A spherical pump with hydrostatic support

Abstract

The present invention discloses a spherical pump with a static pressure support, comprising a cylinder cover (1), a cylinder body (5), a piston (2), a turntable (4), a main shaft (6) and a main shaft support (7). The cylinder cover (1) and the cylinder body (5) are connected to form a spherical inner cavity. A slide groove (601) is arranged on the upper end surface of the main shaft (6). A slide shoe (403) at the end of the turntable shaft is inserted into the slide groove (601) at the upper end of the main shaft (6). The piston (2) and the turntable (4) are hinged and movably connected to the upper end of the main shaft (6) to form a rotor. A static pressure support is arranged between two parallel side surfaces of the slide shoe (403) and the slide groove (601). The static pressure support comprises a first liquid flow channel (404) and a second liquid flow channel (405) arranged on the turntable (4) and a liquid pressure bearing groove arranged on two parallel side surfaces of the slide shoe (403). The advantages of the present invention are that the unbalanced force during the operation of the spherical pump is eliminated and the power consumption of the spherical pump is reduced.

Description

Technical Field

[0001] This patent relates to a variable volume mechanism, in particular to a spherical pump with hydrostatic support. Background Art

[0002] The spherical pump is a new type of variable displacement mechanism invented in recent years. The advantages of the spherical pump are that it has no inlet / exhaust valves, few moving parts, and the moving parts are in surface contact, forming a surface sealing structure, so the sealing is reliable, and it can achieve high pressure and miniaturization of the structure. At present, the spherical pump has many applications in practice and is a new type of structure for pump machinery. However, since there is a fixed angle between the piston axis and the main shaft of the spherical pump, the pressure in the two working chambers changes back and forth. When one working chamber is at high pressure, the other working chamber is at low pressure. This will cause the piston and the turntable to swing to the low-pressure side, squeezing the spherical surface of the cylinder body, so that the gap between the turntable on this side and the spherical surface of the cylinder body becomes smaller, the oil film or water film is destroyed, and the friction force increases, which leads to increased power consumption and abnormal wear of the rotor and the sliding shoe. Summary of the invention

[0003] The purpose of the present invention is to design a spherical pump with hydrostatic support, to add hydrostatic support to the rotor shoe of the spherical pump, to balance the unbalanced force during the operation of the spherical pump through the liquid pressure generated by the spherical pump, to reduce the operating power consumption and to extend the life of the spherical pump.

[0004] The technical solution of the present invention is a spherical pump with static pressure support, which comprises:

[0005] A cylinder body, the cylinder body having a hemispherical inner cavity, and a turntable shaft through hole penetrating the outside of the cylinder is arranged on the cylinder body;

[0006] A cylinder head, the cylinder head having a hemispherical inner cavity, the lower end of the cylinder head being fixedly connected to the upper end of the cylinder body to form a spherical inner cavity, a piston shaft hole, a liquid inlet waist-shaped hole and a liquid discharge waist-shaped hole are arranged on the inner spherical surface of the cylinder head, the openings of the liquid inlet waist-shaped hole and the liquid discharge waist-shaped hole on the inner spherical surface of the cylinder head are respectively arranged in an annular space perpendicular to the axis of the piston shaft hole, the liquid inlet waist-shaped hole is connected to the liquid inlet hole at the upper end of the cylinder head, and the liquid discharge waist-shaped hole is connected to the liquid discharge hole at the upper end of the cylinder head;

[0007] A piston, the piston having a spherical top surface, two side surfaces at a certain angle and a piston pin seat at the lower part of the two side surfaces, a piston shaft protruding from the center of the spherical top surface of the piston, and the axis of the piston shaft passes through the center of the spherical top surface of the piston; the spherical top surface of the piston and the spherical inner cavity have the same center and form a sealed dynamic fit;

[0008] A turntable, which has a turntable pin seat corresponding to the piston pin seat at its upper part; a turntable shaft protrudes from the center of the lower end of the turntable, the turntable shaft passes through the center of the turntable spherical surface, and a sliding shoe is fixedly arranged at the end of the turntable shaft; the outer peripheral surface between the upper part and the lower end surface of the turntable is the turntable spherical surface, the turntable spherical surface and the spherical inner cavity have the same center and are tightly attached to the spherical inner cavity to form a sealed dynamic fit;

[0009] The main shaft and the main shaft bracket, the main shaft is connected to the lower end of the cylinder body through the main shaft bracket, the main shaft bracket is fixedly connected to the lower end of the cylinder body, and the main shaft bracket provides support for the rotation of the main shaft; a slide groove is arranged on the upper end surface of the main shaft; the lower end of the main shaft is connected to the power mechanism;

[0010] Wherein, the axes of the piston shaft hole and the turntable shaft both pass through the center of the spherical inner cavity, and the axis of the piston shaft hole forms an angle with the axis of the main shaft; the turntable pin seat and the piston pin seat match to form a cylindrical hinge, and a sealed dynamic fit is formed between the matching surfaces of the cylindrical hinge; after the turntable shaft extends from the lower end of the cylinder body, the sliding shoe is inserted into the slide groove at the upper end of the main shaft, and the two parallel side surfaces of the sliding shoe are in contact with the two side surfaces of the slide groove to form a sliding fit; the two parallel side surfaces of the sliding shoe are symmetrically arranged on both sides of the turntable axis and are parallel to the axis of the cylindrical hinge; when the main shaft rotates to drive the turntable and the piston, the sliding shoe slides back and forth in the slide groove, and the piston and the turntable swing relatively, forming two working chambers with alternating volumes between the upper end surface of the turntable, the two side surfaces of the piston and the spherical inner cavity; A static pressure support is arranged between the two parallel sides of the sliding shoe and the sliding groove; the static pressure support comprises a first liquid flow channel, a second liquid flow channel and a liquid pressure bearing groove arranged on the two parallel sides of the sliding shoe, the inlet of the first liquid flow channel is connected to one of the working rooms, the inlet of the second liquid flow channel is connected to the other working room, and the outlet of the first liquid flow channel and the outlet of the second liquid flow channel are respectively connected to the liquid pressure bearing grooves on the two parallel sides of the sliding shoe;

[0011] The first liquid flow channel inlet and the first liquid flow channel outlet are respectively located on both sides of a plane parallel to the two parallel sides of the sliding shoe where the axis of the rotating disk is located; the second liquid flow channel inlet and the second liquid flow channel outlet are respectively located on both sides of a plane parallel to the two parallel sides of the sliding shoe where the axis of the rotating disk is located;

