CN109441800B

CN109441800B - High-pressure large-flow variable vane pump

Info

Publication number: CN109441800B
Application number: CN201811140803.1A
Authority: CN
Inventors: 陈行
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2020-06-23
Anticipated expiration: 2038-09-28
Also published as: CN109441800A

Abstract

The invention provides a high-pressure large-flow variable vane pump, which comprises a shell, a rotor, vanes, a swash plate and an oil distribution block, wherein the shell covers the outside of the rotor and shares the axis with the rotor; the blade is installed on first locating slot and second locating slot at the same time, the swash plate is put in the body aslant, the axis of the swash plate does not coincide with axis of the rotor, open the concrete chute corresponding to blade on the said swash plate, the slip groove is slipped and covered on blade, join in marriage the end face of the oil block and rotor; the rotor drives the shell and the blades to coaxially rotate together when the rotor rotates, the swash plate is further driven to rotate around the axis of the rotor, and in the rotating process, the sliding groove in the swash plate slides along the blades, so that the volume of the accommodating cavity is periodically changed, and a high-pressure accommodating cavity and a low-pressure accommodating cavity are formed.

Description

High-pressure large-flow variable vane pump

Technical Field

The invention relates to a vane pump, in particular to a high-pressure large-flow variable vane pump.

Background

The existing vane pump structure is that a rotor is eccentrically arranged in an oil cylinder body, vanes are radially arranged in the rotor or form a certain angle with the radius of the rotor, the rotor rotates at a high speed when in work, the vanes are thrown out under the action of centrifugal force to form a sealed cavity with the oil cylinder body, and the volume changes to generate pressure when the vanes rotate. The vane pump has the advantages that the sealing performance is poor and the output pressure is low because the vanes and the oil cylinder body are sealed by a contact line, and in addition, the relative linear velocity of the vanes and the oil cylinder body is very high during rotation, so that great friction is generated, the whole vane pump is quickly abraded, the service life is short, and the efficiency is low. Thus, the rotational speed of the pump cannot be too high. In addition, in order to ensure that the vanes can be safely moved in and out of the rotor during rotation, the rotor must have a considerable diameter, which necessitates a small displacement, particularly in variable displacement pumps.

Disclosure of Invention

The invention aims to provide a high-pressure large-flow variable vane pump, which has the advantages that all sealing parts are surface seals, the pump is not easy to wear, the relative linear velocity of a vane and a shell is zero, the pump can run at extremely high speed, the volume is small, the discharge capacity is large, and the output pressure is high.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a high-pressure large-flow variable vane pump comprises a shell, a rotor, vanes, a swash plate and an oil distribution block, wherein the rotor is positioned in the center, the shell covers the outside of the rotor and shares the axis with the rotor, and at least three first positioning grooves which are uniformly distributed along the circumferential direction are formed in the shell; second positioning grooves which are in one-to-one correspondence with the first positioning grooves are also formed in the outer surface of the rotor, and oil ports are formed between every two adjacent second positioning grooves; the blades are simultaneously arranged on the first positioning groove and the second positioning groove, the swash plate is obliquely arranged in the shell, the axis of the swash plate is not overlapped with the axis of the rotor, sliding grooves which correspond to the blades one by one are formed in the swash plate, the sliding grooves are sleeved on the blades in a sliding mode, and the sliding grooves and the blades are sealed through sealing elements; the oil distribution block is connected with one end face of the rotor; the utility model discloses a rotor, including the swash plate, the rotor is including the casing, the rotor is including rotor inner wall, two adjacent blades, form one between rotor outer wall and the swash plate surface and hold the chamber, hold the chamber and be linked together with the hydraulic fluid port, when the rotor rotates, the rotor drives casing and blade coaxial rotation together, further drive the swash plate and rotate around its self axis, at the rotation in-process, spout on the swash plate slides along the blade, make the volume that holds the chamber take place periodic variation, periodic formation high pressure holds chamber and low pressure and holds the chamber, the low pressure holds the chamber and passes through the oil distribution piece oil.

