Rotor, rotor assembly, and vane pump and assembling method therefor

Abstract

A rotor, and a vane pump having the rotor and an assembling method therefor. The vane pump (1) comprises a pump housing (100), a stator assembly (200), and a rotor assembly (300), and the pump housing (100) defines a mounting cavity (110), a liquid inlet hole (111), and a liquid outlet hole (112); the stator assembly (200) is provided with a through mounting hole (201) in a first direction, and the periphery of the mounting hole (201) is provided with a concave annular cavity (202) communicated with the mounting hole (201) in a surrounding manner; and the rotor assembly (300) and the stator assembly (200) together define a fluid space communicated with the liquid inlet hole (111) and the liquid outlet hole (112) in the annular cavity (202), the radial width of the fluid space is changed, the rotor assembly (300) comprises a shaft body (310), a plurality of blades and a linkage member (330), the shaft body (310) is rotatably mounted in the mounting hole (201) around the central axis of the shaft body, each blade is movably mounted on the side wall of the shaft body (310) in the radial direction of the shaft body (310), each blade comprises two first blades (321) arranged in pairs, the two first blades (321) are symmetrical about the central axis of the shaft body (310), and the linkage member (330) is in linkage connection to the first blades (321) arranged in pairs. The linkage member (330) helps to cooperatively adjust the first blades (321) arranged in pairs to be in target positions, thereby improving the use reliability of the vane pump.

Description

Rotor, rotor assembly, vane pump and assembly method thereof Technical Field

[0001] The present invention relates to the technical field of vane pumps, and in particular to a rotor, a vane pump having the rotor, and an assembling method thereof. Background Art

[0002] A vane pump is a pump in which the blades in the rotor assembly are in contact with the stator ring in the stator assembly, thereby pressing the sucked liquid from the oil inlet side to the oil discharge side. When the rotor of the vane pump rotates, it drives the blades under the action of centrifugal force, and the tips of the blades are in close contact with the inner surface of the stator. In this way, the working volume formed by the two adjacent blades, the rotor and the inner surface of the stator first absorbs oil from small to large and then discharges oil from large to small. When the blade rotates one circle, the oil absorption and discharge are completed once. However, in actual use, due to reasons such as blade installation deviation and wear and tear during use, it is easy for the blades to fail to move to the target position when the rotor rotates, resulting in the tip of the blade failing to adhere to the inner surface of the stator, reducing the reliability of the vane pump's oil absorption and discharge, thereby reducing the overall service life of the vane pump.

[0003] Vane pumps in commercial fully-automatic coffee machines place higher demands on machine stability and precision. Vane pumps primarily consist of a stator and vanes mounted on the stator. The vanes slide along the stator's internal curves, subjecting them to constant contact and friction. Typical stators and vanes are made of alloys, copper, or wear-resistant engineering plastics and rubber. However, these materials are expensive and complex to produce. Furthermore, under high loads, their load-bearing capacity and wear resistance often fall short, resulting in a shorter lifespan and impacting the performance of commercial fully-automatic coffee machines. Summary of the Invention

[0004] The main purpose of the present invention is to provide a vane pump and an assembly method thereof, aiming to solve the problem in the traditional technology that the vanes of the vane pump cannot move to the target position, resulting in reduced reliability of the vane pump.

[0005] To achieve the above object, the present invention provides a vane pump comprising:

[0006] The pump housing is formed with a mounting cavity, wherein the mounting cavity is provided with a liquid inlet hole and a liquid outlet hole;

[0007] a stator assembly disposed in the pump housing, wherein the stator assembly is provided with a mounting hole extending along a first direction, and an annular cavity is concavely formed around the periphery of the mounting hole, the annular cavity being in communication with the mounting hole; and

[0008] The rotor assembly and the stator assembly together define a fluid space in the annular cavity, the fluid space is respectively connected to the liquid inlet and the liquid outlet, and the radial width of the fluid space is set to be variable. The rotor assembly includes a shaft body, a plurality of blades and a linkage member. The shaft body extends along the first direction and is rotatably mounted on the mounting hole around its own central axis. Each of the blades is movably mounted on the side wall of the shaft body along the radial direction of the shaft body. Each of the blades includes two first blades arranged in pairs, and the two first blades arranged in pairs are symmetrical about the central axis of the shaft body. The linkage member is linked to each of the first blades arranged in pairs.

[0009] Optionally, the shaft body comprises a main shaft, a side wall of the main shaft is provided with a plurality of mounting grooves spaced apart along its circumference, a bottom of each mounting groove is provided with a movable hole, and each blade is movably mounted in the mounting groove;

[0010] The rotor assembly further includes a plurality of movable pins, each of which is movably disposed in a corresponding movable hole along a radial direction of the shaft and connected to a corresponding blade;

[0011] Wherein, the two movable holes corresponding to the two first blades arranged in pairs are connected, and the corresponding two movable pins are connected to form the linkage member.

[0012] Optionally, the blade has a first end located in the mounting groove and a second end exposed outside the mounting groove, and in the direction from the first end to the second end, at least a portion of the blade close to the second end is configured to be gradually narrowed in width.

[0013] Optionally, a groove is formed at an end of the main shaft close to each of the movable holes, and the groove is connected to each of the movable holes.

[0014] Optionally, the blades are arranged in even number at equal intervals along the circumference of the shaft, so that each of the blades is the first blade.

[0015] Optionally, the shaft body includes a main shaft and an extension shaft integrally formed along its axial direction, each of the blades is provided on the main shaft, and the extension shaft extends toward the opening of the mounting hole;

[0016] The vane pump further includes a driver having a rotary output shaft detachably connected to the extension shaft.

[0017] Optionally, the stator assembly includes two disc-shaped members spaced apart along the first direction, and an annular member connected between the two disc-shaped members, the two disc-shaped members are penetrated by the mounting holes, and the two disc-shaped members and the annular member jointly define the annular cavity;

[0018] The inner diameter of the annular member varies along its circumference. The two disc-shaped members have disc end surfaces close to each other. The disc end surfaces are concave to form at least one recessed portion, and the recessed portion is respectively connected to the liquid inlet and the liquid outlet.

[0019] Optionally, the outer peripheral side walls of the two disc-shaped members and the annular member are provided with anti-rotation grooves at corresponding positions along the axial direction;

[0020] The stator assembly further includes a stop pin, which is sequentially installed through the stop grooves of the disc-shaped member and the annular member.

[0021] Optionally, the installation cavity passes through the pump housing along the first direction to form two openings, and the liquid inlet and the liquid outlet are arranged on the sides of the openings;

[0022] The vane pump further comprises two end covers, which are detachably mounted on the two openings.

[0023] Optionally, the vane pump further includes:

[0024] a sealing cover connected to the shaft end of the main shaft and arranged at the notch of the groove; and

[0025] A sealing member is sandwiched between the shaft end of the main shaft and the sealing cover.

[0026] Optionally, the liquid inlet and the liquid outlet are arranged at intervals and extend side by side in the same direction, and the pump housing is provided with a bypass channel between the liquid inlet and the liquid outlet, and the bypass channel is connected to the liquid inlet and the liquid outlet;

[0027] The vane pump further comprises an opening and closing member, which is movably arranged in the bypass channel to adjust the conduction and cutoff of the bypass channel.

[0028] In addition, to achieve the above-mentioned object, the present invention also provides an assembly method of a vane pump, comprising:

[0029] Provide a shaft, a plurality of blades and a linkage member, and sequentially mount the blades on the shaft, wherein the first blades arranged in pairs are mounted on the shaft through the linkage member;

[0030] Providing a disk-shaped member as a first disk-shaped member, sleeve the mounting hole of the first disk-shaped member onto the outer side of a section of the shaft, and stop the disk end surface of the first disk-shaped member on one axial side of each blade;

[0031] Providing an annular member, and sleeve-fitting the annular member onto the radially outer side of each of the blades;

[0032] Providing another disk-shaped member as a second disk-shaped member, sleeve the mounting hole of the second disk-shaped member onto the outer side of the other section of the shaft, and stop the disk end surface of the second disk-shaped member at the other axial side of each blade;

[0033] Aligning the anti-rotation grooves of the first disk-shaped member, the annular member, and the second disk-shaped member;

[0034] A stop pin is provided, and the stop pin is sequentially installed through the stop grooves of the first disc-shaped member, the annular member, and the second disc-shaped member.

[0035] The present invention proposes a novel rotor comprising a rotating shaft, wherein the side wall of the rotating shaft at least in a partial shaft section is provided with a plurality of blade slots spaced apart along the circumference thereof, and a mounting hole is provided at the bottom of each blade slot;

[0036] Wherein, at least two of the blade slots are symmetrical about the central axis of the rotating shaft, and the corresponding mounting holes are connected.

[0037] Optionally, the number of the blade slots is even, and the blade slots are arranged at equal intervals along the circumference of the rotating shaft.

[0038] Optionally, the number of the blade slots is four.

[0039] Optionally, the rotating shaft includes a first shaft body and a second shaft body sequentially connected along the axial direction, each of the blade slots is provided on the first shaft body, and the second shaft body is used to connect to the driver.

[0040] Optionally, the first shaft body includes a laterally protruding step shaft section and an assembly shaft section arranged on both axial sides of the step shaft section, each of the blade grooves is opened on the side wall of the step shaft section, and the bottom surface of each blade groove is not higher than the radial side surface of the assembly shaft section.

[0041] Optionally, a groove is provided at the shaft end of the assembly shaft section away from the second shaft body, and the mounting holes are connected through the groove.

[0042] Optionally, the first shaft body and the second shaft body are integrally formed.

[0043] Optionally, a connecting portion is provided at the shaft end of the second shaft, and the connecting portion is adapted to be adapted to be connected with a docking portion provided on the output shaft of the driver.

[0044] In addition, to achieve the above objectives, the present invention further provides a rotor module, comprising:

[0045] A rotor, the rotor comprising a rotating shaft, wherein a plurality of blade slots are provided on a sidewall of at least a partial shaft section thereof at intervals along the circumference thereof, and a mounting hole is provided at the bottom of each blade slot, wherein at least two blade slots are symmetrical about the central axis of the rotating shaft, and the corresponding mounting holes are connected;

[0046] a plurality of blades, each corresponding to the plurality of blade slots, and each blade being slidably mounted in the blade slots along a radial direction of the rotating shaft; and

[0047] A plurality of pin bodies are movably mounted at each mounting hole along the radial direction of the rotating shaft and are connected to the corresponding blades, wherein the two pin bodies corresponding to the two symmetrically arranged blade slots are linked together to form a connecting piece.

[0048] In addition, to achieve the above-mentioned object, the present invention further provides a vane pump, including a rotor module, wherein the rotor module includes:

[0049] A rotor, the rotor comprising a rotating shaft, wherein a plurality of blade slots are provided on a sidewall of at least a partial shaft section thereof at intervals along the circumference thereof, and a mounting hole is provided at the bottom of each blade slot, wherein at least two blade slots are symmetrical about the central axis of the rotating shaft, and the corresponding mounting holes are connected;

[0050] a plurality of blades, each corresponding to the plurality of blade slots, and each blade being slidably mounted in the blade slots along a radial direction of the rotating shaft; and

[0051] A plurality of pin bodies are movably mounted at each mounting hole along the radial direction of the rotating shaft and are connected to the corresponding blades, wherein the two pin bodies corresponding to the two symmetrically arranged blade slots are linked together to form a connecting piece.

[0052] Furthermore, during the rotation of the shaft, the two pin bodies corresponding to the two symmetrically arranged blade grooves are linked to form a connecting piece, which can realize the linked connection of the corresponding two blades. The connecting piece helps to cooperate with the rotational centrifugal force of the shaft to adjust the corresponding two blades to their respective target positions, which can not only achieve the purpose of the tip of the blade being close to the inner wall of the stator module in the vane pump, but also reduce the sliding wear between the two to a certain extent, thereby helping to improve the working quality and reliability of the vane pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0054] FIG1 is a perspective schematic diagram of an embodiment of a vane pump provided by the present invention;

[0055] FIG2 is an exploded schematic diagram of the main structure of the vane pump in FIG1 ;

[0056] FIG3 is a perspective schematic diagram of the shaft body in FIG2 at a first viewing angle;

[0057] FIG4 is a perspective schematic diagram of the shaft body in FIG2 at a second viewing angle;

[0058] FIG5 is a perspective schematic diagram of the blade in FIG2 ;

[0059] FIG6 is a schematic structural diagram of the annular member in FIG2 ;

[0060] FIG7 is a schematic structural diagram of the disc-shaped member in FIG2 ;

[0061] FIG8 is a schematic top view of the structure of the vane pump in FIG1 when the driver is not assembled;

[0062] FIG9 is a schematic diagram of the cross-sectional structure at AA in FIG8 ;

[0063] FIG10 is a schematic diagram of the cross-sectional structure at BB in FIG8 ;

[0064] FIG11 is a schematic cross-sectional view of the CC portion of FIG8 ;

[0065] FIG12 is a flow chart of an embodiment of a method for assembling a vane pump provided by the present invention.

