Special tool for lifting valve rod

Abstract

The utility model discloses a special tool for lifting a valve rod, and belongs to the technical field of valves. A special tool for lifting a valve rod comprises a flange plate installed on a valve body and further comprises an adjusting screw rod used for driving the valve rod to ascend and descend, an adjusting seat is arranged on the flange plate, the top of the flange plate is fixedly provided with an adjusting seat through a plurality of supporting plates, the adjusting screw rod is in threaded connection with the adjusting seat, and the other end of the adjusting screw rod is matched with the top of the valve rod through a connecting piece. When the adjusting screw rod is driven to rotate, the adjusting screw rod drives the valve rod to ascend and descend through the connecting piece. The flange plate is installed on the valve body, the adjusting screw rod is in threaded connection with the adjusting seat, the adjusting screw rod is driven to rotate towards the flange plate, the bottom of the adjusting screw rod abuts against the top of the valve rod, the valve rod can be pushed to move into the valve body, and when the adjusting screw rod is rotated reversely, the valve rod can be driven to ascend through the connecting piece; the valve rod is conveniently driven to move to open or close the valve, and the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a special tool for lifting valve stems. Background Technology

[0002] Steam soot blowers play a crucial role in boiler systems, primarily used to remove dust, soot, and other deposits accumulated on the boiler's heating surfaces. Long-term accumulation of these deposits can significantly reduce boiler thermal efficiency, increase fuel consumption, and potentially lead to equipment damage or malfunction. Steam soot blowers utilize high-pressure steam as a medium, which is sprayed at high speed through nozzles onto the boiler's heating surfaces, generating a powerful impact and vibration effect that blows away the dust and deposits adhering to the surfaces.

[0003] A pneumatic three-way regulating valve is typically installed at the air inlet of a steam sootblower to control or regulate the steam entering the sootblower. It uses compressed air as a power source and a diaphragm actuator to drive the valve core, achieving precise regulation of fluid flow, pressure, or temperature. The diaphragm actuator is a key component of the pneumatic diaphragm three-way regulating valve, consisting of a diaphragm, spring, and push rod. One side of the diaphragm is connected to compressed air, while the other side contacts the atmosphere or a reference pressure. The push rod is fixedly connected to the valve stem via a connecting block. Deformation of the diaphragm moves the push rod and valve stem, thereby changing the position of the valve core.

[0004] Over time, scale can easily build up on the valve stem of a pneumatic three-way control valve, causing it to become stuck. Air pressure can no longer move the valve stem to open the valve. In an emergency, steam is used for cleaning, and the diaphragm actuator is usually removed, and the valve stem is moved by hammering. However, hammering can cause tiny cracks or deformation inside the valve stem, reducing its mechanical strength. This is especially problematic in high-stress areas, potentially leading to valve stem breakage or other malfunctions, affecting subsequent use. Utility Model Content

[0005] The purpose of this utility model is to solve the problem in the prior art that scale buildup on the valve stem causes it to get stuck, making it difficult to drive the valve stem to move and open the valve, and that hammering can easily damage the valve stem. Therefore, a special tool for lifting valve stems is proposed.

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

[0007] A special tool for lifting valve stem includes a flange plate mounted on a valve body and an adjusting screw for driving the valve stem to rise and fall, which is disposed on the flange plate. An adjusting seat is fixedly disposed on the top of the flange plate by multiple support plates. The adjusting screw is threadedly connected to the adjusting seat. One end of the adjusting screw is provided with a handle, and the other end of the adjusting screw is engaged with the top of the valve stem through a connector. When the adjusting screw is driven to rotate, the adjusting screw drives the valve stem to rise and fall through the connector.

[0008] To facilitate the lifting and lowering of the valve stem, preferably, the connecting component includes a first sleeve and a second sleeve. The first sleeve has a limiting hole, and a limiting ring is slidably disposed in the limiting hole. One end of the second sleeve extending into the limiting hole is fixedly connected to the limiting ring. One end of the valve stem located in the limiting hole is fixedly provided with a step. A plurality of first bolts are threadedly connected to the first sleeve. One end of the first bolt extending into the limiting hole abuts against the outer wall of the valve stem. The other end of the adjusting screw is fixedly disposed in the second sleeve by a second bolt.

