CN220522787U - Vane pump - Google Patents

Abstract

The application discloses a vane pump, the vane pump includes a pump body, a rotating assembly, a plurality of rotating blades, a stator ring and a pressure application assembly. The pump body comprises a mounting shell, a first partition board and a second partition board, wherein the mounting shell forms a mounting cavity, a mounting slot and a communication space. The mounting housing defines a first flow passage and a second flow passage. The rotary assembly comprises a rotary shaft and a rotary wheel, and the rotary shaft is rotatably inserted into the mounting slot and forms a first oil accommodating chamber with the slot wall of the mounting slot. The outer periphery of the rotating wheel and the inner wall of the stator ring, the first partition plate and the space formed between the second partition plates are divided into a plurality of oil storage spaces by the rotating blades, the second partition plates form at least one oil guide hole communicated with the oil storage spaces, and the mounting shell forms at least one oil outlet channel communicated with the oil guide hole and the first oil accommodating chamber.

Description

Vane pump

Technical Field

The utility model relates to the technical field of hydraulic oil pumps, in particular to a vane pump.

Background

Vane pumps are a type of power element that is widely used in hydraulic systems. The vane pump rotates by utilizing the rotating wheel to drive the rotating vane inserted in the rotating wheel to contact with the inner wall of the stator ring so as to convey oil.

In the working process of the vane pump, the rotating shaft, the rotating wheel and the rotating vane can generate friction with other parts of the vane pump. In order to reduce friction force between parts of the vane pump during operation, most parts of the vane pump are assembled in a clearance fit mode, so that part of oil pumped by the vane pump can permeate between gaps of the parts. However, the gaps between the parts are small, so that the amount of oil which seeps into the gaps is small, the lubrication effect of the parts is poor, and the abrasion of the parts is still large. Fragments generated by abrasion of the parts can be accumulated in gaps among the parts, and the fragments can cause movement clamping stagnation of the parts, so that the vane pump heats during working, and the service life of the vane pump is greatly shortened.

Disclosure of Invention

One advantage of the present utility model is that a vane pump is provided that increases the amount of oil flowing to the gaps between the components, reduces friction between the components, reduces the temperature of the vane pump during operation, removes debris from the gaps, and increases the service life of the vane pump

Another advantage of the present utility model is to provide a vane pump that can regulate the amount of oil flowing to the gap between the parts as desired.

To achieve at least one of the above advantages, the present utility model provides a vane pump comprising:

the pump body comprises a mounting shell, a first partition plate and a second partition plate, wherein the mounting shell forms a mounting cavity, a mounting slot penetrating the mounting cavity and a communication space communicated with the mounting cavity, the first partition plate and the second partition plate are mounted in the mounting cavity at intervals along the radial direction of the mounting slot, the mounting shell forms a first communication channel and a second communication channel, and the first partition plate forms at least one first communication port communicated with the first communication channel and one second communication port communicated with the second communication channel;

the rotating assembly comprises a rotating shaft and a rotating wheel, the rotating shaft is rotatably inserted into the inserting groove in a manner of penetrating through the first partition plate and the second partition plate, a first oil accommodating chamber is formed between one end part of the rotating shaft and the groove wall of the inserting groove, one end part of the rotating shaft, which is far away from the An Chacao bottom wall, extends out of the mounting shell, the rotating wheel is sleeved on the rotating shaft and is positioned between the first partition plate and the second partition plate, the rotating shaft drives the rotating wheel to rotate, a plurality of sliding grooves are formed in the radial direction of the rotating wheel, and the sliding grooves are distributed at intervals along the circumference;

a plurality of rotary blades slidably inserted into the respective sliding grooves;

the stator ring is arranged in the mounting cavity, the rotating wheel is arranged on the inner side of the stator ring, the rotating blades are abutted against the inner wall of the stator ring under the action of centrifugal force, the space formed between the periphery of the rotating wheel and the inner wall of the stator ring, the first partition plate and the second partition plate is divided into a plurality of oil storage spaces by the rotating blades, the second partition plate forms at least one oil guide hole communicated with the oil storage space, and the mounting shell forms at least one oil outlet channel communicated with the oil guide hole and the first oil containing chamber;

the pressing assembly is arranged in the communication space, applies acting force on the stator ring along the radial direction of the inserting groove, so that an eccentric distance is formed between the rotating wheel and the stator ring, the first communication port and the second communication port are respectively positioned on two sides of a track where the pressing assembly drives the stator ring to move, and each oil storage space can be communicated with the first communication channel and the second communication channel successively.

