Fluid end of high-pressure plunger pump

Abstract

The utility model discloses a fluid end of a high-pressure plunger pump, which comprises a fluid end seat, a liquid suction channel is arranged in the fluid end seat, the size of the liquid suction channel is matched with that of a liquid suction seat, the liquid suction seat is inserted into the liquid suction channel, an elastic seat is arranged at the end part of the liquid suction seat, a plunger rod is movably arranged at the right side of the elastic seat, and the plunger rod is connected with the plunger rod. A sealing seat is arranged in the hydraulic end seat and comprises a sealing rail, and a liquid drainage channel is formed in one side of the sealing rail. According to the fluid end of the high-pressure plunger pump, the water inlet valve and the water outlet valve of the plunger pump are integrated and combined together, the number of parts and the complex assembling process are reduced, and the structure of the whole fluid end is more concise; the manufacturing difficulty and cost are reduced, and the production efficiency is improved; the water inlet valve and the water outlet valve are combined together, the action coordination between the water inlet valve and the water outlet valve is better, and stable operation of the pump can be maintained; the whole pump is more compact in structure, and troubleshooting and maintenance are more convenient.

Description

Technical Field

[0001] The utility model relates to the field of plunger pumps, and particularly to a hydraulic end of a high-pressure plunger pump. Background Art

[0002] High-pressure and ultra-high-pressure plunger pumps are widely used in fields such as metallurgy, petrochemical, shipbuilding, and national defense; water jet cleaning using high-pressure plunger pumps has become the preferred choice for green and environmental protection cleaning methods; high-pressure plunger pumps mainly include a power end and a hydraulic end; the working principle of the power end: the power end is mainly responsible for converting the rotational motion of an electric motor or other power source into the reciprocating motion of the plunger; generally, the power end includes components such as a crankshaft, a connecting rod, a crosshead, and a transmission shaft; when the power source drives the crankshaft to rotate, the rotational motion of the crankshaft is converted into the linear reciprocating motion of the crosshead through the connecting rod; the crosshead then drives the plunger to reciprocate in the cylinder body, thereby realizing the process of liquid suction and discharge; the hydraulic end is mainly responsible for the suction, compression, and discharge of the liquid; the hydraulic end includes components such as a pump head, a plunger, a cylinder body, a liquid inlet valve, and a liquid discharge valve; when the plunger moves backward, a negative pressure is formed in the cylinder body, the liquid inlet valve opens, and the liquid is sucked into the cylinder body; when the plunger moves forward, the liquid in the cylinder body is compressed, the pressure increases, the liquid inlet valve closes, the liquid discharge valve opens, and the liquid is discharged from the cylinder body.

[0003] When the hydraulic end of the plunger pump is in use, the water inlet channel and the water outlet channel are of a separated design. Therefore, the water outlet valve and the water inlet valve are separately installed and designed, with a loose structure and being not easy to maintain and replace. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hydraulic end of a high-pressure plunger pump to solve the defects mentioned in the above background art, that is, the water inlet channel and the water outlet channel are of a separated design, so the water outlet valve and the water inlet valve are separately installed and designed, with a loose structure and being not easy to maintain and replace.

[0005] To achieve the above purpose, a hydraulic end of a high-pressure plunger pump is provided, which includes a hydraulic end seat. A liquid suction channel is opened inside the hydraulic end seat, and the size of the liquid suction channel is adapted to that of the liquid suction seat. At the same time, the liquid suction seat is inserted into the inside of the liquid suction channel, and an elastic seat is installed at the end of the liquid suction seat. A plunger rod is movably installed on the right side of the elastic seat. A sealing seat is arranged inside the hydraulic end seat. The sealing seat includes a sealing track, and a liquid discharge channel is opened on one side of the sealing track. The liquid discharge channel is arranged inside the hydraulic end seat, and a liquid discharge port is opened at the top of the liquid discharge channel.

[0006] Preferably, the cross-section of the liquid suction seat is arranged in a "T" shape, and a liquid outlet is opened at the end of the liquid suction seat. At the same time, a locking piece covers the liquid outlet, and the locking piece is movably connected to the surface of the elastic seat through a rubber seat.

[0007] Preferably, the locking piece is a circular structure made of rubber material, and the locking piece and the liquid outlet are concentric circle structures. At the same time, the area of the locking piece is larger than that of the liquid outlet.

[0008] Preferably, the elastic seat is a bowl-shaped structure made of rubber material, and an annular embedding seat is fixedly arranged at the end of the elastic seat. At the same time, the cross-section of the embedding seat is circular.

[0009] Preferably, the embedding seat is clamped inside a fitting groove with a size adapted to it and opened inside the hydraulic end seat, and a sealing strip is fixedly arranged on the outer surface of the elastic seat.