[0066] Description of Figure Numbers:

[0067] 1 vane pump; 100 pump housing; 110 mounting cavity; 111 liquid inlet hole; 112 liquid outlet hole; 113 bypass channel; 114 opening; 200 stator assembly; 201 mounting hole; 202 annular cavity; 210 disc-shaped member; 211 disc end surface; 212 recessed portion; 220 annular member; 230 anti-rotation groove; 240 anti-rotation pin; 300 rotor assembly; 310 shaft body; 311 main shaft; 311a annular stage; 311b assembly section; 311c mounting groove; 311d movable hole; 311e groove; 312 extension shaft; 312a connecting structure; 321 first blade; 321a first end; 321b second end; 330 linkage member; 340 movable pin; 400 driver; 410 output shaft; 411 docking structure; 500 end cover; 600 sealing cover; 700 sealing member.

[0068] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0070] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0071] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0072] Referring to Figures 1 to 2 and Figures 8 to 9, the present invention provides a vane pump 1, which includes a housing 100, a stator module 200 and a rotor module 300, wherein the housing 100 is formed with a cavity 110, and the cavity 110 is provided with a liquid inlet channel 111 and a liquid outlet channel 112; the stator module 200 is arranged in the housing 100, and the stator module 200 is penetrated by a through hole 201 along a first direction, and an annular cavity 202 is recessed around the periphery of the through hole 201, and the annular cavity 202 is communicated with the through hole 201; the rotor module 300 and the stator module 200 jointly define a fluid space in the annular cavity 202, and the fluid space is respectively communicated with the liquid inlet channel 111 and the liquid outlet channel 112, and the radial width of the fluid space is set to be variable.

[0073] The rotor module 300 includes a rotor, multiple blades, and multiple pins 340. The rotor includes a rotating shaft 310. The sidewall of the rotating shaft 310, at least in a portion of its shaft, is provided with multiple blade slots 311c spaced circumferentially. Each blade slot 311c has a mounting hole 311d at its bottom. At least two blade slots 311c are symmetrical about the central axis of the rotating shaft 310, and the corresponding mounting holes 311d are connected. Multiple blades are arranged one-to-one in correspondence with the blade slots 311c, and are slidably mounted in the blade slots 311c along the radial direction of the rotating shaft 310. Multiple pins 340 are movably mounted in each mounting hole 311d along the radial direction of the rotating shaft 310 and connected to the corresponding blades. The two blades corresponding to the two symmetrically arranged blade slots 311c form a pair of first blades 321, and the two first blades 321 are symmetrical about the central axis of the rotating shaft 310. The two pin bodies 340 corresponding to the two symmetrically arranged blade slots 311 c are linked together to form a connecting member 330 .

[0074] In the technical solution provided by the present invention, since the radial width of the fluid space is variable, when the rotating shaft 310 rotates and drives each blade to slide with the inner wall of the annular cavity 202, the working volume of the fluid space changes, achieving the purpose of driving external liquid into the fluid space through the liquid inlet channel 111, and driving liquid to be discharged from the fluid space through the liquid outlet channel 112. During this process, the two first blades 321 arranged in pairs are linked by a connecting member 330, which helps to cooperate with the centrifugal force of the rotation of the rotating shaft 310 and adjust the two first blades 321 arranged in pairs to their respective target positions. This can not only achieve the purpose of the tips of the first blades 321 closely contacting the inner wall of the annular cavity 202, but also reduce the sliding wear between the two to a certain extent, thereby helping to improve the working quality and reliability of the vane pump 1.

[0075] It will be appreciated that the vane pump 1 includes, but is not limited to, two major components: a working portion and a driving portion. The working portion includes the housing 100, stator module 200, and rotor module 300 as described above. Since the rotating shaft 310 in the rotor module 300 rotates along an axis in a first direction during operation, the driving portion can be configured as a single component or multiple components with a rotational output. Specifically, the driving portion can be configured as simply the driver 400, in which case the driver 400 can be a motor or rotary cylinder with a rotational output. Alternatively, the driving portion can be configured to include the driver 400 and a transmission assembly. When the driver 400 is a device with a rotational output, such as a motor or rotary cylinder, the transmission assembly can be configured as a component capable of adjusting the rotational output parameters, such as a gear set or worm gear mechanism, as needed. When the driver 400 is a device with a linear output, such as a linear cylinder, the transmission assembly can be configured as a component capable of converting linear displacement into rotational displacement, such as a rack-and-pinion mechanism or a screw mechanism, as needed.

[0076] However, for ease of understanding and in order to provide sufficient and stable rotational driving force to the rotating shaft 310, in the following embodiments, the working part is set to have only a driver 400, and the driver 400 is, for example, a motor, and the driver 400 has a rotating output shaft 410, which is connected to the rotating shaft 310, and the rotation axis of the output shaft 410 is basically collinear with the rotation axis of the rotating shaft 310.

[0077] In the working portion, the specific form of the housing 100 is not limited. Specifically, the housing 100 has a cavity 110 that extends through at least one outer wall of the housing 100 in the first direction and has an opening 114 formed therein (for ease of understanding, this opening 114 is hereinafter referred to as a first opening). The first opening allows the output shaft 410 of the driver 400 to extend into the cavity 110 and connect with the corresponding end of the rotating shaft 310 in the rotor module 300; alternatively, the first opening allows the corresponding end of the rotating shaft 310 to extend and connect with the output shaft 410 of the driver 400. Furthermore, the vane pump 1 also includes an end cap 500 (for ease of understanding, this end cap 500 is hereinafter referred to as a first end cap). The first end cap is sealed with the housing 100 and covers the first opening. The first end cap allows the output shaft 410 of the driver 400 and / or the rotating shaft 310 to pass through.

[0078] In a further embodiment, the housing 100 can have a cavity 110 extending through both ends of the housing 100 in the first direction, with two openings 114 formed in the outer walls. One of the two openings 114 is the aforementioned first opening, and the other is the second opening. Furthermore, the vane pump 1 includes two end covers 500, one of which is the aforementioned first end cover, and the other is the second end cover. The second end cover is sealed to the housing 100 and covers the second opening.

[0079] In view of the above, the liquid inlet channel 111 and the liquid outlet channel 112 are arranged on the side wall of the shell 100 between the first opening and the second opening. The specific form of the liquid inlet channel 111 / liquid outlet channel 112 is not limited: the liquid inlet channel 111 / liquid outlet channel 112 can be opened on the inherent shell structure of the shell 100, or can be opened in the thickened or thinned part after the local shell structure of the shell 100 is thickened or thinned. The liquid inlet channel 111 / liquid outlet channel 112 can be a straight hole, for example, extending along the radial, axial or tangential direction of the rotating shaft 310; the liquid inlet channel 111 / liquid outlet channel 112 can also be an arc hole, for example, extending along the circumference of the rotating shaft 310, or spirally extending along the circumference and axial direction of the rotating shaft 310; of course, the liquid inlet channel 111 / liquid outlet channel 112 can also be a combination of a straight hole and an arc hole, which will not be elaborated.

[0080] Please refer to Figures 8 and 11. In a further embodiment, the liquid inlet channel 111 and the liquid outlet channel 112 are arranged at intervals and extend side by side in the same direction. For example, in the figure, the liquid inlet channel 111 and the liquid outlet channel 112 are respectively arranged along the radial direction of the rotating shaft 310 and are arranged at intervals along the circumferential direction of the rotating shaft 310. The housing 100 is provided with a connecting channel 113 between the liquid inlet channel 111 and the liquid outlet channel 112, and the connecting channel 113 connects the liquid inlet channel 111 and the liquid outlet channel 112. Similar to the above-mentioned liquid inlet channel 111 and liquid outlet channel 112, there are no restrictions on the shape, extension direction, etc. of the connecting channel 113. For example, as shown in Figure 11, the connecting channel 113 is arranged to extend roughly tangentially to the rotating shaft 310 at its location. The vane pump 1 also includes an opening and closing member, which is movably provided on the connecting channel 113 to adjust the conduction and cutoff of the connecting channel 113. The opening and closing member can be specifically set as, for example, a regulating valve or other structure that can adjust the opening of the connecting channel 113, and specifically, the adjustment stroke of the opening and closing member can be associated with the pressure of the connecting channel 113, the liquid inlet channel 111 and / or the liquid outlet channel 112. For example, the opening and closing member can be associated with the pressure at the liquid outlet channel 112. When the pressure at the liquid outlet channel 112 exceeds a preset threshold, the opening and closing member is in an open state, connecting the liquid inlet channel 111 and the liquid outlet channel 112, so that the liquid at the liquid outlet channel 112 can flow to the liquid inlet channel 111 via the connecting channel 113; conversely, when the pressure at the liquid outlet channel 112 does not exceed the preset threshold, the opening and closing member is in a closed state, separating the liquid inlet channel 111 and the liquid outlet channel 112, so that the liquid at the liquid outlet channel 112 and the liquid at the liquid inlet channel 111 can flow independently.

[0081] Furthermore, in further embodiments, a filter structure may be provided at the liquid inlet channel 111, the liquid outlet channel 112, and / or the connecting channel 113, as needed, to filter the passing liquid and retain impurities. For example, when the filter structure is provided at the liquid inlet channel 111, it helps ensure that the liquid entering the annular cavity 202 is substantially free of impurities, thereby preventing blockage or sluggish movement of the orifices within the annular cavity 202.

[0082] In view of any of the above embodiments, in conjunction with Figures 2 to 4 , in a further embodiment, the rotating shaft 310 in the rotor module 300 can be configured to include a first shaft 311 and a second shaft 312 integrally formed along its axial direction, with each blade being mounted on the first shaft 311, and the second shaft 312 extending toward the opening of the through hole 201. The vane pump 1 also includes a driver 400 having a rotating output shaft 410 that is detachably connected to the second shaft 312. The arrangement of the first shaft 311 and the second shaft 312 can distinguish between the portion of the rotating shaft 310 where the blades are mounted and the portion connected to the driver 400, ensuring that the structural strength and other properties of the portions where the blades are mounted and the portion connected to the driver 400 meet the requirements. For example, by varying the structural parameters and materials of the first and second shafts 311, 312, the first and second shafts 311, 312 can have different wear resistance, stiffness, thermal expansion coefficients, and other properties.

[0083] The first shaft 311 and the second shaft 312 can be integrally formed, which helps to simplify the installation of the first shaft 311 and the second shaft 312, and makes the materials of the first shaft 311 and the second shaft 312 basically consistent, which helps to stabilize the structure. Of course, the first shaft 311 and the second shaft 312 can also be detachably connected or non-detachably connected after being separately formed. The detachable connection can be, but is not limited to, one or more of the following methods: screw fixation, snap fixation, adhesive fixation, magnetic fixation, etc.; the non-detachable connection can be, but is not limited to, one or more of the following methods: welding fixation, hot pressing fixation, etc.

[0084] Specifically, referring to FIG2 , in one embodiment, the shaft end of the second shaft 312 is provided with a connecting portion 312a, and the connecting portion 312a is adapted to be connected with the docking portion 411 provided on the output shaft 410 of the driver 400. The provision of the connecting portion 312a and the docking portion 411 helps to simplify and standardize the connection operation between the output shaft 410 of the driver 400 and the second shaft 312. The specific scheme of the connecting portion 312a and the docking portion 411 is not limited and can be provided according to actual needs, such as, but not limited to, one of the connecting portion 312a and the docking portion 411 is a screw connection, wherein the other has a threaded hole at a corresponding position, and the screw connection is threadedly connected to the threaded hole; one of the connecting portion 312a and the docking portion 411 is a buckle, wherein the other has a button hole at a corresponding position, and the buckle is buckled and fixed to the button hole, etc.

[0085] Referring to Figures 2 to 4 , in one embodiment, the rotating shaft 310 includes a first shaft body 311. A plurality of blade slots 311c are defined on the sidewall of the first shaft body 311 along its circumferential direction. Each blade slot 311c has a mounting hole 311d defined at its bottom. Each blade is movably mounted in the blade slot 311c. The rotor module 300 also includes a plurality of pins 340. Each pin 340 is movably positioned radially along the rotating shaft 310 through a corresponding mounting hole 311d and connected to a corresponding blade. The depth of the blade slot 311c is approximately radially aligned with the first shaft body 311. The blades are slidably coupled to the blade slots 311c along the radial direction of the first shaft body 311, and can be in a retracted state, in which they abut against the bottom wall of the blade slot 311c, and an extended state, in which they extend beyond the blade slot 311c and slidably abut against the inner wall of the annular cavity 202 at a corresponding position. Each pin 340 connects one blade to each blade slot 311c, enabling the blades to switch between retracted and extended positions. The length of the pin 340 is longer than the diameter of the assembly shaft section 311b. This ensures that when the pin 340 is inserted into the mounting hole 311d, at least one end of the pin 340 extends outward from the assembly shaft section 311b and into the blade slot 311c. Simultaneously, when the opposing first blade 321 is installed in the blade slot 311c, at least one first blade 321 extends outward from the stepped shaft section 311a. In other words, the length of the two first blades 321 plus the pin 340 is greater than the diameter of the stepped shaft section 311a.