Furthermore, a waist drum-shaped ball table A2 with two spherical crowns cut off at two ends in parallel is arranged in the rotor, at least three grooves B2 are formed in the ball table A2, the ball table surface A2 is divided equally, the width of the groove B2 is the same as the thickness of the blade, one end of the ball table A2 is a conical side surface C2, grooves E2 which are in one-to-one correspondence with the grooves B2 are formed in the conical side surface C2, the conical side surface C2 is divided equally, the width of the groove E2 is the same as the thickness of the blade, and the grooves B2 and E2 are communicated to form a second positioning groove; a hole K2 is formed between every two adjacent grooves E2 on the conical side surface C2; the surface connected with the conical side surface C2 is a spherical surface G2, the radius and the spherical center of the spherical surface G2 are respectively the same as the radius and the spherical center of a spherical surface A1 in the shell, one end surface of the rotor is a circular ring surface I2, holes L2 corresponding to the holes K2 are evenly distributed in the circular ring surface I2, and the holes L2 are communicated with the holes K2 corresponding to the holes L2 to form an oil port for feeding oil or discharging oil.

Furthermore, the shell is provided with an inner spherical surface A1 and an outer spherical surface B1, one end of the shell is a circular ring surface D1 with a truncated spherical crown, the other end of the shell is a conical surface E1, at least three grooves C1 are formed in the inner spherical surface A1 and are equally divided into the inner spherical surface A1, the bottom of each groove C1 is a part of the circular ring surface D1, the width of each groove C1 is the same as the thickness of each blade, and each groove C1 is a first positioning groove.

Furthermore, the number of the blades is the same as that of the first positioning grooves, wherein one blade is formed by enclosing a front parallel plane A3, a front parallel plane B3, an upper cylindrical surface C3, a lower cylindrical surface D3 and two side surfaces; the radius and the center of a cylindrical surface C3 are respectively the same as those of the bottom surface of a groove C1 on an inner spherical surface A1 of the shell (1), the radius and the center of a cylindrical surface D3 are respectively the same as those of a groove B2 on a spherical surface of the rotor, one side surface of each blade is positioned in the sliding groove, and the other side surface of each blade is abutted against the bottom surface of a groove E2.

Furthermore, the swash plate is annular, one side of the swash plate is a conical surface A4, the other side of the swash plate is a conical surface B4, the periphery of the swash plate is a spherical surface C4, the diameter of the spherical surface C4 is equal to that of the spherical surface A1 in the shell, the middle of the swash plate is an inner circular spherical surface D4, the diameter of the inner circular spherical surface D4 is equal to that of the ball table A2, the swash plate is provided with at least three long holes N4 along the radial direction, the uniform disc is divided, the long hole N4 is a sliding groove, the cross section of the sliding groove is formed by sequentially connecting a conical plane S4, an arc P4 and a conical plane M4, the outer ends of the conical plane S4 and the conical plane M4 are both connected with an arc R;

the side taper surface A4 of the swash plate can be replaced by a flat surface.

Furthermore, the oil distribution block is a cylinder, the diameter of the outer cylindrical surface A5 of the cylinder is equal to the diameter of the circular surface I2 at one end of the rotor, two kidney-shaped through holes B5 and C5 are formed in the cylinder, one kidney-shaped through hole is communicated with the high-pressure cavity, and the other kidney-shaped through hole is communicated with the low-pressure cavity.

Furthermore, the sealing element comprises cushion blocks and elastic sealing strips, one elastic sealing strip and one cushion block are sequentially arranged on each circular arc R4 from inside to outside, and the two cushion blocks are respectively positioned at two sides of one blade and are abutted against the blade;

alternatively, the pad and the flexible seal strip may be combined to be integrally placed in the circular arc R4.

Furthermore, the cushion block is long-strip-shaped, the cross section of the cushion block is crescent-shaped, and the length of the cushion block is equal to that of the long hole N4;

the elastic sealing strip is strip-shaped, the cross section of the elastic sealing strip is semicircular, the radius of the outer circle of the elastic sealing strip is the same as that of the circular arc R4, the radius of the inner circle of the elastic sealing strip is the same as that of the crescent of the cushion block, and the length of the elastic sealing strip is equal to that of the long hole N4.