[0012] The piston pin seat is a semi-cylindrical structure, with a groove in the middle of the semi-cylinder, and a through piston pin hole is arranged on the central axis of the semi-cylinder; the two ends of the turntable pin seat are semi-cylindrical grooves, the middle part is a convex semi-cylinder, and a through turntable pin hole is arranged on the central axis of the semi-cylinder; the center pin is inserted into the pin hole formed by the matching of the turntable pin seat and the piston pin seat to form a cylindrical hinge; the two ends of the center pin are arcs, and the shape of the arc is adapted to the shape of the spherical inner cavity;

[0013] The inlet of the first liquid flow channel is arranged on the upper end surface of the rotating disk and connected to one working room, and the outlet of the first liquid flow channel is arranged on one of the two parallel side surfaces of the sliding shoe; the inlet of the second liquid flow channel is arranged on the upper end surface of the rotating disk and connected to the other working room, and the outlet of the second liquid flow channel is arranged on the other side of the two parallel side surfaces of the sliding shoe;

[0014] A sliding shoe lining is provided between the side of the sliding shoe and the side of the sliding groove; the two parallel side surfaces of the sliding shoe are in contact with the sliding shoe linings on both sides and slide back and forth along the surface of the sliding shoe lining in the sliding groove;

[0015] The liquid pressure-bearing groove comprises a first liquid pressure-bearing groove and a second liquid pressure-bearing groove arranged on two parallel sides of the sliding shoe, the outlet of the first liquid flow channel is connected to the first liquid pressure-bearing groove, the outlet of the second liquid flow channel is connected to the second liquid pressure-bearing groove, the cross-sectional dimension of the first liquid pressure-bearing groove is larger than the cross-sectional dimension of the outlet of the first liquid flow channel, the cross-sectional dimension of the second liquid pressure-bearing groove is larger than the cross-sectional dimension of the outlet of the second liquid flow channel, and the surfaces of the first liquid pressure-bearing groove and the second liquid pressure-bearing groove are slightly lower than the planes on both sides of the sliding shoe;

[0016] The liquid pressure-bearing groove comprises a first multi-stage pressure-bearing groove and a second multi-stage pressure-bearing groove arranged on two parallel sides of the sliding shoe, the first liquid flow channel outlet is connected to the first multi-stage pressure-bearing groove, the second liquid flow channel outlet is connected to the second multi-stage pressure-bearing groove, the cross-sectional size of the first multi-stage pressure-bearing groove is larger than the cross-sectional size of the first liquid flow channel outlet, the cross-sectional size of the second multi-stage pressure-bearing groove is larger than the cross-sectional size of the second liquid flow channel outlet, and the surfaces of the first multi-stage pressure-bearing groove and the second multi-stage pressure-bearing groove are slightly lower than the planes on both sides of the sliding shoe; the first multi-stage pressure-bearing groove and the second multi-stage pressure-bearing groove each comprise a basic pressure-bearing groove and a plurality of auxiliary pressure-bearing grooves, the basic pressure-bearing groove is arranged at the center of two parallel sides of the sliding shoe, the bottom of the basic pressure-bearing groove is connected to the first liquid flow channel outlet or the second liquid flow channel outlet, a plurality of auxiliary pressure-bearing grooves are respectively arranged on the periphery of the basic pressure-bearing groove, and the plurality of auxiliary pressure-bearing grooves are sequentially surrounded on the periphery of the basic pressure-bearing groove;

[0017] The liquid pressure bearing groove is a circular groove or a rectangular groove;

[0018] Furthermore, it also includes a cooling channel, a throttling step is arranged in the liquid inlet hole, and the liquid in the liquid inlet hole enters the liquid suction working room and the cooling channel after being throttled by the throttling surface; the inlet of the cooling channel is connected with the liquid inlet hole, and the coolant diverted from the liquid inlet hole enters the cavity formed by the lower end of the cylinder body, the upper end of the main shaft and the upper end of the main shaft support through the cylinder head diversion channel and the cylinder body diversion channel in turn to form a liquid collecting pool, and then flows back to the liquid inlet hole through the main shaft support reflux groove, the cylinder body reflux channel and the cylinder head reflux channel in turn and is sucked into the liquid suction working room;

[0019] Furthermore, PEEK coatings are provided on the outer spherical surfaces of the piston and the turntable, the outer cylindrical surface of the piston shaft, and the semi-cylindrical cylindrical surface of the piston pin seat; the material of the sliding shoe liner is PEEK; a cylinder sleeve is provided at the part where the main shaft and the lower end of the cylinder body cooperate, and the cylinder sleeve is made of PEEK material, and cooling grooves that penetrate along the axial direction are provided on the inner cylindrical surface and the outer cylindrical surface of the cylinder sleeve.

[0020] The advantages of the present invention are: it eliminates the unbalanced force caused by the asymmetric compression of the two working chambers during the rotation of the rotor, and sets a static pressure support with a smaller force on the sliding shoe, so that a larger balancing force can be obtained on the turntable due to the lever effect; it ensures that the gaps between the piston spherical surface, the turntable spherical surface and the spherical inner cavity are uniform, reducing friction loss and friction; at the same time, it reduces the friction between the sliding shoe and the slide groove; it eliminates the unbalanced force during the operation of the spherical pump, ensures the gap between the matching surfaces, reduces the power consumption of the spherical pump, improves the cooling and lubrication conditions, and prolongs the failure time of the parts; it can be used for oil pumps and water pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : Schematic diagram of the ball pump structure;

[0022] Figure 2 : Figure 1 Middle AA section view;

[0023] Figure 3 : Figure 1 Middle BB section view;

[0024] Figure 4 : Schematic diagram of cylinder head structure;

[0025] Figure 5 : Figure 4 Middle CC section view;

[0026] Figure 6 : Schematic diagram of cylinder structure;

[0027] Figure 7 : Figure 6 Middle DD section view;

[0028] Figure 8 : Schematic diagram of the spindle structure;

[0029] Fig. 9 : Figure 8 Middle EE section view;

[0030] Fig.10 : Schematic diagram of the spindle support structure;

[0031] Fig.11 : Fig.10 Middle HH section view;

[0032] Fig.12 : Fig.10 Middle FF section view;

[0033] Fig.13 : Schematic diagram of piston structure;

[0034] Fig.14 : Fig.13 Middle LL section view;

[0035] Fig.15 : Schematic diagram of the turntable structure;

[0036] Fig.16 : Fig.15 Middle KK section view;

[0037] Fig.17 : Stereoscopic diagram of the turntable structure;

[0038] Fig.18 : Piston structure stereogram;