[0086] In practical applications, depending on actual needs, the mounting hole 311d can be a countersunk hole formed at the bottom wall of the blade slot 311c, with one end of the pin 340 extending into the countersunk hole and the other end extending out of the countersunk hole. The two blade slots 311c corresponding to the two paired first blades 321 are also symmetrical about the central axis of the rotating shaft 310. Therefore, the two mounting holes 311d corresponding to the two paired first blades 321 are connected to form an elongated hole structure, and the two pins 340 corresponding to the two paired first blades 321 are connected to form an elongated pin structure, thereby forming the connecting member 330. The connecting member 330 is configured as a rigid structure, which makes the radial length of the connecting member 330 along the first shaft 311 basically fixed, that is, the spacing between the two first blades 321 arranged in a pair is basically fixed. In this way, when one of the two first blades 321 arranged in a pair abuts against the inner wall of the annular cavity 202 and performs a retraction movement of a certain stroke, the other is driven by the connecting member 330 to perform an extension movement of the same stroke. In this way, compared with the existing technology that relies on the rotational inertia of the blades or springs, it helps to ensure that each first blade 321 maintains abutment with the inner wall of the annular cavity 202 while appropriately reducing the abutment force between the two according to actual needs, thereby helping to reduce the friction loss between the two; or appropriately increase the abutment force between the two to ensure that the volume change of the fluid space between the two adjacent blades meets the requirements.

[0087] However, it should be noted that, under the action of the connector 330, when one first blade 321 connected thereto slides against the inner wall of one side of the annular cavity 202, the other first blade 321 connected thereto can be configured to directly slide against the inner wall of the other side of the annular cavity 202, or to leave a certain gap between the inner wall of the other side of the annular cavity 202. When the rotor rotates, the first blade 321 will produce a certain radial outward movement under the centrifugal force, which is sufficient to compensate for the above-mentioned gap and ensure that the first blade 321 slides against the inner wall of the annular cavity 202.

[0088] Specifically, in one embodiment, the first shaft body 311 includes a laterally protruding stepped shaft segment 311a and assembly shaft segments 311b disposed axially on either side of the stepped shaft segment 311a. Each blade slot 311c is defined in the sidewall of the stepped shaft segment 311a, and the bottom surface of each blade slot 311c is no higher than the radial side surface of the assembly shaft segment 311b. The provision of the stepped shaft segment 311a ensures that the blade slots 311c have sufficient depth while ensuring that the first shaft body 311 meets the required structural strength. The provision of the assembly shaft segment 311b allows for installation and coordination with the structures located axially on either side of the annular cavity 202 in the stator module 200, thereby ensuring that at least a portion of the stepped shaft segment 311a is contained within the annular cavity 202. During the operation of the vane pump 1, some liquid will flow through the vane groove 311c on both sides of the vane in the axial direction. By setting the bottom surface of the vane groove 311c no higher than the radial side surface of the assembly shaft section 311b, a stop structure is avoided at this location, which would cause unnecessary obstruction of the liquid flow process. In view of the above, in one embodiment, the vanes are arranged in an even number at equal intervals along the circumference of the rotating shaft 310, so that each of the vanes is a first vane 321, that is, each vane has another vane arranged in pair with it, and the two vanes are linked by a connecting member 330. In actual application, as shown in Figures 2, 4 and 10, the vanes are arranged in four equal intervals along the circumference of the rotating shaft 310. The four vanes divide the first shaft body 311 / stepped shaft section 311a into four equal parts, forming two groups of two first vanes 321 arranged in pairs. This reduces the number of pin bodies 340 to two, which helps to simplify the structure of the entire machine while ensuring the working quality of the entire machine.

[0089] Furthermore, in one embodiment, a groove 311e is provided at one axial end of the first shaft 311 near each of the mounting holes 311d, and the groove 311e is connected to each of the mounting holes 311d. When, as described above, the first shaft 311 includes a stepped shaft section 311a and two assembly shaft sections 311b, the axial end of the assembly shaft section 311b of the two assembly shaft sections 311b that is away from the second shaft 312 is provided with the groove 311e. The provision of the groove 311e, on the one hand, facilitates the forming of each mounting hole 311d, and on the other hand, facilitates the communication between each group of corresponding mounting holes 311d when each blade is a first blade 321. In addition, the provision of the groove 311e also helps to visualize the installation of each pin body 340 / connector 330, facilitating disassembly, replacement, and daily maintenance. The pin body 340 can be made of a cylindrical metal rod cut in half. In this way, the mounting hole 311d can be opened into a cross circular hole, so that the pin body 340 can be inserted into the circular hole. The circular outer contour fits the pin body 340 more closely. At the same time, the vertically cross-cutting planes contact each other more smoothly, reducing wear and reducing the difficulty of processing and assembly.

[0090] Furthermore, referring to FIG2 , in one embodiment, the vane pump 1 further includes a sealing cover 600 and a sealing member 700, wherein the sealing cover 600 is connected to the axial end of the first shaft body 311 and is provided at the notch of the groove 311e; and the sealing member 700 is clamped between the axial end of the first shaft body 311 and the sealing cover 600. The sealing cover 600 can movably cover the groove 311e to prevent the liquid in the vane groove 311c from leaking through the mounting hole 311d and the groove 311e. The sealing member 700 can be specifically configured as an elastic sealing ring, such as a rubber sealing ring, or as a rigid sealing ring, which can ensure a tight connection between the sealing cover 600 and the axial end of the first shaft body 311.

[0091] Referring to Figure 5 , in one embodiment, the blade has a first end 321a located within the blade slot 311c and a second end 321b exposed outside the blade slot 311c. The blade is configured to gradually narrow in width, at least near the second end 321b, as it moves from the first end 321a to the second end 321b. This minimizes the amount of sliding contact between the blade and the inner wall of the annular cavity 202, reducing frictional damping therebetween. Furthermore, guide surfaces are formed on the circumferential surfaces of the first end 321a on both sides of the rotating shaft 310. These guide surfaces are specifically inclined straight or curved surfaces, facilitating smooth flow of liquid.

[0092] In view of any of the above embodiments, the through-hole 201 and the annular cavity 202 in the stator module 200 can be independently defined by a single component, which is generally cylindrical. Alternatively, referring to Figures 2, 6, and 7, in one embodiment, the stator module 200 includes two impellers 210 spaced apart along the first direction, and a mounting ring 220 connected between the two impellers 210. The two impellers 210 are provided with the through-hole 201, and the two impellers 210 and the mounting ring 220 jointly define the annular cavity 202. The impellers 210 are generally disc-shaped or cylindrical blocks of relatively low height. The cross-sectional shape of the two impellers 210 can be set to a true circle as shown in Figure 7. In this case, the central axis of the impeller 210 is substantially collinear with the rotation axis of the rotating shaft 310, so that the axial, radial, circumferential, and tangential directions of the impellers 210 at corresponding locations are substantially aligned with the rotating shaft 310. The mounting ring 220 is a generally annular block. When the first shaft 311 includes the stepped shaft section 311a and two assembly shaft sections 311b as described above, the two impellers 210 are assembled with the two assembly shaft sections 311b, respectively. The mounting ring 220 surrounds the stepped shaft section 311a and maintains a certain distance from the outer sidewall of the stepped shaft section 311a to define a fluid space of the desired volume.

[0093] In view of the above, to achieve the variable radial width of the fluid space, the rotor's stepped shaft segment 311a can be configured as an eccentric wheel, i.e., the central axis of the stepped shaft segment 311a is offset from the rotational axis of the first shaft 311. Alternatively, the inner diameter of the annular cavity 202 can be configured to vary along its circumference. Specifically, as shown in FIG6 , in one embodiment, the inner diameter of the mounting ring 220 varies along its circumference. The mounting ring 220 has a wide portion and a narrow portion, and the width of the connecting portion between the wide portion and the narrow portion uniformly increases or decreases, resulting in a uniform variation in the inner diameter of the mounting ring 220. The outer contour of the mounting ring 220 is eccentric to the inner contour, resulting in a wall thickness of the mounting ring 220 that is thicker at one end and thinner at the other. The contact angle between the outer wall of the stepped shaft segment 311a and the inner wall of the mounting ring 220 is denoted by a, and a is generally set to be greater than 45 degrees and less than 100 degrees.

[0094] Based on this, in one embodiment, referring to Figure 2 and Figure 7 , the two impellers 210 have wheel end surfaces 211 close to each other, and the wheel end surfaces 211 are recessed to form at least one groove 212, which is respectively connected to the liquid inlet channel 111 and the liquid outlet channel 112. The groove 212 can be provided as one or more grooves 212. When there are multiple grooves 212, the arrangement of the grooves 212 on the wheel end surface 211 is not limited. For example, as shown in Figure 7 , when there are two grooves 212, the two grooves 212 can be provided on opposite sides of the impeller 210 in a radial direction.

[0095] Furthermore, when there are multiple grooves 212, different grooves 212 may be independently connected to the liquid inlet channel 111 and the liquid outlet channel 112, or the same groove 212 may be connected to both the liquid inlet channel 111 and the liquid outlet channel 112. When the same groove 212 is connected to both the liquid inlet channel 111 and the liquid outlet channel 112, a blade rotating between the liquid inlet channel 111 and the liquid outlet channel 112 may be used to separate the groove 212 into two independent chambers.

[0096] The groove 212 can be arranged to extend in an arc shape along the circumference of the impeller 210. At this time, the groove 212 has two opposite side walls located on the circumference of the impeller 210. The wall can be set as an inclined straight surface or a concave arc surface, which is conducive to the stable flow of liquid.

[0097] In one embodiment, the outer peripheral sidewalls of the two impellers 210 and the mounting ring 220 are provided with axially defined anti-rotation grooves 230 at corresponding locations. The stator module 200 further includes anti-rotation pins 240, which are sequentially installed through the anti-rotation grooves 230 of each impeller 210 and the mounting ring 220. The anti-rotation pins 240 are sequentially installed through the anti-rotation grooves 230 to effectively prevent the impellers 210 and the mounting ring 220 from rotating, ultimately ensuring a secure installation of the rotor module 300 and the stator module 200.

[0098] The assembly method of the rotor module 300 and the stator module 200 can be performed according to the following steps:

[0099] Step S1: providing a rotating shaft 310, a plurality of blades and a connecting member 330, and sequentially mounting the blades on the rotating shaft 310, wherein the first blades 321 arranged in pairs are mounted on the rotating shaft 310 via the connecting member 330;

[0100] Step S2: providing an impeller 210 as a first impeller, sleeve the through hole 201 of the first impeller onto the outer side of a section of the rotating shaft 310, and stop the wheel end surface 211 of the first impeller on one axial side of each blade;

[0101] Step S3: providing a mounting ring 220, and sleeve-fitting the mounting ring 220 onto the radially outer side of each blade;

[0102] Step S4: providing another impeller 210 as a second impeller, sleeve the through hole 201 of the second impeller onto the outer side of the other section of the rotating shaft 310, and stop the wheel end surface 211 of the second impeller at the other axial side of each blade;

[0103] Step S5: Aligning the first impeller, the mounting ring 220 and the anti-rotation groove 230 of the second impeller;

[0104] Step S6: providing a locking pin 240, and sequentially passing the locking pin 240 through the locking groove 230 of the first impeller, the mounting ring 220, and the second impeller.

[0105] In this embodiment, the rotating shaft 310, the plurality of blades and the connecting member 330 can be pre-assembled into a whole. Specifically, when some of the plurality of blades are first blades 321, the first blades 321 arranged in pairs are mounted on the rotating shaft 310 via the connecting member 330, and the remaining blades can be mounted on the rotating shaft 310 directly or indirectly via a mounting structure. For example, when, as described above, the rotating shaft 310 is provided with a blade slot 311c, and the blade slot 311c is provided with a mounting hole 311d, the blades are mounted on the corresponding through holes 201 via the pin body 340. More specifically, when the number of blades is set to four, and each blade is a first blade 321, after two connecting members 330 are inserted into the corresponding mounting holes 311d, each first blade 321 is connected to the protruding end of the connecting member 330 in the blade slot 311c.

[0106] When the first impeller is mounted on a section of the rotating shaft 310, specifically, on an assembly shaft section 311b of the rotating shaft 310, the axial displacement of each blade on the side of the first impeller is limited. When the mounting ring 220 is mounted radially outward of each blade, the radial displacement of each blade is limited. When the second impeller is mounted on another section of the rotating shaft 310, specifically, on another assembly shaft section 311b of the rotating shaft 310, the axial displacement of each blade on the side of the second impeller is limited. In this way, the first impeller, mounting ring 220, and second impeller can limit the axial and radial displacement degrees of freedom of the rotor module 300 without hindering the rotational movement of the rotor in the rotor module 300.

[0107] Next, by operating the positions of the first impeller, the mounting ring 220 and the anti-rotation grooves 230 of the second impeller, the anti-rotation grooves 230 are aligned and connected along the axial direction, and the anti-rotation pins 240 are operated and installed in each anti-rotation groove 230 in turn, which can effectively stop the rotation of the first impeller, the mounting ring 220 and the second impeller, and ultimately help ensure the stable installation of the rotor module 300 and the stator module 200.