Further, the side wall of the oblique cone is a conical surface A8, the conical surface A8 is completely attached to the conical surface B4 of the swash plate, the cone end of the oblique cone is a spherical surface C8, the spherical surface C8 is concentric with the spherical table a2 of the rotor and has the same radius, the bottom end of the oblique cone is a spherical surface D8 or a plane, and the spherical surface D8 is concentric with the spherical surface a1 in the housing and has the same radius or has a radius smaller than the radius of the spherical surface a 1.

Furthermore, the tilting mechanism also comprises an inclined cone which is positioned at the outer side of the tilting tray and is abutted against the tilting tray; or, a shaft is directly arranged at the center of the swash plate.

The invention has the advantages that:

1) all sealing parts are surface sealing;

2) the discharge capacity is large, the pressure is high, and the efficiency is high;

3) compared with the traditional plunger pump and the traditional vane pump, the vane pump provided by the invention has high specific power;

4) if the inclination angle of the oblique cone, namely the included angle between the axis of the oblique disc and the axis of the rotor is adjusted, the flow of the pump can be adjusted;

5) the relative linear velocity of the rotor and the shell is zero, and the rotor can run at extremely high speed;

6) the structure is compact, and the processing is relatively easy;

7) low cost and long service life.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2a is a schematic view of the housing construction of the present invention;

FIG. 2b is a schematic view of the kk section of FIG. 2 a;

FIG. 3a is a schematic view of a rotor construction;

FIG. 3b is a left side view of FIG. 3 a;

FIG. 4a is a schematic view of a blade configuration of the present invention;

FIG. 4b is a view from direction K of FIG. 4 a;

FIG. 5a is a schematic view of the swash plate structure of the present invention;

FIG. 5b is a right side view of FIG. 5 a;

FIG. 5c is a schematic cross-sectional view M-M of FIG. 5 a;

FIG. 6 is a schematic view of the oil distribution block structure of the present invention;

FIG. 7 is a longitudinal schematic view of the spacer of the present invention;

FIG. 8 is a longitudinal schematic view of the flexible sealing strip of the present invention;

FIG. 9 is a schematic view of the oblique cone structure of the present invention;

FIG. 10 is a partial schematic view of the swashplate, vanes, blocks and elastomeric seals of the present invention;

FIG. 11 is a schematic view of the eccentric disposition of the spacer and the resilient seal strip;

in the figure: 1. the oil pump comprises a shell, 2. a rotor, 3. blades, 4. a swash plate, 4. an oil distribution block, 6. a cushion block, 7. a sealing strip and 8. an oblique cone.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. In the following description and in the drawings, the same numbers in different drawings identify the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the claims below. Various embodiments of the present description are described in an incremental manner.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a high-pressure large-flow variable vane pump, including a casing 1, a rotor 2, vanes 3, a swash plate 4, and an oil distribution block 5, where the rotor 2 is located at the center, the casing 1 covers the outside of the rotor 2 and shares the axis with the rotor 2, and at least three first positioning grooves uniformly distributed along the circumferential direction are formed in the casing 1; the outer surface of the rotor 2 is also provided with second positioning grooves corresponding to the first positioning grooves one by one, and oil ports are formed between every two adjacent second positioning grooves; the blades 3 are simultaneously arranged on the first positioning groove and the second positioning groove, the swash plate 4 is obliquely arranged in the shell 1, the axis of the swash plate 4 is not overlapped with the axis of the rotor 2, a sliding groove corresponding to the blades 3 is formed in the swash plate 4, the sliding groove is sleeved on the blades 3 in a sliding mode, and the sliding groove and the blades 3 are sealed through sealing parts; the oil distribution block 5 is connected with one end face of the rotor 2; casing 1 inner wall, two adjacent blades 3, form between rotor 2 outer wall and the sloping cam plate 4 surface and hold the chamber, it is linked together with the hydraulic fluid port to hold the chamber, when rotor 2 rotates, rotor 2 drives casing 1 and blade 3 and coaxially rotates together, further drive sloping cam plate 4 and rotate around its self axis, in the rotation process, spout on sloping cam plate 4 slides along blade 3, make the volume that holds the chamber take place periodic variation, periodic formation high pressure holds the chamber and holds the chamber with the low pressure, the low pressure holds the chamber and inhales the oil through joining in marriage oily piece 5, the high pressure holds the chamber and arranges the oil through joining in marriage oily piece 5.

