Sealing structure for oil pump

Abstract

The utility model relates to the technical field of engines, and discloses a sealing structure for an oil pump, which comprises a pump body and a pump cover positioned on the front side of the pump body, a damping gasket is arranged on one side, close to the pump body, of the pump cover, and a through screw hole II and a limiting hole II are formed in one side, close to the pump body, of the damping gasket. According to the sealing structure for the oil pump, the damping gasket and the pump cover can be fixed to the front side of the pump body through insertion mounting of the first limiting hole, the second limiting hole and the limiting pin, and then the damping gasket and the pump cover can be connected with the pump body more firmly through threaded connection of the first locking screw and the mounting hole; the problem that the oil pump is clamped due to collision during transportation is further solved, the first flange and the second flange can be quickly connected with the sealing gasket due to the fact that the second grooves in the first flange and the second flange are identical with the section of the sealing gasket, and the sealing effect during oil transportation is improved due to the fact that the first flange and the second flange are connected with the sealing gasket in a sealed mode.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to a sealing structure for an oil pump. Background Technology

[0002] Engine oil, also known as motor oil, plays a vital role in lubrication, friction reduction, cooling, sealing, rust and corrosion prevention, and shock absorption. It is often referred to as the "blood" of machinery. An oil pump, on the other hand, pressurizes the engine oil to a certain pressure and forces it onto the moving surfaces of various engine parts, effectively supplying the "blood" to the machinery. Oil pumps are simple in structure and easy to operate; simply connecting the power supply or starting lever is sufficient for normal operation. Furthermore, oil pumps have a strong conveying capacity, effectively transporting media with significant differences in viscosity and properties, such as high-viscosity fluids, high-temperature and high-pressure media, and media containing particulate matter, meeting the liquid transport needs of various industries.

[0003] Chinese Utility Model Patent Publication No. CN 205480132 U discloses an oil pump sealing structure. This oil pump sealing structure directly positions the pump cover into the rotor cavity using fasteners, preventing displacement of the pump body and pump cover and reducing the occurrence of oil pump jamming due to collisions during transportation. In this design, a sealing groove can be set on the pump cover alone, or on the rotor cavity alone, or both the pump cover and the rotor cavity can be set with corresponding sealing grooves. The setting of the sealing ring makes the contact between the pump cover and the rotor cavity fit better, resulting in a better sealing effect. However, the pump cover of this device is installed only by the guiding action of the pump shaft, and then screws need to be aligned with the screw holes for fixing, which is relatively cumbersome. In addition, there is no sealing structure for the oil outlet and oil inlet, which is not conducive to the sealing performance during oil transportation, resulting in poor practicality. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a sealing structure for an oil pump, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is: a sealing structure for an oil pump, including a pump body and a pump cover located on the front side of the pump body. A shock-absorbing pad is provided on the side of the pump cover near the pump body. The shock-absorbing pad has two through-hole screw holes and two limiting holes on the side of the pump body near the pump body. An annular groove is provided on the outer surface of the shock-absorbing pad. A sealing strip is provided on the inner side of the groove. A limiting pin is fixedly installed on the end of the pump body near the pump cover. An installation hole is provided on the end of the pump body near the pump cover. An oil inlet is fixedly installed on the right side of the pump body. A positioning post is fixedly installed on the side of the oil inlet away from the pump body. A locking nut is threadedly connected to the side of the positioning post away from the oil inlet. A sealing assembly is provided on the side of the oil inlet away from the pump body. An oil outlet is provided on the side of the pump body away from the oil inlet.

[0006] The sealing assembly includes a connecting seat, a connecting hole, a first through pipe, a first flange, a second groove, a sealing gasket, a second flange, a second through pipe, a second locking screw, and a second locking nut. The connecting seat is located on the side of the oil inlet away from the pump body. A through connecting hole is opened on the side of the connecting seat away from the oil inlet. The first through pipe is fixedly installed at the end of the connecting seat away from the oil inlet. The first flange is fixedly installed at the end of the first through pipe away from the connecting seat. A sealing gasket and a second flange are located on the side of the first flange away from the connecting seat. The second groove is opened on the outer surface of both the first flange and the second flange. The second through pipe is located on the inner side of the second flange. The second locking screw is located on the side of the second flange away from the first flange. The second locking nut is located on the side of the first flange away from the second flange. The first flange and the second flange are fixedly connected by the second locking screw and the second locking nut.

