Butterfly valve combined overhauling device

Abstract

The application provides a disc valve combined overhauling device and relates to the technical field of disc valve maintenance.The device comprises a mounting block and clamping plates.A center groove is arranged at the middle position in the mounting block, and a movable block is movably arranged in the center groove.The top of the movable block is provided with a control motor, and the middle position at the bottom of the movable block is provided with a jacking assembly.The jacking assembly comprises a sleeve and a jacking rod, and the outer side of the jacking rod is provided with a guide strip.The two groups of clamping plates are used to clamp and fix the valve body at the flange position through the cooperation of the hooks.The position of the jacking assembly is adjusted by moving the movable block, and the fixed pin is lifted by the jacking assembly for dismounting.The valve body and the valve port are clamped by the two groups of clamping plates through the cooperation of the hooks, and then the valve body is fixed on the side.The position of the jacking assembly is adjusted by moving the movable block, and then the valve shaft is lifted for dismounting.When the device is installed, the disc plate is lifted into the valve body by the jacking assembly after being fixed above the valve body, so that the disc plate is installed.The device has the advantages of simple structure, convenient installation and convenient carrying.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of butterfly valve maintenance, and particularly relates to a combined maintenance device for butterfly valve. BACKGROUND

[0002] The thermal power plant, referred to as the thermal power plant, is a factory using coal, oil and natural gas as fuel to produce electric energy, and its basic production process is: fuel is burned in a boiler to heat water to steam, and the chemical energy of the fuel is converted into heat energy, the steam pressure drives the turbine to rotate, and the heat energy is converted into mechanical energy, and then the turbine drives the generator to rotate, and the mechanical energy is converted into electric energy. In daily maintenance and unit overhaul work, the existing thermal power plant needs to use the corresponding maintenance device to disassemble the disc plate and the valve body, the existing maintenance device needs to manually hold the maintenance device to fix the valve seat, it is difficult to apply force when manually holding the maintenance device, and it is difficult to disassemble, and generally, the maintenance device is large and inconvenient to carry.

[0003] The difficulties faced by the butterfly valve maintenance include:

[0004] 1: The fixed pin is firmly connected with the valve shaft, rust and inlay phenomenon exist, ordinary pin punches cannot be disassembled, and in the process of knocking, the safety risk hidden danger of hand injury exists in the operation process of the maintenance personnel;

[0005] 2: The valve shaft and the disc plate structure are tight, the shaft cannot be taken out of the valve body, forced removal may damage the shaft and the valve disc and the valve body, and the valve cannot be fixed, and the safety risk hidden danger exists in the operation process of the maintenance personnel;

[0006] 3: The disc plate and the valve body structure are tightly installed, the disc plate and the valve body cannot be disassembled, forced removal may damage the disc plate and the valve body, and the valve cannot be fixed, and the safety risk hidden danger exists in the operation process of the maintenance personnel;

[0007] 4: After the disc plate is cleaned, it cannot be installed into the valve body, the valve body is knocked, which may cause damage to the equipment and risk of personnel injury;

[0008] Therefore, the present application provides a combined maintenance device for butterfly valve to solve the problems in the prior art. SUMMARY

[0009] In view of the above problems, the present application provides a combined maintenance device for butterfly valve, which has the advantages of simple structure, convenient installation and convenient carrying, and is not affected by geographical environment and the like. For batch maintenance of butterfly valve, the work can be done twice as much with half the effort.

[0010] To achieve the purpose of the present application, the present application is realized by the following technical solutions: A butterfly valve combined overhauling equipment, comprising a mounting block and a clamping plate, a center groove is arranged at the middle position inside the mounting block, and a movable block is movably arranged in the center groove, a control motor is arranged at the top of the movable block, and a jacking assembly is arranged at the middle position of the bottom of the movable block, the jacking assembly comprises a sleeve and a jack rod, a guide strip is arranged on the outside of the jack rod, the inside of the sleeve is matched with the jack rod and the guide strip, the jack rod is movably inserted into the inside of the sleeve, a first screw rod is rotatably arranged in the inside of the sleeve and penetrates through the jack rod and is threadedly matched, and the output end of the control motor penetrates through the movable block and is connected with the first screw rod.