[0039] Fig.19 : Schematic diagram of the sliding shoe structure of the multi-stage liquid pressure-bearing tank being a rectangular pressure-bearing tank;

[0040] Fig. 20 : Fig.19 Middle MM section view;

[0041] Fig.21 : Schematic diagram of the sliding shoe structure of a multi-stage liquid pressure-bearing tank being a circular pressure-bearing tank;

[0042] Fig. 22 : Fig.21 Middle NN section view;

[0043] In the figure: 1-cylinder head; 2-piston; 3-center pin; 4-turntable; 5-cylinder body; 6-spindle; 7-spindle bracket; 8-bearing; 9-sealing ring; 10-slipper lining; 11-cylinder body sleeve;

[0044] 101-liquid inlet hole; 102-liquid discharge hole; 103-cylinder head diversion channel; 104-piston shaft hole; 105-liquid inlet waist-shaped hole; 106-liquid discharge waist-shaped hole; 107-cylinder head return channel; 108-chip removal groove;

[0045] 201- piston base; 202- piston PEEK coating;

[0046] 401-turntable base; 402-turntable PEEK coating; 403-slipper; 404-first liquid flow channel; 4041-first liquid flow channel inlet; 4042-first liquid flow channel outlet; 405-second liquid flow channel; 4051-second liquid flow channel inlet; 4052-second liquid flow channel outlet; 406-first liquid pressure-bearing groove; 407-second liquid pressure-bearing groove; 408-first multi-stage rectangular groove; 409-second multi-stage rectangular groove; 410-first multi-stage circular groove; 411-second multi-stage circular groove;

[0047] 501- cylinder body shunt channel; 502- cylinder body reflux channel;

[0048] 601- slide groove; 602- spindle flow hole; 701- spindle support return groove; 1001- workroom. DETAILED DESCRIPTION

[0049] like Figures 1 to 3 As shown, the spherical pump described in this patent includes a cylinder head 1, a piston 2, a turntable 4, a cylinder body 5, a main shaft 6, a main shaft bracket 7, etc. The cylinder body 5 and the cylinder head 1 have a hemispherical inner cavity, and the cylinder body 5, the cylinder head 1 and the main shaft bracket 7 are fixedly connected by screws in sequence to form a spherical pump casing with a spherical inner cavity, that is, a spherical pump stator; the piston 2, the turntable 4, and the main shaft 6 are connected in sequence to form a spherical pump rotor; the main shaft bracket 7 serves as a rotation support for the main shaft 6, and the main shaft bracket 7 is fixedly connected to the lower end of the cylinder body 5 by screws; the piston 2 and the turntable 4 are hinged by the center pin 3, the piston shaft is inserted into the piston shaft hole 104 in the cylinder head 1, and the sliding shoe 403 at the lower end of the turntable shaft is inserted into the slide groove 601 at the upper end of the main shaft 6.

[0050] like Figure 4 , Figure 5As shown, a liquid inlet hole 101 and a liquid discharge hole 102 are arranged on the upper end surface of the cylinder head 1, and a liquid inlet waist-shaped hole 105, a liquid discharge waist-shaped hole 106 and a piston shaft hole 104 are arranged on the inner spherical surface of the cylinder head 1; the axis of the piston shaft hole 104 passes through the center of the inner spherical surface of the cylinder head, and the openings of the liquid inlet waist-shaped hole 105 and the liquid discharge waist-shaped hole 106 on the inner spherical surface of the cylinder head 1 are respectively arranged in an annular space perpendicular to the axis of the piston shaft hole 104, and the liquid inlet waist-shaped hole 105 is connected with the liquid inlet hole 101 at the upper end of the cylinder head 1, and the liquid discharge waist-shaped hole 106 is connected with the liquid discharge hole 102 at the upper end of the cylinder head 1. The liquid inlet and discharge control is realized by the rotation of the piston 2. When each working room needs to discharge or inlet liquid, the corresponding working room is connected with the liquid inlet waist-shaped hole 105 or the liquid discharge waist-shaped hole 106. In order to prevent the wear chips generated when the piston shaft rotates in the piston shaft hole 104 from entering between the piston spherical surface and the inner spherical surface of the cylinder head 1, a chip groove 108 is provided on the inner spherical surface of the cylinder head 1, and one end of the chip groove 108 is connected to the liquid inlet waist hole 105; the other end of the chip groove 108 extends along the inner spherical surface of the cylinder head toward the piston shaft hole 104, extending to the vicinity of the orifice of the piston shaft hole 104, the cross-section of the chip groove 108 is U-shaped, and the U-shaped opening is located on the inner spherical surface of the cylinder head 1, and the cross-sectional size (i.e., the depth and width of the liquid drainage groove) is based on the principle of preventing the spherical pump from leaking. The chip groove 108 can be connected to the piston shaft hole 104, or it can be disconnected from the piston shaft hole 104; in this way, the wear chips discharged from the piston shaft hole 104 gather in the chip groove 108, and enter the working room 1001 with the liquid and are discharged from the cylinder with the fluid.

[0051] like Figure 6 , Figure 7 As shown, a turntable shaft through hole that passes through the outside of the cylinder is provided at the lower end of the cylinder body 5, and the size of the hole is to ensure that the turntable shaft of the turntable 4 does not interfere with the cylinder body 5 during the rotation process; a cylinder sleeve 11 is provided at the part where the main shaft 6 and the lower end of the cylinder body 5 cooperate, and a cylinder sleeve hole is provided at the lower end of the cylinder body 5. The cylinder sleeve 11 is placed in the cylinder sleeve hole for upper end rotation support when the main shaft 6 rotates (equivalent to a sliding bearing), the axis of the cylinder sleeve hole and the axis of the cylinder sleeve 11 coincide with the axis of the main shaft 6, and pass through the center of the spherical surface in the cylinder body, the inner diameter of the cylinder sleeve 11 is adapted to the upper end journal of the main shaft 6, the outer diameter of the cylinder sleeve 11 is adapted to the inner diameter of the cylinder sleeve hole, the cylinder sleeve 11 is a cylindrical sleeve, and the material is PEEK, and a through cooling groove is axially provided on the outer cylindrical and inner cylindrical surfaces of the cylinder sleeve 11 for cooling and lubricating the main shaft 6 and the cylinder sleeve 11 with coolant.

