Pressure buffer device for high-pressure fluid delivery pumps

Abstract

The utility model relates to pressure buffer device technical field discloses a pressure buffer device for high pressure fluid delivery pump, including the main body, the inner wall sliding connection has the piston of main body, the outside fixed connection has the compression ring of piston, the outside fixed connection has the limit ring of compression ring, the outside sliding connection has the sliding sleeve of limit ring, the one end fixed connection has spring no.

Description

Technical Field

[0001] This utility model relates to the technical field of pressure buffer devices, and in particular to a pressure buffer device for a high-pressure fluid transfer pump. Background Technology

[0002] A high-pressure fluid pressure buffer device is a piece of equipment installed near the outlet of a high-pressure fluid transfer pump to balance and stabilize the fluid pressure output by the pump. Its core function is to absorb, disperse, and transform the uneven pressure waves generated during pump operation through its structure and working principle, allowing the fluid to enter the subsequent delivery pipeline at a relatively stable pressure state. This prevents damage to pipelines, valves, instruments, etc., caused by pressure shocks, ensuring the safe, reliable, and efficient operation of the entire high-pressure fluid transfer system.

[0003] High-pressure fluid pressure buffer devices typically consist of a buffer tank, an elastic element, inlet and outlet ports, and connecting components. When high-pressure fluid enters the device, the fluid impacts the elastic element, causing it to undergo elastic deformation and convert some of its kinetic energy into elastic potential energy for storage. When the fluid pressure decreases, the elastic element releases the stored energy to replenish the fluid pressure, thereby stabilizing the fluid pressure, reducing pressure fluctuations and pulsations, and allowing the fluid to be transported in the pipeline in a relatively stable state.

[0004] In existing technologies, some high-pressure fluid buffer devices still rely solely on adaptive elastic elements to buffer high-pressure fluids. This approach fails to effectively protect internal components while simultaneously buffering the high-pressure fluid. Under frequent high-pressure impacts, these internal components are prone to fatigue. Without proper buffering, the repeated action of pressure waves can induce fatigue stress in the metal components. This fatigue stress can cause localized deformation of the components and the external structure, and may even lead to equipment rupture and fluid leakage. Therefore, a pressure buffer device for high-pressure fluid transfer pumps is proposed to address these issues. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a pressure buffer device for a high-pressure fluid transfer pump, which aims to improve the problem that existing high-pressure fluid pressure buffer devices cannot effectively buffer the fluid while protecting its internal components.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pressure buffer device for a high-pressure fluid transfer pump includes a main body, a piston slidably connected to the inner wall of the main body, a pressure ring fixedly connected to the outside of the piston, a limit ring fixedly connected to the outside of the pressure ring, a sliding sleeve slidably connected to the outside of the limit ring, a spring fixedly connected to the end of the pressure ring away from the piston, a rubber washer fixedly connected to the outside of the sliding sleeve, a sliding ring fixedly connected to the outside of the piston, a reflux hole and an input hole opened on the inner wall of the piston, and a movable component for moving subsequent parts slidably connected to the inner wall of the main body.

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

[0009] The movable component includes a vertebral body, which is slidably connected to the inner wall of the main body. Two sealing rings are fixedly connected to the outside of the vertebral body. A T-shaped block is fixedly connected to the outside of the vertebral body. A slider is fixedly connected to the outside of the T-shaped block. A buffer column is fixedly connected to the end of the T-shaped block away from the vertebral body. A spring is fixedly connected to the outside of the vertebral body.

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

[0011] The inner wall of the main body is provided with guide holes, and the inner wall of the main body is provided with stabilizing chambers;

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

[0013] The inner wall of the main body is provided with a buffer reflux chamber, and the inner wall of the main body is provided with an output chamber;

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

[0015] The outer side of the pressure ring is slidably connected to the inner wall of the sliding sleeve, and one end of the spring away from the pressure ring is fixedly connected to the inner wall of the sliding sleeve.

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

[0017] The end of the rubber washer away from the sliding sleeve is in contact with the inner wall of the main body, and the outer side of the sliding ring is slidably connected to the inner wall of the main body;

[0018] As a further description of the above technical solution:

[0019] The sealing ring is externally slidably connected to the inner wall of the main body, and the slider is externally slidably connected to the inner wall of the main body.