[0108] 1 to 2, and 8 to 9, the present invention provides a vane pump 1, which includes a pump housing 100, a stator assembly 200, and a rotor assembly 300, wherein the pump housing 100 is formed with a mounting cavity 110, and the mounting cavity 110 is provided with a liquid inlet hole 111 and a liquid outlet hole 112; the stator assembly 200 is arranged in the pump housing 100, and the stator assembly 200 is provided with a mounting hole 201 along a first direction, and an annular cavity 202 is concavely formed around the outer periphery of the mounting hole 201, and the annular cavity 202 is communicated with the mounting hole 201; the rotor assembly 300 and the stator assembly 200 together define a fluid space in the annular cavity 202, and the fluid space is divided into The rotor assembly 300 includes a rotor, a plurality of blades and a linkage 330. The rotor includes a shaft 310. The shaft 310 extends along the first direction and is rotatably mounted on the mounting hole 201 around its own central axis. Each of the blades is movably mounted on the side wall of the shaft 310 along the radial direction of the shaft 310. Each of the blades includes two first blades 321 arranged in pairs. The two first blades 321 arranged in pairs are symmetrical about the central axis of the shaft 310. The linkage 330 is linked to each of the first blades 321 arranged in pairs.

[0109] In the technical solution provided by the present invention, since the radial width of the fluid space is variable, when the shaft 310 rotates and drives each blade to slide with the inner wall of the annular cavity 202, the working volume of the fluid space changes, achieving the purpose of driving external liquid into the fluid space through the liquid inlet hole 111, and driving liquid to be discharged from the fluid space through the liquid outlet hole 112. During this process, the two first blades 321 arranged in pairs are linked by a linkage 330, which helps to cooperate with the centrifugal force of the rotation of the shaft 310 and adjust the two first blades 321 arranged in pairs to their respective target positions. This can not only achieve the purpose of the tips of the first blades 321 closely contacting the inner wall of the annular cavity 202, but also reduce the sliding wear between the two to a certain extent, thereby helping to improve the working quality and reliability of the vane pump 1.

[0110] It will be appreciated that the vane pump 1 includes, but is not limited to, two major components: a working portion and a driving portion. The working portion includes the pump housing 100, stator assembly 200, and rotor assembly 300 as described above. Since the shaft 310 in the rotor assembly 300 rotates along an axis in a first direction during operation, the driving portion can be configured as a single component or multiple components with a rotational output. Specifically, the driving portion can be configured as simply the driver 400, in which case the driver 400 can be a motor or rotary cylinder with a rotational output. Alternatively, the driving portion can be configured to include the driver 400 and a transmission assembly. If the driver 400 is a rotational output, such as a motor or rotary cylinder, the transmission assembly can be configured as a component capable of adjusting the rotational output parameters, such as a gear set or worm gear mechanism, as needed. If the driver 400 is a linear output, such as a linear cylinder, the transmission assembly can be configured as a component capable of converting linear displacement into rotational displacement, such as a rack-and-pinion mechanism or a screw mechanism, as needed.

[0111] However, for ease of understanding and in order to provide sufficient and stable rotational driving force to the shaft body 310, in the following embodiments, the working part is set to have only the driver 400, and the driver 400 is, for example, a motor, and the driver 400 has a rotating output shaft 410, which is connected to the shaft body 310, and the rotation axis of the output shaft 410 is basically collinear with the rotation axis of the shaft body 310.

[0112] In the working part, the specific form of the pump housing 100 is not limited. Specifically, the installation cavity 110 of the pump housing 100 passes through at least one outer wall of the pump housing 100 in the first direction, and an opening 114 is formed on the outer wall (for ease of understanding, the opening 114 is defined as the first opening below). The first opening allows the output shaft 410 of the driver 400 to extend into the installation cavity 110 and connect with the corresponding end of the shaft body 310 in the rotor assembly 300; or the first opening allows the corresponding end of the shaft body 310 to extend and connect with the output shaft 410 of the driver 400. Furthermore, the vane pump 1 also includes an end cover 500 (for ease of understanding, the end cover 500 is defined as the first end cover below). The first end cover is sealed with the pump housing 100 and is provided at the first opening. The first end cover allows the output shaft 410 and / or the shaft body 310 of the driver 400 to pass through.

[0113] In a further embodiment, the mounting cavity 110 of the pump housing 100 can be provided through both ends of the outer wall of the pump housing 100 in the first direction, and two openings 114 are formed in the outer wall, one of the two openings 114 being the first opening described above, and the other being the second opening. Furthermore, the vane pump 1 also includes two end covers 500, one of the two end covers 500 being the first end cover described above, and the other being the second end cover. The second end cover is sealed to the pump housing 100 and is provided over the second opening.

[0114] In view of the above, the liquid inlet hole 111 and the liquid outlet hole 112 are arranged on the side wall of the pump housing 100 between the first opening and the second opening. The specific form of the liquid inlet hole 111 / liquid outlet hole 112 is not limited: the liquid inlet hole 111 / liquid outlet hole 112 can be opened on the inherent shell structure of the pump housing 100, or can be opened in the thickened or thinned part after the local shell structure of the pump housing 100 is thickened or thinned. The liquid inlet hole 111 / liquid outlet hole 112 can be a straight hole, for example, extending along the radial, axial or tangential direction of the shaft body 310; the liquid inlet hole 111 / liquid outlet hole 112 can also be an arc hole, for example, extending along the circumference of the shaft body 310, or spirally extending along the circumference and axial direction of the shaft body 310; of course, the liquid inlet hole 111 / liquid outlet hole 112 can also be a combination of a straight hole and an arc hole, which will not be elaborated.

[0115] Please refer to Figures 8 and 11. In a further embodiment, the liquid inlet 111 and the liquid outlet 112 are arranged at intervals and extend side by side in the same direction. For example, in the figure, the liquid inlet 111 / liquid outlet 112 are respectively arranged along the radial extension of the shaft body 310, and are arranged at intervals along the circumferential direction of the shaft body 310. The pump housing 100 is provided with a bypass channel 113 between the liquid inlet 111 and the liquid outlet 112, and the bypass channel 113 connects the liquid inlet 111 and the liquid outlet 112. Similar to the above-mentioned liquid inlet 111 / liquid outlet 112, the shape, extension direction, etc. of the bypass channel 113 are not limited. For example, as shown in Figure 11, the bypass channel 113 is arranged to extend roughly along the tangential direction of the shaft body 310 at its location. The vane pump 1 also includes an opening and closing member, which is movably provided on the bypass channel 113 to adjust the conduction and cutoff of the bypass channel 113. The opening and closing member can be specifically configured as, for example, a regulating valve or other structure that can adjust the opening of the bypass channel 113, and specifically, the adjustment stroke of the opening and closing member can be associated with the pressure of the bypass channel 113, the liquid inlet hole 111 and / or the liquid outlet hole 112. For example, the opening and closing member can be associated with the pressure at the liquid outlet hole 112. When the pressure at the liquid outlet hole 112 exceeds a preset threshold, the opening and closing member is in an open state, connecting the liquid inlet hole 111 and the liquid outlet hole 112, so that the liquid at the liquid outlet hole 112 can flow to the liquid inlet hole 111 via the bypass channel 113; conversely, when the pressure at the liquid outlet hole 112 does not exceed the preset threshold, the opening and closing member is in a closed state, separating the liquid inlet hole 111 and the liquid outlet hole 112, so that the liquid at the liquid outlet hole 112 and the liquid at the liquid inlet hole 111 can flow independently.

[0116] In a further embodiment, a filter structure may be provided at the liquid inlet 111, the liquid outlet 112, and / or the side channel 113 as needed to filter the passing liquid and retain impurities. For example, when the filter structure is provided at the liquid inlet 111, it helps ensure that the liquid entering the annular cavity 202 is substantially free of impurities, thereby preventing blockage or sluggish movement of the orifices within the annular cavity 202.

[0117] In view of any of the above embodiments, in conjunction with Figures 2 to 4 , in a further embodiment, the shaft body 310 in the rotor assembly 300 can be configured to include a main shaft 311 and an extension shaft 312 integrally formed along its axial direction, with each blade being mounted on the main shaft 311, and the extension shaft 312 extending toward the opening of the mounting hole 201. The vane pump 1 also includes a driver 400 having a rotating output shaft 410 that is detachably connected to the extension shaft 312. The arrangement of the main shaft 311 and the extension shaft 312 allows for the separation of the portion of the shaft body 310 where the blades are mounted and the portion connected to the driver 400, ensuring that the structural strength and other properties of the portions where the blades are mounted and the portion connected to the driver 400 meet the desired requirements. For example, by varying the structural parameters and materials of the main shaft 311 and the extension shaft 312, the main shaft 311 and the extension shaft 312 can have different wear resistance, rigidity, thermal expansion coefficient, etc.

[0118] The main shaft 311 and the extension shaft 312 can be integrally formed, which helps to simplify the installation of the main shaft 311 and the extension shaft 312, and makes the materials of the main shaft 311 and the extension shaft 312 basically consistent, which helps to stabilize the structure. Of course, the main shaft 311 and the extension shaft 312 can also be detachably connected or non-detachably connected after being separately formed. The detachable connection can be, but is not limited to, one or more of the following methods: screw fixation, snap fixation, adhesive fixation, magnetic fixation, etc.; the non-detachable connection can be, but is not limited to, one or more of the following methods: welding fixation, hot pressing fixation, etc.

[0119] Specifically, referring to FIG. 2 , in one embodiment, a connecting structure 312a is provided at the shaft end of the extension shaft 312. The connecting structure 312a is adapted to be connected to a docking structure 411 provided on the output shaft 410 of the driver 400. The provision of the connecting structure 312a and the docking structure 411 helps to simplify and standardize the connection operation between the output shaft 410 of the driver 400 and the extension shaft 312. The specific embodiments of the connecting structure 312a and the docking structure 411 are not limited and can be provided according to actual needs. For example, but not limited to, one of the connecting structure 312a and the docking structure 411 is a screw-type connector, the other of which has a threaded hole at a corresponding position, and the screw-type connector is threadedly connected to the threaded hole; or one of the connecting structure 312a and the docking structure 411 is a buckle, the other of which has a button hole at a corresponding position, and the buckle is buckled and fixed to the button hole.

[0120] In conjunction with Figures 2 to 4, in one embodiment, the shaft body 310 includes a main shaft 311, and the side wall of the main shaft 311 is provided with a plurality of mounting grooves 311c spaced apart along its circumference. The bottom of each mounting groove 311c is provided with a movable hole 311d, and each blade is movably mounted in the mounting groove 311c; the rotor assembly 300 also includes a plurality of movable pins 340, each of which is movably provided in the corresponding movable hole 311d along the radial direction of the shaft body 310 and connected to the corresponding blade. The groove depth direction of the mounting groove 311c is roughly the radial direction of the main shaft 311; the blade is slidably connected and matched with the mounting groove 311c along the radial direction of the main shaft 311, so as to have a retracted state in which it is movable to abut against the bottom wall of the mounting groove 311c, and an extended state in which it is movable to extend out of the mounting groove 311c and slide against the inner cavity wall of the annular cavity 202 at the corresponding position. Each movable pin 340 is connected to each blade and each mounting slot 311 c in a one-to-one correspondence, so as to realize the mutual switching of each blade between the retracted state and the extended state.

[0121] In practical applications, depending on actual needs, the movable hole 311d can be a countersunk hole formed at the bottom wall of the mounting slot 311c, with one end of the movable pin 340 extending into the countersunk hole and the other end extending out of the hole. The two mounting slots 311c corresponding to the two paired first blades 321 are also symmetrical about the central axis of the shaft 310. Therefore, the two movable holes 311d corresponding to the two paired first blades 321 are connected to form an elongated hole structure, and the two movable pins 340 corresponding to the two paired first blades 321 are connected to form an elongated pin structure, thereby forming the linkage member 330. The linkage 330 is configured as a rigid structure, which makes the radial length of the linkage 330 along the main shaft 311 basically fixed, that is, the spacing between the two first blades 321 arranged in pairs is basically fixed. In this way, when one of the two first blades 321 arranged in pairs abuts against the inner wall of the annular cavity 202 and performs a retraction movement of a certain stroke, the other is driven by the linkage 330 to perform an extension movement of the same stroke. In this way, compared with the existing technology that relies on the rotational inertia of the blades or springs, it helps to ensure that each first blade 321 maintains abutment with the inner wall of the annular cavity 202 while appropriately reducing the abutment force between the two according to actual needs, thereby helping to reduce the friction loss between the two; or appropriately increase the abutment force between the two to ensure that the volume change of the fluid space between the two adjacent blades meets the requirements.

[0122] However, it should be noted that, under the action of the linkage 330, when one first blade 321 connected thereto slides against the inner wall of one side of the annular cavity 202, the other first blade 321 connected thereto can be configured to directly slide against the inner wall of the other side of the annular cavity 202, or to be configured to leave a certain gap between the inner wall of the other side of the annular cavity 202. When the rotor rotates, the first blade 321 will produce a certain radial outward movement under the action of centrifugation, which is sufficient to compensate for the above-mentioned gap and ensure that the first blade 321 slides against the inner wall of the annular cavity 202.