[0052] like Figure 13 to Figure 14As shown, the piston 2 has a spherical top surface, two side surfaces at a certain angle and a piston pin seat at the lower part of the two side surfaces. A piston shaft protrudes from the center of the spherical top surface of the piston 2, and the axis of the piston shaft passes through the center of the spherical top surface of the piston; the piston shaft is inserted into the piston shaft hole 104 on the inner spherical surface of the cylinder head 1, and the spherical top surface of the piston and the spherical inner cavity have the same center and form a sealed dynamic fit; the piston pin seat is a semi-cylindrical structure, and a through piston pin hole is provided on the central axis of the semi-cylinder; an opening is provided on the piston pin seat at the lower part of the piston 2 to form a semi-cylindrical groove, and the opening of the piston 2 is located in the middle of the piston pin seat and is perpendicular to the axis of the piston pin hole of the piston pin seat. 2 is adapted to the width of the raised semi-cylinder of the turntable pin seat; in actual production, the piston 2 is coated with a PEEK layer, namely the piston PEEK coating 202, on a stainless steel metal substrate, namely the piston substrate 201, by injection molding, to ensure that the PEEK coating is provided on the piston spherical surface, the outer cylindrical surface and the two side spherical surfaces of the piston pin seat, the two side surfaces and the arc bottom surface of the semi-cylindrical groove of the piston pin seat, and the surface of the piston shaft cylindrical surface, so that the moving part forms a friction pair of steel and PEEK. PEEK material is wear-resistant, high in strength, corrosion-resistant and self-lubricating, is a good wear-resistant material, and has good friction matching performance with stainless steel.

[0053] like Figure 15 to Figure 18 As shown, the turntable 4 has a turntable pin seat corresponding to the piston pin seat at its upper part; a turntable shaft protrudes from the center of the lower end of the turntable 4, the turntable shaft passes through the center of the turntable spherical surface, and a sliding shoe 403 is arranged at the end of the turntable shaft; the outer peripheral surface between the upper and lower end surfaces of the turntable 4 is the turntable spherical surface, the turntable spherical surface and the spherical inner cavity have the same center and are tightly attached to the spherical inner cavity to form a sealed dynamic fit; the two ends of the turntable pin seat are semi-cylindrical grooves, and the middle part is a raised semi-cylinder, A through turntable pin hole is provided at the center of the semi-cylinder; the center pin 3 is inserted into the pin hole formed by the matching of the turntable pin seat and the piston pin seat to form a cylindrical hinge, and a sealed dynamic fit is formed between the matching surfaces of the cylindrical hinge, and a sealed dynamic fit is formed between the two ends of the cylindrical hinge and the spherical inner cavity; the piston 2 and the turntable 5 form a sealed dynamic connection through the cylindrical hinge, and arc inserts made of PEEK material are provided at both ends of the center pin 3, and the shape of the arc matches the shape of the spherical inner cavity. In actual production, the turntable 4 is coated with a layer of PEEK layer, i.e., the turntable PEEK coating 402, on the stainless steel metal substrate, i.e., the turntable substrate 401, by injection molding, to ensure that the surface coating of the two parallel sides where the turntable spherical surface, the sliding shoe 403 and the slide groove 601 are fitted is PEEK, so that the moving part forms a friction pair of steel and PEEK. Both ends of the center pin 3 are arc surfaces, and the cylindrical surface material of the center pin 3 matching the piston pin seat and the turntable pin seat pin hole is PEEK. In order to ensure the strength of the center pin 3, the center pin 3 is coated with a layer of PEEK material on the steel matrix.

[0054] like Figures 8 to 12 As shown, the spindle bracket 7 is fixed to the lower end of the cylinder body 5 by screws, and the spindle 6 is connected to the lower end of the cylinder body 5 through the spindle bracket 7. A rectangular slide groove 601 is arranged on the upper end surface of the spindle 6. The cross-sectional dimension of the slide groove 601 is adapted to the thickness dimension between the two parallel side surfaces of the slide shoe 403 on the turntable 4. After the turntable shaft extends from the lower end of the cylinder body 5, the slide shoe 403 is inserted into the slide groove 601 at the upper end of the spindle 6. The two parallel side surfaces of the slide shoe 403 fit with the two side surfaces of the slide groove 601 to form a sliding fit. The lower end of 6 is provided with a bearing 8 and a sealing ring 9 at the part matching with the main shaft support 7; a main shaft support reflux groove 701 is provided on the wall of the shaft hole of the main shaft support 7, and the main shaft support reflux groove 701 is connected with the cylinder reflux channel 502 on the lower end surface of the cylinder 5, and a main shaft flow hole 602 is provided on the bottom surface of the slide groove 601, and the main shaft flow hole 602 is used to introduce the liquid at the upper end of the main shaft 6 into the gap between the lower end journal of the main shaft 6 and the matching part of the main shaft support 7 (above the sealing ring 9), and then return from the main shaft support reflux groove 701 to the cylinder reflux channel 502; the main shaft support 7 provides support for the rotation of the main shaft, and the lower end of the main shaft 6 is connected to the power mechanism to provide power for the operation of the spherical pump.

[0055] A cylinder head shunt channel 103 and a cylinder head reflux channel 107 are provided on the cylinder head 1, and a cylinder body shunt channel 501 and a cylinder body reflux channel 502 are provided on the cylinder body 5. The upper end of the cylinder head shunt channel 103 and the upper end of the cylinder head reflux channel 107 are respectively connected to the liquid inlet hole 101, and the lower ends of the cylinder head shunt channel 103 and the cylinder head reflux channel 107 are arranged on the lower end flange surface of the cylinder head 1, and the upper ends of the cylinder body shunt channel 501 and the cylinder body reflux channel 502 are arranged on the upper end flange surface of the cylinder body 5. The lower end of the cylinder head shunt channel 103 is connected to the upper end of the cylinder body shunt channel 501, the upper end of the cylinder body reflux channel 502 is connected to the lower end of the cylinder head reflux channel 107, and the lower end of the cylinder body reflux channel 502 is connected to the spindle support reflux groove 701; a throttling step is provided in the liquid inlet hole 101, and the liquid in the liquid inlet hole 101 After being throttled by the throttling surface, the liquid mainly enters the liquid suction working room 1001, and a small part enters the cooling channel to cool the system; the cylinder head diversion channel 103, the cylinder body diversion channel 501, the liquid collecting pool, the spindle support reflux groove 701, the cylinder body reflux channel 502, and the cylinder head reflux channel 107 are connected in sequence to form a spherical pump cooling channel; the inlet of the cooling channel is connected to the liquid inlet hole 101, and the coolant diverted from the liquid inlet hole 101 enters the cavity formed by the lower end of the cylinder body 5, the upper end of the spindle 6 and the upper end of the spindle support 7 through the cylinder head diversion channel 103 and the cylinder body diversion channel 501 in sequence to form a liquid collecting pool, and then flows back to the liquid inlet hole 101 through the spindle support reflux groove 701, the cylinder body reflux channel 502, and the cylinder head reflux channel 107 and is sucked into the working room 1001, thereby forming a cooling circulation system for the spherical pump.

