus affecting engine combustion efficiency. In lubricating oil circulation systems, uneven fluid flow can result in insufficient lubrication in certain areas, increasing wear on mechanical components. In coolant delivery systems, poor fluid circulation can cause localized overheating, reducing cooling efficiency. Therefore, relying on fluid pressure to propel liquid has limitations in some application scenarios.

[0004] Therefore, it is necessary to provide a PMG pressure plate pump that can effectively prevent liquid from settling at the bottom and improve the uniformity of liquid flow. Utility Model Content

[0005] The purpose of this invention is to provide a PMG pressure plate pump that can effectively prevent liquid from settling at the bottom and improve the uniformity of liquid flow.

[0006] According to one aspect of this application, a PMG pressure plate pump is provided for regulating the flow rate and pressure of an internal liquid, the pressure plate pump comprising:

[0007] Base

[0008] The chassis is fixedly connected to the base;

[0009] The guide vane is fixedly connected to the base, and when viewed in a direction perpendicular to the chassis, the guide vane is located inside the chassis;

[0010] The working chamber is fixedly connected to the chassis and is located on the side of the chassis away from the base;

[0011] The guide vanes rotate along a first direction and stir the liquid in the working chamber.

[0012] More preferably, the working cavity includes:

[0013] The housing is fixedly connected to the chassis and is located on the side of the chassis opposite to the base;

[0014] The top cover is fixedly connected to the housing and is located on the side of the housing opposite to the chassis;

[0015] The housing is respectively engaged with the chassis and the top cover.

[0016] More preferably, the working cavity further includes:

[0017] An adjustment mechanism is fixedly connected to the top cover, and the adjustment mechanism is integrally connected through the top cover;

[0018] The piston rod is fixedly connected to the adjustment mechanism and is located at the end of the adjustment mechanism that is close to the housing.

[0019] More preferably, the working cavity further includes:

[0020] The pressure plate is slidably connected to the piston rod;

[0021] A return spring is fixedly connected to the pressure plate, the return spring surrounds the piston rod, and is located between the pressure plate and the adjusting mechanism.

[0022] More preferably, the piston rod extends in a second direction, and the adjusting mechanism drives the pressure plate to slide on the piston rod along the second direction;

[0023] The reset spring controls the pressure plate to slide and reset along the piston rod.

[0024] More preferably, the pressure plate abuts against the housing, and a pressure plate space is formed between the pressure plate, the housing, and the base;

[0025] The liquid is placed in the pressure plate space, and when the pressure plate slides along the second direction, it squeezes the liquid in the pressure plate space.

[0026] More preferably, the pressure plate pump further includes:

[0027] The control console is fixedly connected to the base, and is electrically connected to the adjustment mechanism and the guide vanes.

[0028] The control console controls the adjustment mechanism to drive the pressure plate and controls the rotation of the guide vanes.

[0029] More preferably, the pressure plate pump further includes an oil return section, which is provided with an oil return pipe with both ends fixedly connected to two opposite surfaces of the base, a safety valve fixedly connected to the oil return pipe, and a unit pump fixedly connected to the safety valve and the guide vane, and located between the safety valve and the guide vane.

[0030] More preferably, the oil return section further includes a balance spring, which is fixedly connected to the unit pump and the guide vane respectively, and surrounds the unit pump;

[0031] When the guide vane rotates along the first direction, the balance spring balances the guide vane.

[0032] More preferably, when the safety valve is opened, a portion of the liquid in the pressure plate space enters the unit pump along the return oil pipe.

[0033] This utility model has the following beneficial effects:

[0034] The guide vanes rotate along the first direction and stir the liquid in the working chamber, increasing the fluidity and improving the uniformity of the liquid flow. Furthermore, the design of the guide vanes being fixedly connected to the base and located within the chassis effectively prevents liquid deposition at the bottom of the working chamber when the guide vanes rotate. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a three-dimensional structural diagram of the pressure plate pump described in one embodiment of this application;

[0037] Figure 2 This is a schematic diagram of the planar structure of the pressure plate pump after disassembling the housing in one embodiment of this application;

[0038] Figure 3 This is an enlarged planar structural diagram of the unit pump after the working chamber of the pressure plate pump is disassembled according to one embodiment of this application.

