A shock-absorbing butterfly valve

Abstract

The present invention relates to the technical field of butterfly valves, and discloses a shock-absorbing butterfly valve, including a shock-absorbing valve housing, a control valve plate is rotatably mounted inside the shock-absorbing valve housing, and a valve core assembly is fixedly mounted on the upper end of the shock-absorbing valve housing, and the valve core assembly and the control valve plate are connected to each other; the shock-absorbing valve housing is fixedly mounted with a connecting assembly by screws, and an expansion tube is fixedly mounted on the connecting assembly, and a fixed sleeve is fixedly mounted on the connecting assembly. The shock-absorbing butterfly valve, by adding an expansion tube on the left and right sides of the shock-absorbing valve housing, can achieve shock-absorbing protection for the shock-absorbing valve housing through the expansion tube, can achieve the purpose of fitting and fixing the rotating handle through the positioning stop rod, effectively avoid the situation that the valve plate rotates due to the large water flow pressure in the pipe, can fully discharge the residual water in the butterfly valve through the drain pipe, avoid the situation that the butterfly valve is rusted due to the residual water stains, and can achieve the fixing of the sealing cover plate through the extrusion plate, avoid the situation that the sealing cover plate falls off due to the water flow pressure when the butterfly valve is used.

Description

Technical Field

[0001] The invention relates to the technical field of butterfly valves, in particular to a shock-absorbing butterfly valve. Background Art

[0002] The butterfly valve is named because of the shape of its control valve plate, which is a disc-shaped butterfly plate. It achieves the purpose of opening and closing by rotating the disc-shaped butterfly plate in the valve body around the valve shaft, thereby controlling the flow of the medium in the pipeline. Therefore, butterfly valves are widely used in pipeline systems in chemical, petroleum, natural gas, food, pharmaceutical, metallurgy, water treatment and other industries.

[0003] At present, the patent with announcement number CN214999778U discloses a corrosion-resistant butterfly valve with shock-absorbing function, including a valve body, a shock-absorbing device and a mounting plate; one end of the shock-absorbing device is connected to the valve body, and the other end of the shock-absorbing device is connected to the mounting plate; the shock-absorbing device includes a mounting rod, a connecting assembly and an elastic member; one end of the connecting assembly is sleeved on one end of the mounting rod; one end of the elastic member is connected to one end of the mounting rod, and the other end of the elastic member is connected to one end of the connecting assembly; the other end of the connecting assembly is connected to the valve body; and the other end of the mounting rod is connected to the top surface of the mounting plate. The shock-absorbing device is installed at a position between the valve body and the mounting plate to alleviate the vibration between the valve body and the mounting plate. The elastic member in the shock-absorbing device is arranged inside the connecting assembly to protect the integrity of the elastic member and prevent the elastic member from being damaged by external factors; the upper end of the elastic member is connected to the connecting assembly, and the lower end of the elastic member is connected to the upper end of the mounting rod. The elastic member provides elastic force to alleviate the vibration caused by the passage of fluid in the pipeline and protect the normal operation of the butterfly valve.

[0004] However, the following problems still exist in the current use of butterfly valves:

[0005] The above-mentioned device protects the valve stem when in use, thereby achieving the purpose of reducing the shock of the valve stem. However, in actual use, the water flow is suddenly opened or closed, and the valve body is subjected to a greater impact. The valve body is fixedly installed on the pipeline, which causes a greater impact on the valve plate, affecting the service life of the valve plate. In addition, during use, the valve stem lacks a limiting structure, so with the continuous impact of the water flow, the valve plate is prone to slight rotation, thereby affecting the control effect of the butterfly valve. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a shock-absorbing butterfly valve, which achieves the purpose of shock-absorbing the valve body by arranging expansion tubes on the left and right sides of the valve body, avoids the water flow impact directly applied to the valve plate, and effectively improves the service life of the butterfly valve.

[0007] The present invention provides the following technical solution: a shock-absorbing butterfly valve, comprising a shock-absorbing valve housing, a control valve plate rotatably mounted inside the shock-absorbing valve housing, a valve core assembly fixedly mounted on the upper end of the shock-absorbing valve housing, and the valve core assembly and the control valve plate are connected to each other; a connecting assembly is fixedly mounted on the shock-absorbing valve housing by screws, an expansion tube is fixedly mounted on the connecting assembly, a fixed sleeve is fixedly mounted on the connecting assembly, a pulling spring is fixedly mounted inside the fixed sleeve, a shock-absorbing rod is fixedly mounted on the pulling spring, a fixed plate is fixedly mounted on the connecting assembly, and a position control screw is arranged on the fixed plate Rod, a clamping plate is installed on the control screw, the clamping plate is tightly fitted with the outer surface of the shock absorber valve housing, an additional plate is fixedly installed on the upper end of the fixed plate, and an electric telescopic rod is fixedly installed on the additional plate, a receiving plate is fixedly installed on the upper end of the electric telescopic rod, a positioning stop rod is slidably arranged on the receiving plate, a control plate is arranged on the receiving plate, a first spring is fixedly installed on the lower end of the control plate, and the first spring is fixedly installed on the receiving plate, a pressing rod is slidably arranged on the upper end of the receiving plate, a second spring is fixedly installed on the upper surface of the receiving plate, and the second spring and the pressing rod are connected to each other.

