A vane pump with cleaning function

Abstract

This utility model discloses a vane pump with cleaning function, belonging to the field of hydraulic pump technology. It includes a vane pump body, a drive assembly movably connected to the vane pump body, and a self-adjusting filter assembly and a transmission assembly installed within the vane pump body. The vane pump body includes an annular shell and an oil outlet and an oil inlet constructed on both sides of the annular shell. The self-adjusting filter assembly includes a filter screen, which is connected to the oil inlet and a fixed block via a torsion spring. The filter screen has an inclined angle. The transmission assembly has several vane cavities at its center, and each vane cavity contains a vane body. By optimizing the compatibility of the slag removal structure with the pump body flow channel, optimizing the synergistic design of the vane and slag removal function, and optimizing the solid impurity separation and discharge method, the vane pump has a highly efficient slag removal function, preventing the accumulation of solid impurities, ensuring the normal operation and conveying efficiency of the pump body, extending the service life of the pump body, and reducing maintenance costs.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic pump technology, and in particular to a vane pump with cleaning function. Background Technology

[0002] A vane pump is a hydraulic pump that relies on the rotor's rotation to create a periodic change in the volume of the sealed working chambers through the close contact between the vanes and the inner surface of the stator under centrifugal force or pressurized oil. It is one of the commonly used power components in hydraulic systems. Its core components include the rotor, stator, vanes, and distributor plate. During operation, the rotor drives the vanes to rotate, and the vanes, stator, rotor, and distributor plate together form multiple sealed chambers. As the rotor rotates, the volume of the sealed chambers alternately increases (suction) and decreases (pressurization), thus completing the output of hydraulic energy.

[0003] Based on their working characteristics, vane pumps can be divided into single-acting vane pumps and double-acting vane pumps: The stator of a single-acting vane pump is circular, and the rotor is eccentrically set with the stator. The rotor completes one oil suction and one oil pressure cycle per revolution. The displacement can be adjusted by changing the eccentricity. It is mostly used as a variable displacement pump. The inner surface of the stator of a double-acting vane pump has a specific curve. The rotor is concentric with the stator. The rotor completes two oil suction and two oil pressure cycles per revolution. The displacement is fixed. It is mostly used as a fixed displacement pump.

[0004] Vane pumps have advantages such as compact structure, stable operation, uniform oil delivery, low noise, and high efficiency. However, they are sensitive to oil cleanliness and have a relatively complex structure. They are widely used in hydraulic systems of machine tools, injection molding machines, construction machinery, ships and other fields to provide a stable pressure oil source for actuators.

[0005] Vane pumps are widely used in industrial production to transport various fluid media. However, when the transported fluid contains solid impurities, these impurities tend to accumulate in the pump body, causing blockage of the flow channel, aggravating vane wear, and affecting the normal operation and service life of the pump. Traditional vane pumps lack effective slag removal functions or have unreasonable slag removal structure designs, resulting in low slag removal efficiency. Furthermore, the slag removal process can easily affect the pump's conveying efficiency and sealing performance, while also making maintenance inconvenient.

[0006] The purpose of this invention is to provide a vane pump with a cleaning function to solve the problems mentioned in the background art. Utility Model Content

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vane pump with a cleaning function, characterized in that it includes a vane pump body, a drive assembly movably connected to the vane pump body, and a self-adjusting filter assembly and a transmission assembly installed within the vane pump body. The vane pump body includes an annular housing and an oil outlet and an oil inlet constructed on both sides of the annular housing. A sealing disc is provided on the side of the annular housing that is not the same as the oil outlet and the oil inlet, and a motor housing is provided on the side opposite to the sealing disc. The self-adjusting filter assembly includes a filter screen, which is connected to the oil inlet and a fixed block via a torsion spring. The filter screen has an inclined angle. The transmission assembly has several vane cavities in its center, and each vane cavity is provided with a movable vane body. The vane body has the function of pushing and cleaning the inner annular wall of the drive assembly.