[0020] As a further description of the above technical solution:

[0021] The end of the buffer column away from the T-block is in contact with the inner wall of the main body, and the end of the spring away from the cone is fixedly connected to the inner wall of the main body.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, during the downward movement of the piston inside the main body, the pressure ring connected to the piston compresses the spring inside the sliding sleeve through the limiting ring. Due to the elastic potential energy of the spring itself, the spring is buffered, and the rubber gasket connected to the sliding sleeve can further protect the sliding sleeve. Since the piston and the sliding ring move inside the main body, when not moving, the piston itself is closed to the guide hole and the output chamber. When the piston moves, it is no longer in contact with the guide hole, thus creating a gap. Therefore, the fluid will flow through the input hole, through its guide hole, and finally out of the output chamber, protecting the internal components of the equipment and extending the service life of the equipment.

[0024] 2. In this utility model, when the fluid enters the guide hole through the inlet, the cone is subjected to pressure and moves via the T-block connected to the slider. At the same time, the spring connected to the cone is compressed by the pressure. When the cone is squeezed away from the lower inlet of the guide hole, the buffer column will contact the interior of the main body to protect the cone. Due to the sealing effect of the sealing ring, the fluid can consume more thrust to push the cone from the lower outlet of the guide hole into the interior of the guide hole, reducing the damage of the fluid to the equipment. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a pressure buffer device for a high-pressure fluid transfer pump proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the piston structure of a pressure buffer device for a high-pressure fluid transfer pump proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the guide hole of a pressure buffer device for a high-pressure fluid transfer pump proposed in this utility model.

[0029] Legend:

[0030] 1. Main body; 2. Piston; 3. Pressure ring; 4. Limiting ring; 5. Sliding sleeve; 6. Spring 1; 7. Rubber washer; 8. Sliding ring; 9. Return hole; 10. Input hole; 11. Cone; 12. Sealing ring; 13. T-block; 14. Slider; 15. Buffer column; 16. Spring 2; 17. Guide hole; 18. Stabilizing chamber; 19. Buffer return chamber; 20. Output chamber. 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] Reference Figures 1 to 2 This utility model provides an embodiment of a pressure buffer device for a high-pressure fluid transfer pump, comprising a main body 1, which serves as the outer shell of the entire device. A piston 2 is slidably connected to the inner wall of the main body 1, allowing the piston 2 to slide flexibly along the inner wall of the main body 1, thereby changing its position according to changes in fluid pressure and playing a role in regulating and buffering the pressure. A pressure ring 3 is fixedly connected to the outside of the piston 2, and the pressure ring 3 moves together with the piston 2, transmitting the pressure received by the piston 2 to the pressure ring 3, thus playing a role in force transmission. A limit ring 4 is fixedly connected to the outside of the pressure ring 3, which restricts the range of motion of the piston 2, ensuring that it slides within a reasonable range. A sliding sleeve 5 is slidably connected to the outside of the limit ring 4, providing relative sliding support for the limit ring 4 and working with the pressure ring 3 to complete the buffering function.

[0033] A spring 6 is fixedly connected to the end of the pressure ring 3 away from the piston 2. When the piston 2 moves under pressure, the pressure ring 3 will squeeze the spring 6. The spring 6 uses its own elastic potential energy to buffer the pressure and reduce the impact of the pressure on the entire device. A rubber gasket 7 is fixedly connected to the outside of the sliding sleeve 5. The rubber gasket 7 not only plays a certain sealing role, but also protects the sliding sleeve 5 from damage when the components are squeezed and rubbed against each other. A sliding ring 8 is fixedly connected to the outside of the piston 2. When the sliding ring 8 slides on the inner wall of the main body 1, it can make the movement of the piston 2 more stable and smooth, and also guide the movement of the piston 2. A return hole 9 is opened on the inner wall of the piston 2. The return hole 9 is one of the important channels for the fluid to circulate inside the device, which facilitates the flow of fluid between different areas. An inlet hole 10 is opened on the inner wall of the piston 2. The inlet hole 10 is used to receive the fluid flowing into the piston 2 and is the inlet for the fluid to enter.