[0056] The axes of the piston shaft hole 104 and the turntable shaft pass through the center of the spherical inner cavity, and the included angles between the axes of the piston shaft hole 104 and the turntable shaft and the axis of the main shaft 6 are both α; the two parallel side surfaces of the sliding shoe 403 are symmetrically arranged on both sides of the turntable axis and are parallel to the axis of the cylindrical hinge; when the main shaft 6 rotates to drive the turntable 4 and the piston 2, the sliding shoe 403 slides back and forth in the sliding groove 601, and the piston 2 and the turntable 4 swing relatively, and the upper end surface of the turntable 4, the two side surfaces of the piston 2 and the spherical inner cavity are symmetrically arranged on both sides of the turntable axis and are parallel to the axis of the cylindrical hinge; when the main shaft 6 rotates to drive the turntable 4 and the piston 2, the sliding shoe 403 slides back and forth in the sliding groove 601, and the piston 2 and the turntable 4 swing relatively. Two working chambers 1001 with alternating volumes are formed between the cavities. When one working chamber 1001 absorbs liquid, the other working chamber 1001 compresses and discharges liquid. When the main shaft 6 rotates one circle, the piston 2 rotates one circle around the axis of the piston shaft hole 104, and the piston 2 swings once relative to the turntable 4 around the axis of the center pin 3. At the same time, the sliding shoe 403 of the turntable 4 swings once in the slide groove 601 in the main shaft 6, and the swing amplitude is 2α. A complete process of absorbing liquid or compressing and discharging liquid occurs in each of the two working chambers 1001.

[0057] like Figure 2 , Figure 3 , Figure 15 to Figure 18 As shown, a static pressure support is arranged between the two parallel sides of the sliding shoe 403 of the turntable 4 and the slide groove 601, and the static pressure support includes a first liquid flow channel 404 and a second liquid flow channel 405 arranged on the turntable 4 and a liquid pressure groove arranged on the two parallel sides of the sliding shoe 403, and the liquid pressure groove includes a first liquid pressure groove 406 and a second liquid pressure groove 407 arranged on the two parallel sides of the sliding shoe 403.

[0058] A first liquid flow channel 404 and a second liquid flow channel 405 are provided in the turntable 4. The first liquid flow channel 404 includes a first liquid flow channel inlet 4041, a first channel and a first liquid flow channel outlet 4042. The first liquid flow channel inlet 4041 is provided on the upper end surface of the turntable 4 and is connected to a working chamber 1001. The first liquid flow channel outlet 4042 is provided on one of the two parallel side surfaces of the sliding shoe 403. The first liquid flow channel inlet 4041 and the first liquid flow channel outlet 4042 are respectively located on a plane parallel to the two parallel side surfaces of the sliding shoe 403 where the axis of the turntable is located (the plane is parallel to the two parallel side surfaces of the sliding shoe 403 and passes through the center of the spherical surface of the turntable). ) on both sides; the second liquid flow channel 405 includes a second liquid flow channel inlet 4051, a second channel and a second liquid flow channel outlet 4052; the second liquid flow channel inlet 4051 is arranged on the upper end surface of the turntable 4 and is connected to another working room 1001, and the second liquid flow channel outlet 4052 is arranged on the other side of the two parallel side surfaces of the sliding shoe 403, and the second liquid flow channel inlet 4051 and the second liquid flow channel outlet 5052 are respectively located on both sides of the plane parallel to the two parallel side surfaces of the sliding shoe 403 where the axis of the turntable is located (the plane is parallel to the two parallel side surfaces of the sliding shoe 403 and passes through the center of the spherical surface of the turntable); the first channel and the second channel are independent of each other in the turntable 4 entity. In order to facilitate processing and reduce the friction between the sliding shoe 403 and the sliding groove 601, a sliding shoe lining 10 is arranged between the two parallel side surfaces of the sliding shoe 403 and the side surface of the sliding groove 601; the sliding groove lining 10 is a PEEK plate, and the sliding groove lining 10 is two pieces, which are respectively placed on both sides of the parallel side surfaces of the sliding shoe 403, one side of the sliding groove lining 10 is in contact with the side surface of the sliding groove 601, and the other side is in contact with one side of the parallel side surface of the sliding shoe 403; the sliding groove lining 10 can be processed as a whole after being fixed to the sliding groove 601. During processing, it is ensured that the two side surfaces of the sliding groove lining 10 are in contact with the two side surfaces of the sliding shoe 403, and the gap is controlled. The two parallel side surfaces of the sliding shoe 403 are in contact with the sliding shoe linings 10 on both sides and slide back and forth in the sliding groove 601 along the surface of the sliding shoe lining 10.

[0059] A first liquid pressure groove 406 and a second liquid pressure groove 407 are respectively arranged on two parallel sides of the sliding shoe 403, the first liquid flow channel outlet 4042 is connected to the first liquid pressure groove 406, and the second liquid flow channel outlet 4052 is connected to the second liquid pressure groove 407; by minimizing the flow area of ​​the first liquid flow channel outlet 4042 and the second liquid flow channel outlet 4052, the liquid flow supported by static pressure is controlled to avoid a significant decrease in volumetric efficiency. The cross-sectional size of the first liquid pressure groove 406 is much larger than the cross-sectional size of the first liquid flow channel outlet 4042, and the cross-sectional size of the second liquid pressure groove 407 is much larger than the cross-sectional size of the second liquid flow channel outlet 4052. The surfaces of the first liquid pressure groove 406 and the second liquid pressure groove 407 are slightly lower than the planes on both sides of the sliding shoe 403, generally less than 1 mm. The diameters of the first liquid flow channel outlet 4042 and the second liquid flow channel outlet 4052 are generally selected to be 0.3 to 3 mm. In order to increase the liquid supporting force of the hydraulic support, the cross-sectional area of ​​the first liquid pressure groove 406 and the second liquid pressure groove 407 is as large as possible, at least 10 times of that of the first liquid pressure groove 406 and the second liquid pressure groove 407.