[0009] To facilitate the fixed connection between the adjusting screw and the second sleeve, the second sleeve is further provided with a first threaded hole that penetrates the wall thickness, and the other end of the adjusting screw is provided with a through hole, through which the second bolt passes and is threadedly connected to the first threaded hole.

[0010] To facilitate the rotation of the adjusting screw, preferably, a hexagonal prism is fixedly provided at one end of the adjusting screw, and a disc is slidably provided at the other end of the adjusting screw. The disc has an adjusting hole that matches the hexagonal prism, and one end of the handle is threadedly connected to the disc.

[0011] Furthermore, the disc has multiple second threaded holes on its circumference, and a connecting screw is fixedly provided at one end of the handle, the connecting screw being threadedly connected to the second threaded holes.

[0012] Furthermore, the second threaded hole is connected to the adjustment hole, and one end of the connecting screw extending into the adjustment hole abuts against the side of the hexagonal prism.

[0013] Compared with the prior art, this utility model provides a special tool for lifting valve stems, which has the following beneficial effects:

[0014] 1. This special tool for lifting valve stems involves installing a flange plate on the valve body, fixing an adjusting seat on the flange plate, and threading an adjusting screw onto the adjusting seat. Driving the adjusting screw to rotate towards the flange plate causes the bottom of the adjusting screw to abut against the top of the valve stem, pushing the valve stem into the valve body. When the adjusting screw is rotated in the opposite direction, it can lift the valve stem through the connecting piece, facilitating the movement of the valve stem to open or close the valve and improving the performance.

[0015] 2. This special tool for lifting valve stems works by fitting the adjustment hole of a disc onto a hexagonal prism, and then driving the disc to rotate via a handle. The disc, through the hexagonal prism, drives the adjustment screw to rotate, thus improving the efficiency of use.

[0016] All parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model installs a flange plate on the valve body, fixes an adjusting seat on the flange plate, and threadedly connects an adjusting screw to the adjusting seat. Driving the adjusting screw to rotate towards the flange plate causes the bottom of the adjusting screw to abut against the top of the valve stem, which can push the valve stem into the valve body. When the adjusting screw is rotated in the opposite direction, it can carry the valve stem upward through the connecting piece, which facilitates driving the valve stem to move and open or close the valve, thus improving the performance. Attached Figure Description

[0017] Figure 1 This utility model provides a structural schematic diagram of a special tool for lifting valve stems. Figure 1 ;

[0018] Figure 2 This utility model provides a structural schematic diagram of a special tool for lifting valve stems. Figure 2 ;

[0019] Figure 3 This utility model provides a structural schematic diagram of a special tool for lifting valve stems. Figure 3 ;

[0020] Figure 4 This is a cross-sectional view of the first sleeve of a special tool for lifting valve stems proposed in this utility model.

[0021] In the diagram: 1. Flange plate; 101. Support plate; 102. Adjusting seat; 2. Adjusting screw; 201. Hexagonal prism; 202. Through hole; 3. First sleeve; 301. Second sleeve; 302. First threaded hole; 303. First bolt; 4. Disc; 401. Adjusting hole; 402. Second threaded hole; 5. Handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Example:

[0025] Reference Figures 1-4 A special tool for lifting valve stem includes a flange plate 1 mounted on a valve body, with multiple fixing holes on the flange plate 1, preferably two to eight, to facilitate fixing the flange plate 1 to the connecting flange of the valve body with bolts. It also includes an adjusting screw 2 for driving the valve stem to rise and fall, mounted on the flange plate 1. An adjusting seat 102 is fixedly mounted on the top of the flange plate 1 via multiple support plates 101, with two to six support plates 101, preferably three, evenly distributed circumferentially. The adjusting screw 2 is threadedly connected to the adjusting seat 102. A handle 5 is provided at one end of the adjusting screw 2 for driving its rotation. The other end of the adjusting screw 2 is connected to the top of the valve stem via a connector. When the adjusting screw 2 is driven to rotate, the adjusting screw 2... The valve stem is raised and lowered via the connector. During use, the flange plate 1 is fixed to the valve body. At this time, the top of the valve stem passes through the central hole of the flange plate 1 and extends between multiple support plates 101. Then, the top of the valve stem is connected to the other end of the adjusting screw 2 via the connector. When the adjusting screw 2 is driven to rotate towards the flange plate 1, the adjusting screw 2 can push the valve stem into the valve body. Conversely, when the adjusting screw 2 is driven to unscrew from the adjusting seat 102, it can move the valve stem out of the valve body via the connector. Through the above operations, the valve body is opened and closed. Here, because the valve stem is stuck due to scale buildup, the driving force for moving the valve stem is relatively large. Therefore, it is necessary to first rotate the adjusting screw 2 to push the valve stem inward. After the valve stem can move, it slides upward via the adjusting screw 2.

[0026] In use, a flange plate 1 is installed on the valve body, and an adjusting seat 102 is fixedly installed on the flange plate 1. An adjusting screw 2 is threadedly connected to the adjusting seat 102. The adjusting screw 2 is driven to rotate towards the flange plate 1. The bottom of the adjusting screw 2 abuts against the top of the valve stem, which can push the valve stem into the valve body. When the adjusting screw 2 is rotated in the opposite direction, it can carry the valve stem up through the connecting piece, which facilitates the movement of the valve stem to open or close the valve and improves the performance.

[0027] Reference Figure 4Here, the connector is designed as a first sleeve 3 and a second sleeve 301. Both the first sleeve 3 and the second sleeve 301 are cylindrical structures of revolution. A limiting hole is opened in the first sleeve 3, and a limiting ring is slidably set in the limiting hole. One end of the second sleeve 301 extending into the limiting hole is fixedly connected to the limiting ring. The second sleeve 301 can rotate within the first sleeve 3. A step is fixedly set at one end of the valve stem located in the limiting hole, and multiple first bolts 303 are threadedly connected to the first sleeve 3. There are two to six first bolts 303, preferably four. One end of the first bolt 303 extending into the limiting hole abuts against the outer wall of the valve stem, preferably against the bottom of the step, and the second... The inner diameter of the sleeve 301 is larger than the outer diameter of the step. The other end of the adjusting screw 2 is fixed inside the second sleeve 301 by the second bolt, and the other end of the adjusting screw 2 abuts against the top end face of the step. In use, by driving the adjusting screw 2 to move towards the flange plate 1, the adjusting screw 2 slides the second sleeve 301 downwards. The bottom of the adjusting screw 2 abuts against the top end face of the valve stem step, which can push the valve stem into the valve body. Conversely, when the adjusting screw 2 is driven to unscrew from the adjusting seat 102, after passing through the limiting ring, the second sleeve 301 can pull the first sleeve 3 upwards, and the first sleeve 3 can carry the valve stem upwards through multiple first bolts 303, which facilitates the driving of the valve stem to rise and fall and improves the use effect.

[0028] Reference Figure 1 , Figure 2 and Figure 4 The second sleeve 301 has a first threaded hole 302 that penetrates the wall thickness, and the other end of the adjusting screw 2 has a through hole 202. The outer diameter of the adjusting screw 2 is smaller than the inner diameter of the second sleeve 301. The second bolt is passed through the through hole 202 and threaded into the first threaded hole 302. That is, the bottom of the adjusting screw 2 extends into the second sleeve 301. Then, the second bolt is rotated to pass through the through hole 202 and threaded into the first threaded hole 302, thus fixing the second sleeve 301 onto the adjusting screw 2.

[0029] Reference Figure 1 , Figure 2 and Figure 4 A hexagonal prism 201 is fixedly installed at one end of the adjusting screw 2, and a disc 4 is slidably installed at one end of the adjusting screw 2. An adjusting hole 401 matching the hexagonal prism 201 is opened on the disc 4. The axial section of the adjusting hole 401 is hexagonal, and the handle 5 is threadedly connected to the disc 4 at one end. In use, the adjusting hole 401 of the disc 4 is fitted onto the hexagonal prism 201, and then the disc 4 is driven to rotate by the handle 5. The disc 4 drives the adjusting screw 2 to rotate through the hexagonal prism 201, thereby improving the usage effect.