It should be noted that the number of the blades 3 is at least 3, the number of the first positioning grooves, the number of the second positioning grooves and the number of the sliding grooves are all the same as the number of the blades 3, and the number of the blades 3 is taken as 9 as an example to further illustrate the specific embodiments of the present invention, and those skilled in the art can obtain other embodiments without any doubt from the following description.

Fig. 2a and 2b show the shape of the housing 1 according to the invention. The shell 1 is provided with an inner spherical surface A1 and an outer spherical surface B1, one end of the shell is a circular ring surface D1 with a truncated spherical crown, the other end of the shell is a conical surface E1, the inner spherical surface A1 is provided with nine grooves C1, the inner spherical surface A1 is uniformly divided, the bottom of each groove C1 is a part of the circular ring surface D1, the width of each groove C1 is the same as the thickness of each blade 3, and each groove C1 is a first positioning groove; the radius and the center of the bottom surface of the groove C1 are respectively the same as the radius and the center of the cylindrical surface C3 of the blade 3.

Fig. 3a and 3b show the shape of the rotor 2 of the invention. The middle of the rotor 2 is a waist drum-shaped ball table A2 with two spherical crowns cut off at two ends in parallel, nine grooves B2 are formed in a ball table A2, a ball table surface A2 is divided equally, the bottom of the groove B2 is a circular part like a meridian on a globe, the width of the groove B2 is the same as the thickness of the blade 3, one end of the ball table A2 is a conical side surface C2, nine grooves E2 are formed in a conical side surface C2, the conical side surface C2 is divided equally, the width of the groove E2 is the same as the thickness of the blade 3, and the groove B2 is communicated with the groove E2 to form a second positioning groove; two adjacent grooves E2 on the conical side surface C2 are provided with a hole K2, and the number of the holes is nine; the surface connected with the conical side surface C2 is a spherical surface G2, the radius and the spherical center of the spherical surface G2 are respectively the same as the radius and the spherical center of a spherical surface A1 in the shell 1, one end surface of the rotor 2 is an annular surface I2, holes L2 (nine holes are also uniformly distributed on the annular surface I2 and correspond to the holes K2, and the holes L2 are communicated with the holes K2 corresponding to the holes L2 to form an oil port for feeding oil or discharging oil; of course, the shapes of the holes L2 and K2 may be circular, rectangular, trapezoidal, etc.

Fig. 4a and 4b show the shape of the blade 3 according to the invention. The number of the blades 3 is nine, wherein one blade 3 is formed by enclosing a front parallel plane A3, a back parallel plane B3, an upper cylindrical surface C3, a lower cylindrical surface D3 and two side surfaces (E3L3 and F3M 3); the radius and the center of the cylindrical surface C3 are respectively the same as those of the bottom surface of the groove C1 on the spherical surface A1 in the shell 1, the radius and the center of the cylindrical surface D3 are respectively the same as those of the bottom surface of the groove B2 on the spherical surface of the rotor 2, one side surface of the blade 3 is positioned in the sliding groove, and the other side surface of the blade 3 is abutted to the bottom surface of the groove E2.