[0060] When the spherical pump is working, when the working chamber 1001 connected to the first liquid flow channel 404 is at high pressure, the rotor as a whole will be squeezed unidirectionally toward the side of the sliding shoe 403 where the first liquid pressure-bearing groove 406 is provided (the side where the low-pressure working chamber 1001 is located), so that the gap between the side of the sliding shoe 403 where the first liquid pressure-bearing groove 406 is provided and the sliding shoe lining 10 in the matching sliding groove 601 becomes smaller, and at the same time, the gap between the spherical surface of the turntable on the side where the first liquid pressure-bearing groove 406 is provided and the spherical inner cavity is correspondingly reduced, and the friction between the side of the sliding shoe where the first liquid pressure-bearing groove 406 is provided and the sliding shoe lining 10 increases, and the friction between the spherical surface of the turntable and the spherical inner cavity increases; but at this time, The high-pressure liquid in the first liquid flow channel 404 enters the first liquid pressure groove 406, generating a large liquid pressure in the first liquid pressure groove 406. The liquid pressure acts as a static pressure support between the side of the slipper 403 and the slipper lining 10, thereby balancing the unidirectional squeezing of the rotor caused by the high pressure of the working chamber connected to the first liquid flow channel 404, so that the gap between the side of the slipper 403 provided with the first liquid pressure groove 406 and the matching slipper lining 10 increases and returns to the design value, and the gap between the spherical surface of the turntable and the spherical inner cavity also tends to be normal, thereby reducing the friction between the matching surfaces when the spherical pump is running, reducing the power consumption of the spherical pump, and extending the normal service time of the spherical pump.

[0061] Similarly, when the working chamber 1001 connected to the second liquid flow channel 405 is at high pressure, the rotor as a whole will be unidirectionally squeezed toward the side of the sliding shoe 403 where the second liquid pressure groove 407 is provided (the side of the working chamber 1001 at low pressure), so that the gap between the side of the sliding shoe 403 where the second liquid pressure groove 407 is provided and the sliding shoe lining 10 in the matching sliding groove 601 becomes smaller. At the same time, the gap between the spherical surface of the turntable on the side where the second liquid pressure groove 407 is provided and the spherical inner cavity is also correspondingly reduced, and the friction between the side of the sliding shoe where the second liquid pressure groove 407 is provided and the sliding shoe lining 10 is increased, and the turntable ball The friction between the surface and the spherical inner cavity increases; however, since the high-pressure liquid in the second liquid flow channel 405 enters the second liquid pressure-bearing groove 407 at this time, a large liquid pressure is generated in the second liquid pressure-bearing groove 407, and the liquid pressure acts as a static pressure support between the side of the sliding shoe 403 and the sliding shoe lining 10, thereby balancing the unidirectional squeezing force on the rotor caused by the high pressure of the working room connected to the second liquid flow channel 405, so that the gap between the side of the sliding shoe 403 provided with the second liquid pressure-bearing groove 407 and the matching sliding shoe lining 10 increases and returns to the design value, and the gap between the spherical surface of the turntable and the spherical inner cavity also tends to be normal;

[0062] The spherical pump operates cyclically, and the two working chambers 1001 generate high pressure alternately. The first liquid flow channel 404 and the second liquid flow channel 405 are alternately connected to the high-pressure working chamber 1001, continuously balancing the unbalanced force of the rotor during operation and adjusting the gap between the working surfaces, thereby reducing the friction between the mating surfaces during operation of the spherical pump, reducing the power consumption of the spherical pump, and extending the normal service time of the spherical pump.

[0063] In the present invention, the shape of the liquid pressure-bearing groove can be rectangular, circular or other shapes, and is arranged in the center of each of the two parallel side surfaces of the sliding shoe 403; the liquid pressure-bearing groove can also be designed as a multi-stage pressure-bearing groove, that is, a multi-stage liquid pressure-bearing groove, and the multi-stage liquid pressure-bearing groove can also be a multi-stage circular groove or a multi-stage rectangular groove; the multi-stage pressure-bearing groove includes a first multi-stage pressure-bearing groove and a second multi-stage pressure-bearing groove arranged in the center of the two parallel side surfaces of the sliding shoe 403, the first liquid flow channel outlet 4042 is connected to the first multi-stage pressure-bearing groove, and the second liquid flow channel outlet 4052 is connected to the second multi-stage pressure-bearing groove The cross-sectional dimension of the first multi-stage pressure-bearing groove is larger than the cross-sectional dimension of the first liquid flow channel outlet 4042, the cross-sectional dimension of the second multi-stage pressure-bearing groove is larger than the cross-sectional dimension of the second liquid flow channel outlet 4052, and the surfaces of the first multi-stage pressure-bearing groove and the second multi-stage pressure-bearing groove are slightly lower than the planes on both sides of the sliding shoe 403; the first multi-stage pressure-bearing groove and the second multi-stage pressure-bearing groove each include a basic pressure-bearing groove and a plurality of auxiliary pressure-bearing grooves, the basic pressure-bearing groove is arranged at the center of the two parallel sides of the sliding shoe 403, and the first liquid flow channel outlet 4042 is arranged at the bottom of the basic pressure-bearing groove, so that the first The liquid flow channel 404 is connected to the first multi-stage pressure-bearing groove, and the second liquid flow channel outlet 4052 is arranged at the bottom of the basic pressure-bearing groove, so that the second liquid flow channel 405 is connected to the second multi-stage pressure-bearing groove; a plurality of auxiliary pressure-bearing grooves are respectively arranged on the periphery of the basic pressure-bearing groove, and the plurality of auxiliary pressure-bearing grooves are sequentially surrounded by the periphery of the basic pressure-bearing groove; the high-pressure liquid in the basic pressure-bearing groove bears the main liquid pressure, and the high-pressure liquid in the basic pressure-bearing groove partially overflows and leaks into the peripheral adjacent auxiliary pressure-bearing grooves through the matching gap between the side plane of the sliding shoe 403 and the plane of the sliding shoe lining plate 10, and the auxiliary pressure-bearing grooves are filled with liquid. The high-pressure liquid in the auxiliary pressure-bearing groove also plays a role of static pressure support for the sliding shoe 403, increasing the support area. The liquid in the auxiliary pressure-bearing groove partially overflows and leaks into the adjacent auxiliary pressure-bearing grooves on the periphery, from the basic pressure-bearing groove to the auxiliary pressure-bearing grooves of each level in turn. The pressure of the liquid in the multi-stage pressure-bearing grooves gradually decreases, and the amount of liquid gradually decreases. The advantage of the multi-stage pressure-bearing grooves is that the pressure of the basic pressure-bearing groove located in the center of the ring can be guaranteed to be the maximum, and the liquid flow introduced from the high-pressure working chamber can be effectively utilized. The liquid static pressure support force is stable and evenly distributed, and the static pressure support effect is better.