According to an embodiment of the utility model, the mounting housing further forms at least one oil drain communicating with the mounting cavity for releasing oil released from the oil storage space into the respective gap.

According to an embodiment of the present utility model, the pressing assembly drives the moving track of the stator ring to extend along the axial direction of the mounting slot, so as to divide a space formed between the rotating wheel and the inner wall of the stator ring, the first partition plate, and the second partition plate into an oil suction area and an oil discharge area, and the oil guide hole corresponds to the oil suction area.

According to an embodiment of the utility model, the rotating shaft forms a cooling groove and a first flow port which is communicated with the cooling groove and the first oil containing chamber, the cooling groove extends along the axial direction of the rotating shaft, and the oil in the first oil containing chamber can flow in the cooling groove through the first flow port.

According to an embodiment of the present utility model, the installation housing includes a housing main body and a cover body, the cover body is detachable from the housing main body, the cover body forms the oil outlet channel, the housing main body forms the communication space, the installation cavity and the oil drain port, and the cover body and the housing main body form the An Chacao together.

According to an embodiment of the present utility model, the vane pump further includes a seal assembly including a first seal and at least a second seal, the first seal is installed between an end of the rotation shaft and the insertion groove formed by the housing main body, the second seal is disposed between the second partition plate and the cover body, a second oil receiving chamber is formed between the first seal, the rotation shaft and an inner wall of the insertion groove, the rotation shaft further forms a second flow port communicating the cooling groove and the second oil receiving chamber, the oil collected by the first oil receiving chamber can flow to the second oil receiving chamber through the cooling groove, and the housing main body further forms an oil drain passage communicating with the second flow port and the oil drain port.

According to an embodiment of the present utility model, the vane pump further includes a bearing set including a first bearing and a second bearing, the first bearing and the second bearing being mounted at both ends of the mounting groove, respectively, and both ends of the rotation shaft being supportingly inserted through the first bearing and the second bearing, respectively.

According to an embodiment of the present utility model, the vane pump further includes a flow rate control member, and the flow rate control member is installed in the oil guide hole formed by the second partition plate, so as to control the flow rate guided by the oil guide hole into the first oil accommodating chamber.

According to an embodiment of the present utility model, the pressing assembly includes an elastic member, a pressing member, and a connection seat, the elastic member is mounted in the communication space formed by the housing body, the connection seat abuts against the outer side of the stator ring, an end portion of the elastic member abuts against the connection seat, and an end portion of the elastic member away from the connection seat abuts against the pressing member, and the pressing member applies a force to the stator ring through the elastic member and the connection seat.

According to an embodiment of the present utility model, the pressing member includes an adjusting portion and an abutting portion, the abutting portion abuts against an end portion of the elastic member away from the connecting seat, the housing main body forms a threaded hole, an outer thread is formed on an outer periphery of the adjusting portion, the adjusting portion is threadably mounted in the threaded hole, and an end portion of the adjusting portion extending into the communicating space abuts against the abutting portion.

Drawings

Fig. 1 shows a schematic structural view of a vane pump according to the present utility model.

Fig. 2 shows a cross-sectional view of a vane pump according to the utility model at an angle.

Fig. 3 shows a cross-sectional view of a vane pump according to the utility model at another angle.

Fig. 4 shows an exploded view of a part of the structure of the vane pump according to the present utility model.

Fig. 5 shows an exploded view of a further part of the construction of the vane pump according to the utility model.

Fig. 6 shows a cross-sectional view of the housing body according to the utility model.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Referring to fig. 1 to 3, a vane pump according to a preferred embodiment of the present utility model, which includes a pump body 10, a rotary member 20, a plurality of rotary vanes 30, a stator ring 40, and a pressing member 50, will be described in detail below.

Referring to fig. 2 to 3, the pump body 10 includes a mounting housing 11, a first diaphragm 12, and a second diaphragm 13. The mounting housing 11 forms a mounting chamber 1101, an insertion groove 1102 penetrating the mounting chamber 1101, and a communication space 1103 communicating with the mounting chamber 1101. The first partition plate 12 and the second partition plate 13 are each mounted to the mounting chamber 1101 at intervals along the radial direction of the insertion groove 1102.