[0123] Specifically, in one embodiment, the main shaft 311 includes a laterally projecting annular step 311a and mounting sections 311b disposed axially on either side of the step 311a. Each mounting groove 311c is defined in the sidewall of the step 311a, with the bottom surface of each mounting groove 311c no higher than the radial side surface of the mounting section 311b. The provision of the annular step 311a ensures that the mounting groove 311c has sufficient depth while ensuring the main shaft 311 has the required structural strength. The provision of the mounting sections 311b allows for mounting and mating with the structures of the stator assembly 200 located axially on either side of the annular cavity 202, thereby ensuring that at least a portion of the annular step 311a is contained within the annular cavity 202. During the operation of the vane pump 1, part of the liquid will flow through the mounting groove 311c on both sides of the axial direction of the vane. By setting the bottom surface of the mounting groove 311c not higher than the radial side surface of the assembly section 311b, a stop structure is avoided at this location, which would cause unnecessary obstruction of the liquid flow process.

[0124] In view of the above, in one embodiment, the blades are arranged in an even number at equal intervals along the circumference of the shaft body 310, so that each blade is a first blade 321, that is, each blade has a paired blade, and the two blades are linked by a linkage 330. In actual application, as shown in Figures 2, 4, and 10, the blades are arranged at equal intervals along the circumference of the shaft body 310. The four blades divide the main shaft 311 / annular stage 311a into four equal parts, forming two groups of two first blades 321 arranged in pairs. This reduces the number of movable pins 340 to two, helping to simplify the structure of the entire machine while ensuring the operating quality of the entire machine.

[0125] In this embodiment, the length of the movable pin 340 is longer than the diameter of the assembly section 311b to ensure that when the movable pin 340 is inserted into the movable hole 311d, at least one end of the movable pin 340 extends outward from the assembly section 311b and extends into the installation groove 311c. At the same time, when the relative first blade 321 is installed in the installation groove 311c, at least one first blade 321 extends outward from the annular step 311a, that is, the length of the two first blades 321 plus the movable pin 340 is greater than the diameter of the annular step 311a.

[0126] Furthermore, in one embodiment, a groove 311e is provided at one axial end of the main shaft 311 near each of the movable holes 311d, and the groove 311e is connected to each of the movable holes 311d. When, as described above, the main shaft 311 includes an annular stage 311a and two assembly segments 311b, the axial end of the assembly segment 311b of the two assembly segments 311b that is away from the extension shaft 312 is provided with the groove 311e. The provision of the groove 311e, on the one hand, facilitates the molding of each movable hole 311d, and on the other hand, facilitates the communication between each group of corresponding movable holes 311d when each blade is the first blade 321. In addition, the provision of the groove 311e also helps to visualize the installation of each movable pin 340 / linkage 330, facilitating disassembly, replacement, and daily maintenance.

[0127] Furthermore, when, as described above, the blades are arranged at equal intervals along the circumference of the shaft body 310 to form four blades that divide the main shaft 311 / annular stage 311a into four equal parts, forming two groups of two first blades 321 arranged in pairs, so that the number of movable pins 340 is reduced to two, the radial cross-section of each movable pin 340 can be semicircular, and when the two movable pins 340 are cross-stacked and installed, the flat surfaces of the two pins abut against each other. In this way, the stacking height of the two cross-stacked movable pins 340 is basically consistent with their own diameter, and there is no need to change the shape or size of each movable hole 311d, so that each movable hole 311d can be maintained as a circular hole, which helps to simplify the structure. In addition, the two movable pins 340 abut against each other through the flat surfaces, which is more conducive to smooth contact, reducing wear and difficulty in processing and assembly.

[0128] Preferably, each of the two movable pins 340 is formed by dividing a cylinder into two, and the diameter of the cylinder is consistent with the inner diameter of the movable hole 311d.

[0129] Furthermore, referring to FIG2 , in one embodiment, the vane pump 1 further includes a sealing cover 600 and a sealing member 700, wherein the sealing cover 600 is connected to the axial end of the main shaft 311 and is provided at the notch of the groove 311e; and the sealing member 700 is sandwiched between the axial end of the main shaft 311 and the sealing cover 600. The sealing cover 600 can movably cover the groove 311e to prevent the liquid in the mounting groove 311c from leaking out through the movable hole 311d and the groove 311e. The sealing member 700 can be specifically configured as an elastic sealing ring, such as a rubber sealing ring, or as a rigid sealing ring, which can ensure a tight connection between the sealing cover 600 and the axial end of the main shaft 311.

[0130] Referring to Figure 5 , in one embodiment, the blade has a first end 321a located within the mounting groove 311c and a second end 321b exposed outside the mounting groove 311c. The blade is configured to gradually narrow in width from the first end 321a to the second end 321b, at least in the portion proximal to the second end 321b. This minimizes the sliding contact between the blade and the inner wall of the annular cavity 202, reducing frictional damping therebetween. Furthermore, guide surfaces are formed on the circumferential surfaces of the first end 321a on both sides of the shaft 310. These guide surfaces are specifically inclined straight or curved surfaces, facilitating smooth flow of liquid.

[0131] In view of any of the above embodiments, the mounting hole 201 and the annular cavity 202 in the stator assembly 200 can be independently defined by a single component, which is generally cylindrical. Alternatively, referring to Figures 2, 6, and 7, in one embodiment, the stator assembly 200 includes two disc-shaped members 210 spaced apart along the first direction, and an annular member 220 connected between the two disc-shaped members 210. The two disc-shaped members 210 are provided with the mounting hole 201, and the two disc-shaped members 210 and the annular member 220 together define the annular cavity 202. The disc-shaped members 210 are generally disc-shaped or cylindrical blocks with a relatively small height. The cross-sectional shape of the two disc-shaped members 210 can be set to a perfect circle as shown in Figure 7. In this case, the central axis of the disc-shaped member 210 is substantially collinear with the rotation axis of the shaft 310, so that the axial, radial, circumferential, and tangential directions of the disc-shaped member 210 at corresponding positions are substantially aligned with those of the shaft 310. The annular member 220 is a generally annular block. When the main shaft 311 includes the annular step 311a and the two assembly segments 311b, as described above, the two disc-shaped members 210 are assembled with the two assembly segments 311b. The annular member 220 surrounds the annular step 311a and maintains a certain distance from the outer sidewall of the annular step 311a to define a fluid space of the desired volume.

[0132] In view of the above, to achieve the variable radial width of the fluid space, the rotor's annular step 311a can be configured as an eccentric wheel, i.e., the center axis of the annular step 311a is offset from the rotational axis of the main shaft 311. Alternatively, the inner diameter of the annular cavity 202 can be configured to vary along its circumference. Specifically, as shown in FIG6 , in one embodiment, the inner diameter of the annular member 220 varies along its circumference. The annular member 220 has a wide portion and a narrow portion, and the width of the connecting portion between the wide portion and the narrow portion uniformly increases or decreases, resulting in a uniform variation in the inner diameter of the annular member 220. The outer contour of the annular member 220 is eccentric to the inner contour, resulting in a wall thickness of the annular member 220 that is thicker at one end and thinner at the other. The contact angle a between the outer wall of the annular step 311a and the inner wall of the annular member 220 is generally set to be greater than 45 degrees and less than 100 degrees.

[0133] Based on this, in one embodiment, referring to Figure 2 and Figure 7 , the two disc-shaped members 210 have disc end surfaces 211 adjacent to each other, and the disc end surfaces 211 are recessed to form at least one recessed portion 212, which is respectively connected to the liquid inlet 111 and the liquid outlet 112. There can be one or more recessed portions 212. When there are multiple recessed portions 212, the arrangement of the recessed portions 212 on the disc end surface 211 is not limited. For example, as shown in Figure 7 , when there are two recessed portions 212, the two recessed portions 212 can be located on opposite sides of the disc-shaped member 210 in a radial direction.

[0134] Furthermore, when there are multiple recessed portions 212, different recessed portions 212 may be independently connected to the liquid inlet hole 111 and the liquid outlet hole 112, or the same recessed portion 212 may be simultaneously connected to the liquid inlet hole 111 and the liquid outlet hole 112. When the same recessed portion 212 is simultaneously connected to the liquid inlet hole 111 and the liquid outlet hole 112, a blade rotating between the liquid inlet hole 111 and the liquid outlet hole 112 may be used to separate the recessed portion 212 into two independent chambers.

[0135] The recessed portion 212 can be arranged in an arc shape extending along the circumference of the disc-shaped member 210. At this time, the recessed portion 212 has two opposite side walls located on the circumference of the disc-shaped member 210. The wall surfaces can be set as inclined straight surfaces or concave arc surfaces, which are conducive to the stable flow of liquid.

[0136] In one embodiment, the outer peripheral sidewalls of the two disk-shaped members 210 and the annular member 220 are provided with axially defined anti-rotation grooves 230 at corresponding locations. The stator assembly 200 further includes anti-rotation pins 240, which are sequentially installed through the anti-rotation grooves 230 of each of the disk-shaped members 210 and the annular member 220. The anti-rotation pins 240 are sequentially installed through the anti-rotation grooves 230 to effectively prevent the rotation of each of the disk-shaped members 210 and the annular member 220, ultimately helping to ensure the stable installation of the rotor assembly 300 and the stator assembly 200.

[0137] In addition, referring to FIG. 12 , the present invention further provides an assembly method of the vane pump 1 , and mainly refers to an assembly method of the rotor assembly 300 and the stator assembly 200 , which specifically includes the following steps:

[0138] Step S100: providing a shaft 310, a plurality of blades and a linkage 330, and sequentially mounting the blades on the shaft 310, wherein the first blades 321 arranged in pairs are mounted on the shaft 310 via the linkage 330;

[0139] Step S200: providing a disk-shaped member 210 as a first disk-shaped member, sleeve-fitting the mounting hole 201 of the first disk-shaped member onto the outer side of a section of the shaft 310, and stopping the disk end surface 211 of the first disk-shaped member on one axial side of each blade;

[0140] Step S300: providing an annular member 220, and sleeve-fitting the annular member 220 onto the radially outer sides of each blade;

[0141] Step S400: providing another disk-shaped member 210 as a second disk-shaped member, sleeve the mounting hole 201 of the second disk-shaped member onto the outer side of the other section of the shaft 310, and stop the disk end surface 211 of the second disk-shaped member at the other axial side of each blade;

[0142] Step S500: Aligning the first disc-shaped member, the annular member 220 and the anti-rotation groove 230 of the second disc-shaped member;

[0143] Step S600: providing a locking pin 240, and sequentially passing the locking pin 240 through the locking grooves 230 of the first disk-shaped member, the annular member 220, and the second disk-shaped member.

[0144] In this embodiment, the shaft body 310, the plurality of blades and the linkage 330 can be pre-assembled into a whole. Specifically, when some of the plurality of blades are first blades 321, the first blades 321 arranged in pairs are mounted on the shaft body 310 through the linkage 330, and the remaining blades can be mounted on the shaft body 310 directly or indirectly through the mounting structure. For example, when, as described above: the shaft body 310 is provided with a mounting groove 311c, and the mounting groove 311c is provided with a movable hole 311d, the blades are mounted on the corresponding mounting holes 201 through the movable pin 340. More specifically, when the number of blades is set to four, and each blade is a first blade 321, after the two linkages 330 are inserted into the corresponding movable holes 311d, each first blade 321 is connected to the protruding end of the linkage 330 in the mounting groove 311c.

[0145] When the first disc is mounted on a section of the shaft 310, specifically, on an assembly section 311b of the shaft 310, the axial displacement of each blade on the side of the first disc is stopped and limited. When the annular member 220 is mounted on the radially outer side of each blade, the radial displacement of each blade is stopped and limited. When the second disc is mounted on another section of the shaft 310, specifically, on another assembly section 311b of the shaft 310, the axial displacement of each blade on the side of the second disc is stopped and limited. In this way, the first disc, annular member 220, and second disc can limit the axial and radial displacement degrees of freedom of the rotor assembly 300 without hindering the rotational movement of the rotor in the rotor assembly 300.

[0146] Next, by operating the positions of the anti-rotation grooves 230 of the first disk-shaped member, the annular member 220 and the second disk-shaped member, the anti-rotation grooves 230 are aligned and connected along the axial direction, and the anti-rotation pins 240 are operated and installed in each anti-rotation groove 230 in turn, which can effectively stop and limit the rotation between the first disk-shaped member, the annular member 220 and the second disk-shaped member, and ultimately help ensure the stable installation of the rotor assembly 300 and the stator assembly 200.