[0039] Figure 4 As described in one embodiment of this application Figure 3 A schematic diagram of the planar structure of the cross section AA cut along section line A in the mid-plane structure;

[0040] Reference numerals: 100, Pressure plate pump; 10, Base; 20, Chassis; 30, Guide vane; 40, Working chamber; 41, Housing; 42, Top cover; 43, Adjustment mechanism; 44, Piston rod; 45, Pressure plate; 46, Return spring; 50, Pressure plate space; 60, Control console; 70, Oil return section; 71, Oil return pipe; 72, Safety valve; 73, Unit pump; 74, Balance spring; F1, First direction; F2, Second direction. Detailed Implementation

[0041] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0042] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] Please refer to Figure 1 - Figure 4 One embodiment of this application provides a PMG pressure plate pump 100 for regulating the flow rate and pressure of internal liquid. The pressure plate pump 100 is characterized in that it includes: a base plate, a ground plate, guide vanes 30, and a working chamber 40.

[0045] The chassis 20 is fixedly connected to the base 10. The guide vane 30 is fixedly connected to the base 10, and when viewed in a direction perpendicular to the chassis 20, the guide vane 30 is located within the chassis 20. The working chamber 40 is fixedly connected to the chassis 20 and is located on the side of the chassis 20 opposite to the base 10. The guide vane 30 rotates along a first direction F1 and stirs the liquid in the working chamber 40.

[0046] The chassis 20 is fixedly connected to the base 10, providing a stable foundation for the pressure plate pump 100 and ensuring the pump's stability during operation. The base 10 serves as a support structure, and the chassis 20 is tightly connected to it, jointly bearing the various forces and vibrations that may occur during pump operation. The fixed connection of the guide vanes 30 ensures its stability and reliability during operation. The vanes are located within the chassis 20; this arrangement allows the liquid to be effectively agitated and guided as it flows within the pump body, achieving uniform liquid distribution and flow. The working chamber 40 is the core component of the pressure plate pump 100 for liquid regulation. Its fixed connection to the chassis 20 ensures the sealing and stability between the working chamber 40 and the chassis 20. The working chamber 40 is located on the side of the chassis 20 facing away from the base 10; this arrangement allows for more efficient use of space during pump operation and facilitates maintenance and repair. The rotation of the guide vanes 30 is crucial for the pressure plate pump 100 to achieve liquid regulation. By rotating, the blades can agitate the liquid in the working chamber 40, achieving a uniform distribution and flow. This agitation not only helps improve the pump's working efficiency but also reduces liquid retention and sedimentation within the pump body, thereby extending the pump's service life.

[0047] More preferably, the working cavity 40 includes a housing 41 and a top cover 42.

[0048] The housing 41 is fixedly connected to the chassis 20 and is located on the side of the chassis 20 opposite to the base 10. The top cover 42 is fixedly connected to the housing 41 and is located on the side of the housing 41 opposite to the chassis 20. The housing 41 is snapped into the chassis 20 and the top cover 42 respectively.

[0049] The fixed connection of the housing 41 ensures a tight connection between the working chamber 40 and the chassis 20, preventing liquid leakage during operation. Simultaneously, the housing 41 is located on the side of the chassis 20 facing away from the base 10, allowing the working chamber 40 to more effectively contain and regulate the liquid, improving the overall efficiency of the pump. The fixed connection of the top cover 42 ensures the sealing of the working chamber 40, preventing external impurities from entering and affecting the liquid regulation effect. Furthermore, the design of the top cover 42 facilitates pump maintenance and repair; when cleaning or replacing components within the working chamber 40 is required, only the top cover 42 needs to be removed. The housing 41 is snapped into both the chassis 20 and the top cover 42. This snap-fit ​​connection is a simple and effective method, ensuring a tight connection between components while facilitating disassembly and replacement. In the PMG pressure plate pump 100, the snap-fit ​​connection of the housing 41 to the chassis 20 and the top cover 42 not only ensures the integrity and stability of the working chamber 40 but also improves the maintainability and replaceability of the pump. This connection method allows the pump body to be quickly repaired or replaced even if it wears or is damaged during long-term use, thereby extending the service life of the pump body.