[0030] Reference Figure 1 , Figure 2 and Figure 4 Multiple second threaded holes 402 are provided on the circumference of the disc 4. There are two to eight second threaded holes 402, preferably six, which are evenly distributed around the circumference. The end of the second threaded hole 402 is opened on the plane of the hexagonal adjustment hole 401. A connecting screw is fixedly provided on one end of the handle 5. The connecting screw is connected to the internal thread of the second threaded hole 402. In use, by fixing the connecting screw on the handle 5 and opening the second threaded hole 402 on the disc 4, it is convenient to fix the handle 5 on the disc 4. Moreover, two handles 5 are symmetrically arranged to facilitate driving the disc 4 and the adjustment screw 2 to rotate, thereby improving the use effect. The handle 5 and the disc 4 are detachable, the disc 4 and the adjustment screw 2 are detachable, and the adjustment screw 2 can be detachably connected to the adjustment seat 102 and the second sleeve 301. It has a simple structure, is easy to replace when damaged, and improves the use effect.

[0031] Reference Figure 4 Connect the second threaded hole 402 to the adjustment hole 401. The end of the connecting screw extending into the adjustment hole 401 abuts against the side of the hexagonal prism 201. When tightening the handle 5, the connecting screw can abut against the side of the hexagonal prism 201, thereby fixing the disc 4 onto the hexagonal prism 201 and improving the performance.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A special tool for lifting valve stems, comprising a flange plate (1) mounted on the valve body, characterized in that, It also includes an adjusting screw (2) for driving the valve stem to rise and fall, which is disposed on the flange plate (1). The flange plate (1) is fixedly provided with an adjusting seat (102) on the top by multiple support plates (101). The adjusting screw (2) is threadedly connected to the adjusting seat (102). One end of the adjusting screw (2) is provided with a handle (5). The other end of the adjusting screw (2) is connected to the top of the valve stem through a connector. When the adjusting screw (2) is driven to rotate, the adjusting screw (2) moves up and down with the valve stem through the connector.

2. The special tool for lifting valve stems according to claim 1, characterized in that, The connector includes a first sleeve (3) and a second sleeve (301). A limiting hole is provided in the first sleeve (3), and a limiting ring is slidably provided in the limiting hole. One end of the second sleeve (301) extending into the limiting hole is fixedly connected to the limiting ring. A step is fixedly provided at one end of the valve stem located in the limiting hole. A plurality of first bolts (303) are threadedly connected to the first sleeve (3). One end of the first bolt (303) extending into the limiting hole abuts against the outer wall of the valve stem. The other end of the adjusting screw (2) is fixedly provided in the second sleeve (301) by a second bolt.

3. A special tool for lifting valve stems according to claim 2, characterized in that, The second sleeve (301) has a first threaded hole (302) that penetrates the wall thickness, and the other end of the adjusting screw (2) has a through hole (202). The second bolt passes through the through hole (202) and is internally threaded to the first threaded hole (302).

4. A special tool for lifting valve stems according to claim 1, characterized in that, One end of the adjusting screw (2) is fixedly provided with a hexagonal prism (201), and the other end of the adjusting screw (2) is slidably provided with a disc (4). The disc (4) has an adjusting hole (401) that matches the hexagonal prism (201), and one end of the handle (5) is threadedly connected to the disc (4).

5. A special tool for lifting valve stems according to claim 4, characterized in that, The disc (4) has multiple second threaded holes (402) on its circumference. One end of the handle (5) is fixedly provided with a connecting screw, which is threadedly connected to the second threaded hole (402).

6. A special tool for lifting valve stems according to claim 5, characterized in that, The second threaded hole (402) is connected to the adjustment hole (401), and one end of the connecting screw extending into the adjustment hole (401) abuts against the side of the hexagonal prism (201).

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