[0147] In the following embodiments, the polyetheretherketone material is purchased from outside and has a density of 1.32 g / cm2; the average diameter of the graphene nanosheets is 8 μm and the average thickness is 10 nm; the average particle size of the titanium nitride powder is 200 nm; and the concentration of the ammonia solution is 20 wt%. Example 1

[0148] A method for preparing a wear-resistant self-lubricating resin material comprises the following steps:

[0149] S1: 0.5 g of titanium nitride powder and 3 ml of ammonia water were added to 50 ml of ethanol solution, and 2 ml of tetrabutyl titanate was added while stirring. After the addition was completed, the mixture was stirred and reacted at room temperature for 60 minutes. After the reaction was completed, the reaction solution was filtered, the precipitate was washed, and then dried to obtain a titanium nitride / titanium oxide composite material;

[0150] S2: In parts by weight, 55 parts of polyetheretherketone resin, 5 parts of the titanium nitride / titanium oxide composite material obtained in step S1, 4 parts of graphene nanosheets, 0.2 parts of pentaerythritol stearate, and 0.2 parts of γ-glycidyloxypropyltrimethoxysilane are melt-blended and extruded and granulated using a twin-screw extruder to obtain a wear-resistant self-lubricating resin material; during extrusion granulation, the rear section temperature of the twin-screw extruder is 330°C, the middle section temperature is 365°C, the front section temperature is 380°C, the screw aspect ratio is 20, and the screw speed is 500r / min. Example 2

[0151] A method for preparing a wear-resistant self-lubricating resin material comprises the following steps:

[0152] S1: 0.8 g of titanium nitride powder and 3 ml of ammonia water were added to 50 ml of ethanol solution, and 2 ml of tetrabutyl titanate was added while stirring. After the addition was completed, the mixture was stirred and reacted at room temperature for 60 minutes. After the reaction was completed, the reaction solution was filtered, the precipitate was washed, and then dried to obtain a titanium nitride / titanium oxide composite material;

[0153] S2: In parts by weight, 55 parts of polyetheretherketone resin, 5 parts of the titanium nitride / titanium oxide composite material obtained in step S1, 4 parts of graphene nanosheets, 0.2 parts of pentaerythritol stearate, and 0.2 parts of γ-glycidyloxypropyltrimethoxysilane are melt-blended and extruded and granulated using a twin-screw extruder to obtain a wear-resistant self-lubricating resin material; during extrusion granulation, the rear section temperature of the twin-screw extruder is 330°C, the middle section temperature is 365°C, the front section temperature is 380°C, the screw aspect ratio is 20, and the screw speed is 500r / min. Example 3

[0154] A method for preparing a wear-resistant self-lubricating resin material comprises the following steps:

[0155] S1: 0.5 g of titanium nitride powder and 5 ml of ammonia water were added to 50 ml of ethanol solution, and 2 ml of tetrabutyl titanate was added while stirring. After the addition was completed, the reaction was continued with stirring at room temperature for 60 minutes. After the reaction was completed, the reaction solution was filtered, the precipitate was washed, and then dried to obtain a titanium nitride / titanium oxide composite material;

[0156] S2: In parts by weight, 55 parts of polyetheretherketone resin, 5 parts of the titanium nitride / titanium oxide composite material obtained in step S1, 4 parts of graphene nanosheets, 0.2 parts of pentaerythritol stearate, and 0.2 parts of γ-glycidyloxypropyltrimethoxysilane are melt-blended and extruded and granulated using a twin-screw extruder to obtain a wear-resistant self-lubricating resin material; during extrusion granulation, the rear section temperature of the twin-screw extruder is 330°C, the middle section temperature is 365°C, the front section temperature is 380°C, the screw aspect ratio is 20, and the screw speed is 500r / min. Example 4

[0157] A method for preparing a wear-resistant self-lubricating resin material comprises the following steps:

[0158] S1: 0.5 g of titanium nitride powder and 3 ml of ammonia water were added to 50 ml of ethanol solution, and 2 ml of tetrabutyl titanate was added while stirring. After the addition was completed, the mixture was stirred and reacted at room temperature for 60 minutes. After the reaction was completed, the reaction solution was filtered, the precipitate was washed, and then dried to obtain a titanium nitride / titanium oxide composite material;

[0159] S2: In parts by weight, 55 parts of polyetheretherketone resin, 8 parts of the titanium nitride / titanium oxide composite material obtained in step S1, 4 parts of graphene nanosheets, 0.2 parts of pentaerythritol stearate, and 0.2 parts of γ-glycidyloxypropyltrimethoxysilane are melt-blended and extruded and granulated using a twin-screw extruder to obtain a wear-resistant self-lubricating resin material; during extrusion granulation, the rear section temperature of the twin-screw extruder is 330°C, the middle section temperature is 365°C, the front section temperature is 380°C, the screw aspect ratio is 20, and the screw speed is 500r / min. Example 5

[0160] A method for preparing a wear-resistant self-lubricating resin material comprises the following steps:

[0161] S1: 0.5 g of titanium nitride powder and 3 ml of ammonia water were added to 50 ml of ethanol solution, and 2 ml of tetrabutyl titanate was added while stirring. After the addition was completed, the mixture was stirred and reacted at room temperature for 60 minutes. After the reaction was completed, the reaction solution was filtered, the precipitate was washed, and then dried to obtain a titanium nitride / titanium oxide composite material;

[0162] S2: In parts by weight, 55 parts of polyetheretherketone resin, 5 parts of the titanium nitride / titanium oxide composite material obtained in step S1, 8 parts of graphene nanosheets, 0.2 parts of pentaerythritol stearate, and 0.2 parts of γ-glycidyloxypropyltrimethoxysilane are melt-blended and extruded and granulated using a twin-screw extruder to obtain a wear-resistant self-lubricating resin material; during extrusion granulation, the rear section temperature of the twin-screw extruder is 330°C, the middle section temperature is 365°C, the front section temperature is 380°C, the screw aspect ratio is 20, and the screw speed is 500r / min.

[0163] Comparative Example 1

[0164] Compared with Example 5, the addition amount of the titanium nitride / titanium oxide composite material is 20 parts, and other conditions are the same as those in Example 5.

[0165] Comparative Example 2

[0166] Compared with Example 5, the addition amount of graphene nanosheets is 20 parts, and other conditions are the same as those in Example 5.

[0167] The performance of the wear-resistant self-lubricating resin material prepared above was tested below. Specifically, the wear-resistant self-lubricating resin materials prepared in Examples 1-5 and Comparative Examples 1-2 were injection molded to obtain splines. The injection molding conditions were: barrel temperature 360°C, injection pressure 800 MPa, holding time 3 min, cooling time 2S, and the injection-molded splines were heat treated at a constant temperature of 200°C for 4 h and naturally cooled to room temperature.

[0168] During the test, a universal testing machine was used to test the mechanical properties of the specimens according to ASTM standards (23±1°C); the test conditions for friction performance were: load 100 kg, linear speed 200 rpm, and test time continuous 1 hour.

[0169] The test results are shown in Table 1.

[0170] Table 1

[0171]

[0172] It can be seen from the above test results that, compared with the comparative example, the material prepared by the present invention has higher strength and better wear resistance.

[0173] It can also be seen from the test data in Table 1 that, in Example 2, the amount of titanium nitride added is slightly increased relative to Example 1, and the tensile strength, bending strength and friction performance of the obtained material are all improved to a certain extent; this is mainly because titanium nitride itself has high strength and hardness, which can improve the overall performance of the composite material. In addition, titanium nitride can increase the surface hardness of the material, thereby reducing its friction coefficient. In Example 3, the amount of ammonia water used is increased relative to Example 1, and the mechanical properties and friction performance of the material are improved; this is mainly because with the increase in the amount of ammonia water used, the concentration of hydroxide ions and ammonium ions in the reaction system increases, and the pH of the reaction system increases, which accelerates the hydrolysis rate of tetrabutyl titanate, promotes the coating of titanium dioxide on the surface of titanium nitride, and thereby increases the thickness of the titanium dioxide shell on the surface of titanium nitride; the titanium dioxide shell, as an easily bonded shell material, greatly improves the bonding performance between the inorganic material and the organic material, and also improves the performance of the composite material to a certain extent.

[0174] It can be seen from Comparative Example 1, Comparative Example 2 and Example 1 that although a large amount of titanium nitride / titanium oxide composite materials and graphene nanosheets were added in Comparative Example 1 and Comparative Example 2, the tensile strength and flexural strength of the materials decreased. This is mainly because the large amount of inorganic materials added made it difficult to disperse well in the organic matrix and easily agglomerated.

[0175] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vane pump, characterized in that: include: A pump housing is formed with a mounting cavity, wherein the mounting cavity is provided with a liquid inlet hole and a liquid outlet hole; A stator assembly is disposed in the pump housing, wherein the stator assembly is provided with a mounting hole along a first direction, and an annular cavity is concavely disposed around the periphery of the mounting hole, and the annular cavity is communicated with the mounting hole; and, The rotor assembly and the stator assembly together define a fluid space in the annular cavity, the fluid space is respectively connected to the liquid inlet and the liquid outlet, the radial width of the fluid space is variable, the rotor assembly includes a shaft body, a plurality of blades and a linkage, the shaft body extends along the first direction and is rotatably mounted on the mounting hole around its own central axis, each of the blades is movably mounted on the side wall of the shaft body along the radial direction of the shaft body, each of the blades includes two first blades arranged in pairs, the two first blades arranged in pairs are symmetrical about the central axis of the shaft body, and the linkage is linked to each of the first blades arranged in pairs.

2. The vane pump according to claim 1, characterized in that The shaft body comprises a main shaft, a side wall of the main shaft is provided with a plurality of installation grooves spaced apart along its circumference, a movable hole is provided at the bottom of each installation groove, and each blade is movably installed in the installation groove; The rotor assembly further includes a plurality of movable pins, each of which is movably disposed in a corresponding movable hole along the radial direction of the shaft body and connected to a corresponding blade; Wherein, the two movable holes corresponding to the two first blades arranged in pairs are connected, and the corresponding two movable pins are connected to form the linkage member.

3. The vane pump according to claim 2, characterized in that: The blade has a first end located in the installation groove and a second end exposed outside the installation groove. In the direction from the first end to the second end, at least a portion of the blade close to the second end is gradually narrowed in width.

4. The vane pump according to claim 2, characterized in that: A groove is formed at one end of the main shaft close to each of the movable holes, and the groove is communicated with each of the movable holes.

5. The vane pump according to claim 1, characterized in that: The blades are arranged in even number at equal intervals along the circumference of the shaft body, so that each of the blades is the first blade.

6. The vane pump according to claim 1, characterized in that: The shaft body comprises a main shaft and an extension shaft integrally formed along its axial direction, each of the blades is arranged on the main shaft, and the extension shaft extends toward the opening direction of the mounting hole; The vane pump further includes a driver having a rotary output shaft detachably connected to the extension shaft.

7. The vane pump according to claim 1, characterized in that: The stator assembly comprises two disc-shaped members arranged at intervals along the first direction, and an annular member connected between the two disc-shaped members, the two disc-shaped members are provided with the mounting holes, and the two disc-shaped members and the annular member jointly define the annular cavity; The inner diameter of the annular member varies along its circumference. The two disc-shaped members have disc end surfaces close to each other. The disc end surfaces are concave to form at least one concave portion, and the concave portion is respectively connected to the liquid inlet and the liquid outlet.

8. The vane pump according to claim 7, characterized in that: The outer peripheral side walls of the two disk-shaped members and the annular member are provided with anti-rotation grooves in the axial direction at corresponding positions; The stator assembly also includes a stop pin, which is sequentially penetrated and installed in the stop grooves of each of the disc-shaped member and the annular member.

9. The vane pump according to claim 1, characterized in that: The installation cavity penetrates the pump housing along the first direction to form two openings, and the liquid inlet hole and the liquid outlet hole are arranged on the sides of the openings; The vane pump further comprises two end covers, and the two end covers are detachably covered on the two openings respectively.

10. The vane pump according to claim 4, characterized in that The vane pump also includes: A sealing cover connected to the shaft end of the main shaft and arranged at the notch of the groove; and A sealing member is sandwiched between the shaft end of the main shaft and the sealing cover.

11. The vane pump according to claim 1, characterized in that: The liquid inlet and the liquid outlet are arranged at intervals and extend side by side in the same direction. The pump housing is provided with a bypass channel between the liquid inlet and the liquid outlet, and the bypass channel communicates and connects the liquid inlet and the liquid outlet; The vane pump further comprises an opening and closing member, which is movably arranged in the bypass channel to adjust the conduction and cutoff of the bypass channel.

12. A method for assembling a vane pump as claimed in claim 8, characterized in that: include: Provide a shaft body, a plurality of blades and a linkage member, and sequentially mount the blades on the shaft body, wherein the first blades arranged in pairs are mounted on the shaft body through the linkage member; A disk-shaped member is provided as a first disk-shaped member, a mounting hole of the first disk-shaped member is sleeved on the outer side of a section of the shaft body, and a disk end surface of the first disk-shaped member is stopped and limited on one axial side of each of the blades; Providing an annular member, and sleeve-engaging the annular member on the radial outer side of each of the blades; Providing another disk-shaped member as a second disk-shaped member, sleeve the mounting hole of the second disk-shaped member on the outer side of the other section of the shaft body, and stop the disk end surface of the second disk-shaped member at the other axial side of each blade; Align the anti-rotation grooves of the first disk-shaped member, the annular member, and the second disk-shaped member; A stop pin is provided, and the stop pin is sequentially installed through the stop grooves of the first disk-shaped member, the annular member and the second disk-shaped member.