Referring to fig. 2, the rotating assembly 20 includes a rotating shaft 21 and a rotating wheel 22. The rotation shaft 21 is rotatably inserted into the insertion groove 1102 in a manner of penetrating through the first partition 12 and the second partition 13, wherein a first oil accommodating chamber 10001 is formed between one end of the rotation shaft 21 and a wall of the insertion groove 1102. An end of the rotating shaft 21 remote from the bottom wall of the insertion groove 1102 extends out of the mounting housing 11 to be connected to an external device such as a motor. The rotating wheel 22 is sleeved on the rotating shaft 21 and is located between the first partition plate 12 and the second partition plate 13, so that when the rotating shaft 21 is driven to rotate by the external device, the rotating shaft 21 drives the rotating wheel 22 to rotate between the first partition plate 12 and the second partition plate 13.

Referring to fig. 3 and 4, the rotating wheel 22 is formed with a plurality of sliding grooves 2201 in a radial direction, and the plurality of sliding grooves 2201 are circumferentially spaced apart. A plurality of the rotary blades 30 are slidably inserted into the respective sliding grooves 2201.

Referring to fig. 3, the stator ring 40 is mounted to the mounting cavity 1101. The rotating wheel 22 is disposed inside the stator ring 40. When the rotating assembly 20 drives the rotating blades 30 to rotate, the rotating blades 30 slide along the sliding grooves 2201 under the action of centrifugal force until the rotating blades abut against the inner wall of the stator ring 40, so that the space formed between the outer periphery of the rotating wheel 22 and the inner wall of the stator ring 40, the first partition 12 and the second partition 13 is divided into a plurality of oil storage spaces 10002 by the rotating blades 30.

The pressing member 50 is installed in the communication space 1103 and applies a force to the stator ring 40 in a radial direction of the insertion groove 1102 such that there is an eccentricity between the rotating wheel 22 and the stator ring 40.

Referring to fig. 3 and 4, the pump body 10 forms a first flow path 1001 and a second flow path 1002 in the mounting housing 11. The first partition 12 forms at least a first communication port 1201 communicating with the first communication passage 1001 and a second communication port 1202 communicating with the second communication passage 1002. The first communication port 1201 and the second communication port 1202 are respectively located at two sides of a track where the pressing assembly 50 drives the stator ring 40 to move. When the rotating assembly 20 drives the rotating blades 30 to rotate, each oil storage space 10002 can be sequentially communicated with the first communication port 1201 and the second communication port 1202. The oil in the first flow passage 1001 may finally flow to the second flow passage 1002 through the oil storage space 10002 or the oil in the second flow passage 1002 may finally flow to the first flow passage 1001 through the oil storage space 10002. That is, the rotation direction of the rotating assembly 20 driving the rotating vane 30 is different, and the oil inlet position and the oil outlet position of the vane pump are different. For the convenience of understanding the technical solution of the present utility model, the following embodiments will be described by taking the oil entering the first flow channel 1001 and the oil exiting the second flow channel 1002 as an example.

Specifically, the track of the pressing assembly 50 that drives the stator ring 40 to move extends along the axial direction of the insertion slot 1102, so as to divide the space formed between the rotating wheel 22 and the inner wall of the stator ring 40, the first partition 12, and the second partition 13 into an oil suction area and an oil discharge area. The first communication port 1201 opens into the oil suction area, and the second communication port 1202 opens into the oil discharge area. When the rotating assembly 20 drives the rotating blade 30 to rotate in a preset direction, the oil storage space 10002 in the oil suction area gradually increases in space volume along with the movement of the rotating blade 30, so that the oil storage space 10002 is in a negative pressure state, and the oil in the first flow passage 1001 is pumped into the oil storage space 10002 under the action of negative pressure. The oil storage space 10002 turned into the oil outlet zone is gradually reduced in space volume as the rotary vane 30 moves to release the oil accumulated in the oil storage space 10002 so that the oil can be discharged from the second flow passage 1002.

Referring to fig. 4, further, the vane pump further includes a bearing set 60.

The bearing set 60 includes a first bearing 61 and a second bearing 62. The first bearing 61 and the second bearing 62 are respectively mounted to both end portions of the insertion groove 1102. The rotation shaft 21 is inserted with both ends supported by the first bearing 61 and the second bearing 62, respectively.

Referring to fig. 2, it is noted that a portion of the oil stored in the oil storage space 10002 may be collected in the first oil receiving chamber 10001 through a gap between the rotating wheel 22 and the second partition 13, a gap between the second partition 13 and the rotating shaft 21, and a gap between the rotating shaft 21 and an inner wall of the second bearing 62. In this process, the oil flowing into between the rotating wheel 22 and the second partition 13 can reduce the friction between the rotating wheel 22 and the second partition 13 when rotating; the oil flowing into the space between the second partition 13 and the rotation shaft 21 can reduce the friction between the rotation shaft 21 and the second partition 13; the oil flowing into the space between the rotation shaft 21 and the second bearing 62 can reduce friction between the rotation shaft 21 and the second bearing 62 when rotating.