[0008] Furthermore, a stator is provided inside the vane pump body, and a protrusion with an inclined angle is provided on the inner side of the stator. Several threaded slots are opened on one side of the vane pump body at positions corresponding to the sealing disc.

[0009] Furthermore, the self-adjusting filter assembly is disposed inside the oil inlet, and a fixed arc plate is disposed between the self-adjusting filter assembly and the oil inlet to limit the maximum deflection angle of the filter. Several fixing blocks are disposed at positions corresponding to the oil inlet and the fixed arc plate, and each pair of fixing blocks is arranged as a group, with a torsion spring disposed between each group.

[0010] Furthermore, the sealing disc includes a sealing disc body, and a bolt is provided on one side of the sealing disc body. The bolt passes through the threaded groove to fix the sealing disc to one side of the vane pump body.

[0011] Furthermore, a rotor is provided inside the vane pump body, and the rotor has several vane cavities. The vane body is installed inside each vane cavity. A movable shaft is provided at one end of the rotor, and a motor is provided at the end of the shaft away from the rotor.

[0012] Furthermore, the blade body includes a blade head, one end of which is provided with an oblique scraper. One side of the oblique scraper is provided with irregular triangular serrations, which can cut fibrous impurities and prevent entanglement.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model comprises a vane pump body, a drive assembly movably connected to the vane pump body, and a self-adjusting filter assembly and a transmission assembly installed within the vane pump body. The vane pump body includes an annular shell and an oil outlet and an oil delivery port constructed on both sides of the annular shell. A sealing disc is provided on the side of the annular shell that is not the same as the oil outlet and the oil delivery port, and a motor housing is provided on the side opposite to the sealing disc. The self-adjusting filter assembly includes a filter screen, which is connected to the oil delivery port and a fixed block via a torsion spring. The filter screen has an inclined angle. The transmission assembly has several vane cavities in its center, and each vane cavity is equipped with a movable vane body. The vane body has the function of pushing and cleaning the inner annular wall of the drive assembly. By combining optimized slag removal structure and flow channel adaptability, optimized synergistic design of vanes and slag removal function, and optimized solid impurity separation and discharge methods, the vane pump has a highly efficient slag removal function, which can effectively avoid the accumulation of solid impurities, ensure the normal operation and conveying efficiency of the pump body, and at the same time have good sealing performance and convenient maintenance, extending the service life of the pump body and reducing maintenance costs. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a rear view schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of each component inside the annular housing of the vane pump in this utility model;

[0019] Figure 4 This is a schematic diagram of the self-adjusting filter assembly structure in this utility model;

[0020] Figure 5 This is a schematic diagram of the sealing disc structure in this utility model;

[0021] Figure 6 This is a schematic diagram of the transmission assembly and blades in this utility model;

[0022] Figure 7 This is a schematic diagram of the blade body structure in this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] In the picture:

[0025] 1. Vane pump body; 101. Annular housing; 102. Motor housing; 103. Oil outlet; 104. Oil inlet; 105. Threaded groove; 106. Stator; 107. Raised bar; 2. Drive assembly; 3. Self-adjusting filter assembly; 301. Torsion spring; 302. Fixing block; 303. Fixing arc disc; 304. Filter screen; 4. Sealing disc; 401. Sealing disc body; 402. Bolt; 5. Transmission assembly; 501. Rotor; 502. Vane cavity; 503. Shaft; 504. Motor; 6. Vane body; 601. Vane head; 602. Angled scraper; 603. Serrated edge. Detailed Implementation