[0050] More preferably, the working chamber 40 further includes an adjustment mechanism 43 and a piston rod 44.

[0051] The adjusting mechanism 43 is fixedly connected to the top cover 42, and the adjusting mechanism 43 integrally penetrates the top cover 42. The piston rod 44 is fixedly connected to the adjusting mechanism 43 and is located at the end of the adjusting mechanism 43 that is close to the housing 41.

[0052] The fixed connection of the regulating mechanism 43 ensures its stability and reliability during operation. It runs integrally through the top cover 42, allowing the regulating mechanism 43 to directly act on the liquid within the working chamber 40, achieving precise flow and pressure regulation. Simultaneously, the fixed connection prevents the regulating mechanism 43 from shaking or shifting during operation, ensuring accurate and consistent regulation. The piston rod 44, as the connecting component between the regulating mechanism 43 and the actuator, ensures that the regulating mechanism 43 accurately transmits power to the actuator (i.e., the piston rod 44), thereby achieving liquid regulation. The piston rod 44 is located at the end of the regulating mechanism 43 closest to the housing 41. This layout allows the piston rod 44 to directly act on the liquid within the working chamber 40, generating effective pressure changes and thus regulating the flow rate. This layout also helps reduce energy loss and interference during transmission, improving the pump's operating efficiency. The combination of the regulating mechanism 43 and the piston rod 44 is the core component of the PMG pressure plate pump 100 for achieving liquid regulation. The regulating mechanism 43 transmits power to the piston rod 44 through precise control and adjustment. The piston rod 44 then generates corresponding pressure changes within the working chamber 40 according to the instructions of the regulating mechanism 43, thereby achieving precise flow regulation. This design not only improves the pump's adjustment accuracy and stability but also enables the pump to adapt to different working environments and flow requirements.

[0053] More preferably, the working chamber 40 further includes a pressure plate 45 and a return spring 46.

[0054] The pressure plate 45 is slidably connected to the piston rod 44. The return spring 46 is fixedly connected to the pressure plate 45, surrounds the piston rod 44, and is located between the pressure plate 45 and the adjusting mechanism 43.

[0055] The sliding connection between the pressure plate 45 and the piston rod 44 allows the pressure plate 45 to reciprocate under the guidance of the piston rod 44. This design not only improves the compactness of the pump body's internal structure but also enables the pressure plate 45 to transmit pressure more effectively, achieving precise liquid regulation. Simultaneously, the sliding connection design reduces friction and wear, extending the pump's service life. The design of the return spring 46 is crucial for the PMG pressure plate pump 100 to achieve self-regulation and recovery functions. When the pressure plate 45 moves under external force, the return spring 46 is compressed or stretched, storing energy. When the external force disappears, the return spring 46 releases the stored energy, pushing the pressure plate 45 back to its initial position, thus ensuring the pump body can operate continuously and stably. Furthermore, the design of the return spring 46 surrounding the piston rod 44 not only improves the spring's stability but also avoids interference and wear during operation. The combination of the pressure plate 45 and the return spring 46 is an important guarantee for the efficient and stable operation of the PMG pressure plate pump 100. The pressure plate 45 is connected to the piston rod 44 via a sliding connection, realizing pressure transmission and liquid regulation. The return spring 46 stores and releases energy to ensure that the pressure plate 45 can accurately return to its initial position, thus realizing the pump body's self-adjustment and recovery function. This design not only improves the stability and reliability of the pump body, but also enables the pump body to adapt to different working environments and flow requirements.

[0056] More preferably, the piston rod 44 extends in the second direction F2, and the adjusting mechanism 43 drives the pressure plate 45 to slide along the piston rod 44 in the second direction F2. The return spring 46 controls the pressure plate 45 to slide and return to its original position along the piston rod 44.