[0064] like Figure 19 to Figure 20 As shown, both the first multi-stage pressure-bearing groove and the second multi-stage pressure-bearing groove are rectangular grooves, that is, the first multi-stage pressure-bearing groove is the first multi-stage rectangular groove 408, and the second multi-stage pressure-bearing groove is the second multi-stage rectangular groove 409. The first multi-stage rectangular groove 408 and the second multi-stage rectangular groove 409 are respectively arranged on two parallel sides of the sliding shoe 403, and the first liquid flow channel outlet 4042 is arranged at the bottom of the basic pressure-bearing groove of the first multi-stage rectangular groove 408, so that the first multi-stage rectangular groove 408 is connected with the first liquid flow channel 404, and the second liquid flow channel outlet 4052 is arranged at the bottom of the basic pressure-bearing groove of the second multi-stage rectangular groove 409, so that the second multi-stage rectangular groove 409 is connected with the second liquid flow channel 405.

[0065] like Figure 20 to Figure 21 As shown, both the first multi-stage pressure-bearing groove and the second multi-stage pressure-bearing groove are circular grooves, that is, the first multi-stage pressure-bearing groove is the first multi-stage circular groove 410, and the second multi-stage pressure-bearing groove is the second multi-stage circular groove 411. The first multi-stage circular groove 410 and the second multi-stage circular groove 410 are respectively arranged on two parallel sides of the sliding shoe 403, and the first liquid flow channel outlet 4042 is arranged at the bottom of the basic pressure-bearing groove of the first multi-stage circular groove 410, so that the first multi-stage circular groove 410 is connected with the first liquid flow channel 404, and the second liquid flow channel outlet 4052 is arranged at the bottom of the basic pressure-bearing groove of the second multi-stage circular groove 411, so that the second multi-stage circular groove 410 is connected with the second liquid flow channel 405.

[0066] In order to simplify the processing technology, the first liquid flow channel 404 and the second liquid flow channel 405 can be composed of several sections of straight channels when processing. When processing the first liquid flow channel 404, first drill a hole downward at a certain angle from the first liquid flow channel inlet 4041 located on the upper end surface of the turntable 4, then drill a hole upward at a certain angle from the lower end of the sliding shoe 403 to communicate with it, then drill and mill the first liquid flow channel outlet hole 4042 from the bottom of the liquid pressure groove on the side of the sliding shoe 403 to connect with the above hole, and finally seal the hole at the lower end of the sliding shoe 403; the second liquid flow channel 405 is processed in the same way, first drill a hole downward at a certain angle from the second liquid flow channel inlet 4051 located on the upper end surface of the turntable 4, then drill and mill the second liquid flow channel outlet hole 4052 from the bottom of the liquid pressure groove on the side of the sliding shoe 403 to connect with the above hole, and finally seal the hole at the lower end of the sliding shoe 403.

Claims

1. A spherical pump with hydrostatic support, comprising: A cylinder body (5), the cylinder body (5) having a hemispherical inner cavity, and a turntable shaft through hole penetrating the outside of the cylinder being provided on the cylinder body (5); A cylinder head (1), the cylinder head (1) having a hemispherical inner cavity, the lower end of the cylinder head (1) being fixedly connected to the upper end of the cylinder body (5) to form a spherical inner cavity, a piston shaft hole (104), a liquid inlet waist-shaped hole (105) and a liquid discharge waist-shaped hole (106) being arranged on the inner spherical surface of the cylinder head (1), the openings of the liquid inlet waist-shaped hole (105) and the liquid discharge waist-shaped hole (106) being respectively arranged in an annular space on the inner spherical surface of the cylinder head (1) perpendicular to the axis of the piston shaft hole (104), the liquid inlet waist-shaped hole (105) being connected to the liquid inlet hole (101) at the upper end of the cylinder head (1), and the liquid discharge waist-shaped hole (106) being connected to the liquid discharge hole (102) at the upper end of the cylinder head (1); A piston (2), the piston (2) having a spherical top surface, two side surfaces at a certain angle and a piston pin seat at the lower part of the two side surfaces, a piston shaft protruding from the center of the spherical top surface of the piston (2), and the axis of the piston shaft passing through the center of the spherical top surface of the piston; the spherical top surface of the piston and the spherical inner cavity have the same center and form a sealed dynamic fit; A turntable (4), the turntable (4) having a turntable pin seat corresponding to the piston pin seat at its upper portion; a turntable shaft protruding from the center of the lower end of the turntable (4), the turntable shaft passing through the center of the turntable spherical surface, and a sliding shoe (403) fixedly arranged at the end of the turntable shaft; the outer peripheral surface between the upper and lower end surfaces of the turntable (4) is the turntable spherical surface, the turntable spherical surface and the spherical inner cavity have the same center and are tightly attached to the spherical inner cavity to form a sealed dynamic fit; A main shaft (6) and a main shaft support (7), wherein the main shaft (6) is connected to the lower end of the cylinder body (5) via the main shaft support (7), the main shaft support (7) is fixedly connected to the lower end of the cylinder body (5), and the main shaft support (7) provides support for the rotation of the main shaft (6); a slide groove (601) is provided on the upper end surface of the main shaft (6); and the lower end of the main shaft (6) is connected to the power mechanism; The axes of the piston shaft hole (104) and the turntable shaft both pass through the center of the spherical inner cavity, and the axis of the piston shaft hole (104) forms an angle with the axis of the main shaft (6); the turntable pin seat and the piston pin seat match to form a cylindrical hinge, and a sealing dynamic fit is formed between the matching surfaces of the cylindrical hinge; after the turntable shaft extends from the lower end of the cylinder body (5), the sliding shoe (403) is inserted into the sliding groove (601) at the upper end of the main shaft (6), and the two parallel side surfaces of the sliding shoe (403) are aligned with the two sides of the sliding groove (601). The side surfaces are attached to each other and form a sliding fit; the two parallel side surfaces of the sliding shoe (403) are symmetrically arranged on both sides of the axis of the rotating disk and are parallel to the axis of the cylindrical hinge; when the main shaft (6) rotates to drive the rotating disk (4) and the piston (2), the sliding shoe (403) slides back and forth in the sliding groove (601), and the piston (2) and the rotating disk (4) swing relative to each other, forming two working chambers (1001) with alternating volumes between the upper end surface of the rotating disk (4), the two side surfaces of the piston (2) and the spherical inner cavity; A static pressure support is provided between two parallel sides of the sliding shoe (403) and the sliding groove (601); the static pressure support comprises a first liquid flow channel (404), a second liquid flow channel (405) and a liquid pressure bearing groove provided on two parallel sides of the sliding shoe (403); the first liquid flow channel inlet (4041) is connected to one of the working chambers (1001), the second liquid flow channel inlet (4051) is connected to the other working chamber (1001), and the first liquid flow channel outlet (4042) and the second liquid flow channel outlet (4052) are respectively connected to the liquid pressure bearing grooves on the two parallel sides of the sliding shoe (403); The first liquid flow channel inlet (4041) and the first liquid flow channel outlet (4042) are respectively located on both sides of a plane parallel to the two parallel sides of the sliding shoe (403) where the axis of the rotating disk (4) is located; the second liquid flow channel inlet (4051) and the second liquid flow channel outlet (4052) are respectively located on both sides of a plane parallel to the two parallel sides of the sliding shoe (403) where the axis of the rotating disk (4) is located; The piston pin seat is a semi-cylindrical structure, with a groove in the middle of the semi-cylinder, and a through piston pin hole is arranged on the central axis of the semi-cylinder; the two ends of the turntable pin seat are semi-cylindrical grooves, the middle is a raised semi-cylinder, and a through turntable pin hole is arranged on the central axis of the semi-cylinder; the center pin (3) is inserted into the pin hole formed by the matching of the turntable pin seat and the piston pin seat to form a cylindrical hinge; the two ends of the center pin (3) are arcs, and the shape of the arc is adapted to the shape of the spherical inner cavity.

