Plug valve dismounting tool

Abstract

The invention relates to the technical field of plug valves, and discloses a plug valve dismounting tool which comprises a bottom plate, bottom plate fixing holes are formed in the top of the bottom plate, fixing frames are symmetrically and fixedly connected to the bottom of the bottom plate, a union flange is arranged at the top of the bottom plate, and the union flange is connected with the bottom plate through flange bolts and the bottom plate fixing holes. A flange bolt is arranged on the bottom plate, a flange nut is connected to the outer ring of the flange bolt in a threaded mode, a plug valve is arranged on the top of the bottom plate, the plug valve is connected with the union flange through a union nut, and a flange plate is arranged at one end of the plug valve. The height of the supporting rod is adjusted through the second adjusting assembly and the driving assembly, so that the flange plate is adjusted to be attached to or connected with the valve deck, the valve deck can be disassembled through a hydraulic wrench, adjustment and disassembly can be conveniently conducted according to the positions of valve decks of plug valves of different models, and the applicability of the plug valve disassembling tool is improved.

Description

Technical Field

[0001] This invention relates to the field of plug valve technology, specifically a plug valve disassembly tool. Background Technology

[0002] A plug valve is a rotary valve with a shut-off element or plunger-shaped component. It is opened or closed by rotating 90 degrees to connect or separate the passage on the plug from the passage on the valve body. The plug can be cylindrical or conical. In oil drilling and fracturing operations, plug valves are widely used due to their small installation space, simple operation, and rapid response. However, due to their structural characteristics, most plug valves use a trapezoidal thread connection between the bottom cover and the valve body.

[0003] When using existing plug valves, if disassembly and maintenance are required, a special wrench is usually used, and the valve is disassembled by manual hammering. During field use, due to environmental factors, the threads at the valve cover connection often become corroded. If the corrosion is severe, the valve cover will be difficult to disassemble, which will affect the maintenance and upkeep of the plug valve, making it impossible to replace its internal sealing rings and other vulnerable parts, thus affecting the normal operation of the plug valve. Summary of the Invention

[0004] The purpose of this invention is to provide a plug valve disassembly tool, which solves the problem in the prior art where the threads at the valve cover connection of the plug valve are corroded, making it difficult to disassemble, maintain, and replace vulnerable parts.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A plug valve disassembly tool includes: The base plate has a base plate fixing hole at the top and a fixing bracket symmetrically and fixedly connected to the bottom of the base plate. The top of the base plate is provided with a union flange, which is connected to the base plate through flange bolts and the base plate fixing hole. A flange nut is screwed onto the outer ring of the flange bolt. The top of the base plate is provided with a plug valve, which is connected to the union flange through a union nut. One end of the plug valve is provided with a flange. A support assembly is slidably connected to the top of the base plate and is used to provide support force for the support arm of the hydraulic wrench. The support assembly includes an adjustment component located outside the base plate and used to adjust the support position of the hydraulic wrench support arm.

[0006] A stabilizing mechanism is located on top of the base plate and serves to support the plug valve.

[0007] Preferably, the plug valve includes a valve body, one end of which is provided with a valve cover, one end of which has a valve cover removal hole, and the valve body is connected to a union flange via a union nut.

[0008] Preferably, the support assembly includes an adjusting plate symmetrically and slidably connected to the top of the base plate. A support column is fixedly connected to the top of the adjusting plate. An adjusting column is slidably connected to the inner cavity of the support column. A support rod is fixedly connected to the top of the adjusting column. A disassembly assembly is provided at the top of the support rod. A support baffle is fixedly connected to the top of the support rod. A central hole is opened through one end of the support baffle. The position of the adjusting column is adjusted by the adjusting assembly.

[0009] Preferably, the disassembly assembly includes a limiting ring fixedly connected to the top of the support rod. The limiting ring is connected to the top of the support rod by a connecting angle iron, which is bolted to the top of the support rod. The flange is located in the inner cavity of the limiting ring and is rotatably connected. One end of the flange has a flange strip hole, and one end of the flange is fixedly connected to the outer hexagon of the flange. The front port diameter of the limiting ring is smaller than that of the flange.