[0026] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0027] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0028] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0029] Please see Figures 1 to 5 As shown, a vane pump with cleaning function includes a vane pump body 1, a drive assembly 2 movably connected to the vane pump body 1, and a self-adjusting filter assembly 3 and a transmission assembly 5 installed in the vane pump body 1. The vane pump body 1 includes an annular housing 101 and an oil outlet 103 and an oil delivery port 104 constructed on both sides of the annular housing 101. A sealing disc 4 is provided on the side of the annular housing 101 that is not the same as the oil outlet 103 and the oil delivery port 104, and a motor housing 102 is provided on the side opposite to the sealing disc 4. The self-adjusting filter assembly 3 includes a filter screen 304. The filter screen 304 and the oil delivery port 104 are connected to a fixed block 302 through a torsion spring 301, and the filter screen 304 has an inclined angle. The transmission assembly 5 has a plurality of vane cavities 502 in the center, and each vane cavity 502 is provided with a movable vane body 6. The vane body 6 has the function of pushing and cleaning the inner annular wall of the drive assembly 2.

[0030] Specifically, the vane pump body 1 has a stator 106 inside, and three protrusions 107 with an inclination angle of 15° are provided on the inner side of the stator 106. When the vane body 6 passes through, it can reduce the resistance. The protrusions 107 are evenly distributed circumferentially along the inner wall of the stator 106, and the inclination direction is opposite to the rotation direction of the rotor 501. When the rotor 501 rotates, the vane body 6 periodically passes through the stator protrusions 107. When the vane contacts the protrusions 107, the vane body 6 is instantly squeezed back into the vane cavity 502, and the fluid pressure in the cavity rises sharply. When it leaves the protrusions 107, the vane body 6 extends rapidly under the action of spring force, forming a negative pressure. The hydraulic pulse generated by this "squeeze-release" has an impact pressure ≥0.5MPa, which can impact the solid impurities remaining on the inner wall of the pipeline, causing them to detach and move with the main fluid towards the oil outlet 103. At the same time, the pulse action can reduce the accumulation of solid impurities in the vane cavity 502. Furthermore, a number of threaded slots 105 are opened on one side of the vane pump body 1 at the position corresponding to the sealing disc 4.

[0031] Specifically, the self-adjusting filter assembly 3 is disposed inside the oil inlet 104, and a fixed arc disk 303 is disposed between the self-adjusting filter assembly 3 and the oil inlet 104 to limit the maximum deflection angle of the filter 304. Several fixed blocks 302 are disposed at corresponding positions between the oil inlet 104 and the fixed arc disk 303, with each pair of fixed blocks 302 forming a group, and a torsion spring 301 is disposed between each group.

[0032] Specifically, the sealing disc 4 includes a sealing disc body 401, an oil-resistant rubber sealing ring is provided between the sealing disc body 401 and the annular housing 101, and a bolt 402 is provided on one side of the sealing disc body 401. The bolt 402 passes through the threaded hole groove 105 to fix the sealing disc 4 to one side of the vane pump body 1.

[0033] Specifically, a rotor 501 is located inside the vane pump body 1. Several vane cavities 502 are opened inside the rotor 501. A vane body 6 is installed inside a single vane cavity 502. A rotating shaft 503 is provided at one end of the rotor 501 for rotation and to transmit power to the rotor 501. A motor 504 is provided at the end of the rotating shaft 503 away from the rotor 501.

[0034] Specifically, the blade body 6 includes a blade head 601. One end of the blade head 601 is provided with an oblique scraper 602, which can scrape off sticky solid impurities (such as sludge, fine particle agglomerates) attached to the inner wall. It also has an oblique angle that can use fluid to impact solid impurities attached to the edge. The blade edge of the oblique scraper (602) is provided with a serrated structure 603, which can cut fibrous impurities.

[0035] Working principle: During use, the output end of the motor 504 drives the rotating shaft 503 to rotate. At the same time, the rotating shaft 503 drives the rotor 501 inside the stator 106 to rotate. The rotor 501 has several blade cavities 502. Each blade cavity 502 is equipped with a blade body 6. One end of the blade body 6 is equipped with an inclined scraper 602 with an inclined angle. The cutting edge of the inclined scraper 602 has a serrated structure 603, which can cut fibrous impurities and scrape off solid impurities adhering to the inner wall of the stator 106. The stator 106 is equipped with several inclined ridges 107. When the rotor 501 drives the blade body 6 inside the blade cavity 502 to rotate and pass through the ridges 107, it generates pulses to impact the solid impurities left inside, promoting the efficiency of removing solid impurities.

