Axial piston pump with a sealing arrangement

Abstract

The utility model discloses an axial plunger pump with sealing structure, including pump body and pump shaft, the lateral wall of pump body one end is connected in the pump shaft rotation, the outer fixed surface of pump body is close to the one end of pump shaft and is installed with fixed plate, the one end of pump body is away from the communication of liquid inlet pipe and liquid outlet pipe of pump shaft. The utility model discloses, through setting pump body, liquid inlet pipe, liquid outlet pipe, liquid pipe, connecting sleeve, connecting block, sealing washer and sealing washer and other components's cooperation, realized the sealing function of promotion liquid inlet pipe and liquid outlet pipe and liquid pipe connection, improved the connection mode between liquid inlet pipe and liquid outlet pipe and liquid pipe in the prior art, thereby promoted the sealing of the junction between liquid inlet pipe and liquid outlet pipe and liquid pipe, closed to sealing washer simultaneously, prevent sealing washer oxidation damage, avoid the junction of pipeline and take place the situation of oil leakage, guarantee the normal use of axial plunger pump, promoted the practicality of axial plunger pump.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic pump technology, and in particular to an axial piston pump with a sealing structure. Background Technology

[0002] A piston pump is an important component of a hydraulic system. It relies on the reciprocating motion of a piston within a cylinder to change the volume of the sealed working chamber, thus achieving oil suction and pressure. Piston pumps offer advantages such as high rated pressure, compact structure, high efficiency, and convenient flow rate adjustment. They are widely used in high-pressure, high-flow-rate applications where flow rate regulation is required, such as hydraulic presses, construction machinery, and ships. The axial piston pump is one type of piston pump among many.

[0003] In existing technology, axial piston pumps are connected to pipes on both their inlet and outlet pipes during use. However, the connection between the inlet and outlet pipes of existing axial piston pumps is simply a matter of connecting them to the pipes, placing a gasket between them, and then fixing them in place. This method results in poor sealing at the connection between the inlet and outlet pipes and the pipes, and the gaskets are exposed, making them prone to oxidation and damage. This makes the pipe connections susceptible to oil leakage, thus affecting the normal operation of the axial piston pump and reducing its practicality. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an axial piston pump with a sealing structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an axial piston pump with a sealing structure, comprising a pump body and a pump shaft, wherein the pump shaft is rotatably connected to the side wall of one end of the pump body, a fixing plate is fixedly installed on the outer surface of the pump body near the pump shaft, an inlet pipe and an outlet pipe are connected to the end of the pump body away from the pump shaft, and a flow pipe is connected to the end of the inlet pipe and the outlet pipe away from the pump body, and a connecting pipe is fixedly installed on the end of each of the two flow pipes near the pump body, a connecting sleeve is sleeved on the outer surface of the inlet pipe and the outlet pipe, a connecting block is sleeved on the outer surface of each of the two flow pipes, an installation sleeve is fixedly installed on the side wall of the connecting sleeve and the connecting block, a sealing ring is sleeved on the outer surface of the connecting pipe, a sealing gasket is fixedly installed on the end of the sealing ring near the flow pipe, and a protective component is provided on the outer surface of the pump body.

[0006] As a further description of the above technical solution:

[0007] The inner walls of the inlet pipe and outlet pipe near the liquid passage pipe are provided with connecting grooves. The two connecting pipes are respectively inserted into the corresponding connecting grooves, and the outer surface of the sealing ring is slidably connected to the inner wall of the connecting groove.

[0008] As a further description of the above technical solution:

[0009] The mounting sleeves on the sidewalls of the two connecting sleeves are respectively fitted onto the outer surfaces of the inlet pipe and the outlet pipe. The mounting sleeves on the sidewalls of the two connecting blocks are respectively fitted onto the outer surfaces of the corresponding liquid-passing pipes. Fixing blocks are fixedly installed on the outer surfaces of the inlet pipe, the outlet pipe, and the liquid-passing pipes. Fixing grooves that fit the fixing blocks are opened on the outer surfaces of the four mounting sleeves. Positioning bolts are threaded onto the outer surfaces of the four mounting sleeves. The four sets of positioning bolts penetrate the outer surfaces of the mounting sleeves and are respectively inserted into the outer surfaces of the inlet pipe, the outlet pipe, and the two liquid-passing pipes.