[0007] Preferably, a base is fixedly installed at the bottom of the pump body, a locking screw is provided on the side of the pump cover away from the pump body, a positioning hole is provided on the side of the pump cover near the pump body, a through-hole is provided on the side of the pump cover near the pump body, a limit hole is provided on the side of the pump cover near the pump body, a drive shaft is provided on the side of the pump body away from the pump cover, a drive wheel is fixedly installed at the end of the drive shaft near the pump cover, a driven wheel is meshed with the bottom of the drive wheel, and a rotating shaft is rotatably installed at the center position of the driven wheel.

[0008] The above technical solution increases the stability of the device during operation by setting a base, and provides guidance for the installation of the pump cover by opening a positioning hole on the side of the pump cover near the pump body, which reduces the difficulty of installation. The meshing connection between the driving wheel and the driven wheel facilitates the transportation of oil from the oil inlet to the oil outlet during operation.

[0009] Preferably, the first limiting hole, the second limiting hole, and the limiting pin are provided in two identical sets. The two sets of the first limiting hole, the second limiting hole, and the limiting pin are symmetrically distributed about the central axis of the shock-absorbing pad. The first limiting hole, the second limiting hole, and the limiting pin have the same cross-section. The two sets of the first limiting hole, the second limiting hole, and the limiting pin are installed by insertion. The first groove is adapted to the sealing strip.

[0010] The above technical solution provides a buffering effect during oil pump operation by setting up a shock-absorbing pad. First, the shock-absorbing pad is fixed to the front of the pump body by inserting the limiting hole two and the limiting pin. Then, the pump cover is installed on the outside of the shock-absorbing pad by inserting the limiting hole one and the limiting pin. Finally, the connection between the locking screw one and the mounting hole is made more secure, further solving the problem of the oil pump getting stuck due to collision during transportation. The sealing strip is adapted to the groove one, which is easy to install on the outside of the shock-absorbing pad, thereby improving the sealing effect of the device.

[0011] Preferably, the sealing strip is made of nitrile rubber sealing material, and the sealing strip is arranged in a ring.

[0012] The above technical solution uses nitrile rubber as the sealing material for the sealing strip. One of the main advantages of nitrile rubber sealing rings is their excellent resistance to oil, fuel, and other petroleum-based fluids. They also have good resistance to water, hydraulic oil, and various solvents, making them suitable for various industrial applications. The production cost is relatively low. The annular distribution reduces the coordination of internal air and improves the sealing effect.

[0013] Preferably, the connecting holes are provided in four identical sets, which are arranged in a ring on the connecting seat, and each set of connecting holes corresponds to a positioning post.

[0014] The above technical solution, by setting the connection holes to correspond one-to-one with the positioning posts, facilitates the quick installation of sealing components and provides a guiding function, thereby improving installation efficiency.

[0015] Preferably, the cross-section of the second groove is the same as that of the sealing gasket, and the sealing gasket is located between flange one and flange two.

[0016] With the above technical solution, when installing the sealing gasket, the sealing gasket can be quickly installed on flange one by first using the cross section of groove two which is the same as the sealing gasket. Then, the sealing gasket can be quickly connected to flange two by using the same groove two on flange two. Finally, flange one and flange two can be quickly fixed by using locking screw two and locking nut two, which reduces the outflow of internal gas and improves the sealing effect.

[0017] Preferably, the sealing assembly is provided in two identical sets, and the two sets of sealing assemblies are stacked on both sides of the pump body.

[0018] By using the above technical solution, and by setting two sets of identical sealing components, located on both sides of the oil inlet and oil outlet respectively, the sealing effect during oil transportation is improved, preventing oil leakage from causing excessive oil consumption in operating equipment and increasing the cost of equipment operation.

[0019] Preferably, the locking screw is threaded to the mounting hole, and the locking screw fixes the pump cover to the pump body through the screw hole.

[0020] With the above technical solution, when installing the pump cover, it can be quickly connected to the pump body through the positioning hole provided on the pump cover. Then, the locking screw is threaded to the mounting hole, which can strengthen the fixation between the pump cover and the pump body.

