A special tool for pressing the valve core of a low-pressure bypass valve.

Abstract

This utility model relates to the field of valve assembly tools, and discloses a special tool for pressing together the valve core of a low-pressure bypass valve. It includes a support base, an adjustment mechanism on the support base, an auxiliary mechanism on the adjustment mechanism, and a guide rod on the adjustment mechanism. The guide rod is fixedly connected to the top outer wall of the support base, and a top plate is slidably connected to the side outer wall of the guide rod. A support frame is fixedly connected to the left outer wall of the top plate, and a telescopic hydraulic cylinder is fixedly connected to the bottom outer wall of the support frame. A secondary frame is fixedly connected to the left outer wall of the support base, and a rubber buffer pad is fixedly connected to the top outer wall of the top plate. In this utility model, the telescopic hydraulic cylinder drives the top plate to stably close to the support base, causing the valve core components to be evenly stressed and precisely contacted. This effectively ensures the sealing effect between the valve disc and the valve seat of the pre-opening valve, ensuring the maintenance quality of the low-pressure bypass valve, and thus guaranteeing the safe and stable operation of the unit.

Description

Technical Field

[0001] This utility model relates to the field of valve assembly tools, and in particular to a special tool for pressing the valve core of a low-pressure bypass valve. Background Technology

[0002] The pressing of the valve core in a low-pressure bypass valve is a crucial process for ensuring the sealing performance and adjustment accuracy of the valve assembly. The specialized tools used must meet three core requirements: precise positioning, controllable pressure application, and damage prevention, in order to ensure the assembly accuracy (such as concentricity, perpendicularity, and fit) of the valve core with components such as the valve seat and valve stem. Manual pressing tools are suitable for low-pressure, small-batch applications. They are based on a screw drive (such as a manual guide rod jack), and are equipped with a guide frame and a positioning base. The base fixes the valve body, and the top is driven by rotating the handle to lower the pressure head. The pressure head is constrained in direction by the guide sleeve.

[0003] The special tool for pressing the valve core of the low-pressure bypass valve has the following defects: the pressure of the pre-opening valve is different from that of ordinary valves, which can be manually pressed. Because the pre-opening valve has a non-fixable disc spring inside the valve, manual pressing can easily cause the disc spring to deflect, resulting in discontinuous distribution of the pressure of the pressure of the pressure of the pressure of the pressure of the pressure of the pressure of the pressure of the pressure of the pressure of the pressure of the pressure of the pressure of the pressure of the valve core of the low-pressure bypass valve. Therefore, a special tool for pressing the valve core of the low-pressure bypass valve is proposed to solve the above problems. Summary of the Invention

[0004] To overcome the above deficiencies, this utility model provides a special tool for pressing the valve core of a low-pressure bypass valve. It aims to improve the existing technology where the pre-opening valve can be manually pressed, unlike ordinary valves. Because the pre-opening valve has a non-fixable disc spring inside the valve, manual pressing can easily cause the disc spring to deflect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a special tool for pressing the valve core of a low-pressure bypass valve, comprising a support base, an adjustment mechanism on the support base, an auxiliary mechanism on the adjustment mechanism, a guide rod on the adjustment mechanism, the guide rod being fixedly connected to the top outer wall of the support base, a top plate being slidably connected to the side outer wall of the guide rod, a support frame being fixedly connected to the left outer wall of the top plate, a telescopic hydraulic cylinder being fixedly connected to the bottom outer wall of the support frame, a sub-frame being fixedly connected to the left outer wall of the support base, and a rubber buffer pad being fixedly connected to the top outer wall of the top plate.

[0006] As a further description of the above technical solution: the auxiliary mechanism includes a hollow hole, which is opened on the top inner wall of the guide rod, and a high-strength aluminum alloy is fixedly connected to the side inner wall of the top plate.

[0007] As a further description of the above technical solution: there are four guide rods, which are fixedly connected to the top outer wall of the support base, and the four guide rods pass through the top inner wall of the top plate.

[0008] As a further description of the above technical solution: the support frame is symmetrical to the sub-frame, and the telescopic hydraulic cylinder is fixedly connected to the top inner wall of the sub-frame.

[0009] As a further description of the above technical solution: there are four rubber buffer pads, and the four rubber buffer pads are respectively fixedly connected to the outer walls of the top and bottom sides of the top plate and the support base.