[0034] Reference Figure 3The movable component includes a cone 11, which is located in a key position inside the main body 1. It is an important component for controlling the flow of fluid and buffering pressure. Its external part is slidably connected to the inner wall of the main body 1. The cone 11 is fixedly connected to two sealing rings 12. The sealing rings 12 effectively prevent fluid from leaking from places where it should not leak, ensuring the airtightness of the fluid flow inside the device, so that the fluid can flow along a predetermined path. The cone 11 is fixedly connected to a T-shaped block 13, which serves to connect the cone 11 and the sealing rings 12, facilitating the transmission of force and enabling the components to work together.

[0035] The T-block 13 is externally fixedly connected to a slider 14, which slides on the inner wall of the main body 1 to assist the vertebral body 11 in moving smoothly and ensure that it changes position accurately when subjected to fluid pressure. The end of the T-block 13 away from the vertebral body 11 is fixedly connected to a buffer column 15. When the vertebral body 11 is subjected to greater pressure and is squeezed, the buffer column 15 will contact the interior of the main body 1 to protect the vertebral body 11 and prevent it from being damaged due to excessive compression. The vertebral body 11 is externally fixedly connected to a spring 16. The spring 16 will be compressed when the vertebral body 11 is subjected to pressure and moves, using its own elastic potential energy to buffer the pressure. At the same time, it can also help the vertebral body 11 return to its initial position after the pressure decreases.

[0036] Reference Figure 4 The inner wall of the main body 1 is provided with a guide hole 17, which provides guidance for the movement of fluid and related components, ensuring that the fluid and components can move along a predetermined route. The inner wall of the main body 1 is provided with a stabilizing chamber 18, which allows the fluid to enter and temporarily stabilize after a certain pressure change, which helps the entire device to regulate pressure smoothly. The inner wall of the main body 1 is provided with a buffer return chamber 19, which is one of the first areas that the fluid reaches after entering the device, where the pressure of the fluid can be initially buffered and regulated. The inner wall of the main body 1 is provided with an output chamber 20, which is where the fluid discharged from the device after pressure buffering, ensuring that the fluid flows out of the device smoothly into the subsequent conveying stage.

[0037] Reference Figures 1 to 2 The outer side of the pressure ring 3 is slidably connected to the inner wall of the sliding sleeve 5, ensuring smooth sliding of the pressure ring 3 within the sliding sleeve 5 and achieving stable compression of the spring 6. The end of the spring 6 furthest from the pressure ring 3 is fixedly connected to the inner wall of the sliding sleeve 5, providing a stable support point for the spring 6 when compressed and better fulfilling its buffering function. The end of the rubber gasket 7 furthest from the sliding sleeve 5 is in contact with the inner wall of the main body 1. This tight contact further enhances the sealing effect, preventing fluid leakage from the gap between the sliding sleeve 5 and the main body 1. The outer side of the sliding ring 8 is slidably connected to the inner wall of the main body 1, ensuring the stability and directionality of the piston 2's movement within the main body 1.

[0038] Reference Figure 3 The sealing ring 12 is externally slidably connected to the inner wall of the main body 1, maintaining good sealing performance during sliding to ensure fluid flows along the prescribed path. The slider 14 is externally slidably connected to the inner wall of the main body 1, allowing it to smoothly assist the movement of the cone 11 and ensuring the normal operation of the entire moving assembly. The end of the buffer column 15 away from the T-block 13 is in contact with the inner wall of the main body 1. This allows the buffer column 15 to effectively protect the cone 11 when it is subjected to greater pressure, preventing it from directly colliding with the inner wall of the main body 1 and causing damage. The end of the spring 16 away from the cone 11 is fixedly connected to the inner wall of the main body 1, providing stable support and better enabling it to perform its buffering and resetting functions.

[0039] Working principle: During use, fluid flows into the buffer return chamber 19 inside the main body 1 through the high-pressure delivery pump. At the same time, it flows into the input port 10 from the inside of the return hole 9. At this time, the piston 2 is pressured and moves downward. It also flows into the stabilizing chamber 18 from the inside of the guide hole 17 and the gap between the piston 2 and the cone 11 by applying pressure. Then, it flows into the gap between the buffer return chamber 19 and the output chamber 20 through the return hole 9. Finally, the fluid that has released the pressure is discharged through the output chamber 20.