[0011] The bottom of the mounting block is provided with a driving part, the clamping plate is provided with two groups, and the two groups of clamping plates are movably arranged on the driving part, and a hook body is arranged below the inside of the clamping plate.

[0012] Further improvement lies in that the driving part comprises a first shaft plate and a second screw rod, the first shaft plate is arranged on both sides of the bottom of the mounting block, the second screw rod is provided with two groups, and the two groups of second screw rods are rotatably arranged at both ends of the inside of the first shaft plate, and the two groups of second screw rods penetrate through the two groups of clamping plates and are threadedly matched.

[0013] Further improvement lies in that first gears are rotatably arranged at both ends of the outside of the first shaft plate, the two groups of first gears are connected with the two groups of second screw rods, a second gear is rotatably arranged on the first shaft plate at the position between the two groups of first gears, the second gear is matched with the first gear, and a knob is arranged on the second gear.

[0014] Further improvement lies in that the clamping plate and the hook body are integrally formed, the inside of the clamping plate is provided with an inner arc surface, and the inner arc surface is matched with the outside of the butterfly valve.

[0015] Further improvement lies in that guide grooves are arranged at both ends of the inside of the center groove, and guide blocks are arranged at both ends of the movable block and are movably matched with the guide grooves.

[0016] Further improvement lies in that an embedding groove is arranged at the front end of the top of the mounting block, a worm gear is arranged in the inside of the embedding groove, an inner cavity is arranged at the front end of the inside of the movable block, a worm is rotatably arranged in the inside of the inner cavity, and the worm is matched with the worm gear.

[0017] Further improvement lies in that a first bevel gear is arranged on one side of the worm, a hand wheel is rotatably arranged on one side of the front end of the movable block, the rear end of the hand wheel extends into the inner cavity, and a second bevel gear matched with the first bevel gear is arranged at the rear end of the hand wheel.

[0018] Further improvement lies in that the second shaft plates are arranged on both sides of the top rear end of the mounting block, and the inner sides of the two groups of second shaft plates are provided with slide rods which are movably penetrated through the movable blocks.

[0019] Further improvement lies in that the control motor is provided with a control panel, and the control panel is provided with control buttons which are used for adjusting the start and stop of the control motor.

[0020] Further improvement lies in that the butterfly valve comprises a valve body, a valve shaft, a disc plate and fixing pins, the valve shaft is arranged in the valve body, the disc plate is fixed with the valve shaft through the fixing pins, two groups of clamping plates are used for being fixed above or on the side of the valve body through the hook bodies, the movable blocks are used for adjusting the position of the jacking assembly, and the jacking assembly is used for jacking up the fixing pins or the valve shaft for disassembly.

[0021] The butterfly valve provided by the application has the advantages that:

[0022] 1. The two groups of clamping plates are used for being fixed on the valve body through the hook bodies, the movable blocks are used for adjusting the position of the jacking assembly, the fixing pins are jacked up for disassembly through the jacking assembly, the valve body is clamped through the two groups of clamping plates and the hook bodies, the valve body is fixed on the side, the movable blocks are used for adjusting the position of the jacking assembly, the valve shaft is jacked up for disassembly, the disc plate is jacked into the valve body for installation through the jacking assembly when being installed above the valve body, and the structure is simple, installation is convenient, and carrying is convenient.

[0023] 2. The butterfly valve is not influenced by geographical environment and the like, and can achieve the effect of achieving the aim with half the effort for batch maintenance of the butterfly valve.

[0024] 3. The principle of the butterfly valve is simple, and the problem that the butterfly valve cannot be disassembled is solved for the butterfly valve with poor working conditions and seriously corrosive medium. DETAILED DESCRIPTION

[0025] Figure 1 is a front view of the butterfly valve;

[0026] Figure 2 is a schematic view of the jacking assembly of the butterfly valve;

[0027] Figure 3 is a schematic view of the inside of the movable block of the butterfly valve;

[0028] Figure 4 is a schematic view of the butterfly valve.