[0010] As a further description of the above technical solution:

[0011] The connecting block is slidably connected to the inner wall of the connecting sleeve. The two side walls of the sealing gasket are respectively attached to the inner wall of the connecting sleeve and the side wall of the connecting block. A limiting block is fixedly installed on the inner wall of the connecting sleeve. A limiting groove adapted to the limiting block is opened on the outer surface of the connecting block.

[0012] As a further description of the above technical solution:

[0013] The outer surface of the connecting sleeve is threaded with four connecting bolts, which penetrate the outer surface of the connecting sleeve and are inserted into the outer surface of the connecting block.

[0014] As a further description of the above technical solution:

[0015] The protective assembly includes an installation cylinder and a positioning ring. The installation cylinder is sleeved on the outer surface of the pump body. The positioning ring is fixedly installed at one end of the installation cylinder near the fixing plate. A positioning block is fixedly installed on the side wall of the fixing plate near the positioning ring. Several rubber buffer rings are fixedly installed on the outer surface of the installation cylinder.

[0016] As a further description of the above technical solution:

[0017] The side wall of the positioning ring is provided with a positioning groove that matches the positioning block. The outer surface of the mounting cylinder away from the positioning ring is threaded with a mounting bolt. The mounting bolt passes through the outer surface of the mounting cylinder and is inserted into the outer surface of the pump body.

[0018] This utility model has the following beneficial effects:

[0019] 1. Compared with existing technologies, this axial piston pump with a sealing structure improves the sealing performance of the connection between the inlet and outlet pipes and the flow pipe by coordinating components such as the pump body, pump shaft, fixed plate, inlet pipe, outlet pipe, flow pipe, connecting pipe, connecting groove, connecting sleeve, connecting block, mounting sleeve, fixed block, positioning bolt, limit block, connecting bolt, sealing ring, and sealing gasket. This improves the connection method between the inlet and outlet pipes and the flow pipe in existing technologies, thereby enhancing the sealing performance at the connection point. Simultaneously, it seals the gasket to prevent oxidation and damage, avoiding oil leakage at the pipe connection point, ensuring the normal operation of the axial piston pump, and improving its practicality.

[0020] 2. Compared with existing technologies, this axial piston pump with a sealing structure achieves the function of protecting the pump body by setting up components such as mounting cylinder, positioning ring, positioning block, rubber buffer ring and mounting bolt. By setting several rubber buffer rings on the outer surface of the pump body, when the pump body collides with the outside, the rubber buffer rings buffer the force generated by the collision, reduce the impact of the collision on the pump body, avoid affecting the normal use of the axial piston pump, and improve the safety of the axial piston pump. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of an axial piston pump with a sealing structure proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the inlet pipe structure of an axial plunger pump with a sealing structure proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the connecting sleeve structure of an axial piston pump with a sealing structure proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the connecting block structure of an axial piston pump with a sealing structure proposed in this utility model;

[0025] Figure 5 This is a schematic diagram of the protective component structure of an axial piston pump with a sealing structure proposed in this utility model.

[0026] Legend:

[0027] 1. Pump body; 2. Pump shaft; 3. Fixing plate; 4. Inlet pipe; 5. Outlet pipe; 6. Fluid passage pipe; 7. Connecting pipe; 8. Connecting groove; 9. Connecting sleeve; 10. Connecting block; 11. Mounting sleeve; 12. Fixing block; 13. Positioning bolt; 14. Limiting block; 15. Connecting bolt; 16. Sealing ring; 17. Sealing gasket; 18. Mounting cylinder; 19. Positioning ring; 20. Positioning block; 21. Rubber buffer ring; 22. Mounting bolt. Detailed Implementation

[0028] 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.