[0021] Compared with the prior art, this utility model provides a sealing structure for an oil pump, which has the following beneficial effects:

[0022] 1. This sealing structure for an oil pump, through the insertion and installation of the limiting hole two and the limiting pin, allows the shock-absorbing pad to be fixed on the front side of the pump body. Then, through the insertion and installation of the limiting hole one and the limiting pin, the pump cover can be installed on the outside of the shock-absorbing pad. With the threaded connection of the locking screw one to the mounting hole, the connection between the shock-absorbing pad and the pump cover and pump body can be made more secure, further solving the problem of the oil pump getting stuck due to collision during transportation. Furthermore, through the matching of the groove one with the sealing strip, it is easy to install the sealing strip on the outside of the shock-absorbing pad, thereby improving the sealing effect of the device. The setting of the shock-absorbing pad can provide a buffering effect during the operation of the oil pump. The detachable design of the pump cover and the pump body also facilitates the maintenance of the oil pump by the staff in the later stage, making it highly practical.

[0023] 2. The sealing structure used for the oil pump has a groove on flange one with the same cross-section as the sealing gasket. The sealing gasket can be positioned and installed in groove two first. Then, by setting the same groove two on flange two, a quick connection between flange two and the sealing gasket can be achieved. The sealing connection between flange one and flange two and the sealing gasket improves the sealing performance of the oil inlet and outlet, improves the overall sealing effect of the device, prevents oil leakage from causing oil consumption of the operating equipment, and reduces the operating cost of the equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0026] Figure 3 This is a schematic diagram showing the disassembled structure of the pump body and pump cover of this utility model;

[0027] Figure 4 This is a three-dimensional structural diagram of the pump body of this utility model;

[0028] Figure 5 This is a three-dimensional structural diagram of the sealing assembly of this utility model;

[0029] Figure 6 This is a schematic diagram showing the disassembled structure of the pump cover and shock-absorbing pad of this utility model.

[0030] The components are as follows: 1. Pump body; 2. Base; 3. Pump cover; 4. Locking screw one; 5. Positioning hole; 6. Screw hole one; 7. Limiting hole one; 8. Shock-absorbing pad; 9. Screw hole two; 10. Limiting hole two; 11. Groove one; 12. Sealing strip; 13. Drive shaft; 14. Drive wheel; 15. Driven wheel; 16. Rotating shaft; 17. Limiting pin; 18. Mounting hole; 19. Oil inlet; 20. Positioning pin; 21. Locking nut one; 22. Sealing assembly; 2201. Connecting seat; 2202. Connecting hole; 2203. Through pipe one; 2204. Flange one; 2205. Groove two; 2206. Sealing gasket; 2207. Flange two; 2208. Through pipe two; 2209. Locking screw two; 2210. Locking nut two; 23. Oil outlet. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1: As Figure 1-6As shown, this utility model provides a sealing structure for an oil pump. The sealing structure for an oil pump includes a pump body 1 and a pump cover 3 located on the front side of the pump body 1. The pump cover 3 is characterized by: a shock-absorbing pad 8 being provided on the side of the pump cover 3 near the pump body 1; the shock-absorbing pad 8 having a through-hole 9 and a limiting hole 10 on the side of the pump body 1; an annular groove 11 being provided on the outer surface of the shock-absorbing pad 8; a sealing strip 12 being provided on the inner side of the groove 11; a limiting pin 17 being fixedly installed on the end of the pump body 1 near the pump cover 3; an installation hole 18 being provided on the end of the pump body 1 near the pump cover 3; an oil inlet 19 being fixedly installed on the right side of the pump body 1; a positioning pin 20 being fixedly installed on the side of the oil inlet 19 away from the pump body 1; a locking nut 21 being threadedly connected on the side of the positioning pin 20 away from the oil inlet 19; a sealing component 22 being provided on the side of the oil inlet 19 away from the pump body 1; and an oil outlet 23 being provided on the side of the pump body 1 away from the oil inlet 19.