[0057] The extension direction of the piston rod 44 is defined as the second direction F2. Specifying the second direction F2 helps determine the relative positions and action paths between the pressure plate 45, the return spring 46, and the adjusting mechanism 43. This directional definition makes the design and analysis of the pump body more precise and systematic. The adjusting mechanism 43, as the control core of the pump body, achieves precise adjustment of the liquid within the working chamber 40 by driving the pressure plate 45 to slide on the piston rod 44. This driving method not only improves the adjustment accuracy and response speed of the pump body but also enables the pump body to adapt to different flow and pressure requirements. Simultaneously, the sliding connection design reduces friction and wear, extending the service life of the pump body. The design of the return spring 46 is crucial for the pump body to achieve self-regulation and recovery functions. When the pressure plate 45 moves under external force, the return spring 46 is compressed or stretched, storing energy. When the external force disappears, the return spring 46 releases the stored energy, pushing the pressure plate 45 to slide back along the piston rod 44, thereby ensuring the pump body can operate continuously and stably. This design not only improves the stability and reliability of the pump body but also reduces malfunctions and damage caused by the displacement of the pressure plate 45. The extension direction of the piston rod 44, the drive of the adjusting mechanism 43 to the pressure plate 45, and the control of the return spring 46 to the sliding return of the pressure plate 45 together constitute the core functional components of the working chamber 40 of the PMG pressure plate pump 100. These features not only meet the basic requirements of the pump body for precise liquid regulation but also improve the stability, reliability, and service life of the pump body. At the same time, this design allows the pump body to adapt to different working environments and flow requirements, providing broad applicability and high-performance assurance for practical applications.

[0058] More preferably, the pressure plate 45 abuts against the housing 41, and a pressure plate space 50 is formed between the pressure plate 45, the housing 41, and the base 10. The liquid is placed in the pressure plate space 50, and when the pressure plate 45 slides along the second direction F2, it squeezes the liquid in the pressure plate space 50.

[0059] The tight contact between the pressure plate 45 and the housing 41 is crucial for ensuring the pump's internal sealing. This design prevents liquid leakage within the working chamber 40, ensuring the pump's stability and reliability during operation. Simultaneously, the contact between the pressure plate 45 and the housing 41 forms the pressure plate space 50, providing a necessary location for liquid storage and regulation. The pressure plate space 50 is the core component of the pump, used for liquid storage and regulation. The formation of this space is fundamental to the pump's functionality. The size and shape of the pressure plate space 50 can be designed according to actual needs to accommodate different flow and pressure requirements. Furthermore, the pressure plate space 50 ensures the pump can continuously and stably provide the required liquid during operation. The sliding of the pressure plate 45 along the second direction F2 is a key action for liquid regulation. Through sliding, the pressure plate 45 can compress the liquid within the pressure plate space 50, thereby changing the liquid's pressure and flow rate. This compression not only achieves precise liquid regulation but also improves the pump's response speed and regulation accuracy. Simultaneously, the sliding connection design reduces friction and wear, extending the pump's service life.

[0060] More preferably, the pressure plate pump 100 further includes a control console 60. The control console 60 is fixedly connected to the base 10, and is electrically connected to the adjustment mechanism 43 and the guide vane 30. The control console 60 controls the adjustment mechanism 43 to drive the pressure plate 45 and controls the rotation of the guide vane 30.