13. A rotor, characterized in that: The rotating shaft comprises a rotating shaft, wherein the side wall of the rotating shaft at least at a local shaft section thereof is provided with a plurality of blade grooves spaced apart along the circumference thereof, and a mounting hole is provided at the bottom of each blade groove; Wherein, at least two of the blade grooves are symmetrical about the central axis of the rotating shaft, and the corresponding mounting holes are connected.

14. The rotor according to claim 13, characterized in that The number of the blade slots is an even number, and the blade slots are arranged at equal intervals along the circumference of the rotating shaft.

15. The rotor according to claim 14, characterized in that The number of blade slots is four.

16. The rotor according to claim 13, characterized in that The rotating shaft comprises a first shaft body and a second shaft body which are sequentially connected along the axial direction, each of the blade grooves is arranged on the first shaft body, and the second shaft body is used to connect with a driver.

17. The rotor according to claim 16, characterized in that The first shaft body includes a laterally protruding step shaft section and an assembly shaft section arranged on both axial sides of the step shaft section. Each of the blade grooves is opened on the side wall of the step shaft section, and the bottom surface of each of the blade grooves is not higher than the radial side surface of the assembly shaft section.

18. The rotor according to claim 17, characterized in that A groove is formed at the shaft end of the assembly shaft section away from the second shaft body, and the mounting holes are connected through the groove.

19. The rotor according to claim 16, characterized in that The first shaft body and the second shaft body are integrally formed.

20. The rotor according to claim 16, characterized in that A connecting portion is provided at the shaft end of the second shaft body, and the connecting portion is used for adapting and connecting with a docking portion provided on the output shaft of the driver.

21. A rotor module, characterized in that: include: A rotor as claimed in any one of claims 13 to 20; A plurality of blades are arranged in one-to-one correspondence with the plurality of blade slots, and the blades are slidably mounted in the blade slots along the radial direction of the rotating shaft; as well as, A plurality of pin bodies are movably mounted at each mounting hole along the radial direction of the rotating shaft and connected to the corresponding blades, wherein two pin bodies corresponding to two symmetrically arranged blade slots are linked and connected to form a connecting piece.

22. A vane pump, characterized in that: Comprising a rotor module as claimed in claim 21.

23. A vane pump, characterized in that: The invention comprises a rotor assembly, wherein the rotor assembly comprises a shaft body, a plurality of blades and a linkage member, wherein the shaft body is extended and arranged along a first direction and is rotatable around its own central axis, each of the blades is movably mounted on a side wall of the shaft body along a radial direction of the shaft body, each of the blades comprises two first blades arranged in pairs, the two first blades arranged in pairs are symmetrical about the central axis of the shaft body, and the linkage member is linked and connected with each of the first blades arranged in pairs; Wherein, the linkage member is configured as a rigid structure.

24. The vane pump according to claim 23, characterized in that The vane pump also includes a stator assembly, which is provided with a mounting hole along the first direction, and an annular cavity is recessed around the outer periphery of the mounting hole, and the annular cavity is communicated with the mounting hole; the rotor assembly and the stator assembly jointly define a fluid space in the annular cavity, the radial width of the fluid space is set to be variable, and the shaft body is rotatably mounted on the mounting hole.

25. The vane pump according to claim 24, characterized in that When one of the first blades connected to the linkage member slides against the inner cavity wall on one side of the annular cavity, another of the first blades connected thereto may be arranged to slide against the inner cavity wall on the other side of the annular cavity.

26. The vane pump according to claim 24, characterized in that When one of the first blades connected to the linkage member is in sliding contact with the inner cavity wall on one side of the annular cavity, the other first blade connected thereto may be arranged to reserve a preset interval with the inner cavity wall on the other side of the annular cavity.

27. The vane pump according to claim 23, characterized in that The shaft body includes a main shaft, and the side wall of the main shaft is provided with a plurality of mounting grooves spaced apart along its circumference, and a movable hole is provided at the bottom of each mounting groove, and each blade is movably mounted in the mounting groove; the rotor assembly also includes a plurality of movable pins, each of which is movably arranged in the radial direction of the shaft body through the corresponding movable hole and connected to the corresponding blade; the two movable holes corresponding to the two first blades arranged in pairs are connected, and the corresponding two movable pins are connected to form the linkage member.

28. The vane pump according to claim 27, characterized in that A groove is formed at one end of the main shaft close to each of the movable holes, and the groove is communicated with each of the movable holes.

29. The vane pump according to claim 27, characterized in that Each of the blades is the first blade.

30. The vane pump according to claim 27, characterized in that The blades are arranged in four numbers at equal intervals along the circumference of the shaft body, so that each of the blades is the first blade, and the movable pins are arranged in two numbers.

31. The vane pump according to claim 27, characterized in that The radial cross-section of each movable pin is semicircular, and when two movable pins are cross-stacked and installed, their flat surfaces abut against each other.

32. The vane pump according to claim 31, characterized in that Each of the two movable pins is formed by dividing a cylinder into two, and the diameter of the cylinder is consistent with the inner diameter of the movable hole.

33. The vane pump according to claim 23, characterized in that The blade has a first end located in the installation groove and a second end exposed outside the installation groove. In the direction from the first end to the second end, at least a portion of the blade close to the second end is gradually narrowed in width.

34. The vane pump according to claim 24, characterized in that The vane pump also includes a pump housing, which forms a mounting cavity, and the mounting cavity is provided with a liquid inlet hole and a liquid outlet hole; the stator assembly includes two disc-shaped members arranged at intervals along the first direction, and an annular member connected between the two disc-shaped members, the two disc-shaped members are penetrated by the mounting holes, and the two disc-shaped members and the annular member jointly define the annular cavity; the inner diameter of the annular member is arranged to vary along its circumference, and the two disc-shaped members have disc end surfaces close to each other, and the disc end surfaces are recessed to form at least one recessed portion, and the recessed portion is respectively connected to the liquid inlet hole and the liquid outlet hole.

35. The vane pump according to claim 34, characterized in that The outer peripheral side walls of the two disk-shaped parts and the annular part are provided with anti-rotation grooves in the axial direction at corresponding positions; the stator assembly also includes a anti-rotation pin, which is sequentially penetrated and installed in the anti-rotation grooves of each of the disk-shaped parts and the annular part.

36. A vane pump, characterized in that: include: A pump housing is formed with an installation cavity, the installation cavity is provided with a liquid inlet hole and a liquid outlet hole, the liquid inlet hole and the liquid outlet hole are arranged at intervals, the pump housing is provided with a bypass channel between the liquid inlet hole and the liquid outlet hole, the bypass channel communicates and connects the liquid inlet hole and the liquid outlet hole; An opening and closing member, the opening and closing member is movably arranged in the bypass channel to adjust the conduction and cutoff of the bypass channel; as well as, A filtering structure is arranged at the liquid inlet, the liquid outlet and / or the bypass channel.

37. The vane pump according to claim 36, characterized in that The liquid inlet hole and the liquid outlet hole extend side by side in the same direction.

38. The vane pump according to claim 36, characterized in that The filtering structure is arranged at the liquid inlet.

39. The vane pump according to claim 36, characterized in that The opening and closing member is used to open the bypass channel when the pressure of the liquid outlet exceeds a preset threshold, and to block the bypass channel when the pressure of the liquid outlet does not exceed the preset threshold.

40. The vane pump according to any one of claims 36 to 39, characterized in that The vane pump also includes: a stator assembly, which is arranged in the pump housing, the stator assembly is provided with a mounting hole along a first direction, and an annular cavity is recessed around the periphery of the mounting hole, the annular cavity is connected with the mounting hole; and a rotor assembly, which together with the stator assembly defines a fluid space in the annular cavity, the fluid space is respectively connected with the liquid inlet and the liquid outlet, and the radial width of the fluid space is set to be variable. The rotor assembly includes a shaft body, a plurality of blades and a linkage part. The shaft body extends and is arranged along the first direction, and is rotatably mounted on the mounting hole around its own central axis. Each of the blades is movably mounted on the side wall of the shaft body along the radial direction of the shaft body. Each of the blades includes two first blades arranged in a pair, and the two first blades arranged in a pair are symmetrical about the central axis of the shaft body. The linkage part is linked to each of the first blades arranged in a pair.

41. The vane pump according to claim 40, characterized in that The shaft body includes a main shaft, and the side wall of the main shaft is provided with a plurality of mounting grooves spaced apart along its circumference, and a movable hole is provided at the bottom of each mounting groove, and each blade is movably mounted in the mounting groove; the rotor assembly also includes a plurality of movable pins, each of which is movably arranged in the radial direction of the shaft body through the corresponding movable hole and connected to the corresponding blade; the two movable holes corresponding to the two first blades arranged in pairs are connected, and the corresponding two movable pins are connected to form the linkage member.

42. The vane pump according to claim 41, characterized in that The blades are arranged in four numbers at equal intervals along the circumference of the shaft body, so that each of the blades is the first blade, and the movable pins are arranged in two numbers.

43. The vane pump according to claim 41, characterized in that The radial cross-section of each movable pin is semicircular, and when two movable pins are cross-stacked and installed, their flat surfaces abut against each other.

44. The vane pump according to claim 41, characterized in that A groove is formed at one end of the main shaft close to each of the movable holes, and the groove is communicated with each of the movable holes.

45. The vane pump according to claim 44, characterized in that The vane pump further includes: a sealing cover connected to the shaft end of the main shaft and disposed at the notch of the groove; and a sealing member sandwiched between the shaft end of the main shaft and the sealing cover.

46. ​​The vane pump according to claim 40, characterized in that The stator assembly includes two disc-shaped members arranged at intervals along the first direction, and an annular member connected between the two disc-shaped members, the two disc-shaped members are penetrated by the mounting holes, and the two disc-shaped members and the annular member jointly define the annular cavity; the inner diameter of the annular member is varied along its circumference, the two disc-shaped members have disc end surfaces close to each other, the disc end surfaces are recessed to form at least one recessed portion, and the recessed portion is respectively connected to the liquid inlet and the liquid outlet.

47. The vane pump according to claim 46, characterized in that The outer peripheral side walls of the two disk-shaped parts and the annular part are provided with anti-rotation grooves in the axial direction at corresponding positions; the stator assembly also includes a anti-rotation pin, which is sequentially penetrated and installed in the anti-rotation grooves of each of the disk-shaped parts and the annular part.

48. The vane pump according to claim 40, characterized in that The installation cavity penetrates the pump housing along the first direction to form two openings, and the liquid inlet and the liquid outlet are arranged beside the openings; the vane pump also includes two end covers, and the two end covers are detachably covered on the two openings respectively.

49. A vane pump, characterized in that: include: A stator assembly, comprising two disc-shaped members arranged at intervals along a first direction, and an annular member connected between the two disc-shaped members, wherein the stator assembly is provided with a mounting hole along the first direction, and the two disc-shaped members and the annular member jointly define an annular cavity surrounding the periphery of the mounting hole and communicating with the mounting hole; as well as, A rotor assembly, together with the stator assembly, defines a fluid space in the annular cavity, wherein the radial width of the fluid space is variable, wherein the rotor assembly comprises a shaft body, wherein the shaft body is extended along the first direction and is rotatably mounted on the mounting hole around its central axis, wherein the shaft body comprises a main shaft, wherein the main shaft comprises a laterally protruding annular stage, and assembly sections are arranged on both axial sides of the annular stage; Wherein, the contact angle between the outer wall of the annular stage and the inner wall of the annular member is a, and a is set to be greater than 45 degrees and less than 100 degrees.

50. The vane pump according to claim 49, characterized in that The rotor assembly also includes a plurality of blades and linkage parts. Each of the blades is movably mounted on the side wall of the shaft body along the radial direction of the shaft body. Each of the blades includes two first blades arranged in pairs. The two first blades arranged in pairs are symmetrical about the central axis of the shaft body. The linkage part is linkage-connected with each of the first blades arranged in pairs.

51. The vane pump according to claim 50, characterized in that The side wall of the main shaft is provided with a plurality of mounting grooves spaced apart along its circumference, a movable hole is provided at the bottom of each mounting groove, and each blade is movably mounted in the mounting groove; the rotor assembly also includes a plurality of movable pins, each of which is movably arranged in the radial direction of the shaft body through the corresponding movable hole and connected to the corresponding blade; the two movable holes corresponding to the two first blades arranged in pairs are connected, and the corresponding two movable pins are connected to form the linkage member.

52. The vane pump according to claim 51, characterized in that The side wall of the annular stage is provided with a plurality of the installation grooves spaced apart along its circumference, and the bottom surface of each installation groove is not higher than the radial side surface of the assembly section.

53. The vane pump according to claim 51, characterized in that The blades are arranged in four numbers at equal intervals along the circumference of the shaft body, so that each of the blades is the first blade, and the movable pins are arranged in two numbers.

54. The vane pump according to claim 51, characterized in that The radial cross-section of each movable pin is semicircular, and when two movable pins are cross-stacked and installed, their flat surfaces abut against each other.

55. The vane pump according to claim 51, characterized in that A groove is formed at one end of the main shaft close to each of the movable holes, and the groove is communicated with each of the movable holes.