[0010] Preferably, the adjustment component includes symmetrically formed L-shaped adjustment grooves on the top of the base plate, an L-shaped adjustment block is slidably connected to the inner cavity of the L-shaped adjustment groove, the L-shaped adjustment block is fixedly connected to the adjustment plate, a limit groove is formed through both sides of the base plate, a limit stud is slidably connected to the inner cavity of the limit groove, the limit stud is fixedly connected to the L-shaped adjustment block, and a limit nut is threadedly connected to the outer ring of the limit stud.

[0011] Preferably, the second adjustment component includes a second limiting groove that extends through one side of the support column, a second limiting stud that is slidably connected to the inner cavity of the second limiting groove, a second limiting nut that is threaded to the outer ring of the second limiting stud, and an adjustment screw hole that extends through the top of the adjustment column.

[0012] Preferably, the inner cavity of the adjusting screw hole is threaded with an adjusting stud, the adjusting stud passes through the L-shaped adjusting block and the two are rotatably connected, the intersection of the adjusting stud and the L-shaped adjusting block is limited by a limiting bearing and is rotatably connected, the inner wall of the L-shaped adjusting groove is provided with a movable groove, the adjusting stud passes through the movable groove and the two are movably connected, and the adjusting stud is controlled by a drive assembly.

[0013] Preferably, the drive assembly includes a linkage sprocket fixedly connected to the outer ring of the bottom of the adjusting stud, the linkage sprocket being connected via a linkage chain, and a handwheel fixedly connected to the outer ring of the bottom of one side of the adjusting stud, with the threads on the outside of the adjusting stud having the same direction.

[0014] Preferably, the stabilizing mechanism includes a support plate located at the top of the base plate, a pad fixedly connected to the top of the support plate, a movable groove formed at the top of the base plate, a movable block slidably connected to the inner cavity of the movable groove, and a U-shaped seat fixedly connected to the bottom of the support plate and the top of the movable block.

[0015] Preferably, the inner cavity of the movable groove is rotatably connected to a bidirectional lead screw, the bidirectional lead screw passes through the bottom plate and the intersection of the two is limited by a bearing and rotatably connected, the bidirectional lead screw passes through the movable block and the two are threadedly connected, the movable block and the support plate are connected by a cross frame, the two ends of the cross frame are rotatably connected to the inner cavity of the U-shaped seat, and an adjusting handwheel is fixedly connected to one side of the bidirectional lead screw.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. In this invention, after adjusting the horizontal position of the support component by adjusting the L-shaped adjusting seat and L-shaped adjusting groove in the first adjusting component, the height of the support rod is adjusted by the second adjusting component and the driving component, thereby adjusting the flange to fit and connect with the valve cover. This allows the valve cover to be disassembled using a hydraulic wrench, making it convenient to adjust and disassemble the valve cover according to the position of different models of plug valves, thus improving the applicability of this plug valve disassembly tool.

[0017] 2. In this invention, the angle of the cross frame is adjusted by adjusting the position of the moving block in the moving groove of the stabilizing mechanism, thereby adjusting the position of the support plate. The pad is then used to support the plug valve from the bottom, improving stability and reducing the pressure between the valve body and the union flange, thereby increasing the service life of the plug valve disassembly tool.

[0018] 3. The present invention can provide a large disassembly torque through a hydraulic wrench, which can be used to disassemble the bottom valve cover of a severely corroded plug valve. Unlike traditional disassembly methods, this method avoids the dangers that may occur during the knocking process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the plug valve of the present invention; Figure 3 This is a schematic diagram of the structure of the support component of the present invention; Figure 4 This is a schematic diagram of the flange structure of the present invention; Figure 5 This is a cross-sectional view of the supporting component of the present invention; Figure 6 This is a cross-sectional view of the supporting component of the present invention; Figure 7This is a schematic diagram of the stabilizing mechanism of the present invention.

[0020] The components include: 1. Union flange; 2. Flange bolts; 3. Plug valve; 31. Valve body; 32. Valve cover; 321. Valve cover removal hole; 33. Union nut; 4. L-shaped adjusting groove; 5. Flange; 51. Flange strip hole; 52. Flange external hexagon; 6. Flange nut; 7. L-shaped adjusting block; 8. Adjusting handwheel; 9. Support assembly; 10. Base plate; 101. Base plate fixing hole; 11. Limiting groove one. ; 12. Limiting stud one; 13. Limiting nut one; 14. Limiting groove two; 15. Limiting stud two; 16. Limiting nut two; 17. Adjusting stud; 18. Adjusting screw hole; 19. Limiting bearing; 20. Linkage sprocket; 21. Linkage chain; 22. Handwheel; 23. Movable groove; 24. Support plate; 25. Pad plate; 26. Moving groove; 27. Moving block; 28. U-shaped seat; 29. ​​Cross frame.

