CN109538466B - High-pressure multi-blade pump - Google Patents

Abstract

The invention discloses a high-pressure multi-vane pump, which comprises a shell, a rotor and vanes, wherein the shell covers the outside of the rotor, the end surface of the shell inwards extends to form a circle of ring K1, the inner wall of the shell is uniformly provided with at least three first positioning grooves along the circumferential direction, the ring K1 is uniformly provided with second positioning grooves with the same number as the first positioning grooves along the circumferential direction, and the vanes are simultaneously arranged on the first positioning grooves and the second positioning grooves; the second positioning groove divides the circular ring K1 into a plurality of shifting pieces, a circular groove is formed in the side wall of the rotor, the circular ring K1 is positioned in the circular groove, sliding grooves which correspond to the first positioning grooves one by one are formed in the right side face of the circular groove, and the blades are arranged on the sliding grooves in a sliding mode; a containing cavity is formed between every two adjacent blades, the surface of the annular groove, the shifting piece and the inner wall of the shell, when the rotor rotates, the rotor drives the blades to rotate together, the blades push the shell to rotate around the axis of the shell, and in the rotating process, the blades slide on the sliding grooves in a reciprocating mode, so that the volume of the containing cavity changes periodically.

Description

High-pressure multi-blade pump

Technical Field

The invention relates to a multi-vane pump, in particular to a high-pressure multi-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 multi-vane pump which has the advantages that all sealing parts are surface seals, the wear is not easy, the relative linear velocity of a vane and a shell is zero, the high-pressure multi-vane 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 multi-vane pump comprises a shell, a rotor, vanes, an oil distribution block and a guide block, wherein the rotor is positioned in the center, the shell covers the outside of the rotor, the shell is hemispherical, a circle of ring K1 extends inwards from the end surface of the shell, the plane of the ring K1 is vertical to the axis of the shell, the inner wall of the shell is uniformly provided with at least three first positioning grooves along the circumferential direction, the ring K1 is uniformly provided with second positioning grooves with the same number as the first positioning grooves along the circumferential direction, the first positioning grooves are communicated with the second positioning grooves, the vanes are arranged on the first positioning grooves and the second positioning grooves, and the vanes are sealed with the second positioning grooves through first sealing elements; the second positioning groove divides the ring K1 into a plurality of shifting pieces, a ring groove is formed in the side wall of the rotor, the ring K1 is positioned in the ring groove, sliding grooves which correspond to the first positioning grooves one by one are formed in the right side face of the ring groove, and the blades are arranged on the sliding grooves in a sliding mode and are sealed through second sealing elements; a containing cavity is formed between every two adjacent blades, the surface of the ring groove, the shifting sheet and the inner wall of the shell, oil ports with the same number as the containing cavities are formed in one end of the rotor, one oil port is communicated with one containing cavity, and one end of the rotor is connected with an oil distribution block; the outer wall of the shell is provided with a convex circular ring J1, and the convex circular ring J1 is placed in the guide groove of the guide block; the axis of the rotor and the axis of the housing do not coincide;

when the rotor rotates, the rotor drives the blades to rotate together, the blades push the shell to rotate around the axis of the shell, and in the rotating process, the blades slide on the sliding grooves in a reciprocating mode, so that the volume of the containing cavity changes periodically to form a high-pressure containing cavity and a low-pressure containing cavity, the low-pressure containing cavity in the containing cavity absorbs oil through the oil distribution block, and the high-pressure containing cavity in the containing cavity discharges oil through the oil distribution block.

Furthermore, a waist drum-shaped ball table A2 with two parallel truncated spherical crowns at two ends is arranged in the rotor, a conical side surface C2 and a conical side surface D2 are arranged at two ends of the ball table A2, and a ring groove is formed by the ball table A2, the conical side surface C2 and the conical side surface D2; the conical side surface C2 is provided with grooves E2 corresponding to the first positioning grooves one by one, the grooves E2 are divided into the conical side surface C2, and the grooves E2 are sliding grooves; a hole K2 is formed between 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 surface connected with the conical side surface D2 is a spherical surface H2, the radius and the spherical center of the spherical surface G2 and the spherical center of the spherical surface H2 are the same as those of a spherical surface A1 in the shell, two end surfaces of the rotor are a circular ring surface I2 and a circular ring surface J2, holes L2 corresponding to the holes K2 are uniformly distributed on the circular ring surface I2, and the holes L2 are communicated with the holes K2 corresponding to the holes to form oil ports for oil inlet or oil discharge.