[0036] An adaptively adjustable filter assembly is installed inside the oil inlet 104 of the vane pump body 1. The filter assembly includes a filter screen 304, an angle adjustment component torsion spring 301, and a fixing block 302. The filter screen 304 is connected to the flow channel through a torsion spring hinge. Under normal conditions, the torsion spring 301 keeps the filter screen 304 at a 45° interception angle. When the pressure increases due to the accumulation of solid impurities, the water flow thrust overcomes the elastic force of the torsion spring 301, and the filter screen 303 rotates around the hinge to an angle close to parallel to the flow channel (minimum resistance). When the pressure decreases, the torsion spring automatically resets, preventing solid impurities from accumulating in the pump and ensuring the continuity and thoroughness of the slag removal process.

[0037] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vane pump having a cleaning function, characterized by: It includes a vane pump body (1), a drive assembly (2) movably connected to one end of the vane pump body (1), and a self-adjusting filter assembly (3) and a transmission assembly (5) installed in the vane pump body (1). The vane pump body (1) includes an annular housing (101) and an oil outlet (103) and an oil delivery port (104) constructed on both sides of the annular housing (101). A stator (106) is provided inside the annular housing (101), and a motor housing (102) is provided at one end of the annular housing (101). A sealing disc (4) is connected to the end of the annular housing (101) away from the motor housing (102). The self-adjusting filter assembly (3) includes a filter screen (304), the filter screen (304) and the oil inlet (104) are connected to the fixing block (302) by a torsion spring (301), and the filter screen (304) has an inclined angle; The transmission assembly (5) has several blade cavities (502) in the center. Each blade cavity (502) is provided with a movable blade body (6). The front end of the blade body (6) is provided with a cleaning component for removing solid impurities from the inner wall of the stator (106).

2. The vane pump with a cleaning function according to claim 1, characterized in that: The vane pump body (1) is provided with a stator (106) inside. The stator (106) is provided with a protruding strip (107) with an inclined angle on the inner side. Several threaded slots (105) are opened on one side of the vane pump body (1) corresponding to the sealing disc (4).

3. A vane pump with cleaning function according to claim 1, characterized in that: The self-adjusting filter assembly (3) is located inside the oil inlet (104), and a fixed arc plate (303) is provided between the self-adjusting filter assembly (3) and the oil inlet (104). Several fixed blocks (302) are provided at corresponding positions between the oil inlet (104) and the fixed arc plate (303). Every two fixed blocks (302) form a group, and a torsion spring (301) is provided between each group.

4. The vane pump with a cleaning function according to claim 2, characterized in that: The sealing disc (4) includes a sealing disc body (401). A plurality of bolts (402) are provided on one side of the sealing disc body (401). Each bolt (402) is provided in a corresponding threaded groove (105) to fix the sealing disc (4) to one side of the vane pump body (1).

5. A vane pump with a cleaning function according to claim 4, characterized in that: The vane pump body (1) is equipped with a rotor (501), and the rotor (501) has several vane cavities (502) inside. A vane body (6) is installed inside a single vane cavity (502). A rotatable shaft (503) is provided at one end of the rotor (501), and a motor (504) is provided at the end of the shaft (503) away from the rotor (501).

6. The vane pump with a cleaning function according to claim 2, characterized in that: The blade body (6) is provided with a cleaning component, which includes a blade head (601). One end of the blade head (601) is provided with an oblique scraper (602). The blade edge of the oblique scraper (602) has a serrated structure (603) for cutting off fibrous impurities in the fluid and scraping off particles adhering to the inner wall of the stator (106).

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