[0021] 91. Support rod; 92. Support baffle; 93. Adjusting plate; 94. Support column; 95. Adjusting column; 96. Center hole; 97. Limiting ring; 98. Connecting angle iron. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1; Please see Figures 1-7 A plug valve disassembly tool, comprising: The base plate 10 has a base plate fixing hole 101 on its top. The bottom of the base plate 10 is symmetrically and fixedly connected to a fixing bracket. The top of the base plate 10 is provided with a union flange 1. The union flange 1 is connected to the base plate 10 through a flange bolt 2 and the base plate fixing hole 101. The outer ring of the flange bolt 2 is screwed with a flange nut 6. The top of the base plate 10 is provided with a plug valve 3. The plug valve 3 is connected to the union flange 1 through a union nut 33. One end of the plug valve 3 is provided with a flange 5. Support assembly 9 is slidably connected to the top of base plate 10 and is used to provide support force for the support arm of hydraulic wrench. Support assembly 9 includes adjustment assembly 1, which is located outside base plate 10 and is used to adjust the support position of hydraulic wrench support arm. A stabilizing mechanism is located on top of the base plate 10 and is used to support the plug valve 3.

[0024] The plug valve 3 includes a valve body 31, one end of which is provided with a valve cover 32, and one end of the valve cover 32 is provided with a valve cover removal hole 321. The valve body 31 is connected to the union flange 1 through a union nut 33.

[0025] The support assembly 9 includes an adjusting plate 93 symmetrically and slidably connected to the top of the base plate 10. A support column 94 is fixedly connected to the top of the adjusting plate 93. An adjusting column 95 is slidably connected to the inner cavity of the support column 94. A support rod 91 is fixedly connected to the top of the adjusting column 95. A disassembly assembly is provided at the top of the support rod 91. A support baffle 92 is fixedly connected to the top of the support rod 91. A central hole 96 is opened through one end of the support baffle 92. The position of the adjusting column 95 is adjusted by the adjusting assembly 95.

[0026] The disassembly assembly includes a limiting ring 97 fixedly connected to the top of the support rod 91. The limiting ring 97 is connected to the top of the support rod 91 via a connecting angle iron 98. The connecting angle iron 98 is bolted to the top of the support rod 91. The flange 5 is located in the inner cavity of the limiting ring 97 and is rotatably connected. One end of the flange 5 has a flange strip hole 51 through it. One end of the flange 5 is fixedly connected to the flange external hexagon 52. The front port diameter of the limiting ring 97 is smaller than that of the flange 5.

[0027] The adjustment assembly includes L-shaped adjustment grooves 4 symmetrically opened on the top of the base plate 10. An L-shaped adjustment block 7 is slidably connected to the inner cavity of the L-shaped adjustment groove 4. The L-shaped adjustment block 7 is fixedly connected to the adjustment plate 93. Limiting grooves 11 are opened through both sides of the base plate 10. Limiting studs 12 are slidably connected to the inner cavity of the limiting grooves 11. Limiting studs 12 are fixedly connected to the L-shaped adjustment block 7. Limiting nuts 13 are threadedly connected to the outer ring of the limiting studs 12.

[0028] The second adjustment component includes a second limiting groove 14 that extends through one side of the support column 94. The inner cavity of the second limiting groove 14 is slidably connected to a second limiting stud 15. The outer ring of the second limiting stud 15 is threadedly connected to a second limiting nut 16. The top of the adjustment column 95 is provided with an adjustment screw hole 18.

[0029] The inner cavity of the adjusting screw hole 18 is threaded with an adjusting stud 17. The adjusting stud 17 passes through the L-shaped adjusting block 7 and the two are rotatably connected. The intersection of the adjusting stud 17 and the L-shaped adjusting block 7 is limited by a limit bearing 19 and is rotatably connected. The inner wall of the L-shaped adjusting groove 4 is provided with a movable groove 23. The adjusting stud 17 passes through the movable groove 23 and the two are movably connected. The adjusting stud 17 is controlled by a drive assembly.

[0030] The drive assembly includes a linkage sprocket 20 fixedly connected to the bottom outer ring of the adjusting stud 17. The linkage sprocket 20 is connected via a linkage chain 21. A handwheel 22 is fixedly connected to the bottom outer ring of one side of the adjusting stud 17. The threads on the outside of the adjusting stud 17 are in the same direction.