Fig. 5a-5c show the shape of the swash plate 4 according to the invention. The swash plate 4 is annular, one side of the swash plate is a conical surface A4, the other side of the swash plate is a conical surface B4, the periphery of the swash plate is a spherical surface C4, the diameter of the spherical surface C4 is equal to that of an inner spherical surface A1 of the shell 1, the middle of the swash plate 4 is an inner circular spherical surface D4, the diameter of the swash plate is equal to that of the spherical table A2, nine long holes N4 are radially arranged on the swash plate 4, a disc is equally divided, the long holes N4 are sliding grooves (an E4J4I4F4 area in figure 5 a), the cross section of each sliding groove is formed by sequentially connecting a conical plane S4, an arc P4 and a conical plane M4, the outer ends of the conical plane S4 and the conical plane M4 are both connected with an arc R4, the two arcs R4 are;

of course, the side taper surface a4 of the swash plate 4 may be replaced by a flat surface.

Fig. 6 shows the shape of the oil distribution block 5 of the present invention. The oil distribution block 5 is a cylinder, the diameter of the outer cylindrical surface A5 of the cylinder is equal to the diameter of the circular surface I2 at one end of the rotor 2, two kidney-shaped through holes B5 and C5 are formed in the cylinder, one kidney-shaped through hole is communicated with the high-pressure cavity, and the other kidney-shaped through hole is communicated with the low-pressure cavity.

Fig. 11 shows the shape of the spacer 6 and the elastic sealing strip 7 of the present invention. The sealing element comprises a cushion block 6 and an elastic sealing strip 7, wherein the elastic sealing strip 7 and the cushion block 6 are sequentially arranged on each circular arc R4 from inside to outside, and the two cushion blocks 6 are respectively positioned at two sides of one blade 3 and are abutted against the blade 3; alternatively, the pad 6 and the elastic sealing strip 7 can be combined into a whole to be placed in the circular arc R4.

The cushion blocks 6 are long strips, the longitudinal section of each cushion block is shown in fig. 7, the cross section of each cushion block is crescent, the number of the cushion blocks 6 is 18, and the length of each cushion block is equal to that of the long hole N4 on the swash plate 4. The elastic sealing strips 7 are also long strips, the longitudinal section of each elastic sealing strip is shown as 8, the cross section of each elastic sealing strip is semicircular, the radius of an outer circle of each elastic sealing strip is the same as that of a cross section circular arc R4 of a long hole N4 of the swash plate 4, the radius of an inner circle of each elastic sealing strip is the same as that of an arched cross section of the cushion block 6, the elastic sealing strips are concentric (shown in figure 10) and can be also non-concentric (shown in figure 11), the total number of the elastic sealing strips 7 is 18, the length of each elastic sealing strip is equal to that of nine long holes N4 on the swash plate 4.

Fig. 9 shows the shape of the oblique cone 8 of the present invention. The side wall of the oblique cone 8 is a conical surface A8, the conical surface A8 is completely attached to the conical surface B4 of the swash plate 4, the cone end of the oblique cone 8 is a spherical surface C8, the spherical surface C8 is concentric with the spherical platform A2 of the rotor 2, the radius of the spherical surface C8 is the same as that of the spherical platform A2 of the rotor 2, the bottom end of the oblique cone 8 is a spherical surface or a plane, and the spherical surface A1 is concentric with the inner spherical surface A1 of the shell 1, the radius of the spherical. Of course, the oblique cone 8 is not required, but a shaft is directly arranged at the center of the oblique plate 4.

Other techniques not described are all known to those skilled in the art, and are not described herein again.

The operation principle of the invention is as follows:

as shown in fig. 1, the inner wall of the housing 1, two adjacent blades 3, the outer wall of the rotor 2 and the surface of the swash plate 4 form a cavity, and there are nine cavities; in the illustration of fig. 1, the volume of the uppermost chamber is the largest and the volume of the lowermost chamber is the smallest. When the rotor 2 rotates, the rotor 2 drives the shell 1 and the blade 3 to coaxially rotate together, the swash plate 4 is further driven to rotate around the axis of the rotor 2, the axis of the swash plate 4 is not overlapped with the axis of the rotor 2, in the rotating process, the sliding groove in the swash plate 4 slides along the blade 3, so that the volume of the containing cavity is periodically changed, the volume of the containing cavity at the lowest end of the pump is gradually increased from the minimum, at the moment, the containing cavity is disconnected with the high-pressure cavity and is communicated with the low-pressure cavity through the oil distribution block 5, and the containing cavity starts to absorb oil through the oil distribution block 5. The volume of the chamber is maximized when the rotor 2 is rotated from the lowermost end to the uppermost end. When the rotor 2 continues to rotate, namely rotates from the uppermost end to the lowermost end, the volume of the containing cavity begins to shrink, the containing cavity is disconnected from the low-pressure cavity and communicated with the high-pressure cavity through the oil distribution block 5, and the containing cavity begins to discharge oil through the oil distribution block 5. This completes one cycle. The rotation is continued, and the oil is continuously absorbed and discharged in such a way repeatedly. The other chambers are also the same. If the angle of inclination of the oblique cone 8, i.e. the angle between the axis of the swashplate 4 and the axis of the rotor 2, is adjusted, the flow rate of the pump can be adjusted.

