Anti-blocking piston of high-pressure pump

Abstract

The utility model discloses an anti-blocking piston of a high-pressure pump, which belongs to the technical field of pistons and comprises a piston body, a first spring is arranged outside a sliding seat, an oil storage bin is arranged inside the piston body, a push plate is slidably connected to the inner wall of the oil storage bin, and a wheel seat is connected to one end, far away from the push plate, of the push rod. The inner wall of the wheel seat is rotationally connected with a roller, an oil channel is formed in the inner side of the piston body, the oil groove communicates with the oil channel, the oil storage bin, the push plate and the sliding seat are matched, the space in the oil storage bin is used for storing lubricating oil, and power is provided for moving the push rod through the moving position of the sliding seat. After the push plate moves, lubricating oil in the oil storage bin is compressed, the compressed lubricating oil has power, the lubricating oil is conveyed to the position above the outer portion of the piston body to lubricate the upper portion of the piston body, abrasion of the piston body is reduced, and the service life of the piston body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pistons, and particularly relates to an anti-blocking piston for a high-pressure pump. Background Art

[0002] A high-pressure pump is a type of pump device that can provide high pressure. High-pressure pumps are divided into various types, including high-pressure plunger pumps, high-pressure reciprocating pumps, high-pressure electric pressure test pumps, and high-pressure cleaning pumps, etc., and are widely used in fields such as construction, highway foundation strengthening and reinforcement, high-pressure water jet-assisted rock breaking and coal falling, underground hydraulic support liquid supply, pumping high-pressure water for water-expanded metal bolts for anchoring, and dredging, cleaning, and washing of large underground pipelines. The technical characteristics of high-pressure pumps include high-pressure output, high-efficiency performance, long-life design, wide applicability, intelligent monitoring and protection, and easy maintenance and installation, etc. For example, new high-pressure pumps such as constant-pressure variable radial piston pumps have characteristics such as high pressure, large flow rate, compact structure, low noise, long life, fast response, and strong impact resistance, and are suitable for industries such as ships, steel, machine tools, and mines.

[0003] Most of the pistons inside the existing high-pressure pumps are in a horizontal placement state. The lubricating oil inside the high-pressure pump is at a low position. When the high-pressure pump is running, it drives the lubricating oil to lubricate the piston. After the high-pressure pump stops running, the lubricating oil falls back to the low position again. However, in the early stage of starting the high-pressure pump, the lubricating oil cannot be transported to the upper part of the piston in time, resulting in excessive wear of the upper part of the piston. To solve this technical problem, the utility model proposes an anti-blocking piston for a high-pressure pump. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an anti-blocking piston for a high-pressure pump, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An anti-blocking piston for a high-pressure pump, including a piston body, a sliding seat is slidably connected to the inner wall of the piston body, a first spring is arranged outside the sliding seat, an oil storage chamber is opened inside the piston body, a push plate is slidably connected to the inner wall of the oil storage chamber, a second spring is arranged inside the oil storage chamber, one side of the push plate located outside the oil storage chamber is connected with a push rod, the end of the push rod far away from the push plate is connected with a wheel seat, a roller is rotatably connected to the inner wall of the wheel seat, an oil inlet is opened on the inner side of the push plate, a check valve plate is hinged to one side of the push plate located inside the oil storage chamber, an oil passage is opened on the inner side of the piston body, one end of the oil passage is located inside the oil storage chamber, the other end of the oil passage is located outside the piston body, and an oil groove is opened on the inner side of the piston body, and the oil groove is communicated with the oil passage.

[0007] Preferably, a sealing gasket is connected to one side of the check valve plate, and the sealing gasket is made of rubber. The outer surface of the sealing gasket is in contact with one side of the check valve plate.

[0008] Preferably, a counterweight is connected to the other side of the check valve plate, and the counterweight is located at a position below the center of the check valve plate.

[0009] Preferably, one end of the first spring is connected to the inner wall of the piston body, and the other end of the first spring is connected to the outer surface of the sliding seat.