[0031] The working principle of this invention is as follows: A union flange 1 is fixed to the top of the base plate 10 using flange bolts 2 and flange nuts 6, and through the fixing holes 101 on the base plate. Then, a plug valve 3, whose valve cover 32 needs to be removed, is placed on top of the union flange 1, with the valve cover 32 facing the flange 5. It is then connected to the union flange 1 using union nuts 33. The horizontal position of the flange 5 is adjusted using adjusting component one, and the height of the supporting component 9 is adjusted using adjusting component two, thereby adjusting the height of the flange 5 so that it fits tightly against the valve cover 32. This facilitates adjustment and removal of the valve cover according to the position of different models of plug valves. When the flange strip hole 51 is aligned with the valve cover removal hole 321... A pin is inserted through the flange slot 51 into the valve cover removal hole 321 to connect the two. Then, the hydraulic wrench is connected to the flange outer hexagon 52, and the support assembly 9 is placed below the hydraulic wrench so that the hydraulic wrench support arm rests on the support rod 91. When the hydraulic wrench is activated, the support rod 91 in the support assembly 9 provides support for the hydraulic wrench. The plug valve 3 is fixed to the base plate 10 by the union flange 1, flange bolts 2, and flange nuts 6. Therefore, the hydraulic wrench will apply torque to the bottom valve cover 32 of the plug valve 31 to remove the valve cover 32, thus achieving the purpose of removing the bottom valve cover of the plug valve. After the plug valve 3 is installed on the base plate 10, the L-shaped adjustment in the adjustment assembly is used to adjust the valve cover. In slot 4, the L-shaped adjusting block 7 moves the support assembly 9 toward the valve cover 32, bringing the flange 5 closer to the valve cover 32. During this process, the limiting stud 12 in the limiting slot 11 moves with the L-shaped adjusting block 7. After adjusting to the appropriate position, the limiting nut 13 is tightened to fix the position of the L-shaped adjusting block 7. Then, the handwheel 22 drives the adjusting stud 17, which, in conjunction with the linkage sprocket 20 and linkage chain 21, drives the adjusting stud 17 on the other side to rotate. Under the limiting of the limiting bearing 19 and the action of the adjusting screw hole 18, the adjusting column 95 in the support column cylinder 94 moves upward, thereby driving the support rod 91 and the flange 5 in the limiting ring 97 to move upward to the appropriate position, making it tightly attached to the valve cover 32. Next, during the process, the limiting stud 15 in the limiting groove 14 moves with the movement of the adjusting column 95. After adjusting to the appropriate position, the limiting nut 16 can be tightened to fix the position of the adjusting column 95, thereby improving the stability of the hydraulic wrench support arm supported by the support rod 91. Then, the valve cover 32 can be disassembled with the hydraulic wrench, which is convenient for adjusting and disassembling the valve cover according to the position of different models of plug valves, thus improving the applicability of this plug valve disassembly tool. If the specifications of the flange 5 are not suitable for the connection and disassembly of the current valve cover 32, the bolts can be unscrewed to separate the connecting angle iron 98 from the support rod 91, and then the limiting ring 97 can be removed and replaced along with the flange 5, further improving the applicability of this plug valve disassembly tool.

[0032] Example 2; Please see Figure 7 In this embodiment of the invention, the stabilizing mechanism includes a support plate 24 located at the top of the base plate 10, a pad 25 fixedly connected to the top of the support plate 24, a moving groove 26 opened at the top of the base plate 10, a moving block 27 slidably connected to the inner cavity of the moving groove 26, and a U-shaped seat 28 fixedly connected to the bottom of the support plate 24 and the top of the moving block 27.

[0033] The inner cavity of the movable groove 26 is rotatably connected to a two-way lead screw. The two-way lead screw passes through the base plate 10 and the intersection of the two is limited by a bearing and rotatably connected. The two-way lead screw passes through the movable block 27 and the two are threadedly connected. The movable block 27 and the support plate 24 are connected by a cross bracket 29. The two ends of the cross bracket 29 are rotatably connected to the inner cavity of the U-shaped seat 28. An adjusting handwheel 8 is fixedly connected to one side of the two-way lead screw.