Referring to fig. 2, the second partition 13 preferably forms at least one oil guide hole 1301 communicating with the oil storage space 10002. The mounting housing 11 forms at least one oil outlet channel 1104, wherein the oil outlet channel 1104 is respectively communicated with the oil guide hole 1301 and the first oil accommodating chamber 10001. Part of the oil stored in the oil storage space 10002 may flow through the oil guide hole 1301 through the oil outlet channel 1104 to the first oil accommodating chamber 10001, so as to increase the oil amount in the first oil accommodating chamber 10001. In this way. The amount of oil flowing from the first oil accommodating chamber 10001 to the gap between the rotary shaft 21 and the inner wall of the second bearing 62, the gap between the second partition 13 and the rotary shaft 21, and the gap between the rotary wheel 22 and the second partition 13 increases, so that impurities between the gaps can be flushed out of the pump body 10 by a large amount of oil. At the same time, the increased amount of oil flowing increases the lubrication effect and also the cooling effect on the rotating assembly 20, the second partition 13 and the second bearing 62.

Referring to fig. 3, the mounting housing 11 also preferably defines at least one drain port 1105 in communication with the mounting cavity 1101. For releasing oil released from the oil storage space 10002 into each gap.

In an embodiment, the oil guide hole 1301 corresponds to the oil outlet area. The oil stored in the oil storage space 10002 in the oil outlet zone is extruded and can be discharged from the second flow passage 1002, and part of the oil flows into the first oil accommodating chamber 10001 due to extrusion force.

As a modified embodiment of an embodiment, the oil guide hole 1301 corresponds to the oil suction area. In this way, the oil storage space 10002 in the oil suction area sucks a large amount of oil under the action of the negative pressure, so that the amount of oil flowing to the first oil receiving chamber 10001 through the oil guide hole 1301 is limited, and compared with the previous embodiment, the influence on the pump oil amount of the vane pump is small, and the working efficiency of the vane pump is ensured.

Referring to fig. 2, the rotary shaft 21 preferably forms a cooling groove 2101 and a first flow port 2102 communicating the cooling groove 2101 with the first oil accommodating chamber 10001. The cooling groove 2101 extends along the axial direction of the rotating shaft 21, and the oil in the first oil accommodating chamber 10001 can circulate in the cooling groove 2101 through the first flow opening 2102, so that the temperature of the rotating assembly 20 and parts contacted with the rotating assembly 20 is reduced.

As a preferred embodiment, the mounting housing 11 includes a housing main body 111 and a cover 112. The cover 112 is detachable from the housing main body 111, and the cover 112 attached to the housing main body 111 is detached to repair and replace the internal components. The cover 112 forms the oil outlet passage 1104. The housing main body 111 forms the communication space 1103, the installation chamber 1101, and the drain port 1105, and the cover 112 and the housing main body 111 together form the insertion groove 1102.

Referring to fig. 2, further, the vane pump also includes a seal assembly 70.

The seal assembly 70 includes a first seal 71. The first seal 71 is installed between an end of the rotating shaft 21 and a portion of the insertion groove 1102 formed in the housing body 111 to prevent oil from being outwardly penetrated. A second oil accommodating chamber 10003 is formed between the first sealing member 71, the rotating shaft 21 and the inner wall of the insertion groove 1102.

Specifically, a portion of the oil stored in the oil storage space 10002 may be collected in the second oil receiving chamber 10003 through a gap between the rotary wheel 22 and the first partition 12, a gap between the first partition 12 and the rotary shaft 21, and a gap between the rotary shaft 21 and the first bearing 61. The oil flowing into the space between the rotating wheel 22 and the first partition 12 can reduce the friction between the rotating wheel 22 and the first partition 12 when rotating; the oil flowing into the space between the first partition 12 and the rotation shaft 21 can reduce the friction between the rotation shaft 21 and the first partition 12; the oil flowing into between the rotation shaft 21 and the first bearing 61 can reduce the friction between the rotation shaft 21 and the first bearing 61.

Referring to fig. 4, the seal assembly 70 further includes at least one second seal 72. The second seal 72 is disposed between the second partition 13 and the cover 112 to prevent oil from leaking out.