The above-described embodiments are intended to illustrate rather than to limit the invention, which is intended to be covered by the following claims.

Claims

1. A high-pressure large-flow variable vane pump is characterized by comprising a shell (1), a rotor (2), vanes (3), a swash plate (4) and an oil distribution block (5), wherein the rotor (2) is positioned at the center, the shell (1) covers the outside of the rotor (2) and shares the same axis with the rotor (2), and at least three first positioning grooves which are uniformly distributed along the circumferential direction are formed in the shell (1); second positioning grooves which are in one-to-one correspondence with the first positioning grooves are also formed in the outer surface of the rotor (2), and oil ports are formed between every two adjacent second positioning grooves; the blades (3) are simultaneously arranged on the first positioning groove and the second positioning groove, the swash plate (4) is obliquely arranged in the shell (1), the axis of the swash plate (4) is not overlapped with the axis of the rotor (2), sliding grooves which correspond to the blades (3) one by one are formed in the swash plate (4), the sliding grooves are slidably sleeved on the blades (3), and the sliding grooves and the blades (3) are sealed through sealing parts; the oil distribution block (5) is connected with one end face of the rotor (2); casing (1) inner wall, two adjacent blade (3), form one between rotor (2) outer wall and sloping cam plate (4) surface and hold the chamber, hold the chamber and be linked together with the hydraulic fluid port, when rotor (2) rotate, rotor (2) drive casing (1) and blade (3) coaxial rotation together, further drive sloping cam plate (4) and rotate around its self axis, in the rotation process, spout on sloping cam plate (4) slides along blade (3), make the volume that holds the chamber take place periodic variation, periodic formation high pressure holds chamber and low pressure and holds the chamber, the low pressure holds the chamber and passes through oil distribution block (5) oil absorption, high pressure holds the chamber and arranges the oil through oil distribution block (5).

2. The high-pressure large-flow variable vane pump of claim 1, characterized in that the rotor (2) is a waist drum-shaped ball table A2 with two parallel truncated spherical crowns at two ends, the ball table A2 is provided with at least three grooves B2, the ball table A2 is divided equally, the width of the groove B2 is the same as the thickness of the vane (3), one end of the ball table A2 is a conical side surface C2, the conical side surface C2 is provided with grooves E2 corresponding to the grooves B2 one by one, the conical side surface C2 is divided equally, the width of the groove E2 is the same as the thickness of the vane (3), and the grooves B2 and E2 are communicated to form a second positioning groove; a hole K2 is formed between every two adjacent grooves E2 on the conical side surface C2; the surface connected with the conical side surface C2 is a spherical surface G2, the radius and the spherical center of the spherical surface G2 are respectively the same as the radius and the spherical center of an inner spherical surface A1 of the shell (1), one end surface of the rotor (2) is an annular surface I2, holes L2 corresponding to the holes K2 are evenly distributed in the end surface, and the holes L2 are communicated with the holes K2 corresponding to the holes L8525 to form an oil port for oil feeding or oil discharging.