Furthermore, the cross section of the groove E2 is formed by sequentially connecting a conical plane S2, an arc P2 and a conical plane M2, the outer ends of the conical plane S2 and the conical plane M2 are respectively connected with an arc R2, the two arcs R2 are concentric, and a second sealing element is arranged in each arc R2.

Furthermore, the second sealing element comprises a cushion block and an elastic sealing strip, the elastic sealing strip and the cushion block are sequentially arranged on each circular arc R2 from inside to outside, and the two cushion blocks are respectively positioned on 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 R2.

Furthermore, the cushion block is in a long strip shape, the cross section of the cushion block is in a crescent shape, and the length of the cushion block is equal to the radial length of the ring K1;

the elastic sealing strip is strip-shaped, the cross section of the elastic sealing strip is semicircular, the radius of an outer circle of the elastic sealing strip is the same as that of the circular arc R2, the radius of an 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 circular ring K1 in the radial direction.

Furthermore, the shell is hemispherical and is provided with an inner spherical surface A1 and an outer spherical surface B1, the inner spherical surface A1 and the outer spherical surface B1 are waist drum-shaped spherical surfaces with spherical crowns of different sizes cut off at two ends in parallel, a circle of circular ring K1 extends towards the center of the sphere at the end surface of the inner spherical surface A1, the plane where the circular ring K1 is located is perpendicular to the axis of the shell, two parallel circular ring planes C1 and D1 are arranged at two sides of the circular ring K1, the middle of the circular ring K1 is provided with the inner spherical surface E1, and the diameter of the inner spherical surface E1 is equal to that of the spherical table A2; at least three grooves P1 are uniformly formed in the inner spherical surface A1 along the circumferential direction, and the grooves are first positioning grooves; the ring K1 is provided with long holes F1 with the same number as the grooves P1 along the radial direction of an inner spherical surface A1, the long holes F1 are uniformly distributed on the ring K1, and the long holes F1 are second positioning grooves, so that the ring K1 is divided into a plurality of shifting pieces; the long hole F1 is communicated with the groove P1, the width of the groove P1 is the same as the thickness of the vane, and the middle part of the outer spherical surface B1 protrudes outwards to form a circle of ring J1.

Furthermore, the first sealing element and the first sealing element have the same structure and also comprise cushion blocks and elastic sealing strips, the cross section of the long hole F1 is formed by sequentially connecting an arc L1, a straight line, another arc L1 and another straight line, one elastic sealing strip and one cushion block are sequentially arranged on each arc L1 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 may be incorporated into a single piece that is placed within arc L1.

Furthermore, the blade 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; the radius and the center of the cylindrical surface C3 are respectively the same as those of the groove bottom surface of the groove P1 on the shell, and the radius and the center of the cylindrical surface D3 are respectively the same as those of the ball table A2.

Furthermore, the oil distribution block is a cylinder, the diameter of the outer cylindrical surface A4 of the cylinder is equal to the diameter of the circular surface I2 at one end of the rotor, two kidney-shaped through holes B4 and C4 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.

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) the flow of the pump can be adjusted by adjusting the inclination angle of the guide block, namely adjusting the included angle between the axis of the ring K1 in the shell and the axis of the rotor;

5) the relative linear velocity of the rotor and the pump body is very low, and the rotor and the pump body 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. 2c is a schematic cross-sectional view M-M 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. 3c is a schematic cross-sectional view T-T 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. 5 is a schematic view of the oil distribution block structure of the present invention;

FIG. 6 is a longitudinal schematic view of the spacer of the present invention;

FIG. 7 is a longitudinal schematic view of the flexible sealing strip of the present invention;

FIG. 8 is a partial schematic view of the housing, vanes, spacer and elastomeric seal of the present invention;

FIG. 9 is a schematic view of the eccentric disposition of the spacer and the resilient sealing strip in the elongated opening F1 of the housing;

FIG. 10 is a partial schematic view of a rotor, blades, spacer blocks and elastomeric seal strips of the present invention;

FIG. 11 is a schematic illustration of the eccentric placement of the spacer and elastomeric seal in rotor slots E2 and F2;

in the figure: 1. the structure comprises a shell, 2. a rotor, 3. blades, 4. an oil distribution block, 5. a cushion block, 6. a sealing strip and 7. a guide block.