In one example, the first seal 71 is implemented to include an oil seal and the second seal 72 is implemented as a rubber ring.

Referring to fig. 2, the rotary shaft 21 preferably further forms a second flow port 2103 communicating the cooling groove 2101 with the second oil accommodating chamber 10003. The oil collected by the first oil accommodating chamber 10001 can flow to the second oil accommodating chamber 10003 through the cooling groove 2101 so as to increase the oil amount flowing to the second oil accommodating chamber 10003. In this way. The amount of oil flowing from the second oil accommodating chamber 10003 to the gap between the rotation shaft 21 and the inner wall of the first bearing 61, the gap between the first partition 12 and the rotation shaft 21, and the gap between the rotation wheel 22 and the first partition 12 increases, so that impurities between the gaps can be flushed out of the oil drain 1105 by a large amount of oil. At the same time, the increased amount of oil flowing increases the lubrication effect and also the cooling effect on the rotating assembly 20, the first partition 12 and the first bearing 61.

Preferably, the housing main body 111 further forms an oil drain passage 11101 communicating with the second flow port 2103 and the oil drain port 1105 to drain oil.

Referring to fig. 2, further, the vane pump also includes a flow control 80. The flow rate control member 80 is detachably mounted in the oil guiding hole 1301 formed by the second partition 13, so as to control the flow rate guided by the oil guiding hole 1301 into the first oil accommodating chamber 10001.

In a preferred embodiment, the hole wall of the oil guide hole 1301 is provided with an internal thread structure. The flow control 80 is implemented as a plug. When the plug is screwed into the oil guide hole 1301, oil in the oil storage space 10002 cannot enter the first oil accommodating chamber 10001 through the oil outlet channel 1104; when the oil guide hole 1301 is opened, the oil in the oil storage space 10002 may enter the first oil accommodating chamber 10001 through the oil outlet channel 1104, and the oil inlet amount in the first oil accommodating chamber 10001 increases.

Preferably, the flow rate control member 80 further has a control hole 8001, and the control hole 8001 allows a portion of the oil stored in the oil storage space 10002 to flow through the oil outlet channel 1104 to the first oil accommodating chamber 10001 via the control hole 8001. It can be appreciated that the aperture of the regulating hole 8001 is smaller than the aperture of the oil guide hole 1301, so as to reduce the flow rate flowing to the first oil accommodating chamber 10001.

Preferably, different flow rate control members 80 may form the control holes 8001 having different pore sizes, so that the flow rate flowing to the first oil accommodating chamber 10001 is controlled by replacing the flow rate control members 80.

Referring to fig. 2, in particular, the pressing assembly 50 includes an elastic member 51, a pressing member 52, and a connection seat 53. The elastic member 51 is attached to the communication space 1103 formed by the housing main body 111. The connection seat 53 is abutted against the outer side of the stator ring 40, one end of the elastic member 51 is abutted against the connection seat 53, and one end of the elastic member 51 away from the connection seat 53 is abutted against the pressing member 52. The pressing member 52 applies force to the stator ring 40 through the elastic member 51 and the connection seat 53.

Referring to fig. 5, the pressing member 52 preferably includes an adjusting portion 521 and an abutting portion 522. The abutting portion 522 abuts against an end portion of the elastic member 51 away from the connection seat 53. The housing main body 111 is formed with a screw hole 11102, an outer circumference of the adjustment portion 521 is formed with an external screw, and the adjustment portion 521 is screw-mountable to the screw hole 11102. The adjusting portion 521 extends into one end of the communication space 1103 and abuts against the abutting portion 522, so that the adjusting portion 521 is rotated to adjust the pressing force of the adjusting portion 521 against the abutting portion 522, thereby affecting the compression amount of the elastic member 51 and further adjusting the eccentricity transferred between the stator ring 40 and the rotating wheel 22.