[0010] As a further description of the above technical solution: there are several hollow holes, and the several hollow holes are respectively opened on the top plate, the support base, and the inner side wall of the hollow hole.

[0011] As a further description of the above technical solution: the high-strength aluminum alloy is fixedly connected to the inner side walls of the top plate and the support base respectively.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the top plate and the support seat are stably brought together by the telescopic hydraulic cylinder, which drives the valve core and related components to be evenly stressed and make precise contact. This can effectively ensure the sealing effect between the valve disc and the valve seat of the pre-opening valve, ensure the maintenance quality of the low-pressure bypass valve, and thus ensure the safe and stable operation of the unit.

[0013] 2. In this utility model, the operation process is simplified by using structures such as guide rods, push rods, and telescopic hydraulic cylinders, which greatly shortens the valve core pressing time, thereby improving the efficiency of the entire valve maintenance work, reducing equipment downtime, reducing the impact on production, and ensuring maintenance quality and safe and stable operation of the unit.

[0014] 3. In this utility model, by using high-strength aluminum alloy to make key components and opening hollow holes, the overall weight is reduced while meeting the strength requirements of the tool, making it easier for operators to carry and operate; the rubber buffer pad can reduce collisions during the pressing process, protect the valve core, and improve the convenience and reliability of the tool. Attached Figure Description

[0015] Figure 1 This is a schematic front view of the overall design of a special tool for pressing the valve core of a low-pressure bypass valve according to this utility model. Figure 2 This is a top view schematic diagram of a special tool for pressing the valve core of a low-pressure bypass valve according to the present invention; Figure 3 This is a side view of a special tool for pressing the valve core of a low-pressure bypass valve according to the present invention.

[0016] Legend: 1. Support base; 2. Adjustment mechanism; 21. Guide rod; 22. Top plate; 23. Support frame; 24. Telescopic hydraulic cylinder; 25. Sub-frame; 26. Rubber buffer pad; 3. Auxiliary mechanism; 31. Hollow hole; 32. High-strength aluminum alloy. Detailed Implementation

[0017] 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.

[0018] Reference Figures 1-3 This utility model provides an embodiment of a special tool for pressing the valve core of a low-pressure bypass valve, including a support base 1, an adjustment mechanism 2 on the support base 1, an auxiliary mechanism 3 on the adjustment mechanism 2, a guide rod 21 on the adjustment mechanism 2, the guide rod 21 being fixedly connected to the top outer wall of the support base 1, a top plate 22 being slidably connected to the side outer wall of the guide rod 21, a support frame 23 being fixedly connected to the left outer wall of the top plate 22, and a telescopic hydraulic cylinder 24 being fixedly connected to the bottom outer wall of the support frame 23. The telescopic hydraulic cylinder 24 replaces the traditional... The movable screw and nut, the telescopic hydraulic cylinder 24 is composed of a hydraulic pump, a hydraulic cylinder and a piston rod, etc. The hydraulic pump controls the oil pressure in the hydraulic cylinder to realize the extension and retraction of the piston rod. At the same time, the telescopic hydraulic cylinder 24 can more accurately control the distance between the top plate 22 and the support seat 1, and can provide greater force, making the valve core press red lead easier and more accurate. Meanwhile, the operation of the hydraulic system is relatively simple, which can improve maintenance efficiency. The sub-frame 25 is fixedly connected to the left outer wall of the support seat 1, and the rubber buffer pad 26 is fixedly connected to the top outer wall of the top plate 22.

[0019] Reference Figures 1-3 There are four guide rods 21, which are fixedly connected to the top outer wall of the support base 1. The four guide rods 21 pass through the top inner wall of the top plate 22. The support frame 23 and the sub-frame 25 are symmetrical. The telescopic hydraulic cylinder 24 is fixedly connected to the top inner wall of the sub-frame 25. There are four rubber buffer pads 26, which are fixedly connected to the top and bottom outer walls of the top plate 22 and the support base 1. Rubber is used to provide buffering performance. During the process of pressing the valve core with red lead, the rubber buffer pads 26 can play a buffering role to avoid direct collision between the valve core and the top plate 22 or the support base 1, and protect the surface of the valve core from damage.