[0029] Reference Figures 1 to 5 This utility model provides an axial piston pump with a sealing structure, comprising a pump body 1 and a pump shaft 2. The pump shaft 2 is rotatably connected to the side wall of one end of the pump body 1. A fixing plate 3 is fixedly installed on the outer surface of the pump body 1 near the pump shaft 2. An inlet pipe 4 and an outlet pipe 5 are connected to the end of the pump body 1 away from the pump shaft 2. A liquid passage pipe 6 is connected to the end of the inlet pipe 4 and the outlet pipe 5 away from the pump body 1. A connecting pipe 7 is fixedly installed on the end of the two liquid passage pipes 6 near the pump body 1. A connecting groove 8 is opened on the inner wall of the end of the inlet pipe 4 and the outlet pipe 5 near the liquid passage pipe 6. The two connecting pipes 7 are respectively inserted into the corresponding connecting groove 8. A connecting sleeve 9 is sleeved on the outer surface of the inlet pipe 4 and the outlet pipe 5. A connecting block 10 is sleeved on the outer surface of the two liquid passage pipes 6. The connecting block 10 is slidably connected to the inner wall of the connecting sleeve 9.

[0030] To facilitate the connection of the two liquid-passing pipes 6 to the inlet pipe 4 and the outlet pipe 5 and to seal the connection, mounting sleeves 11 are fixedly installed on the side walls of the connecting sleeve 9 and the connecting block 10. The mounting sleeves 11 on the side walls of the two connecting sleeves 9 are respectively fitted onto the outer surfaces of the inlet pipe 4 and the outlet pipe 5. The mounting sleeves 11 on the side walls of the two connecting blocks 10 are respectively fitted onto the outer surfaces of the corresponding liquid-passing pipes 6. Fixing blocks 12 are fixedly installed on the outer surfaces of the inlet pipe 4, the outlet pipe 5, and the liquid-passing pipe 6. Fixing grooves adapted to the fixing blocks 12 are formed on the outer surfaces of the four mounting sleeves 11. Positioning bolts 13 are threaded onto the outer surfaces of the four mounting sleeves 11. Limiting blocks 14 are fixedly installed on the inner wall of the connecting sleeve 9. The outer surface of the connecting block 10 is provided with a limiting groove that matches the limiting block 14. Four sets of positioning bolts 13 all penetrate the outer surface of the mounting sleeve 11 and are respectively inserted into the outer surface of the inlet pipe 4, the outlet pipe 5 and the two liquid passage pipes 6. The outer surface of the connecting sleeve 9 is threaded with four connecting bolts 15. The connecting bolts 15 penetrate the outer surface of the connecting sleeve 9 and are inserted into the outer surface of the connecting block 10. The outer surface of the connecting pipe 7 is fitted with a sealing ring 16. The outer surface of the sealing ring 16 is slidably connected to the inner wall of the connecting groove 8. A sealing gasket 17 is fixedly installed at one end of the sealing ring 16 near the liquid passage pipe 6. The two side walls of the sealing gasket 17 are respectively attached to the inner wall of the connecting sleeve 9 and the side wall of the connecting block 10.

[0031] By configuring the pump body 1, pump shaft 2, fixing plate 3, inlet pipe 4, outlet pipe 5, through pipe 6, connecting pipe 7, connecting groove 8, connecting sleeve 9, connecting block 10, mounting sleeve 11, fixing block 12, positioning bolt 13, limit block 14, connecting bolt 15, sealing ring 16, and sealing gasket 17, the sealing performance of the connection between the inlet pipe 4 and outlet pipe 5 and through pipe 6 is improved. This improves the connection method between the inlet pipe 4 and outlet pipe 5 and through pipe 6 in the existing technology, thereby enhancing the sealing performance at the connection between the inlet pipe 4 and outlet pipe 5 and through pipe 6. At the same time, the sealing gasket 17 is sealed to prevent oxidation and damage, avoid oil leakage at the pipe connection, ensure the normal use of the axial piston pump, and improve the practicality of the axial piston pump.

[0032] The outer surface of the pump body 1 is provided with a protective component, which includes a mounting cylinder 18 and a positioning ring 19. The mounting cylinder 18 is sleeved on the outer surface of the pump body 1. The positioning ring 19 is fixedly installed at one end of the mounting cylinder 18 near the fixing plate 3. A positioning block 20 is fixedly installed on the side wall of the fixing plate 3 near the positioning ring 19. The side wall of the positioning ring 19 has a positioning groove that matches the positioning block 20. Several rubber buffer rings 21 are fixedly installed on the outer surface of the mounting cylinder 18. A mounting bolt 22 is threadedly connected to the outer surface of the mounting cylinder 18 away from the positioning ring 19. The mounting bolt 22 passes through the outer surface of the mounting cylinder 18 and is inserted into the outer surface of the pump body 1.