3. A high pressure high flow variable vane pump according to claim 2, characterized in that the housing (1) has an inner spherical surface a1 and an outer spherical surface B1, one end is a circular ring surface D1 with a truncated spherical crown, the other end is a conical surface E1, the inner spherical surface a1 is provided with at least three grooves C1, the inner spherical surface a1 is equally divided, the bottom of the groove C1 is a part of the circular ring surface D1, the width of the groove C1 is the same as the thickness of the vane (3), and the groove C1 is the first positioning groove.

4. A high pressure high flow variable vane pump according to claim 3, characterized in that the vane (3) is enclosed by a front and a back parallel planes a3, B3, an upper and a lower two cylinders C3, D3 and two sides; the radius and the center of a cylindrical surface C3 are respectively the same as those of the bottom surface of a groove C1 on a spherical surface A1 in a shell (1), the radius and the center of a cylindrical surface D3 are respectively the same as those of the bottom surface of a groove B2 on a spherical surface of a rotor (2), one side surface of a blade (3) is positioned in the sliding groove, and the other side surface of the blade (3) is abutted to the bottom surface of a groove E2.

5. A high-pressure large-flow variable vane pump according to claim 4, characterized in that the swash plate (4) is circular, one side of the swash plate is a conical surface A4, the other side of the swash plate is a conical surface B4, the periphery of the conical surface B4 is a spherical surface C4, the diameter of the spherical surface C4 is equal to the diameter of the inner spherical surface A1 of the housing (1), the middle of the swash plate (4) is an inner spherical surface D4, the diameter of the inner spherical surface D4 is equal to the diameter of the ball platform A2, the swash plate (4) is provided with at least three long holes N4 along the radial direction, the long holes N4 are sliding grooves, the cross section of the sliding grooves is formed by sequentially connecting a conical plane S4, an arc P4 and a conical plane M4, the outer ends of the conical plane S4 and the conical plane M4 are both connected with an arc R4.

6. A high-pressure large-flow variable vane pump according to claim 5, characterized in that the oil distribution block (5) is a cylinder, the diameter of the outer cylindrical surface A5 of the cylinder is equal to the diameter of the circular ring surface I2 at one end of the rotor (2), two kidney-shaped through holes B5 and C5 are formed on the cylinder, one kidney-shaped through hole is communicated with the high-pressure cavity, and the other kidney-shaped through hole is communicated with the low-pressure cavity.

7. The high-pressure large-flow variable vane pump is characterized in that the sealing element comprises a cushion block (6) and an elastic sealing strip (7), wherein the elastic sealing strip (7) and the cushion block (6) are sequentially arranged on each circular arc R4 from inside to outside, and the two cushion blocks (6) are respectively positioned at two sides of one vane (3) and are abutted against the vane (3);

or the cushion block (6) and the elastic sealing strip (7) are combined into a whole and placed in the circular arc R4.

8. A high pressure high flow variable vane pump according to claim 7, characterized in that the pad (6) is elongated and has a crescent cross-section, the length of which is equal to the length of the long hole N4;

the elastic sealing strip (7) is long-strip-shaped, the cross section of the elastic sealing strip is semicircular, the radius of the outer circle of the elastic sealing strip is the same as that of the circular arc R4, the radius of the inner circle of the elastic sealing strip is the same as that of the crescent of the cushion block (6), and the length of the elastic sealing strip is equal to that of the long hole N4.

9. The high-pressure large-flow variable vane pump according to claim 7, characterized by further comprising an inclined cone (8), wherein the side wall of the inclined cone (8) is a conical surface A8, the conical surface A8 completely fits with the conical surface B4 of the swash plate (4), the cone end of the inclined cone (8) is a spherical surface C8, the spherical surface C8 is concentric with the spherical platform A2 of the rotor (2) and has the same radius, the bottom end of the inclined cone (8) is a spherical surface D8 or a plane, and the spherical surface D8 is concentric with the spherical surface A1 in the housing (1) and has the same radius or a radius smaller than the radius of the spherical surface A1.

10. A high pressure high flow variable capacity vane pump according to any one of claims 1 to 9, further comprising an inclined cone (8), the inclined cone (8) being located outside the swash plate (4) and abutting the swash plate (4);

or, a shaft is directly arranged at the center of the swash plate (4).