[0034] The working principle of this invention is as follows: When the plug valve 3 is installed on the base plate 10, if the center of gravity of the plug valve 3 is unstable, the handwheel 8 can be adjusted in conjunction with the bearing to drive the double-acting screw to rotate, thereby adjusting the position of the moving block 27 in the moving groove 26. With the help of the U-shaped seat 28 and the cross bracket 29, the height of the support plate 24 can be adjusted so that the pad 25 contacts the plug valve 3, thereby achieving the purpose of supporting the plug valve 3, improving stability, and reducing the pressure between the valve body 31 and the union flange 1, thereby increasing the service life of this plug valve disassembly tool.

[0035] When using this plug valve disassembly tool, fix the union flange 1 to the top of the base plate 10 using flange bolts 2 and flange nuts 6, and with the help of the base plate fixing holes 101. Then, place the plug valve 3, whose valve cover 32 needs to be removed, on top of the union flange 1, with the valve cover 32 facing the flange 5. Connect it to the union flange 1 using union nuts 33. Then, adjust the horizontal position of the flange 5 using adjusting component one, and then adjust the height of the support component 9 using adjusting component two, thereby adjusting the height of the flange 5 so that the flange 5 is tightly against the valve cover 32. This facilitates adjustment and disassembly of the valve cover according to the position of different models of plug valves. When the flange slot 51 is connected to the... After aligning the valve cover mounting holes 321, a pin is inserted through the flange strip hole 51 into the valve cover mounting holes 321 to connect the two. Then, the hydraulic wrench is connected to the flange outer hexagon 52, and the support assembly 9 is placed below the hydraulic wrench so that the hydraulic wrench support arm is placed on the support rod 91. When the hydraulic wrench is started, the support rod 91 in the support assembly 9 provides support for the hydraulic wrench. The plug valve 3 is fixed to the base plate 10 by the union flange 1, flange bolts 2, and flange nuts 6. Therefore, the hydraulic wrench will apply torque to the bottom valve cover 32 of the plug valve 31 to disassemble the valve cover 32, thus achieving the purpose of disassembling the bottom valve cover of the plug valve.

[0036] After the plug valve 3 is installed on the base plate 10, the support assembly 9 is moved toward the valve cover 32 by the L-shaped adjusting block 7 in the L-shaped adjusting groove 4 in the adjusting assembly 1, so that the flange 5 is close to the valve cover 32. Then, the handwheel 22 drives the adjusting stud 17, which, together with the linkage sprocket 20 and the linkage chain 21, drives the adjusting stud 17 on the other side to rotate. Then, under the limiting bearing 19 and the action of the adjusting screw hole 18, the adjusting column 95 in the support column cylinder 94 moves upward, thereby driving the support rod 91 together with the limiting ring 97. Once the flange 5 inside is moved to a suitable position and tightly connected to the valve cover 32, the valve cover 32 can be disassembled using a hydraulic wrench. This facilitates adjustment and disassembly of the valve cover position according to different models of plug valves, improving the applicability of this plug valve disassembly tool. If the specifications of the flange 5 are not suitable for the connection and disassembly of the current valve cover 32, the bolts can be unscrewed to separate the connecting angle iron 98 from the support rod 91. Then, the limit ring 97 can be removed and replaced along with the flange 5, further improving the applicability of this plug valve disassembly tool.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool for disassembling a plug valve, characterized in that, include: The base plate (10) has a base plate fixing hole (101) on its top. The bottom of the base plate (10) is symmetrically connected to a fixing frame. The top of the base plate (10) is provided with a union flange (1). The union flange (1) is connected to the base plate (10) through a flange bolt (2) and the base plate fixing hole (101). The outer ring of the flange bolt (2) is screwed with a flange nut (6). The top of the base plate (10) is provided with a plug valve (3). The plug valve (3) is connected to the union flange (1) through a union nut (33). One end of the plug valve (3) is provided with a flange plate (5). A support assembly (9) is slidably connected to the top of the base plate (10) and is used to provide support force for the support arm of the hydraulic wrench. The support assembly (9) includes an adjustment assembly one located outside the base plate (10) and used to adjust the support position of the hydraulic wrench support arm. A stabilizing mechanism is located on top of the base plate (10) and is used to support the plug valve (3).

2. The plug valve disassembly tool according to claim 1, characterized in that: The plug valve (3) includes a valve body (31), one end of which is provided with a valve cover (32), and one end of the valve cover (32) is provided with a valve cover removal hole (321). The valve body (31) is connected to the union flange (1) through a union nut (33).