[0061] The control console 60, as the control center of the pump body, is fundamentally designed to ensure the normal operation of the pump body through its stable and reliable fixed connection. By being fixedly connected to the base 10, the control console 60 maintains a stable position and posture, thereby achieving precise control over the regulating mechanism 43 and the guide vanes 30. This design improves the overall stability and reliability of the pump body. The electrical connection allows the control console 60 to send control signals to the regulating mechanism 43, thereby achieving precise control over the sliding of the pressure plate 45. This control method not only improves the pump body's regulation accuracy and response speed but also allows the pump body to adapt to different flow and pressure requirements. Simultaneously, the electrical connection design simplifies the internal structure of the pump body and reduces maintenance costs. Through the electrical connection, the control console 60 can control the rotation of the guide vanes 30, thereby achieving precise regulation of liquid flow. This control method not only improves the pump body's flow regulation accuracy but also allows the pump body to adapt to different working environments and flow requirements. Furthermore, the electrical connection design allows the control console 60 to monitor the working status of the guide vanes 30 in real time, promptly detecting and handling potential faults. As the control center of the pump body, the control console 60 has comprehensive control functions. It not only enables precise control of the sliding of the pressure plate 45, but also controls the rotation of the guide vanes 30, thereby achieving comprehensive regulation of liquid flow. This integrated control function improves the overall performance and applicability of the pump, allowing it to adapt to the needs of more practical applications.

[0062] More preferably, the pressure plate pump 100 further includes an oil return section 70, which is provided with an oil return pipe 71 with both ends fixedly connected to two opposite surfaces of the base 10, a safety valve 72 fixedly connected to the oil return pipe 71, and a unit pump 73 fixedly connected to the safety valve 72 and the guide vane 30, and located between the safety valve 72 and the guide vane 30.

[0063] The design of the return oil pipe 71 allows the liquid inside the pump body to flow smoothly back to the other side of the base 10, thus achieving liquid recycling. This design not only improves the efficiency of the pump body but also reduces liquid waste. Simultaneously, the design of the return oil pipe 71 being fixedly connected to the base 10 at both ends ensures the stability and reliability of the return oil pipe 71, preventing malfunctions caused by loosening or breakage. The safety valve 72 is a key component for internal safety protection of the pump body. When the internal pressure of the pump body is too high, the safety valve 72 can automatically open to release excess pressure, thereby protecting other components inside the pump body from damage. This design not only improves the safety of the pump body but also extends its service life. Furthermore, the design of the safety valve 72 being fixedly connected to the return oil pipe 71 allows the safety valve 72 to accurately monitor the pressure within the return oil pipe 71 and react promptly. The unit pump 73 is an important component for the flow and regulation of liquid inside the pump body. Through the function of the unit pump 73, precise regulation and control of the liquid can be achieved, thereby meeting different flow and pressure requirements. Meanwhile, the design of the unit pump 73 being fixedly connected between the safety valve 72 and the guide vane 30 ensures that the unit pump 73 can operate stably under the protection of the safety valve 72, avoiding malfunctions caused by excessive liquid pressure. Furthermore, the unit pump 73 also improves the overall performance and applicability of the pump body.

[0064] More preferably, the oil return section 70 further includes a balance spring 74, which is fixedly connected to the unit pump 73 and the guide vane 30, and surrounds the unit pump 73. When the guide vane 30 rotates along the first direction F1, the balance spring 74 balances the guide vane 30.

[0065] The balance spring 74 is designed to balance the forces and torques generated by the guide vane 30 during rotation, thereby ensuring the stability and reliability of the guide vane 30. This design not only improves the overall performance of the pump body but also extends the service life of the guide vane 30. Simultaneously, the way the balance spring 74 is connected around the unit pump 73 allows it to function more effectively, avoiding malfunctions caused by improper connections. During the rotation of the guide vane 30, it is subjected to various forces and torques due to liquid flow and pressure changes. The balance spring 74, through its elasticity and connection, can balance and adjust these forces and torques, ensuring that the guide vane 30 rotates stably without excessive vibration or deviation. This mechanism not only improves the stability and accuracy of the pump body but also allows it to adapt to different working environments and flow requirements.

[0066] More preferably, when the safety valve 72 is opened, a portion of the liquid in the pressure plate space 50 enters the unit pump 73 along the return oil pipe 71.