[0033] By setting the mounting cylinder 18, positioning ring 19, positioning block 20, rubber buffer ring 21 and mounting bolt 22, the pump body 1 of the axial piston pump is protected. By setting several rubber buffer rings 21 on the outer surface of the pump body 1, when the pump body 1 collides with the outside world, the rubber buffer rings 21 buffer the force generated by the collision, reduce the impact of the collision on the pump body 1, avoid affecting the normal use of the axial piston pump, and improve the safety of the axial piston pump.

[0034] Working principle: Before using the axial piston pump, first bring the mounting cylinder 18 close to the pump body 1 so that the mounting cylinder 18 is aligned with the pump body 1 and the positioning block 20 is aligned with the positioning groove. Then move the mounting cylinder 18 to fit onto the outer surface of the pump body 1. When the positioning ring 19 contacts the side wall of the fixing plate 3, the positioning block 20 slides into the interior of the positioning groove, restricting the mounting cylinder 18 and preventing the mounting cylinder 18 from rotating on the outer surface of the pump body 1. Then tighten the mounting bolt 22 so that the mounting bolt 22 passes through the outer surface of the mounting cylinder 18 and rotates into the outer surface of the pump body 1 to fix the mounting cylinder 18, thereby fixing the rubber buffer ring 21 to the outer surface of the pump body 1.

[0035] After the rubber buffer ring 21 is fixed, the pump body 1 is installed through the pump shaft 2 and the fixing plate 3. After the pump body 1 is installed, the two connecting sleeves 9 are respectively fitted onto the outer surfaces of the inlet pipe 4 and the outlet pipe 5, and the two connecting blocks 10 are fitted onto the outer surfaces of the two liquid passage pipes 6. The mounting sleeves 11 on the side walls of the two connecting sleeves 9 are also respectively fitted onto the outer surfaces of the inlet pipe 4 and the outlet pipe 5, and the mounting sleeves 11 on the side walls of the two connecting blocks 10 are respectively fitted onto the outer surfaces of the two liquid passage pipes 6. The four fixing blocks 12 slide into the corresponding fixing grooves to restrict the connecting sleeves 9 and the connecting blocks 10. Then, the positioning bolts 13 on the four mounting sleeves 11 are turned so that the four sets of positioning bolts 13 penetrate through the outer surface of the mounting sleeves 11 and are respectively turned into the outer surfaces of the inlet pipe 4, the outlet pipe 5 and the liquid passage pipe 6, so that the two connecting sleeves 9 and the outlet pipe 5 are respectively fitted onto the outer surfaces of the two liquid passage pipes 6. The connecting sleeves 9 are fixed to the outer surfaces of the inlet pipe 4 and the outlet pipe 5, respectively. The two connecting blocks 10 are fixed to the outer surfaces of the two liquid passage pipes 6, respectively. Then, the two sealing rings 16 are respectively fitted onto the outer surfaces of the two connecting pipes 7. Next, the two liquid passage pipes 6 are brought close to the inlet pipe 4 and the outlet pipe 5, respectively. The two connecting blocks 10 are aligned with the corresponding connecting sleeves 9. The two liquid passage pipes 6 are moved so that the two connecting blocks 10 slide into the corresponding connecting sleeves 9. The limiting block 14 slides into the limiting groove. The connecting pipe 7 is inserted into the connecting groove 8. Then, the connecting bolts 15 on the outer surfaces of the two connecting sleeves 9 are turned. After the connecting bolts 15 penetrate the outer surface of the connecting sleeves 9 and turn into the outer surface of the connecting blocks 10, the two connecting blocks 10 are fixed, thereby completing the connection between the inlet pipe 4 and the outlet pipe 5 and the two liquid passage pipes 6.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An axial piston pump with a sealing structure, comprising a pump body (1) and a pump shaft (2), characterized in that: The pump shaft (2) is rotatably connected to the side wall of one end of the pump body (1). A fixing plate (3) is fixedly installed on the outer surface of the pump body (1) near the pump shaft (2). An inlet pipe (4) and an outlet pipe (5) are connected to the end of the pump body (1) away from the pump shaft (2). A liquid passage pipe (6) is connected to the end of both the inlet pipe (4) and the outlet pipe (5) away from the pump body (1). A connecting pipe (7) is fixedly installed at the end of each of the two liquid passage pipes (6) near the pump body (1). The outer surfaces of the inlet pipe (4) and outlet pipe (5) are fitted with connecting sleeves (9), and the outer surfaces of the two liquid passage pipes (6) are fitted with connecting blocks (10). The side walls of the connecting sleeves (9) and connecting blocks (10) are fixedly fitted with mounting sleeves (11). The outer surface of the connecting pipe (7) is fitted with a sealing ring (16). The end of the sealing ring (16) near the liquid passage pipe (6) is fixedly fitted with a sealing gasket (17). The outer surface of the pump body (1) is provided with protective components.