[0033] The sealing assembly 22 includes a connecting seat 2201, a connecting hole 2202, a first through pipe 2203, a first flange 2204, a second groove 2205, a sealing gasket 2206, a second flange 2207, a second through pipe 2208, a second locking screw 2209, and a second locking nut 2210. The connecting seat 2201 is located on the side of the oil inlet 19 away from the pump body 1. A through connecting hole 2202 is formed on the side of the connecting seat 2201 away from the oil inlet 19. A first through pipe 2203 is fixedly installed at the end of the connecting seat 2201 away from the oil inlet 19. A second through pipe 2203 is fixedly installed at the end of the first through pipe 2203 away from the connecting seat 2201. Flange 1 2204 has a sealing gasket 2206 and flange 2207 on the side away from the connecting seat 2201. The outer surfaces of flange 1 2204 and flange 2207 are both provided with groove 2205. A through pipe 2208 is provided on the inner side of flange 2207. A locking screw 2209 is provided on the side of flange 2207 away from flange 1 2204. A locking nut 2210 is provided on the side of flange 1 2204 away from flange 2207. Flange 1 2204 and flange 2207 are fixedly connected by locking screw 2209 and locking nut 2210.

[0034] Specifically, a base 2 is fixedly installed at the bottom of the pump body 1. A locking screw 4 is provided on the side of the pump cover 3 away from the pump body 1. A positioning hole 5 is provided on the side of the pump cover 3 near the pump body 1. A through-hole screw hole 6 is provided on the side of the pump cover 3 near the pump body 1. A limit hole 7 is provided on the side of the pump cover 3 near the pump body 1. A drive shaft 13 is provided on the side of the pump body 1 away from the pump cover 3. A drive wheel 14 is fixedly installed at the end of the drive shaft 13 near the pump cover 3. A driven wheel 15 is meshed with the bottom of the drive wheel 14. A rotating shaft 16 is rotatably installed at the center of the driven wheel 15. The advantages are that the base 2 is provided to increase the stability of the device during operation. The positioning hole 5 on the side of the pump cover 3 near the pump body 1 facilitates the installation of the pump cover 3 and provides guidance, reducing the installation difficulty. The meshing connection between the drive wheel 14 and the driven wheel 15 facilitates the transportation of oil from the oil inlet 19 to the oil outlet 23 during operation.

[0035] Specifically, two sets of identical limiting holes 1-7, 10-10, and 17 are provided. These two sets of limiting holes 1-7, 10-10, and 17 are symmetrically distributed about the central axis of the damping pad 8. The cross-sections of the limiting holes 1-7, 10-10, and 17 are identical. The two sets of limiting holes 1-7, 10-17, and 17 are installed by insertion. The groove 11 is compatible with the sealing strip 12. The advantage is that by providing the damping pad 8, a buffering effect can be easily achieved during oil pump operation. This is achieved through the insertion of the limiting holes 10 and 17. The device can fix the shock-absorbing pad 8 to the front side of the pump body 1. Then, by inserting the limiting hole 7 and the limiting pin 17, the pump cover 3 can be installed on the outside of the shock-absorbing pad 8. With the locking screw 4 and the threaded connection of the mounting hole 18, the connection between the shock-absorbing pad 8 and the pump cover 3 and the pump body 1 can be made more secure, which further solves the problem of the oil pump getting stuck due to collision during transportation. Furthermore, by matching the groove 11 with the sealing strip 12, the sealing strip 12 can be easily installed on the outside of the shock-absorbing pad 8, thereby improving the sealing effect of the device.

[0036] Specifically, the sealing strip 12 is made of nitrile rubber. The sealing strip 12 is arranged in a ring. The advantage is that by setting the sealing strip 12 to be made of nitrile rubber, one of the main advantages of nitrile rubber sealing rings is its excellent resistance to oil, fuel and other petroleum-based fluids. It also has good resistance to water, hydraulic oil and various solvents, making it suitable for various industrial applications. The production cost is relatively low. The ring arrangement reduces the coordination of internal air and improves the sealing effect.

[0037] Example 2: Figure 2-6 As shown, this is an improvement on the previous embodiment.

[0038] Specifically, the connection holes 2202 are provided in four identical sets. The four sets of connection holes 2202 are arranged in a ring on the connecting seat 2201. The four sets of connection holes 2202 correspond one-to-one with the positioning posts 20. The advantage is that by setting the connection holes 2202 to correspond one-to-one with the positioning posts 20, the sealing component 22 can be installed quickly and easily, and it also plays a guiding role, thus improving the installation efficiency.