56. The vane pump according to claim 49, characterized in that The shaft body includes a main shaft and an extension shaft integrally formed along its axial direction, each of the blades is arranged on the main shaft, and the extension shaft extends toward the opening direction of the mounting hole; the vane pump also includes a driver, the driver has a rotating output shaft, and the rotating output shaft is detachably connected to the extension shaft.

57. The vane pump according to any one of claims 49 to 56, characterized in that The vane pump also includes a pump housing, which forms an installation cavity, and the installation cavity is provided with a liquid inlet hole and a liquid outlet hole; the inner diameter of the annular member is arranged to vary along its circumference, and the two disc-shaped members have disc end surfaces close to each other, and the disc end surfaces are recessed to form at least one recessed portion, and the recessed portion is respectively connected to the liquid inlet hole and the liquid outlet hole.

58. The vane pump according to claim 57, characterized in that A plurality of recessed portions are arranged at intervals on the end surface of the disk.

59. The vane pump according to claim 57, characterized in that The recessed portion is arranged to extend in an arc shape along the circumference of the disc-shaped component.

60. The vane pump according to claim 57, characterized in that The outer peripheral side walls of the two disk-shaped parts and the annular part are provided with anti-rotation grooves in the axial direction at corresponding positions; the stator assembly also includes a anti-rotation pin, which is sequentially penetrated and installed in the anti-rotation grooves of each of the disk-shaped parts and the annular part.

61. A method for assembling a vane pump, characterized in that: include: A shaft body is provided, the shaft body comprising a main shaft, a side wall of the main shaft is provided with a plurality of installation grooves spaced apart along the circumference thereof, a movable hole is provided at the bottom of each installation groove, the movable holes are arranged in pairs, and the two movable holes arranged in pairs are symmetrical about the central axis of the shaft body; A plurality of movable pins are provided, and each movable pin is sequentially inserted into each movable hole, and two movable holes arranged in pairs are used for the same movable pin to be inserted; as well as, A plurality of first blades are provided, and each of the first blades is installed at each of the installation slots and connected to the protruding end of the movable pin in the installation slot.

62. The method for assembling a vane pump according to claim 61, characterized in that: The number of the first blades is four and is equidistantly spaced along the circumference of the shaft body, and the number of the movable pins is two.

63. The method for assembling a vane pump according to claim 62, characterized in that: The radial cross-section shape of each movable pin is semicircular.

64. The method for assembling a vane pump according to claim 63, characterized in that: Each of the two movable pins is formed by dividing a cylinder into two, and the diameter of the cylinder is consistent with the inner diameter of the movable hole.

65. The method for assembling a vane pump according to claim 63, characterized in that: The step of providing a plurality of movable pins, inserting each of the movable pins in turn into each of the movable holes, and providing two movable holes arranged in pairs for the same movable pin to pass through includes: providing two movable pins, inserting the two movable pins into two groups of movable holes arranged in pairs, respectively, and the two movable pins are cross-stacked with each other, and the flat surfaces of the two movable pins abut against each other.

66. The method for assembling a vane pump according to claim 61, characterized in that: The movable pin is configured as a rigid structure.

67. The method for assembling a vane pump according to claim 61, characterized in that: A groove is formed at one end of the main shaft close to each of the movable holes, and the groove is communicated with each of the movable holes.

68. The method for assembling a vane pump according to claim 67, characterized in that: The first vane pump further includes: a sealing cover connected to the shaft end of the main shaft and disposed at the notch of the groove; and a sealing member sandwiched between the shaft end of the main shaft and the sealing cover.

69. The method for assembling a vane pump according to claim 61, characterized in that: The first blade has a first end located in the installation groove and a second end exposed outside the installation groove. In the direction from the first end to the second end, at least a portion of the first blade close to the second end is gradually narrowed in width.

70. The method for assembling a vane pump according to any one of claims 61 to 69, characterized in that: After the step of providing a plurality of first blades, installing each of the first blades at each of the mounting grooves, and connecting with the protruding end of the movable pin in the mounting groove, the method further includes: providing a disk-shaped member as the first disk-shaped member, sleeve the mounting hole of the first disk-shaped member on the outer side of a section of the shaft body, and limit the disk end surface of the first disk-shaped member to one axial side of each of the first blades; providing an annular member, sleeve the annular member on the radial outer side of each of the first blades; providing another disk-shaped member as the second disk-shaped member, sleeve the mounting hole of the second disk-shaped member on the outer side of another section of the shaft body, and limit the disk end surface of the second disk-shaped member to the other axial side of each of the first blades; aligning the anti-rotation grooves of the first disk-shaped member, the annular member and the second disk-shaped member; and providing a anti-rotation pin, and sequentially passing the anti-rotation pin through and installing it in the anti-rotation grooves of the first disk-shaped member, the annular member and the second disk-shaped member.

71. A vane pump, characterized in that: It includes a rotor assembly, which includes a shaft body, a plurality of blades and a movable pin. The shaft body extends and is arranged along a first direction, and is rotatably installed in the mounting hole around its own central axis. Each of the blades is movably installed on the side wall of the shaft body along the radial direction of the shaft body. Each of the blades includes two first blades arranged in a pair, and the two first blades arranged in a pair are symmetrical about the central axis of the shaft body. The movable pin is linked and connected with each of the first blades arranged in a pair; wherein, the shaft body includes a main shaft, and the side wall of the main shaft is provided with a plurality of mounting grooves spaced along its circumference, and a movable hole is provided at the bottom of each of the mounting grooves, and each of the blades is movably installed in the mounting groove, and each of the movable pins is movably penetrated in the corresponding movable hole along the radial direction of the shaft body and is connected to the corresponding blade; the two movable holes corresponding to the two first blades arranged in a pair are connected.

72. A vane pump, characterized in that: The invention comprises a rotor assembly, wherein the rotor assembly comprises a shaft body and a plurality of blades, wherein the shaft body is extended and arranged along a first direction and is rotatably arranged around its central axis, wherein each blade is movably mounted on a side wall of the shaft body along a radial direction of the shaft body, wherein the shaft body comprises a main shaft, wherein a plurality of mounting grooves are spaced apart along a circumferential direction of the side wall of the main shaft, and each blade is movably mounted on the mounting groove; The blade has a first end located in the installation groove and a second end exposed outside the installation groove, and in the direction from the first end to the second end, at least a portion of the blade close to the second end is gradually narrowed in width.

73. The vane pump according to claim 72, characterized in that At the narrowing width portion, the wall surfaces on both sides of the blade in the circumferential direction form guide surfaces, and the guide surfaces are inclined straight surfaces.

74. The vane pump according to claim 72, characterized in that At the narrowing width portion, the wall surfaces on both sides of the blade in the circumferential direction form guide surfaces, and the guide surfaces are cambered surfaces.

75. The vane pump according to claim 72, characterized in that Each of the blades includes two first blades arranged in a pair, and the two first blades arranged in a pair are symmetrical about the central axis of the shaft body, and a movable hole is opened at the bottom of each mounting groove; the rotor assembly also includes a shaft linkage part, which is movably installed in each of the movable holes and is linked to each of the first blades arranged in a pair.

76. The vane pump according to claim 75, characterized in that The rotor assembly also includes a plurality of movable pins, each of which is movably arranged in the radial direction of the shaft body through the corresponding movable hole and connected to the corresponding blade; the two movable holes corresponding to the two first blades arranged in pairs are connected, and the corresponding two movable pins are connected to form the linkage member.

77. The vane pump according to claim 76, characterized in that The blades are arranged in four numbers at equal intervals along the circumference of the shaft body, so that each of the blades is the first blade, and the movable pins are arranged in two numbers.

78. The vane pump according to claim 76, characterized in that The radial cross-section of each movable pin is semicircular, and when two movable pins are cross-stacked and installed, their flat surfaces abut against each other.

79. The vane pump according to claim 78, characterized in that The movable pin is configured as a rigid structure.

80. The vane pump of claim 75, wherein: A groove is formed at one end of the main shaft close to each of the movable holes, and the groove is communicated with each of the movable holes.

81. The vane pump according to claim 72, characterized in that The vane pump also includes a stator assembly, which is provided with a mounting hole along the first direction, and an annular cavity is recessed around the outer periphery of the mounting hole, and the annular cavity is communicated with the mounting hole; the rotor assembly and the stator assembly jointly define a fluid space in the annular cavity, and the radial width of the fluid space is set to be variable, and the shaft body is rotatably mounted on the mounting hole around its own central axis.

82. The vane pump according to claim 81, characterized in that The vane pump also includes a pump housing, which forms a mounting cavity, and the mounting cavity is provided with a liquid inlet hole and a liquid outlet hole; the stator assembly includes two disc-shaped members arranged at intervals along the first direction, and an annular member connected between the two disc-shaped members, the two disc-shaped members are penetrated by the mounting holes, and the two disc-shaped members and the annular member jointly define the annular cavity; the inner diameter of the annular member is arranged to vary along its circumference, and the two disc-shaped members have disc end surfaces close to each other, and the disc end surfaces are recessed to form at least one recessed portion, and the recessed portion is respectively connected to the liquid inlet hole and the liquid outlet hole.

83. The vane pump according to claim 82, characterized in that The outer peripheral side walls of the two disk-shaped parts and the annular part are provided with anti-rotation grooves in the axial direction at corresponding positions; the stator assembly also includes a anti-rotation pin, which is sequentially penetrated and installed in the anti-rotation grooves of each of the disk-shaped parts and the annular part.

84. The vane pump according to claim 82, characterized in that The installation cavity penetrates the pump housing along the first direction to form two openings, and the liquid inlet and the liquid outlet are arranged beside the openings; the vane pump also includes two end covers, and the two end covers are detachably covered on the two openings respectively.

85. The vane pump according to claim 82, characterized in that The liquid inlet hole and the liquid outlet hole are arranged at intervals and extend side by side in the same direction. The pump housing is provided with a bypass channel between the liquid inlet hole and the liquid outlet hole, and the bypass channel is connected to the liquid inlet hole and the liquid outlet hole; the vane pump also includes an opening and closing member, which is movably arranged in the bypass channel to adjust the conduction and cutoff of the bypass channel.

86. A method for preparing a wear-resistant self-lubricating resin material, characterized in that: The following steps are involved: S1: adding titanium nitride powder and ammonia water to an ethanol solution, adding tetrabutyl titanate while stirring, continuing to stir the reaction after the addition is completed, filtering the reaction solution after the reaction is completed, washing the precipitate and drying it to obtain a titanium nitride / titanium oxide composite material; S2: melt-blending the polyetheretherketone resin, the titanium nitride / titanium oxide composite material obtained in step S1, graphene nanosheets, an antioxidant, and a coupling agent, and extruding and granulating the mixture through a twin-screw extruder to obtain a wear-resistant self-lubricating resin material.

87. The method for preparing a wear-resistant self-lubricating resin material according to claim 86, characterized in that: In step S1, the average particle size of the titanium nitride powder is 200-300 nm; the concentration of the ammonia solution is 20-30 wt %.

88. The method for preparing a wear-resistant self-lubricating resin material according to claim 86, characterized in that: In step S1, the usage ratio of the titanium nitride powder, ammonia water and tetrabutyl titanate is (0.5-1) g: (3-5) ml: (2-3) ml.

89. The method for preparing a wear-resistant self-lubricating resin material according to claim 86, characterized in that: In step S1, the temperature for continuing stirring the reaction is room temperature and the time is 30-60 minutes.

90. The method for preparing a wear-resistant self-lubricating resin material according to claim 86, characterized in that: In step S2, the average diameter of the graphene nanosheets is 5-10 μm, and the average thickness is 5-10 nm.

91. The method for preparing a wear-resistant self-lubricating resin material according to claim 86, characterized in that: In step S2, the antioxidant is a mixture of one or more of pentaerythritol stearate, octadecyl propionate, and tris(2,4-di-tert-butylphenyl) phosphite.

92. The method for preparing a wear-resistant self-lubricating resin material according to claim 86, characterized in that: In step S2, the coupling agent is a mixture of one or more of γ-glycidyloxypropyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-aminopropyltriethoxysilane, and γ-mercaptopropyltriethoxysilane.

93. The method for preparing a wear-resistant self-lubricating resin material according to claim 86, characterized in that: In step S2, the amounts of the components used, in parts by weight, are 50-60 parts of polyetheretherketone resin, 5-10 parts of titanium nitride / titanium oxide composite material, 3-8 parts of graphene nanosheets, 0.1-0.5 parts of antioxidant, and 0.1-0.5 parts of coupling agent.

94. The method for preparing a wear-resistant self-lubricating resin material according to claim 86, characterized in that: In step S2, during extrusion granulation, the temperature of the rear section of the twin-screw extruder is 320-350°C, the temperature of the middle section is 360-370°C, the temperature of the front section is 370-410°C, the aspect ratio of the screw is 15-25, and the screw speed is 200-800r / min.

95. An application of a wear-resistant self-lubricating resin material in a vane pump, characterized in that: The material obtained by the method according to any one of claims 86 to 94 is directly made into or coated on the stator or blade surface of a vane pump.

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