[0010] Preferably, the sealing strip and the sealing track are arranged oppositely, and a sealing groove is opened on the inner wall surface of the sealing track. At the same time, the sealing groove is annular, and the size of the sealing groove is adapted to that of the sealing strip. The sealing strip is clamped inside the sealing groove to block the liquid discharge channel.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. By integrating and combining the inlet valve and the outlet valve of the plunger pump, the utility model reduces the number of parts and the complex assembly process, making the structure of the entire hydraulic end more concise. This not only reduces the manufacturing difficulty and cost but also improves the production efficiency. When the inlet valve and the outlet valve are combined together, their movement coordination is better, which helps to maintain the stable operation of the pump. The structure of the entire pump becomes more compact, making it more convenient to troubleshoot and repair faults.

[0013] 2. By installing the elastic seat in a fixed manner through embedding and fixing it inside the hydraulic end seat, under the condition of the reciprocating lateral movement of the plunger rod, the elastic seat undergoes reciprocating deformation to realize the water inlet and drainage of the hydraulic end seat. It has a low usage cost, is easy to replace accessories, and can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view schematic diagram of the structure of the utility model;

[0015] Figure 2 is a bottom view of the structure of the utility model;

[0016] Figure 3 is a top view of the structure of the utility model;

[0017] Figure 4 is a front view of the structure of the utility model;

[0018] Figure 5 is a schematic diagram of the elastic seat;

[0019] Figure 6 is Figure 5Top view.

[0020] Reference numerals in the figure: 1, hydraulic end seat; 2, liquid suction channel; 3, liquid suction seat; 4, elastic seat; 41, locking piece; 42, liquid outlet; 43, embedding seat; 44, sealing strip; 5, sealing seat; 51, sealing groove; 52, sealing track; 6, liquid discharge channel; 7, liquid discharge port; 8, plunger rod. Detailed implementation manner

[0021] Please refer to Figures 1-6 , the present utility model provides a hydraulic end of a high-pressure plunger pump, including a hydraulic end seat 1. A liquid suction channel 2 is opened inside the hydraulic end seat 1, and the size of the liquid suction channel 2 is adapted to that of the liquid suction seat 3. At the same time, the liquid suction seat 3 is inserted into the inside of the liquid suction channel 2, and an elastic seat 4 is installed at the end of the liquid suction seat 3. A plunger rod 8 is movably installed on the right side of the elastic seat 4. A sealing seat 5 is arranged inside the hydraulic end seat 1. The sealing seat 5 includes a sealing track 52. A liquid discharge channel 6 is opened on one side of the sealing track 52, and the liquid discharge channel 6 is arranged inside the hydraulic end seat 1. At the same time, a liquid discharge port 7 is opened at the top of the liquid discharge channel 6.

[0022] As a preferred implementation manner, the cross-section of the liquid suction seat 3 is arranged in a "T" shape, and a liquid outlet 42 is opened at the end of the liquid suction seat 3. At the same time, a locking piece 41 covers the liquid outlet 42, and the locking piece 41 is movably connected to the surface of the elastic seat 4 through a rubber seat.

[0023] As a preferred implementation manner, the locking piece 41 is a circular structure made of rubber material, and the locking piece 41 and the liquid outlet 42 are concentric circle structures. At the same time, the area of the locking piece 41 is larger than that of the liquid outlet 42.

[0024] As a preferred implementation manner, the elastic seat 4 is a bowl-shaped structure made of rubber material, and an annular embedding seat 43 is fixedly arranged at the end of the elastic seat 4. At the same time, the cross-section of the embedding seat 43 is arranged in a circular shape.

[0025] As can be seen from the above, during use, the elastic seat 4 is fixedly arranged inside the hydraulic end seat 1 in an embedded and fixed manner. In the case of the reciprocating lateral movement of the plunger rod 8, the elastic seat 4 is reciprocally deformed, realizing the water inlet and drainage work of the hydraulic end seat 1. The use cost is low, the accessories are easy to replace, and it can be reused.

[0026] As a preferred implementation manner, the embedding seat 43 is clamped inside a fitting groove opened inside the hydraulic end seat 1 and adapted to its size, and a sealing strip 44 is fixedly arranged on the outer surface of the elastic seat 4;

[0027] As can be seen from the above, during use, the working mode of the inlet valve is as follows: when the plunger rod 8 moves outward, a negative pressure is formed inside the hydraulic end seat 1. At the same time, the soft elastic seat 4 expands outward, causing the annular sealing strip 44 to be clamped inside the annular sealing groove 51, preventing air intake when the inside of the hydraulic end seat 1 is in a negative pressure state; under the adsorption effect of the negative pressure, the locking piece 41 is opened, exposing the liquid outlet 42, and the external water enters the inside of the hydraulic end seat 1 under the action of the negative pressure; the working mode of the outlet valve is as follows: when the plunger rod 8 moves inward, the space inside the hydraulic end seat 1 is compressed, causing the locking piece 41 to close. The water inside the hydraulic end seat 1 separates the sealing strip 44 from the sealing groove 51, allowing the water to enter the inside of the drainage channel 6 through the sealing groove 51 and be discharged from the drainage port 7 on the upper side of the drainage channel 6; the inlet valve and the outlet valve of the piston pump are integrated and combined together, reducing the number of parts and the complex assembly process, making the structure of the entire hydraulic end more concise; this not only reduces the manufacturing difficulty and cost, but also improves the production efficiency; the inlet valve and the outlet valve are combined together, and their movement coordination is better, which helps to maintain the stable operation of the pump; making the structure of the entire pump more compact, making it more convenient to troubleshoot and repair faults.