[0039] Specifically, the cross-section of groove 2205 is the same as that of gasket 2206. Gasket 2206 is located between flange 1 2204 and flange 2 2207. The advantage is that when installing gasket 2206, it can be quickly installed on flange 1 2204 by first using groove 2205, which has the same cross-section as gasket 2206. Then, gasket 2206 can be quickly connected to flange 2 2207 by using groove 2205 on flange 2 2207. Finally, flange 1 2204 and flange 2 2207 can be quickly fixed by locking screw 2209 and locking nut 2210, which reduces the outflow of internal gas and improves the sealing effect.

[0040] Specifically, the sealing assembly 22 is provided in two identical sets, which are stacked on both sides of the pump body 1. The advantage is that by setting two identical sealing assemblies 22 and placing them on both sides of the oil inlet 19 and the oil outlet 23 respectively, the sealing effect during oil transportation is improved, preventing oil leakage from causing oil consumption of the operating equipment and increasing the cost of equipment operation.

[0041] Specifically, the locking screw 4 is threaded to the mounting hole 18. The locking screw 4 fixes the pump cover 3 to the pump body 1 through the screw hole 6. The advantage is that when installing the pump cover 3, it can be quickly connected to the pump body 1 through the positioning hole 5 provided on the pump cover 3. Then, the threaded connection between the locking screw 4 and the mounting hole 18 can strengthen the fixation between the pump cover 3 and the pump body 1.

[0042] Working principle: During use, the damping pad 8 provides a buffering effect during oil pump operation. First, the damping pad 8 is fixed to the front of the pump body 1 by inserting it into the limiting hole 10 and the limiting pin 17. Then, the pump cover 3 is installed on the outside of the damping pad 8 by inserting it into the limiting hole 7 and the limiting pin 17. Finally, the locking screw 4 is threaded into the mounting hole 18, ensuring a more secure connection between the damping pad 8, the pump cover 3, and the pump body 1. This further solves the problem of the oil pump getting stuck due to collisions during transportation. Finally, the groove 11 and the sealing... The sealing strip 12 is compatible, making it easy to install the sealing strip 12 on the outside of the shock-absorbing pad 8, thereby improving the sealing effect of the device. By setting the connection hole 2202 to correspond one-to-one with the positioning post 20, the sealing assembly 22 can be quickly installed and serves as a guide, improving installation efficiency. When installing the sealing gasket 2206, the sealing gasket 2206 can be quickly installed on the flange 2204 first, using the same groove 2205 on the flange 2207. Then, the sealing gasket 2206 can be quickly installed using the same groove 2205 on the flange 2207. 6 is connected to flange 2207, and then flange 2204 and flange 2207 can be quickly fixed by locking screw 2209 and locking nut 2210, which reduces the outflow of internal gas and improves the sealing effect. By setting two sets of identical sealing components 22, located on both sides of oil inlet 19 and oil outlet 23 respectively, the sealing effect during oil transportation is improved, preventing oil leakage from increasing the oil consumption of operating equipment and increasing the operating cost of equipment. By setting the sealing strip 12 to be made of nitrile rubber sealing material, one of the main advantages of nitrile rubber sealing rings is... It exhibits excellent resistance to oil, fuel, and other petroleum-based fluids, as well as good resistance to water, hydraulic oil, and various solvents, making it suitable for various industrial applications. Its production cost is relatively low. Through annular distribution, it reduces the coordination of internal air and improves the sealing effect. During operation, the engine drives the drive shaft 13 to rotate, thereby driving the drive wheel 14 to rotate. Through the meshing connection between the drive wheel 14 and the driven wheel 15, the driven wheel 15 moves. When the engine oil enters from the oil inlet 19, it is transported to the oil outlet 23 for discharge with the cooperation of the drive wheel 14 and the driven wheel 15.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for an oil pump, comprising a pump body (1) and a pump cover (3) located on the front side of the pump body (1), characterized in that: A shock-absorbing pad (8) is provided on the side of the pump cover (3) near the pump body (1). The shock-absorbing pad (8) has a through-hole (9) and a limiting hole (10) on the side of the pump body (1). An annular groove (11) is provided on the outer surface of the shock-absorbing pad (8). A sealing strip (12) is provided on the inner side of the groove (11). A limiting pin (17) is fixedly installed on one end of the pump body (1) near the pump cover (3). One end is provided with an installation hole (18), and an oil inlet (19) is fixedly installed on the right side of the pump body (1). A positioning column (20) is fixedly installed on the side of the oil inlet (19) away from the pump body (1). A locking nut (21) is threadedly connected on the side of the positioning column (20) away from the oil inlet (19). A sealing component (22) is provided on the side of the oil inlet (19) away from the pump body (1). An oil outlet (23) is provided on the side of the pump body (1) away from the oil inlet (19). The sealing assembly (22) includes a connecting seat (2201), a connecting hole (2202), a first through pipe (2203), a first flange (2204), a second groove (2205), a sealing gasket (2206), a second flange (2207), a second through pipe (2208), a second locking screw (2209), and a second locking nut (2210). The connecting seat (2201) is provided on the side of the oil inlet (19) away from the pump body (1). A through connecting hole (2202) is opened on the side of the connecting seat (2201) away from the oil inlet (19). The first through pipe (2203) is fixedly installed at one end of the connecting seat (2201) away from the oil inlet (19). The first through pipe (2203) is fixedly installed at one end of the first through pipe (2203) away from the connecting seat (2201). There is a flange one (2204), on the side of flange one (2204) away from the connecting seat (2201) there is a sealing gasket (2206) and a flange two (2207). The outer surfaces of flange one (2204) and flange two (2207) are both provided with groove two (2205). The inner side of flange two (2207) is provided with a through pipe two (2208). The side of flange two (2207) away from flange one (2204) is provided with a locking screw two (2209). The side of flange one (2204) away from flange two (2207) is provided with a locking nut two (2210). Flange one (2204) and flange two (2207) are fixedly connected by locking screw two (2209) and locking nut two (2210).