[0029] Wherein: 1, mounting block; 2, clamping plate; 3, center groove; 4, movable block; 5, control motor; 6, sleeve; 7, top rod; 8, guide bar; 9, first screw rod; 10, hook body; 11, first shaft plate; 12, second screw rod; 13, first gear; 14, second gear; 15, knob; 16, inner arc surface; 17, guide groove; 18, guide block; 19, worm gear; 20, worm; 21, first bevel gear; 22, hand wheel; 23, second bevel gear; 24, second shaft plate; 25, sliding rod; 26, control panel; 27, valve body; 28, valve shaft; 29, disc plate; 30, fixed pin. Embodiment

[0030] In order to deepen the understanding of the present application, the present application will be further described below in conjunction with examples, which are only used to explain the present application and do not constitute a limitation on the scope of protection of the present application. Example

[0031] According to Figure 1 , 2 , 3, 4, the present example proposes a butterfly valve combined maintenance equipment, which comprises a mounting block 1 and a clamping plate 2, a center groove 3 is arranged at the middle position inside the mounting block 1, and a movable block 4 is movably arranged in the center groove 3, a control motor 5 is arranged at the top of the movable block 4, and a jacking assembly is arranged at the middle position of the bottom of the movable block 4, the jacking assembly comprises a sleeve 6 and a top rod 7, a guide bar 8 is arranged on the outer side of the top rod 7, the inner side of the sleeve 6 is matched with the top rod 7 and the guide bar 8, the top rod 7 is movably inserted into the inside of the sleeve 6, a first screw rod 9 is rotatably arranged in the inside of the sleeve 6, and the first screw rod 9 penetrates through the top rod 7 and is threadedly matched, and the output end of the control motor 5 penetrates through the movable block 4 and is connected with the first screw rod 9;

[0032] The bottom of the mounting block 1 is provided with a driving part, the clamping plate 2 is provided with two groups, and the two groups of clamping plates 2 are movably arranged on the driving part, and the inner side of the clamping plate 2 is provided with a hook body 10 below. When in use, the fixed pin 30 is removed: the two groups of clamping plates 2 are driven to move by the driving part, and the flange is hooked by the hook body 10, so as to be clamped and fixed at the flange of the valve body 27, and the valve body 27 is connected and fixed, the jacking assembly is adjusted to the position of the fixed pin 30 by moving the movable block 4, the control motor 5 is started, the first screw rod 9 is rotated, the top rod 7 is extended out of the inside of the sleeve 6 in cooperation with the rotation-stopping guide bar 8, and the fixed pin 30 is topped, so as to remove the fixed pin 30.

[0033] Remove the valve shaft 28: drive the two groups of clamping plate 2 to move, cooperate with the hook body 10 hook valve body 27 valve, so fixed in the side, by moving the movable block 4 will be adjusted to the valve shaft 28 position of the lifting assembly, start control motor 5, drive the first screw rod 9 rotation, so that the top bar 7 cooperation guide bar 8 from the inside of the sleeve 6 extension, top to the valve shaft 28, thus remove the valve shaft 28.

[0034] Remove the disc plate 29: drive the two groups of clamping plate 2 to move, cooperate with the hook body 10 hook flange, so clamping fixed in the valve body 27 flange, with the valve body 27 connection fixed, by moving the movable block 4 will be adjusted to each position of the lifting assembly, start control motor 5, drive the first screw rod 9 rotation, so that the top bar 7 cooperation guide bar 8 from the inside of the sleeve 6 extension, top to the disc plate 29, thus remove the disc plate 29.

[0035] Install the disc plate 29: drive the two groups of clamping plate 2 to move, cooperate with the hook body 10 hook flange, so clamping fixed in the valve body 27 flange, with the valve body 27 connection fixed, by moving the movable block 4 will be adjusted to each position of the lifting assembly, start control motor 5, drive the first screw rod 9 rotation, so that the top bar 7 cooperation guide bar 8 from the inside of the sleeve 6 extension, top to the disc plate 29, thus achieve the disc plate 29 back to the valve body 27, then adjust the position of the valve shaft 28 into the disc plate 29, and then through the fixed pin 30, complete the back to the steps.