[0028] As a preferred embodiment, the sealing strip 44 is disposed opposite to the sealing track 52, and the inner wall surface of the sealing track 52 is provided with a sealing groove 51. At the same time, the sealing groove 51 is annularly arranged, and the sealing groove 51 is adapted to the size of the sealing strip 44. The sealing strip 44 is clamped inside the sealing groove 51 and blocks the drainage channel 6.

[0029] Working principle: The working mode of the inlet valve is as follows: when the plunger rod 8 moves outward, a negative pressure is formed inside the hydraulic end seat 1. At the same time, the soft elastic seat 4 expands outward, causing the annular sealing strip 44 to be clamped inside the annular sealing groove 51, preventing air intake when the inside of the hydraulic end seat 1 is in a negative pressure state; under the adsorption effect of the negative pressure, the locking piece 41 is opened, exposing the liquid outlet 42, and the external water body enters the inside of the hydraulic end seat 1 under the action of the negative pressure; the working mode of the outlet valve is as follows: when the plunger rod 8 moves inward, the space inside the hydraulic end seat 1 is squeezed, causing the locking piece 41 to close. The water body inside the hydraulic end seat 1 separates the sealing strip 44 from the sealing groove 51, enabling the water body to enter the inside of the drain passage 6 through the sealing groove 51 and be discharged from the drain port 7 on the upper side of the drain passage 6. The inlet valve and the outlet valve of the plunger pump are integrated together, reducing the number of parts and the complex assembly process, making the structure of the entire hydraulic end more concise; this not only reduces the manufacturing difficulty and cost, but also improves the production efficiency; the inlet valve and the outlet valve are combined together, and their movement coordination is better, which helps to maintain the stable operation of the pump; the structure of the entire pump is more compact, making it more convenient for troubleshooting and maintenance; the elastic seat 4 is fixedly arranged inside the hydraulic end seat 1 by means of embedded fixation. Under the reciprocating lateral movement of the plunger rod 8, the elastic seat 4 undergoes reciprocating deformation to realize the water inlet and drainage work of the hydraulic end seat 1. It has a low usage cost, is easy to replace accessories, and can be reused.

[0030] The embodiments of the present invention are given for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. The hydraulic end of a high-pressure plunger pump, comprising a hydraulic end seat (1), characterized in that: An absorption liquid channel (2) is formed inside the hydraulic end seat (1), and the size of the absorption liquid channel (2) is adapted to that of the absorption liquid seat (3). Meanwhile, the absorption liquid seat (3) is inserted into the absorption liquid channel (2), and an elastic seat (4) is installed at the end of the absorption liquid seat (3). A plunger rod (8) is movably installed on the right side of the elastic seat (4). A sealing seat (5) is arranged inside the hydraulic end seat (1). The sealing seat (5) includes a sealing track (52), and a liquid discharge channel (6) is formed on one side of the sealing track (52). The liquid discharge channel (6) is arranged inside the hydraulic end seat (1), and a liquid discharge port (7) is formed at the top of the liquid discharge channel (6).

2. The hydraulic end of a high-pressure piston pump according to claim 1, characterized in that: The cross-section of the absorption liquid seat (3) is arranged in a "T" shape. A liquid outlet (42) is formed at the end of the absorption liquid seat (3). Meanwhile, a locking piece (41) covers the liquid outlet (42), and the locking piece (41) is movably connected to the surface of the elastic seat (4) through a rubber seat.

3. The hydraulic end of a high-pressure piston pump according to claim 1, characterized in that: The locking piece (41) is a circular structure made of rubber material. The locking piece (41) and the liquid outlet (42) are concentric circle structures. Meanwhile, the area of the locking piece (41) is larger than that of the liquid outlet (42).

4. The hydraulic end of a high-pressure piston pump according to claim 1, characterized in that: The elastic seat (4) is a bowl-shaped structure made of rubber material. An annular embedding seat (43) is fixedly arranged at the end of the elastic seat (4). Meanwhile, the cross-section of the embedding seat (43) is arranged in a circular shape.

5. The hydraulic end of a high-pressure piston pump according to claim 4, characterized in that: The embedding seat (43) is clamped inside a fitting groove formed inside the hydraulic end seat (1) and having a size adapted to that of the embedding seat (43). A sealing strip (44) is fixedly arranged on the outer surface of the elastic seat (4).

6. The hydraulic end of a high-pressure piston pump according to claim 5, characterized in that: The sealing strip (44) is arranged opposite to the sealing track (52). A sealing groove (51) is formed on the inner wall surface of the sealing track (52). Meanwhile, the sealing groove (51) is arranged in an annular shape, and the size of the sealing groove (51) is adapted to that of the sealing strip (44). The sealing strip (44) is clamped inside the sealing groove (51) to block the liquid discharge channel (6).

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