2. The sealing structure for an oil pump according to claim 1, characterized in that: A base (2) is fixedly installed at the bottom of the pump body (1). A locking screw (4) is provided on the side of the pump cover (3) away from the pump body (1). A positioning hole (5) is provided on the side of the pump cover (3) close to the pump body (1). A through screw hole (6) is provided on the side of the pump cover (3) close to the pump body (1). A limit hole (7) is provided on the side of the pump body (1) away from the pump cover (3). A drive shaft (13) is provided on the side of the pump body (1) away from the pump cover (3). A drive wheel (14) is fixedly installed at one end of the drive shaft (13) close to the pump cover (3). A driven wheel (15) is meshed at the bottom of the drive wheel (14). A rotating shaft (16) is rotatably installed at the center of the driven wheel (15).

3. A sealing structure for an oil pump according to claim 2, characterized in that: The first limiting hole (7), the second limiting hole (10), and the limiting pin (17) are provided in two identical sets. The two sets of the first limiting hole (7), the second limiting hole (10), and the limiting pin (17) are symmetrically distributed about the central axis of the damping pad (8). The first limiting hole (7), the second limiting hole (10), and the limiting pin (17) have the same cross-section. The two sets of the first limiting hole (7), the second limiting hole (10), and the limiting pin (17) are installed by insertion. The first groove (11) is adapted to the sealing strip (12).

4. A sealing structure for an oil pump according to claim 1, characterized in that: The sealing strip (12) is made of nitrile rubber sealing material, and the sealing strip (12) is distributed in a ring.

5. A sealing structure for an oil pump according to claim 1, characterized in that: The connecting holes (2202) are provided in four identical sets. The four sets of connecting holes (2202) are arranged in a ring on the connecting seat (2201). The four sets of connecting holes (2202) correspond one-to-one with the positioning post (20).

6. A sealing structure for an oil pump according to claim 1, characterized in that: The cross-section of the second groove (2205) is the same as that of the sealing gasket (2206), and the sealing gasket (2206) is located between flange one (2204) and flange two (2207).

7. A sealing structure for an oil pump according to claim 1, characterized in that: The sealing assembly (22) is provided in two identical sets, and the two sets of sealing assemblies (22) are stacked on both sides of the pump body (1).

8. A sealing structure for an oil pump according to claim 2, characterized in that: The locking screw (4) is threaded to the mounting hole (18), and the locking screw (4) fixes the pump cover (3) to the pump body (1) through the screw hole (6).

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