[0020] Reference Figures 1-3The auxiliary mechanism 3 includes a hollow hole 31, which is opened on the top inner wall of the guide rod 21. A high-strength aluminum alloy 32 is fixedly connected to the inner side wall of the top plate 22. The top plate 22 and the support base 1 are made of high-strength aluminum alloy 32 instead of traditional steel. The high-strength aluminum alloy 32 has the characteristics of light weight and high strength, which reduces the overall weight of the tool, making it easier for operators to carry and operate. At the same time, it can also meet the strength requirements of the tool and ensure its normal use. There are several hollow holes 31, which are respectively opened on the inner side walls of the top plate 22, the support base 1, and the hollow hole 31. The hollow holes 31 further reduce the weight of the guide rod 21 itself, improving the traditional solid weight which is heavy and inconvenient for personnel to carry when moving. The high-strength aluminum alloy 32 is fixedly connected to the inner side walls of the top plate 22 and the support base 1.

[0021] Working Principle: During the overhaul of the unit in our plant, the low-pressure bypass valve is inspected and sent to the equipment manufacturer for disassembly and repair. Before reassembly, this special tool is used. It consists of upper and lower top plates 22, support base 1, and four guide rods 21. The telescopic hydraulic cylinder 24 brings the top plate 22 and support base 1 together, fixing the valve core of the low-pressure bypass valve. When the top plate 22 moves downward, it moves downward at the dead angle, pressing the valve stem on the valve core downward. This ensures that the valve disc of the pre-opening valve is in complete contact with the valve seat. A uniform and continuous coil appears on the red lead colored surface of the valve disc, indicating that the valve core has a good sealing effect. Using this special tool can effectively solve the force problem. All four corners are pressed down simultaneously without vibration or deviation. It can efficiently check the valve's sealing condition, improve the valve maintenance efficiency, and ensure the maintenance quality of the low-pressure bypass valve, further ensuring the safe and stable operation of the unit.

[0022] 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 special tool for pressing the spool of a low-pressure bypass valve, comprising a support seat (1), characterized in that: An adjustment mechanism (2) is provided on the support base (1), and an auxiliary mechanism (3) is provided on the adjustment mechanism (2). The adjustment mechanism (2) is provided with a guide rod (21), which is fixedly connected to the top outer wall of the support base (1). The guide rod (21) is slidably connected to the side outer wall of the guide rod (21) and a top plate (22). The top plate (22) is fixedly connected to the left outer wall of the top plate (22) and a support frame (23). The bottom outer wall of the support frame (23) is fixedly connected to a telescopic hydraulic cylinder (24). The support base (1) is fixedly connected to a sub-frame (25), and the top outer wall of the top plate (22) is fixedly connected to a rubber buffer pad (26).

2. The special tool for pressing the valve core of a low-pressure bypass valve according to claim 1, characterized in that: The auxiliary mechanism (3) includes a hollow hole (31), which is opened on the top inner wall of the guide rod (21), and a high-strength aluminum alloy (32) is fixedly connected to the side inner wall of the top plate (22).

3. The special tool for pressing the spool of a low-pressure bypass valve according to claim 1, characterized in that: There are four guide rods (21). The four guide rods (21) are fixedly connected to the top outer wall of the support base (1) and the four guide rods (21) penetrate the top inner wall of the top plate (22).

4. The special tool for pressing the spool of a low-pressure bypass valve according to claim 1, characterized in that: The support frame (23) is symmetrical to the sub-frame (25), and the telescopic hydraulic cylinder (24) is fixedly connected to the top inner wall of the sub-frame (25).

5. The special tool for pressing the spool of a low-pressure bypass valve according to claim 1, characterized in that: There are four rubber buffer pads (26), and the four rubber buffer pads (26) are respectively fixedly connected to the top and bottom outer walls of the top plate (22) and the support base (1).

6. The special tool for pressing the spool of a low-pressure bypass valve according to claim 2, characterized in that: There are several hollow holes (31), and the hollow holes (31) are respectively opened on the inner side wall of the top plate (22), the support base (1) and the hollow hole (31).

7. The special tool for pressing the spool of a low-pressure bypass valve according to claim 2, characterized in that: The high-strength aluminum alloy (32) is fixedly connected to the inner side wall of the top plate (22) and the support base (1).

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