[0010] Preferably, a plurality of sliding sleeves are connected to the inner bottom wall of the oil storage chamber. The plurality of sliding sleeves are circularly arrayed. A guide post is slidably connected to the inner wall of each of the plurality of sliding sleeves. One end of the guide post located outside the sliding sleeve is connected to one side of the push plate located inside the oil storage chamber.

[0011] Preferably, the second spring is sleeved outside the sliding sleeve and the guide post. One end of the second spring is connected to the inner bottom wall of the oil storage chamber, and the other end of the second spring is connected to one side of the push plate located inside the oil storage chamber.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] In the present utility model, through the cooperation among the oil storage chamber, the push plate and the sliding seat, the space inside the oil storage chamber is used to store lubricating oil. The position where the sliding seat moves provides power for the moving push rod. After the push plate moves, the lubricating oil inside the oil storage chamber is compressed. The compressed lubricating oil has power, enabling the lubricating oil to flow through the oil passage to the outside of the piston body, and the lubricating oil is transported to the upper part outside the piston body to lubricate the upper part of the piston body. While the piston body is operating, it can contact the lubricating oil, so that the piston body is lubricated, reducing the wear of the piston body and improving the service life of the piston body.

[0014] In the present utility model, through the cooperation between the oil groove and the oil passage, after the oil passage guides the lubricating oil to flow to the outside of the piston body, the oil groove can guide the flow direction of the lubricating oil. Through the reciprocating movement of the piston body, the lubricating oil is quickly smeared on the outside of the piston body, and at the same time, the cleaning effect is started by the lubricating oil to prevent the accumulation of oil sludge on the outside of the piston body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a high-pressure pump anti-blocking piston of the present utility model;

[0016] Figure 2 It is a schematic diagram of the main structure in a high-pressure pump anti-blocking piston of the present utility model;

[0017] Figure 3Schematic diagram of the internal structure of the piston body in a high-pressure pump anti-blocking piston of the present utility model;

[0018] Figure 4 Schematic diagram of the check valve plate structure in a high-pressure pump anti-blocking piston of the present utility model;

[0019] Figure 5 Schematic diagram of the oil inlet structure in a high-pressure pump anti-blocking piston of the present utility model.

[0020] In the figure: 1, piston body; 2, sliding seat; 3, first spring; 4, oil storage chamber; 5, push plate; 6, second spring; 7, push rod; 8, wheel seat; 9, roller; 10, oil inlet; 11, check valve plate; 12, oil passage; 13, gasket; 14, counterweight; 15, sliding sleeve; 16, guide post; 17, oil groove. Specific implementation manner

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0022] As Figures 1-5 shown, a high-pressure pump anti-blocking piston includes a piston body 1. A sliding seat 2 is slidably connected to the wall of the piston body 1. A first spring 3 is arranged outside the sliding seat 2. The sliding seat 2 is connected to a connecting rod. When the connecting rod moves, it first pushes the sliding seat 2 to move, while the piston cannot move temporarily. The position where the connecting rod drives the sliding seat 2 to move is used to push the push rod 7 to move, providing power for the movement of the push rod 7. After the connecting rod pushes the push rod 7 to move, at the same time, the sliding seat 2 slides to the bottom, and the power of the connecting rod can be transmitted to the piston body 1 to push the piston body 1 to move.

[0023] An oil storage chamber 4 is opened inside the piston body 1. A push plate 5 is slidably connected to the inner wall of the oil storage chamber 4. The push plate 5 receives power through the push rod 7. After the push rod 7 moves, it pushes the push plate 5 to squeeze the lubricating oil inside the oil storage chamber 4, and the lubricating oil has the power to be discharged outward after being squeezed.

[0024] A second spring 6 is arranged inside the oil storage chamber 4. One side of the push plate 5 located outside the oil storage chamber 4 is connected to the push rod 7. The second spring 6 is sleeved outside the sliding sleeve 15 and the guide post 16. One end of the second spring 6 is connected to the inner bottom wall of the oil storage chamber 4, and the other end of the second spring 6 is connected to one side of the push plate 5 located inside the oil storage chamber 4. The second spring 6 provides power for the push plate 5 to reset. After the push plate 5 moves to compress the lubricating oil inside the oil storage chamber 4 and discharges it outward through the oil passage 12, at the same time, the second spring 6 is compressed and deformed. After the external driving force on the push plate 5 is lost, the compressed second spring 6 returns to its original state, and at the same time, the second spring 6 pushes the push plate 5 to reset.