[0040] During the downward movement of piston 2 inside the main body 1, the pressure ring 3 connected to piston 2 compresses spring 6 inside the sliding sleeve 5 through the limiting ring 4. The elastic potential energy of spring 6 itself provides buffering, and the rubber gasket 7 connected to the sliding sleeve 5 further protects the sliding sleeve 5. As piston 2 moves inside the main body 1 connected to sliding ring 8, when not moving, piston 2 is closed to guide hole 17 and output chamber 20. When piston 2 moves, it no longer contacts guide hole 17, thus creating a gap. Therefore, fluid will flow through input hole 10, through its guide hole 17, and finally out of output chamber 20, protecting the internal components of the equipment and extending the service life of the equipment.

[0041] When fluid flows through the inlet 10 into the guide hole 17, the cone 11 is under pressure and moves via the T-block 13 connected to the slider 14. At the same time, the spring 16 connected to the cone 11 is under pressure and compresses the space. When the cone 11 is squeezed away from the lower inlet of the guide hole 17, the buffer column 15 contacts the interior of the main body 1 to protect the cone 11. Due to the sealing effect of the sealing ring 12, the fluid can consume more thrust to push the cone 11 from the lower outlet of the guide hole 17 into the interior of the guide hole 17, reducing the damage of the fluid to the equipment.

[0042] 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. A pressure buffer device for a high-pressure fluid transfer pump, comprising a main body (1), characterized in that: A piston (2) is slidably connected to the inner wall of the main body (1). A pressure ring (3) is fixedly connected to the outside of the piston (2). A limit ring (4) is fixedly connected to the outside of the pressure ring (3). A sliding sleeve (5) is slidably connected to the outside of the limit ring (4). A spring (6) is fixedly connected to the end of the pressure ring (3) away from the piston (2). A rubber washer (7) is fixedly connected to the outside of the sliding sleeve (5). A sliding ring (8) is fixedly connected to the outside of the piston (2). A reflux hole (9) is opened on the inner wall of the piston (2). An input hole (10) is opened on the inner wall of the piston (2). An active component for moving subsequent parts is slidably connected to the inner wall of the main body (1).

2. The pressure buffer device for a high-pressure fluid transfer pump according to claim 1, characterized in that: The movable component includes a vertebral body (11), the vertebral body (11) is slidably connected to the inner wall of the main body (1), two sealing rings (12) are fixedly connected to the outside of the vertebral body (11), a T-shaped block (13) is fixedly connected to the outside of the T-shaped block (13), a slider (14) is fixedly connected to the outside of the T-shaped block (13), a buffer column (15) is fixedly connected to the end of the T-shaped block (13) away from the vertebral body (11), and a spring (16) is fixedly connected to the outside of the vertebral body (11).

3. The pressure buffer device for a high-pressure fluid transfer pump according to claim 1, characterized in that: The inner wall of the main body (1) is provided with a guide hole (17) and a stabilizing chamber (18) is provided on the inner wall of the main body (1).

4. The pressure buffer device for a high-pressure fluid transfer pump according to claim 1, characterized in that: The inner wall of the main body (1) is provided with a buffer reflux chamber (19) and an output chamber (20).

5. A pressure buffer device for a high-pressure fluid transfer pump according to claim 1, characterized in that: The outer side of the pressure ring (3) is slidably connected to the inner wall of the sliding sleeve (5), and the end of the spring (6) away from the pressure ring (3) is fixedly connected to the inner wall of the sliding sleeve (5).

6. A pressure buffer device for a high-pressure fluid transfer pump according to claim 1, characterized in that: The end of the rubber washer (7) away from the sliding sleeve (5) is in contact with the inner wall of the main body (1), and the outer side of the sliding ring (8) is slidably connected to the inner wall of the main body (1).

7. A pressure buffer device for a high-pressure fluid transfer pump according to claim 2, characterized in that: The sealing ring (12) is externally slidably connected to the inner wall of the main body (1), and the slider (14) is externally slidably connected to the inner wall of the main body (1).

8. A pressure buffer device for a high-pressure fluid transfer pump according to claim 2, characterized in that: The end of the buffer column (15) away from the T-block (13) is in contact with the inner wall of the main body (1), and the end of the second spring (16) away from the cone (11) is fixedly connected to the inner wall of the main body (1).

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