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 multi-vane pump, including a casing 1, a rotor 2, vanes 3, an oil distribution block 4, and a guide block 7, where the rotor 2 is located at the center, the casing 1 covers the rotor 2, the casing 1 is hemispherical, a circle of ring K1 extends inward from an end surface of the casing 1, a plane where the ring K1 is located is perpendicular to an axis of the casing 1, at least three first positioning grooves are uniformly formed in an inner wall of the casing 1 along a circumferential direction, second positioning grooves having the same number as the first positioning grooves are uniformly formed in the ring K1 along the circumferential direction, the first positioning grooves are communicated with the second positioning grooves, the vanes 3 are installed on the first positioning grooves and the second positioning grooves, and the vanes 3 and the second positioning grooves are sealed by a first sealing member; the second positioning groove divides the ring K1 into a plurality of shifting pieces, a ring groove is formed in the side wall of the rotor 2, the ring K1 is positioned in the ring groove, sliding grooves which are in one-to-one correspondence with the first positioning groove are formed in the right side face of the ring groove, and the blades 3 are arranged on the sliding grooves in a sliding mode and are sealed through second sealing elements; a containing cavity is formed among the two adjacent blades 3, the surface of the ring groove, the shifting sheet and the inner wall of the shell 1, oil ports with the same quantity as the containing cavities are formed in one end of the rotor 2, one oil port is communicated with one containing cavity, and one end of the rotor 2 is connected with an oil distribution block 4; the outer wall of the shell 1 is provided with a convex circular ring J1, and the convex circular ring J1 is arranged in the guide groove of the guide block 7; the axis of the rotor 2 and the axis of the housing 1 do not coincide;

when the rotor 2 rotates, the rotor 2 drives the blades 3 to rotate together, the blades 3 push the shell 1 to rotate around the axis of the shell, in the rotating process, the blades 3 slide on the sliding grooves in a reciprocating mode, the volume of the containing cavity changes periodically, a high-pressure containing cavity and a low-pressure containing cavity are formed, the low-pressure containing cavity in the containing cavity absorbs oil through the oil distribution block 4, and the high-pressure containing cavity in the containing cavity discharges oil through the oil distribution block 4.

It should be noted that the number of the blades 3 is at least 3, the number of the chutes is the same as the number of the blades 3, and the following takes the number of the blades 3 as 9 as an example to further illustrate the specific solution of the present invention, and those skilled in the art can obtain other embodiments of the number of the blades 3 without any doubt according to the following description.

Fig. 2a and 2b are schematic diagrams of the shape and structure of the housing 1 of the present invention. The shell 1 is hemispherical and is provided with an inner spherical surface A1 and an outer spherical surface B1, the inner spherical surface A1 and the outer spherical surface B1 are waist drum-shaped spherical surfaces with spherical crowns of different sizes cut off at two ends in parallel, a circle of circular ring K1 extends towards the center of the sphere at the end surface of the inner spherical surface A1, the plane where the circular ring K1 is located is perpendicular to the axis of the shell 1, two parallel circular ring planes C1 and D1 are arranged at two sides of the circular ring K1, the middle of the circular ring K1 is provided with the inner spherical surface E1, and the diameter of the inner spherical surface E1 is equal to that of the spherical table A2; nine grooves P1 are uniformly formed in the inner spherical surface A1 along the circumferential direction, and are first positioning grooves; the ring K1 is provided with long holes F1 with the same number as the grooves P1 along the radial direction of an inner spherical surface A1, the long holes F1 are uniformly distributed on the ring K1, and the long holes F1 are second positioning grooves, so that the ring K1 is divided into a plurality of shifting pieces; the long hole F1 is communicated with the groove P1, the width of the groove P1 is the same as the thickness of the vane 3, and the middle part of the outer spherical surface B1 protrudes outwards to form a circle of ring J1, which is similar to the outward extension part of the ring K1. The ring K1 and the ring J1 form a large ring, which may be separated from the casing 1 and formed as a swash plate, and the left and right halves of the casing 1 are fixed to the swash plate in close contact therewith.