In an example, the elastic member 51 is implemented as a spring.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present utility model have been fully and effectively realized. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Claims (10)

1. Vane pump, characterized in that it comprises:

the pump body comprises a mounting shell, a first partition plate and a second partition plate, wherein the mounting shell forms a mounting cavity, a mounting slot penetrating the mounting cavity and a communication space communicated with the mounting cavity, the first partition plate and the second partition plate are mounted in the mounting cavity at intervals along the radial direction of the mounting slot, the mounting shell forms a first communication channel and a second communication channel, and the first partition plate forms at least one first communication port communicated with the first communication channel and one second communication port communicated with the second communication channel;

the rotating assembly comprises a rotating shaft and a rotating wheel, the rotating shaft is rotatably inserted into the inserting groove in a manner of penetrating through the first partition plate and the second partition plate, a first oil accommodating chamber is formed between one end part of the rotating shaft and the groove wall of the inserting groove, one end part of the rotating shaft, which is far away from the An Chacao bottom wall, extends out of the mounting shell, the rotating wheel is sleeved on the rotating shaft and is positioned between the first partition plate and the second partition plate, the rotating shaft drives the rotating wheel to rotate, a plurality of sliding grooves are formed in the radial direction of the rotating wheel, and the sliding grooves are distributed at intervals along the circumference;

a plurality of rotary blades slidably inserted into the respective sliding grooves;

the stator ring is arranged in the mounting cavity, the rotating wheel is arranged on the inner side of the stator ring, the rotating blades are abutted against the inner wall of the stator ring under the action of centrifugal force, the space formed between the periphery of the rotating wheel and the inner wall of the stator ring, the first partition plate and the second partition plate is divided into a plurality of oil storage spaces by the rotating blades, the second partition plate forms at least one oil guide hole communicated with the oil storage space, and the mounting shell forms at least one oil outlet channel communicated with the oil guide hole and the first oil containing chamber;

the pressing assembly is arranged in the communication space, applies acting force on the stator ring along the radial direction of the inserting groove, so that an eccentric distance is formed between the rotating wheel and the stator ring, the first communication port and the second communication port are respectively positioned on two sides of a track where the pressing assembly drives the stator ring to move, and each oil storage space can be communicated with the first communication channel and the second communication channel successively.

2. The vane pump of claim 1 wherein said mounting housing further defines at least one drain port in communication with said mounting cavity for releasing oil released from said oil reservoir into each gap.

3. The vane pump of claim 2, wherein the pressing assembly drives the path of the movement of the stator ring to extend along the axial direction of the mounting groove, so as to divide a space formed between the rotating wheel and the inner wall of the stator ring, the first partition plate and the second partition plate into an oil suction area and an oil discharge area, and the oil guide hole corresponds to the oil suction area.

4. A vane pump according to claim 3, characterized in that the rotary shaft forms a cooling groove and a first flow opening communicating the cooling groove and the first oil accommodating chamber, the cooling groove extends in the axial direction of the rotary shaft, and the oil in the first oil accommodating chamber can flow in the cooling groove through the first flow opening.

5. The vane pump of claim 4 wherein said mounting housing includes a housing body and a cover, said cover being removable from said housing body, said cover defining said oil outlet passage, said housing body defining said communication space, said mounting cavity and said oil drain, said cover and said housing body together defining said An Chacao.

6. The vane pump of claim 5 further comprising a seal assembly including a first seal mounted between an end of the rotating shaft and the mounting groove formed in the housing body and at least a second seal disposed between the second partition and the cover, the first seal, the rotating shaft and the mounting groove inner wall forming a second oil receiving chamber, the rotating shaft further forming a second flow port communicating the cooling groove and the second oil receiving chamber, the oil collected in the first oil receiving chamber being flowable through the cooling groove to the second oil receiving chamber, the housing body further forming an oil drain passage communicating the second flow port and the oil drain port.

7. The vane pump of claim 6 further comprising a bearing set including a first bearing and a second bearing, the first bearing and the second bearing being mounted to the respective ends of the mounting slot, the two ends of the rotating shaft supportingly inserted through the first bearing and the second bearing, respectively.

8. The vane pump of claim 7 further comprising a flow control mounted in the oil guide hole formed in the second partition plate for controlling the amount of flow directed from the oil guide hole into the first oil receiving chamber.

9. The vane pump of claim 8, wherein the pressing assembly includes an elastic member mounted to the communication space formed by the housing body, a pressing member and a connection seat, the connection seat being abutted to an outer side of the stator ring, an end of the elastic member being abutted to the connection seat, and an end of the elastic member remote from the connection seat being abutted to the pressing member, the pressing member applying a force to the stator ring through the elastic member and the connection seat.

10. The vane pump of claim 9, wherein the pressing member includes an adjusting portion and an abutting portion, the abutting portion abuts against an end portion of the elastic member away from the connection base, the housing main body forms a screw hole, an outer periphery of the adjusting portion forms an external screw thread, the adjusting portion is threadably mounted in the screw hole, and an end portion of the adjusting portion extending into the communication space abuts against the abutting portion.