3. The plug valve disassembly tool according to claim 1, characterized in that: The support assembly (9) includes an adjustment plate (93) symmetrically and slidably connected to the top of the base plate (10). A support column (94) is fixedly connected to the top of the adjustment plate (93). An adjustment column (95) is slidably connected to the inner cavity of the support column (94). A support rod (91) is fixedly connected to the top of the adjustment column (95). A disassembly assembly is provided at the top of the support rod (91). A support baffle (92) is fixedly connected to the top of the support rod (91). A central hole (96) is opened through one end of the support baffle (92). The position of the adjustment column (95) is adjusted by the adjustment assembly.

4. A plug valve disassembly tool according to claim 3, characterized in that: The disassembly assembly includes a limiting ring (97) fixedly connected to the top of the support rod (91). The limiting ring (97) is connected to the top of the support rod (91) by a connecting angle iron (98). The connecting angle iron (98) is bolted to the top of the support rod (91). The flange (5) is located in the inner cavity of the limiting ring (97) and is rotatably connected. One end of the flange (5) has a flange strip hole (51) through it. One end of the flange (5) is fixedly connected to a flange outer hexagon (52). The front port diameter of the limiting ring (97) is smaller than that of the flange (5).

5. A plug valve disassembly tool according to claim 3, characterized in that: The adjustment assembly includes an L-shaped adjustment groove (4) symmetrically opened on the top of the base plate (10). An L-shaped adjustment block (7) is slidably connected to the inner cavity of the L-shaped adjustment groove (4). The L-shaped adjustment block (7) is fixedly connected to the adjustment plate (93). A limit groove (11) is opened through both sides of the base plate (10). A limit stud (12) is slidably connected to the inner cavity of the limit groove (11). The limit stud (12) is fixedly connected to the L-shaped adjustment block (7). A limit nut (13) is threadedly connected to the outer ring of the limit stud (12).

6. A plug valve disassembly tool according to claim 5, characterized in that: The second adjustment component includes a second limiting groove (14) that runs through one side of the support column (94). The inner cavity of the second limiting groove (14) is slidably connected to a second limiting stud (15). The outer ring of the second limiting stud (15) is threadedly connected to a second limiting nut (16). The top of the adjustment column (95) is provided with an adjustment screw hole (18).

7. A plug valve disassembly tool according to claim 6, characterized in that: The inner cavity of the adjusting screw hole (18) is threaded with an adjusting stud (17). The adjusting stud (17) passes through the L-shaped adjusting block (7) and the two are rotatably connected. The intersection of the adjusting stud (17) and the L-shaped adjusting block (7) is limited by a limiting bearing (19) and is rotatably connected. The inner wall of the L-shaped adjusting groove (4) is provided with a movable groove (23). The adjusting stud (17) passes through the movable groove (23) and the two are rotatably connected. The adjusting stud (17) is controlled by a drive assembly.

8. A plug valve disassembly tool according to claim 7, characterized in that: The drive assembly includes a linkage sprocket (20) fixedly connected to the bottom outer ring of the adjusting stud (17). The linkage sprocket (20) is connected by a linkage chain (21). A handwheel (22) is fixedly connected to the bottom outer ring of the adjusting stud (17) on one side. The threads on the outside of the adjusting stud (17) are in the same direction.

9. A plug valve disassembly tool according to claim 1, characterized in that: The stabilizing mechanism includes a support plate (24) located on top of the base plate (10), a pad (25) fixedly connected to the top of the support plate (24), a moving groove (26) opened on the top of the base plate (10), a moving block (27) slidably connected to the inner cavity of the moving groove (26), and a U-shaped seat (28) fixedly connected to the bottom of the support plate (24) and the top of the moving block (27).

10. A plug valve disassembly tool according to claim 9, characterized in that: The inner cavity of the movable groove (26) is rotatably connected to a bidirectional lead screw. The bidirectional lead screw passes through the bottom plate (10) and the two intersects through a bearing and are rotatably connected. The bidirectional lead screw passes through the movable block (27) and the two are threadedly connected. The movable block (27) and the support plate (24) are connected by a cross bracket (29). The two ends of the cross bracket (29) are rotatably connected to the inner cavity of the U-shaped seat (28). An adjusting handwheel (8) is fixedly connected to one side of the bidirectional lead screw.

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