[0036] The drive part includes the first shaft plate 11 and the second screw rod 12, the first shaft plate 11 is arranged on both sides of the bottom of the mounting block 1, the second screw rod 12 is provided with two groups, and the two groups of the second screw rod 12 are rotatably arranged at the two ends of the inner side of the first shaft plate 11 respectively, and the two groups of the second screw rod 12 are threaded through the two groups of the clamping plate 2 and are adapted. The two ends of the outer side of the first shaft plate 11 are rotatably provided with the first gear 13, and the two groups of the first gear 13 are connected with the two groups of the second screw rod 12 respectively, the second gear 14 is rotatably arranged on the first shaft plate 11 at the position between the two groups of the first gear 13, the second gear 14 is adapted with the first gear 13, and the knob 15 is arranged on the second gear 14. The clamping plate 2 and the hook body 10 are integrally formed, the inner side of the clamping plate 2 is provided with the inner arc surface 16, and the inner arc surface 16 is adapted with the outer side of the butterfly valve. When in use, the knob is rotated to drive the second gear 14 to rotate, drive the two groups of the first gear 13 to rotate synchronously, drive the two groups of the clamping plate 2 to move, cooperate with the hook body 10 for fixing above or on the side of the valve body 27, when fixed above the valve body, the inner arc surface 16 is adapted with the outer side of the butterfly valve flange, so as to be fixed stably.

[0037] Both ends of the center groove 3 are provided with guide grooves 17, both ends of the movable block 4 are provided with guide blocks 18, and the guide blocks 18 are movably matched with the guide grooves 17. Thus, the movable block 4 cannot be separated from the center groove 3, and the movement is more stable.

[0038] The front end of the top of the mounting block 1 is provided with an embedding groove, and the inside of the embedding groove is provided with a worm gear 19. The front end of the inside of the movable block 4 is provided with an inner cavity, and the inside of the inner cavity is rotatably provided with a worm 20, which is matched with the worm gear 19. One side of the worm 20 is provided with a first bevel gear 21. One side of the front end of the movable block 4 is rotatably provided with a hand wheel 22, and the rear end of the hand wheel 22 extends into the inner cavity. The rear end of the hand wheel 22 is provided with a second bevel gear 23 matched with the first bevel gear 21. In use, rotating the hand wheel 22 drives the second bevel gear 23 to rotate, so that the first bevel gear 21 rotates, drives the worm 20 to rotate synchronously, matches with the worm gear 19, and drives the movable block 4 to move, so as to adjust the jacking assembly to a suitable position.

[0039] Both sides of the rear end of the top of the mounting block 1 are provided with second shaft plates 24, and the inner sides of the two groups of second shaft plates 24 are provided with slide rods 25, which movably penetrate the movable block 4. Thus, the movable block 4 cannot be separated from the center groove 3, and the movement is more stable.

[0040] The butterfly valve includes a valve body 27, a valve shaft 28, a disc plate 29, and a fixed pin 30. The valve shaft 28 is arranged in the valve body 27. The disc plate 29 is fixed with the valve shaft 28 through the fixed pin 30. Two groups of clamping plates 2 are matched with hook bodies 10 and are used for being fixed above or on the side of the valve body 27. The movable block 4 is used for adjusting the position of the jacking assembly. The jacking assembly is used for jacking up the fixed pin 30 or the valve shaft 28 for disassembly. Embodiment

[0041] According to Figure 1 , 2 , 4, the embodiment provides a butterfly valve combined overhauling device, which comprises a mounting block 1 and a clamping plate 2. The inside of the mounting block 1 is provided with a center groove 3 at the middle position. The movable block 4 is movably arranged in the center groove 3. The top of the movable block 4 is provided with a control motor 5. The bottom of the movable block 4 is provided with a jacking assembly at the middle position. The jacking assembly comprises a sleeve 6 and a top rod 7. The outside of the top rod 7 is provided with a guide strip 8. The inside of the sleeve 6 is matched with the top rod 7 and the guide strip 8. The top rod 7 is movably arranged in the inside of the sleeve 6. The inside of the sleeve 6 is rotatably provided with a first screw rod 9, and the first screw rod 9 penetrates the top rod 7 and is threadedly matched. The output end of the control motor 5 penetrates the movable block 4 and is connected with the first screw rod 9.

[0042] The bottom of the mounting block 1 is provided with a driving part, the clamping plates 2 are provided in two groups, and the two groups of clamping plates 2 are movably installed on the driving part, and the lower side of the inner side of the clamping plate 2 is provided with a hook body 10. In use, the fixed pin 30 is removed: the two groups of clamping plates 2 are driven to move by the driving part, the flange is hooked by the hook body 10, and the flange is clamped and fixed on the valve body 27, and is connected and fixed with the valve body 27, the jacking assembly is adjusted to the position of the fixed pin 30 by moving the movable block 4, the control motor 5 is started, the first screw rod 9 is driven to rotate, the top rod 7 is extended out of the sleeve 6 in cooperation with the rotation-stopping guide strip 8, and the top rod 7 is extended out of the sleeve 6 in cooperation with the rotation-stopping guide strip 8, so that the fixed pin 30 is removed.