2. An axial piston pump with a sealing structure according to claim 1, characterized in that: The inner walls of the inlet pipe (4) and outlet pipe (5) near the end of the liquid passage pipe (6) are provided with connecting grooves (8). The two connecting pipes (7) are respectively inserted into the corresponding connecting grooves (8), and the outer surface of the sealing ring (16) is slidably connected to the inner wall of the connecting groove (8).

3. An axial piston pump with a sealing structure according to claim 1, characterized in that: The mounting sleeves (11) on the sidewalls of the two connecting sleeves (9) are respectively fitted onto the outer surfaces of the inlet pipe (4) and the outlet pipe (5). The mounting sleeves (11) on the sidewalls of the two connecting blocks (10) are respectively fitted onto the outer surfaces of the corresponding liquid-passing pipes (6). Fixing blocks (12) are fixedly installed on the outer surfaces of the inlet pipe (4), the outlet pipe (5) and the liquid-passing pipe (6). Fixing grooves that are compatible with fixing blocks (12) are opened on the outer surfaces of the four mounting sleeves (11). Positioning bolts (13) are threaded onto the outer surfaces of the four mounting sleeves (11). The four sets of positioning bolts (13) penetrate the outer surfaces of the mounting sleeves (11) and are respectively inserted into the outer surfaces of the inlet pipe (4), the outlet pipe (5) and the two liquid-passing pipes (6).

4. An axial piston pump with a sealing structure according to claim 1, characterized in that: The connecting block (10) is slidably connected to the inner wall of the connecting sleeve (9). The two side walls of the sealing gasket (17) are respectively attached to the inner wall of the connecting sleeve (9) and the side wall of the connecting block (10). The inner wall of the connecting sleeve (9) is fixedly installed with a limiting block (14). The outer surface of the connecting block (10) is provided with a limiting groove that matches the limiting block (14).

5. An axial piston pump with a sealing structure according to claim 1, characterized in that: The outer surface of the connecting sleeve (9) is threaded with four connecting bolts (15), which penetrate the outer surface of the connecting sleeve (9) and are inserted into the outer surface of the connecting block (10).

6. An axial piston pump with a sealing structure according to claim 1, characterized in that: The protective assembly includes an installation cylinder (18) and a positioning ring (19). The installation cylinder (18) is sleeved on the outer surface of the pump body (1). The positioning ring (19) is fixedly installed on one end of the installation cylinder (18) near the fixing plate (3). A positioning block (20) is fixedly installed on the side wall of the fixing plate (3) near the positioning ring (19). Several rubber buffer rings (21) are fixedly installed on the outer surface of the installation cylinder (18).

7. An axial piston pump with a sealing structure according to claim 6, characterized in that: The side wall of the positioning ring (19) is provided with a positioning groove that matches the positioning block (20). The outer surface of the mounting cylinder (18) away from the positioning ring (19) is threaded with a mounting bolt (22). The mounting bolt (22) penetrates the outer surface of the mounting cylinder (18) and is inserted into the outer surface of the pump body (1).

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