[0067] This linkage demonstrates the close cooperation and efficient collaboration among the internal components of the pump. When the internal pressure of the pump becomes too high, reaching the set value of safety valve 72, safety valve 72 automatically opens to release the excess pressure. At this time, some liquid in the pressure plate space 50 flows along the return oil pipe 71 and enters the unit pump 73. This design not only ensures the safety of the pump but also realizes the recycling of liquid, improving the efficiency of the pump. The return oil pipe 71 guides some liquid in the pressure plate space 50 to the unit pump 73, realizing the recycling of liquid. This design reduces liquid waste and improves the resource utilization efficiency of the pump. Simultaneously, the recycling of liquid also helps maintain stable temperature and pressure inside the pump, thereby extending the service life of the pump. As an important safety component inside the pump, the automatic opening function of safety valve 72 plays a crucial role in protecting the pump from damage. When the internal pressure of the pump rises abnormally, safety valve 72 can respond quickly to release excess pressure, thereby preventing damage to the internal components of the pump due to excessive pressure. This design improves the safety and reliability of the pump.

[0068] In this way, the guide vanes 30 rotate along the first direction F1 and stir the liquid in the working chamber 40, thereby increasing the fluidity of the liquid and improving its flow uniformity. Furthermore, the design of the guide vanes 30 being fixedly connected to the base 10 and located within the chassis 20 effectively prevents liquid deposition at the bottom of the working chamber 40 when the guide vanes 30 rotate.

[0069] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A PMG pressure plate pump for regulating the flow rate and pressure of internal liquid, characterized in that, The pressure plate pump includes: Base The chassis is fixedly connected to the base; The guide vane is fixedly connected to the base, and when viewed in a direction perpendicular to the chassis, the guide vane is located inside the chassis; The working chamber is fixedly connected to the chassis and is located on the side of the chassis away from the base; The guide vanes rotate along a first direction and stir the liquid in the working chamber.

2. The PMG pressure plate pump according to claim 1, characterized in that, The working chamber includes: The housing is fixedly connected to the chassis and is located on the side of the chassis opposite to the base; The top cover is fixedly connected to the housing and is located on the side of the housing opposite to the chassis; The housing is respectively engaged with the chassis and the top cover.

3. The PMG pressure plate pump according to claim 2, characterized in that, The working chamber further includes: An adjustment mechanism is fixedly connected to the top cover, and the adjustment mechanism is integrally connected through the top cover; The piston rod is fixedly connected to the adjustment mechanism and is located at the end of the adjustment mechanism that is close to the housing.

4. A PMG pressure plate pump according to claim 3, characterized in that, The working chamber further includes: The pressure plate is slidably connected to the piston rod; A return spring is fixedly connected to the pressure plate, the return spring surrounds the piston rod, and is located between the pressure plate and the adjusting mechanism.

5. A PMG pressure plate pump according to claim 4, characterized in that, The piston rod extends in a second direction, and the adjusting mechanism drives the pressure plate to slide along the piston rod in the second direction. The reset spring controls the pressure plate to slide and reset along the piston rod.

6. A PMG pressure plate pump according to claim 5, characterized in that, The pressure plate abuts against the housing, and a pressure plate space is formed between the pressure plate, the housing, and the base; The liquid is placed in the pressure plate space, and when the pressure plate slides along the second direction, it squeezes the liquid in the pressure plate space.

7. A PMG pressure plate pump according to claim 6, characterized in that, The pressure plate pump also includes: The control console is fixedly connected to the base, and is electrically connected to the adjustment mechanism and the guide vanes. The control console controls the adjustment mechanism to drive the pressure plate and controls the rotation of the guide vanes.

8. A PMG pressure plate pump according to claim 7, characterized in that, The pressure plate pump also includes an oil return section, which is provided with an oil return pipe with both ends fixedly connected to two opposite surfaces of the base, a safety valve fixedly connected to the oil return pipe, and a unit pump fixedly connected to the safety valve and the guide vane, and located between the safety valve and the guide vane.

9. A PMG pressure plate pump according to claim 8, characterized in that, The oil return section also includes a balance spring, which is fixedly connected to the unit pump and the guide vane respectively, and surrounds the unit pump; When the guide vane rotates along the first direction, the balance spring balances the guide vane.

10. A PMG pressure plate pump according to claim 9, characterized in that, When the safety valve is opened, a portion of the liquid in the pressure plate space enters the unit pump along the return oil pipe.

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