Fig. 3a and 3b are schematic views showing the shape and structure of the rotor 2 of the present invention. The rotor 2 is a waist drum-shaped ball table A2 with two ends cutting off two ball crowns in parallel, two ends of the ball table A2 are a conical side surface C2 and a conical side surface D2, and the ball table A2, the conical side surface C2 and the conical side surface D2 form a ring groove; the conical side surface C2 is provided with grooves E2 corresponding to the first positioning grooves one by one, the grooves E2 are divided into the conical side surface C2, and the grooves E2 are sliding grooves; a hole K2 is formed between 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 surface connected with the conical side surface D2 is a spherical surface H2, the radius and the spherical center of the spherical surface G2 and the spherical center of the spherical surface H2 are the same as those of the spherical surface A1 in the shell 1, two end surfaces of the rotor 2 are a circular ring surface I2 and a circular ring surface J2, holes L2 corresponding to the holes K2 are uniformly distributed on the circular ring surface I2, and the holes L2 are communicated with the holes K2 corresponding to the holes to form oil ports for oil feeding or oil discharging. As shown in fig. 3c, the cross section of the groove E2 is formed by sequentially connecting a conical plane S2, an arc P2 and a conical plane M2, the outer ends of the conical plane S2 and the conical plane M2 are both connected with an arc R2, the two arcs R2 are concentric, and a second sealing element is installed in each arc R2.

Fig. 4a and 4b are schematic views of the shape and structure of the blade 3 of the present invention. The blades 3 share the same 9 pieces, and the blades 3 are enclosed by 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 the cylindrical surface C3 are respectively the same as those of the groove bottom surface of the groove P1 on the shell 1, and the radius and the center of the cylindrical surface D3 are respectively the same as those of the ball table A2.

Fig. 5 is a schematic diagram of the shape and structure of the oil distribution block 4 of the present invention. The oil distribution block 4 is a cylinder, the diameter of the outer cylindrical surface A4 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 B4 and C4 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.

The first sealing element and the first sealing element have the same structure and respectively comprise a cushion block 5 and an elastic sealing strip 6, as shown in fig. 6, the cushion block 5 is in a long strip shape, the cross section of the cushion block is in a crescent shape, and the length of the cushion block is equal to the radial length of a circular ring K1; as shown in fig. 7, the elastic sealing strip 6 is a long strip, 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 arc R2 or the radius of the arc L1, the radius of the inner circle of the elastic sealing strip is the same as that of the crescent of the cushion block 5, the elastic sealing strip is concentric (as shown in fig. 8 and 10), and the elastic sealing strip can be also eccentric (as shown in fig. 9 and 11) and has the length equal to the radial length of the circular ring K1;

as shown in fig. 8 and 9, when the first sealing member is mounted on the long hole F1, an elastic sealing strip 7 and a cushion block 6 are sequentially placed on each circular arc L1 from inside to outside, and the two cushion blocks 6 are respectively located on both sides of one blade 3 and abut 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 L1.

As shown in fig. 10 and 11, when the second sealing member is mounted on the circular arcs R2, an elastic sealing strip 6 and a cushion block 5 are sequentially placed on each circular arc R2 from inside to outside, and the two cushion blocks 5 are respectively located at two sides of one blade 3 and abut against the blade 3; alternatively, the pad 5 and the elastic sealing strip 6 can be combined into a whole to be placed in the circular arc R2.

The quantity of the cushion blocks 5 and the elastic sealing strips 6 is the same, and the number of the elastic sealing strips is 54. In this embodiment, the first seal and the second seal are configured to be the same, but may be different, in order to save the kind of the seal.