[0025] One end of the push rod 7 away from the push plate 5 is connected with a wheel seat 8. The inner wall of the wheel seat 8 is rotatably connected with a roller 9. The stability of the roller 9 is maintained through the wheel seat 8. The roller 9 contacts the connecting rod, reducing the friction on the connecting rod and improving the service life of the connecting rod.

[0026] An oil inlet 10 is provided inside the push plate 5. A check valve plate 11 is hinged on one side of the push plate 5 located inside the oil storage chamber 4. When the piston moves backward, the check valve plate 11 inside the push plate 5 loses its blocking effect, and the external lubricating oil enters the inside of the oil storage chamber 4 through the oil inlet 10 to supplement lubricating oil for the oil storage chamber 4. A sealing gasket 13 is connected to one side of the push plate 5 where the check valve plate 11 is located, and the sealing gasket 13 is made of rubber. The outer surface of the sealing gasket 13 contacts one side of the check valve plate 11. The check valve plate 11 blocks the lubricating oil inside the oil storage chamber 4 from flowing out. When the push plate 5 compresses the lubricating oil inside the oil storage chamber 4, high pressure will be generated inside the oil storage chamber 4. The sealing gasket 13 prevents the lubricating oil from seeping out through the gap between the push plate 5 and the check valve plate 11.

[0027] An oil passage 12 is provided inside the piston body 1. One end of the oil passage 12 is located inside the oil storage chamber 4, and the other end of the oil passage 12 is located outside the piston body 1. The lubricating oil inside the oil storage chamber 4 is transported to the upper part outside the piston body 1 through the oil passage 12 to lubricate the upper part of the piston body 1. An oil groove 17 is provided inside the piston body 1, and the oil groove 17 communicates with the oil passage 12. The oil groove 17 can guide the flow direction of the lubricating oil, enabling the lubricating oil to be quickly smeared on the outside of the piston body 1. While the outside of the piston body 1 is filled with lubricating oil, the reciprocating motion can keep the outside of the piston body 1 clean, preventing too little lubricating oil from failing to achieve the lubrication effect and then forming oil sludge sticking to the outside of the piston body 1, resulting in an increase in the moving resistance of the piston body 1 and finally causing the piston body 1 to be blocked inside the cylinder block.

[0028] A counterweight 14 is connected to the other side of the check valve plate 11, and the counterweight 14 is located at a position slightly below the center of the check valve plate 11. The weight below the check valve plate 11 is increased through the counterweight 14, improving the flipping speed when the check valve plate 11 flips downward and increasing the sealing effect between the check valve plate 11 and the sealing gasket 13 at the same time.

[0029] One end of the first spring 3 is connected to the inner wall of the piston body 1, and the other end of the first spring 3 is connected to the outer surface of the sliding seat 2. After the connecting rod pushes the sliding seat 2 to move, the first spring 3 is compressed. The sliding seat 2 is supported by the first spring 3, enabling the sliding seat 2 to always be in a positioned state.

[0030] A plurality of sliding sleeves 15 are connected to the inner bottom wall of the oil storage tank 4. The plurality of sliding sleeves 15 are circularly arrayed. The inner walls of the plurality of sliding sleeves 15 are all slidably connected with guide posts 16. One end of the guide post 16 located outside the sliding sleeve 15 is connected to one side of the push plate 5 located inside the oil storage tank 4. To prevent the push plate 5 from being unstable when moving, the guide post 16 is guided by the sliding sleeve 15 to improve the stability of the push plate 5 when moving. At the same time, the guide post 16 and the sliding sleeve 15 can prevent the second spring 6 from deforming during elastic movement and losing the elastic support for the push plate 5.