[0043] The valve shaft 28 is removed: the two groups of clamping plates 2 are driven to move by the driving part, the valve port of the valve body 27 is hooked by the hook body 10, and the valve body 27 is fixed on the side, the jacking assembly is adjusted to the position of the valve shaft 28 by moving the movable block 4, the control motor 5 is started, the first screw rod 9 is driven to rotate, the top rod 7 is extended out of the sleeve 6 in cooperation with the rotation-stopping guide strip 8, and the top rod 7 is extended out of the sleeve 6 in cooperation with the rotation-stopping guide strip 8, so that the valve shaft 28 is removed.

[0044] The disc plate 29 is removed: the two groups of clamping plates 2 are driven to move by the driving part, the flange is hooked by the hook body 10, and the flange is clamped and fixed on the valve body 27, and is connected and fixed with the valve body 27, the jacking assembly is adjusted to each position by moving the movable block 4, the control motor 5 is started, the first screw rod 9 is driven to rotate, the top rod 7 is extended out of the sleeve 6 in cooperation with the rotation-stopping guide strip 8, and the top rod 7 is extended out of the sleeve 6 in cooperation with the rotation-stopping guide strip 8, so that the disc plate 29 is removed.

[0045] The disc plate 29 is installed: the two groups of clamping plates 2 are driven to move by the driving part, the flange is hooked by the hook body 10, and the flange is clamped and fixed on the valve body 27, and is connected and fixed with the valve body 27, the jacking assembly is adjusted to each position by moving the movable block 4, the control motor 5 is started, the first screw rod 9 is driven to rotate, the top rod 7 is extended out of the sleeve 6 in cooperation with the rotation-stopping guide strip 8, and the top rod 7 is extended out of the sleeve 6 in cooperation with the rotation-stopping guide strip 8, so that the disc plate 29 is installed in the valve body 27, then the valve shaft 28 is adjusted to pass through the disc plate 29, and then the fixed pin 30 is passed through, and the installation step is completed.

[0046] The control motor 5 is provided with a control panel 26, the control panel 26 is provided with a control button, and the control button is used to adjust the start and stop of the control motor 5. In use, the control point 5 is connected to the mains or the storage battery, the start and stop of the control motor 5 is adjusted by the control button, and the operation is convenient.

[0047] The butterfly valve includes a valve body 27, a valve shaft 28, a disc plate 29 and a fixing pin 30, the valve shaft 28 is arranged in the valve body 27, the disc plate 29 is fixed with the valve shaft 28 through the fixing pin 30, two groups of the clamping plates 2 cooperate with the hook bodies 10 to be fixed above or on the side of the valve body 27, the movable block 4 is moved to adjust the position of the jacking assembly, and the jacking assembly is used for jacking the fixing pin 30 or the valve shaft 28 to be disassembled.

[0048] The butterfly valve combined overhauling equipment is fixed on the valve body 27 through two groups of the clamping plates 2 cooperating with the hook bodies 10, the position of the jacking assembly is adjusted through the movable block 4, the fixing pin 30 is jacked to be disassembled, the valve port of the valve body 27 is clamped through two groups of the clamping plates 2 cooperating with the hook bodies 10, and then the valve body 27 is fixed on the side, the position of the jacking assembly is adjusted through the movable block 4, and the valve shaft 28 is jacked to be disassembled, when being installed, the disc plate 29 is jacked into the valve body 27 to be installed after being fixed above the valve body 27, and finally, the structure is simple, installation is convenient, carrying is convenient, is not influenced by geographical environment and the like, for batch overhauling butterfly valves, work can be done twice the result with half the effort, and the principle is simple, for the butterfly valves with poor working conditions and seriously corrosive medium, the problem that the butterfly valves cannot be disassembled is well solved.