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, a closed cavity is formed between two adjacent blades 3, the surface of the ring groove, the shifting sheet and the inner wall of the shell 1, and 9 cavities are formed in total;

at the uppermost end, as shown in figure 1, the ring K1 on the housing 1 is at the leftmost position, where the volume of the chamber is at its maximum. At the lowermost end, the ring K1 on the housing 1 is at the rightmost position, where the volume of the chamber is at its smallest. When the rotor 2 rotates, the rotor 2 drives the blades 3 to rotate together, the blades 3 push the shell 1 to rotate around the axis of the shell, in the rotating process, the blades 3 slide in the sliding grooves in a reciprocating mode, so that the volume of the containing cavity changes periodically, the volume of the containing cavity at the lowest end of the pump is gradually increased from the minimum value, the containing cavity is disconnected from the high-pressure cavity and is communicated with the low-pressure cavity through the oil distribution block 4 on the right side, and the containing cavity starts to absorb oil through the oil distribution block 4 on the right side; when the rotor 2 is screwed from the lowest end to the highest end, the volume of the cavity reaches the maximum; 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 be reduced, the containing cavity is disconnected from the low-pressure cavity and communicated with the high-pressure cavity through the oil distribution block 4 on the right side, and the containing cavity begins to discharge oil through the oil distribution block 4 on the right side. 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.

The flow rate of the pump can be adjusted by adjusting the inclination angle of the guide block 7, i.e. the included angle between the axis of the ring K1 in the housing 1 and the axis of the rotor 2.

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 (9)

1. The high-pressure multi-vane pump is characterized by comprising a shell (1), a rotor (2), vanes (3), an oil distribution block (4) and a guide block (7), wherein the rotor (2) is positioned at the center, the shell (1) covers the outside of the rotor (2), the shell (1) is hemispherical, the end surface of the shell inwards extends to form a circle of ring K1, the plane where the ring K1 is positioned is vertical to the axis of the shell (1), the inner wall of the shell (1) is uniformly provided with at least three first positioning grooves along the circumferential direction, the ring K1 is uniformly provided with second positioning grooves with the same number as the first positioning grooves along the circumferential direction, the first positioning grooves are communicated with the second positioning grooves, the vanes (3) are arranged on the first positioning grooves and the second positioning grooves, and the vanes (3) are sealed with the second positioning grooves through first sealing elements; the second positioning groove divides the ring K1 into a plurality of shifting pieces, a ring groove is formed in the side wall of the rotor (2), the ring K1 is positioned in the ring groove, sliding grooves which are in one-to-one correspondence with the first positioning groove are formed in the right side face of the ring groove, and the blades (3) are arranged on the sliding grooves in a sliding mode and are sealed through second sealing elements; a containing cavity is formed among the two adjacent blades (3), the surface of the annular groove, the shifting piece and the inner wall of the shell (1), oil ports with the same number as the containing cavities are formed in one end of the rotor (2), one oil port is communicated with one containing cavity, and one end of the rotor (2) is connected with an oil distribution block (4); the outer wall of the shell (1) is provided with a convex circular ring J1, and the convex circular ring J1 is placed in the guide groove of the guide block (7); the axis of the rotor (2) and the axis of the shell (1) are not coincident;

when rotor (2) rotated, rotor (2) drove blade (3) and rotate together, and blade (3) promote casing (1) and rotate around its self axis, and at the rotation in-process, blade (3) is reciprocating sliding on the spout for the volume that holds the chamber takes place periodic variation, forms high pressure and holds the chamber and the low pressure holds the chamber, and the low pressure that holds in the chamber holds the chamber and holds the oil absorption through joining in marriage oil piece (4), and the high pressure that holds in the chamber holds the chamber and passes through joining in marriage oil piece (4) oil extraction.

2. A high-pressure multiple-vane pump according to claim 1, characterized in that the rotor (2) has a waist-drum-shaped frustum a2 with two spherical crowns cut off at its two ends in parallel, the frustum a2 has two conical sides C2 and D2 at its two ends, and the frustum a2, the conical sides C2 and D2 form annular grooves; the conical side surface C2 is provided with grooves E2 corresponding to the first positioning grooves one by one, the grooves E2 are divided into the conical side surface C2, and the grooves E2 are sliding grooves; a hole K2 is formed between 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 surface connected with the conical side surface D2 is a spherical surface H2, the radius and the spherical center of the spherical surface G2 and the spherical center of the spherical surface H2 are the same as those of the spherical surface A1 in the shell (1), two end surfaces of the rotor (2) are a circular ring surface I2 and a circular ring surface J2, holes L2 corresponding to the holes K2 are uniformly distributed on the circular ring surface I2, and the holes L2 are communicated with the holes K2 corresponding to the holes to form oil ports for oil feeding or oil discharging.