[0031] It should be noted that during the actual use of the device, first, the connecting rod is installed inside the sliding seat 2. When the connecting rod moves, it first pushes the sliding seat 2 to move. After the sliding seat 2 moves, it compresses the first spring 3. The movement of the sliding seat 2 drives the connecting rod to move, providing power for the push rod 7 to push the push plate 5. After the connecting rod moves, it first contacts the roller 9. The roller 9 pushes the push rod 7 to move through the wheel seat 8. While the push rod 7 moves, it pushes the push plate 5 to move. The push plate 5 compresses the lubricating oil inside the oil storage tank 4, providing power for the flow of the lubricating oil. After the lubricating oil is compressed, it flows out of the oil storage tank 4 through the oil passage 12. The flowing lubricating oil lubricates the outside of the upper part of the piston. While the push plate 5 moves, it compresses the second spring 6. After the connecting rod returns, the push plate 5 loses the driving force, and the second spring 6 pushes the push plate 5 to move backward. At the same time, the check valve plate 11 loses the extrusion of the lubricating oil and the power support. Subsequently, under the push of the external lubricating oil, the check valve plate 11 disengages from the contact with the gasket 13, and at the same time, the external lubricating oil flows into the inside of the oil storage tank 4, preparing for the next lubrication of the piston body 1. At the same time, the first spring 3 pushes the sliding seat 2 to closely follow the movement of the connecting rod.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure pump anti-blocking piston, comprising a piston body (1), characterized in that: The inner wall of the piston body (1) is slidably connected to a sliding seat (2), a first spring (3) is arranged outside the sliding seat (2), an oil storage bin (4) is opened inside the piston body (1), a push plate (5) is slidably connected to the inner wall of the oil storage bin (4), a second spring (6) is arranged inside the oil storage bin (4), a push rod (7) is connected to the side of the push plate (5) located outside the oil storage bin (4), and a wheel seat (8) is connected to the end of the push rod (7) away from the push plate (5), and the wheel seat (8) is The inner wall is rotatably connected to a roller (9); an oil inlet (10) is provided on the inner side of the push plate (5); a check plate (11) is hingedly connected to one side of the push plate (5) located inside the oil storage bin (4); an oil passage (12) is provided on the inner side of the piston body (1); one end of the oil passage (12) is located inside the oil storage bin (4); the other end of the oil passage (12) is located outside the piston body (1); an oil groove (17) is provided on the inner side of the piston body (1); and the oil groove (17) is connected to the oil passage (12).

2. The anti-blocking piston for a high-pressure pump according to claim 1, characterized in that: The push plate (5) is located on one side of the anti-return plate (11) and is connected to a sealing gasket (13), and the sealing gasket (13) is made of rubber, and the outer surface of the sealing gasket (13) is in contact with one side of the anti-return plate (11).

3. The anti-blocking piston for a high-pressure pump according to claim 2, characterized in that: A counterweight (14) is connected to the other side of the anti-return plate (11), and the counterweight (14) is located at a lower position of the center of the anti-return plate (11).

4. The anti-blocking piston for a high-pressure pump according to claim 3, characterized in that: One end of the first spring (3) is connected to the inner wall of the piston body (1), and the other end of the first spring (3) is connected to the outer surface of the slide seat (2).

5. The anti-blocking piston for a high-pressure pump according to claim 4, characterized in that: The inner bottom wall of the oil storage bin (4) is connected to a plurality of sliding sleeves (15), the plurality of sliding sleeves (15) are arranged in a circular array, the inner walls of the plurality of sliding sleeves (15) are all slidably connected to guide pillars (16), and one end of the guide pillar (16) located outside the sliding sleeve (15) is connected to a side of the push plate (5) located inside the oil storage bin (4).

6. The anti-blocking piston for a high-pressure pump according to claim 5, characterized in that: The second spring (6) is sleeved on the outside of the sliding sleeve (15) and the guide column (16), one end of the second spring (6) is connected to the inner bottom wall of the oil storage bin (4), and the other end of the second spring (6) is connected to one side of the push plate (5) located inside the oil storage bin (4).

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