[0049] The basic principle, main features and advantages of the present application are shown and described. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve combined overhauling device, comprising a mounting block (1) and a clamping plate (2), characterized in that: The middle position inside the mounting block (1) is provided with a center groove (3), and the center groove (3) is movably provided with a movable block (4), the top of the movable block (4) is provided with a control motor (5), and the middle position of the bottom of the movable block (4) is provided with a jacking assembly, the jacking assembly comprises a sleeve (6) and a top rod (7), the outer side of the top rod (7) is provided with a guide strip (8), the inner side of the sleeve (6) is matched with the top rod (7) and the guide strip (8), the top rod (7) is movably inserted into the sleeve (6), the first screw rod (9) is rotatably arranged in the sleeve (6), and the first screw rod (9) penetrates the top rod (7) and is threadedly matched, the output end of the control motor (5) penetrates the movable block (4) and is connected with the first screw rod (9); The bottom of the mounting block (1) is provided with a driving part, the clamping plate (2) is provided with two groups, and the two groups of clamping plates (2) are movably installed on the driving part, and the lower side of the inner side of the clamping plate (2) is provided with a hook body (10); The driving part comprises a first shaft plate (11) and a second screw rod (12), the first shaft plate (11) is arranged on both sides of the bottom of the mounting block (1), the second screw rod (12) is provided with two groups, and the two groups of second screw rods (12) are rotatably arranged at both ends of the inner side of the first shaft plate (11), respectively, and the two groups of second screw rods (12) penetrate the two groups of clamping plates (2) and are threadedly matched.

2. The butterfly valve combined inspection and repair apparatus according to claim 1, characterized in that: The outer side of the first shaft plate (11) is rotatably provided with a first gear (13) at both ends, and the two groups of first gears (13) are respectively connected with the two groups of second screw rods (12), and the second gear (14) is rotatably arranged on the first shaft plate (11) between the two groups of first gears (13), the second gear (14) is matched with the first gear (13), and the second gear (14) is provided with a knob (15).

3. The butterfly valve combined inspection and repair apparatus according to claim 1, characterized in that: The clamping plate (2) and the hook body (10) are integrally formed, the inner side of the clamping plate (2) is provided with an inner arc surface (16), and the inner arc surface (16) is matched with the outer side of the butterfly valve.

4. The butterfly valve combined inspection and repair apparatus according to claim 1, characterized in that: Both ends of the center groove (3) are provided with guide grooves (17), both ends of the movable block (4) are provided with guide blocks (18), and the guide blocks (18) are movably matched with the guide grooves (17).

5. The combination repair device for a butterfly valve according to claim 4, wherein: The front end of the top of the mounting block (1) is provided with an embedding groove, and the embedding groove is provided with a worm gear tooth (19) inside, the front end of the inside of the movable block (4) is provided with an inner cavity, and the inside of the inner cavity is rotatably provided with a worm (20), and the worm (20) is matched with the worm gear tooth (19).

6. The combined inspection and repair device for a butterfly valve according to claim 5, characterized in that: One side of the worm (20) is provided with a first bevel gear (21), one side of the front end of the movable block (4) is rotatably provided with a hand wheel (22), and the rear end of the hand wheel (22) extends into the inner cavity, and the rear end of the hand wheel (22) is provided with a second bevel gear (23) matched with the first bevel gear (21).

7. The combined inspection and repair device for a butterfly valve according to claim 6, characterized in that: Second shaft plates (24) are arranged on both sides of the top rear end of the mounting block (1), and slide rods (25) are arranged on the inner sides of the two groups of second shaft plates (24), and the slide rods (25) movably penetrate the movable blocks (4).

8. The butterfly valve combined inspection and repair apparatus according to claim 1, characterized in that: A control panel (26) is arranged on the control motor (5), and control buttons are arranged on the control panel (26), and the control buttons are used for adjusting the opening and closing of the control motor (5).

9. The butterfly valve combined inspection and repair apparatus according to claim 3, characterized in that: The butterfly valve comprises a valve body (27), a valve shaft (28), a disc plate (29) and a fixing pin (30), the valve shaft (28) is arranged in the valve body (27), the disc plate (29) is fixed with the valve shaft (28) through the fixing pin (30), two groups of clamping plates (2) are used for being fixed above or on the side of the valve body (27) in cooperation with the hook bodies (10), the movable blocks (4) are moved for adjusting the position of the jacking assembly, and the jacking assembly is used for jacking up the fixing pin (30) or the valve shaft (28) for disassembly.

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