3. A high pressure multiple vane pump according to claim 2 wherein the cross-section of the groove E2 is formed by connecting a conical plane S2, an arc P2 and a conical plane M2 in sequence, the outer ends of the conical plane S2 and the conical plane M2 are connected with an arc R2, the two arcs R2 are concentric, and a second seal is mounted in each arc R2.

4. A high-pressure multiple-vane pump according to claim 3, characterized in that the second seal comprises a gasket (5) and a flexible gasket (6), one flexible gasket (6) and one gasket (5) are placed on each circular arc R2 from inside to outside, and the two gaskets (5) are respectively located on both sides of one vane (3) and abut against the vane (3);

or the cushion block (5) and the elastic sealing strip (6) can be combined into a whole to be placed in the circular arc R2.

5. High-pressure multiple-vane pump according to claim 4, characterized in that the spacer (5) is elongated and has a crescent-shaped cross section, the length of which is equal to the radial length of the ring K1;

the elastic sealing strip (6) 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 R2, the radius of the inner circle of the elastic sealing strip is the same as that of the crescent of the cushion block (5), and the length of the elastic sealing strip is equal to the radial length of the circular ring K1.

6. A high-pressure multiple-vane pump according to any one of claims 2-5, characterized in that the housing (1) is hemispherical and has an inner spherical surface A1 and an outer spherical surface B1, the inner spherical surface A1 and the outer spherical surface B1 are waist drum-shaped spherical surfaces with spherical caps of different sizes cut off at two ends in parallel, a circle of circular ring K1 extends towards the center of the sphere at the end surface of the inner spherical surface A1, the plane of the circular ring K1 is perpendicular to the axis of the housing (1), two parallel circular ring planes C1 and D1 are arranged at two sides of the circular ring K1, the middle of the circular ring K1 is an inner circular ring E1, the diameter of which is equal to the diameter of the spherical table A2; at least three grooves P1 are uniformly formed in the inner spherical surface A1 along the circumferential direction, and the grooves are first positioning grooves; the ring K1 is provided with long holes F1 with the same number as the grooves P1 along the radial direction of an inner spherical surface A1, the long holes F1 are uniformly distributed on the ring K1, and the long holes F1 are second positioning grooves, so that the ring K1 is divided into a plurality of shifting pieces; the long hole F1 is communicated with the groove P1, the width of the groove P1 is the same as the thickness of the vane (3), and the middle part of the outer spherical surface B1 protrudes outwards to form a circle of ring J1.

7. The high-pressure multi-vane pump of claim 6, wherein the first sealing element and the first sealing element are of the same structure and also comprise a cushion block (5) and an elastic sealing strip (6), the cross section of the long hole F1 is formed by sequentially connecting an arc L1, a straight line, another arc L1 and another straight line, one elastic sealing strip (6) and one cushion block (5) are sequentially arranged on each arc L1 from inside to outside, and the two cushion blocks (5) are respectively positioned at two sides of one vane (3) and abut against the vane (3);

or the cushion block (5) and the elastic sealing strip (6) can be combined into a whole to be placed in the circular arc L1.

8. High-pressure multiple-vane pump according to claim 6, characterized in that the vanes (3) are enclosed by front and rear parallel planes A3, B3, upper and lower cylinders C3, D3 and two side faces; the radius and the center of the cylindrical surface C3 are respectively the same as those of the groove bottom surface of the groove P1 on the shell (1), and the radius and the center of the cylindrical surface D3 are respectively the same as those of the ball table A2.

9. A high-pressure multiple-vane pump according to claim 7, characterized in that the oil distribution block (4) is a cylinder, the diameter of the outer cylindrical surface A4 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 B4 and C4 are formed on the cylinder, one kidney-shaped through hole is communicated with the high-pressure chamber, and the other kidney-shaped through hole is communicated with the low-pressure chamber.

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