2. A spherical pump with hydrostatic support according to claim 1, characterized in that: The inlet (4041) of the first liquid flow channel is arranged on the upper end surface of the turntable (4) and is connected to a working room (1001), and the outlet (4042) of the first liquid flow channel is arranged on one of the two parallel side surfaces of the sliding shoe (403); the inlet (4051) of the second liquid flow channel is arranged on the upper end surface of the turntable (4) and is connected to the other working room (1001), and the outlet (4052) of the second liquid flow channel is arranged on the other of the two parallel side surfaces of the sliding shoe (403).

3. A spherical pump with static pressure support according to claim 1, characterized in that: A sliding shoe lining (10) is provided between the side surfaces of the sliding shoe (403) and the sliding groove (601) that are in contact with each other; two parallel side surfaces of the sliding shoe (403) are in contact with the sliding shoe linings (10) on both sides and slide back and forth along the surfaces of the sliding shoe linings (10) in the sliding groove (601).

4. A spherical pump with hydrostatic support according to claim 1, characterized in that: The liquid pressure-bearing groove comprises a first liquid pressure-bearing groove (406) and a second liquid pressure-bearing groove (407) which are arranged on two parallel sides of the sliding shoe (403); the first liquid flow channel outlet (4042) is connected to the first liquid pressure-bearing groove (406); the second liquid flow channel outlet (4052) is connected to the second liquid pressure-bearing groove (407); the cross-sectional dimension of the first liquid pressure-bearing groove (406) is larger than the cross-sectional dimension of the first liquid flow channel outlet (4042); the cross-sectional dimension of the second liquid pressure-bearing groove (407) is larger than the cross-sectional dimension of the second liquid flow channel outlet (4052); and the surfaces of the first liquid pressure-bearing groove (406) and the second liquid pressure-bearing groove (407) are slightly lower than the planes on both sides of the sliding shoe.

5. A spherical pump with hydrostatic support according to claim 1, characterized in that: The liquid pressure-bearing groove comprises a first multi-stage pressure-bearing groove and a second multi-stage pressure-bearing groove arranged on two parallel sides of the sliding shoe (403); the first liquid flow channel outlet (4042) is connected to the first multi-stage pressure-bearing groove, and the second liquid flow channel outlet (4052) is connected to the second multi-stage pressure-bearing groove; the cross-sectional size of the first multi-stage pressure-bearing groove is larger than the cross-sectional size of the first liquid flow channel outlet (4042); the cross-sectional size of the second multi-stage pressure-bearing groove is larger than the cross-sectional size of the second liquid flow channel outlet (4052); the first multi-stage pressure-bearing groove and The surface of the second multi-stage pressure-bearing groove is slightly lower than the planes on both sides of the sliding shoe (403); the first multi-stage pressure-bearing groove and the second multi-stage pressure-bearing groove each include a basic pressure-bearing groove and a plurality of auxiliary pressure-bearing grooves, the basic pressure-bearing groove is arranged at the center of two parallel sides of the sliding shoe (403), the bottom of the basic pressure-bearing groove is connected to the first liquid flow channel outlet (4042) or the second liquid flow channel outlet (4052), and a plurality of auxiliary pressure-bearing grooves are respectively arranged on the periphery of the basic pressure-bearing groove, and the plurality of auxiliary pressure-bearing grooves are sequentially surrounded by the periphery of the basic pressure-bearing groove.

6. A spherical pump with hydrostatic support according to claim 1, characterized in that: The liquid pressure bearing groove is a circular groove or a rectangular groove.

7. A spherical pump with hydrostatic support according to claim 1, characterized in that: The invention also comprises a cooling channel, wherein a throttling step is arranged in the liquid inlet hole (101), and the liquid in the liquid inlet hole (101) enters the liquid suction working room (1001) and the cooling channel after being throttled by the throttling surface; the inlet of the cooling channel is connected to the liquid inlet hole (101), and the cooling liquid diverted from the liquid inlet hole (101) enters the cavity formed by the lower end of the cylinder body (5), the upper end of the main shaft (6) and the upper end of the main shaft support (7) through the cylinder head diversion channel (103) and the cylinder body diversion channel (501) in sequence to form a liquid collecting pool, and then flows back to the liquid inlet hole (101) through the main shaft support reflux groove (701), the cylinder body reflux channel (502) and the cylinder head reflux channel (107) in sequence and is sucked into the liquid suction working room (1001).

8. A spherical pump with static pressure support according to claim 1, characterized in that: The outer spherical surfaces of the piston (2) and the rotating disk (4), the outer cylindrical surface of the piston shaft, and the semi-cylindrical cylindrical surface of the piston pin seat are provided with a PEEK coating; the material of the sliding shoe liner (10) is PEEK; a cylinder sleeve (11) is provided at the portion where the main shaft (6) and the lower end of the cylinder body (5) match, the cylinder sleeve (11) is made of PEEK material, and cooling grooves penetrating along the axial direction are provided on the inner cylindrical surface and the outer cylindrical surface of the cylinder sleeve (11).

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