[0008] Furthermore, the valve core assembly includes a fixed shell, a rotating handle, a first bevel gear and a second bevel gear. The fixed shell is fixedly installed at the upper end position of the outer surface of the shock-absorbing valve shell, and the rotating handle is rotatably arranged at the front end position of the fixed shell. The rotating handle is fixedly connected to the first bevel gear, and the first bevel gear and the second bevel gear are meshed with each other. The second bevel gear is interconnected with the control valve plate through a rotating shaft arranged at the upper end of the control valve plate. Through the above structure, it is convenient to control the state of the control valve plate by rotating the rotating handle.

[0009] Furthermore, the connecting assembly includes a first flange and a second flange, the first flange is fixed to the shock-absorbing valve housing by screws arranged on its upper end, and the second flange is fixedly connected to one end of the expansion tube, the other end of the expansion tube is fixedly connected to the second flange, and the second flange is interconnected with the conveying pipeline by screws, the fixing sleeve is fixedly installed on the first flange, and the shock-absorbing rod is fixedly installed on the second flange. Through the above structure, it is convenient to install and fix the expansion tube and the shock-absorbing valve housing through the first flange, so as to achieve the purpose of shock-absorbing protection of the shock-absorbing valve housing.

[0010] Furthermore, a first threaded hole is provided in the middle position of the fixed plate, and two sliding grooves are provided on the fixed plate. The control screw is connected to the fixed plate through the first threaded hole provided on the fixed plate. A guide slide rod is slidably provided in the sliding groove provided on the fixed plate. The guide slide rod is symmetrically fixedly installed on the clamping plate. Through the above structure, the moving range of the clamping plate can be supported by the guide slide rod to prevent the clamping plate from rotating.

[0011] Furthermore, the clamping plate is configured as an arc-shaped plate structure, and the surface of the clamping plate is configured as a matte surface. A bearing is fixedly installed on the clamping plate, and the positioning screw forms a rotating mechanism with the clamping plate through the bearing installed on the clamping plate. Through the above structure, it is convenient to support the positioning screw without affecting the rotation of the positioning screw, and the rotation of the positioning screw can drive the clamping plate to move.

[0012] Furthermore, a through square groove is provided on the receiving plate, and the positioning stop rod is slidably connected to the receiving plate through the through square groove provided on the receiving plate. The positioning stop rod is arranged as an "I"-shaped cylindrical structure. Through the above structure, it is convenient to limit the positioning stop rod through the receiving plate so that the positioning stop rod can only move left and right within a certain range.

[0013] Furthermore, a guide slider is symmetrically installed at the lower end of the control panel, and the outer surface of the guide slider is set to be smooth. A slider groove is opened inside the receiving plate, and the guide slider is slidably connected to the receiving plate through the slider groove opened inside the receiving plate. Through the above structure, the control panel can be supported and limited under the action of the guide slider.

[0014] Furthermore, a connecting rod is fixedly installed at the lower end of the fixed plate, and a protective plate is fixedly installed at the lower end of the connecting rod, a second threaded hole is opened in the middle position of the protective plate, an adjusting screw is arranged in the second threaded hole opened on the protective plate, and an extrusion plate is fixedly installed at the upper end position of the adjusting screw. Through the above structure, the extrusion plate can be driven to move by rotating the adjusting screw.

[0015] Furthermore, a sealing cover plate is fitted on the upper end of the extrusion plate, and the sealing cover plate is tightly fitted on the lower end of the drain pipe, and the drain pipe passes through and is fixed at the lower end of the shock-absorbing valve housing. Through the above structure, the sealing cover plate can be supported by the extrusion plate, thereby preventing the sealing cover plate from falling off due to pressure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The shock-absorbing butterfly valve adds expansion tubes on the left and right sides of the shock-absorbing valve housing, and the expansion tubes can be used to provide shock-absorbing protection for the shock-absorbing valve housing, thereby preventing the valve plate from being subjected to a large impact due to the on and off of water flow, thereby achieving the purpose of protecting the valve plate and extending the service life of the butterfly valve. The positioning stop rod can be used to fit and fix the rotating handle, effectively preventing the valve plate from rotating due to the large water flow pressure in the pipe, and effectively ensuring the stability of the butterfly valve when in use. The residual water in the butterfly valve can be fully discharged through the drain pipe, preventing the inside of the butterfly valve from rusting due to residual water stains. The sealing cover plate can be fixed through the extrusion plate, preventing the sealing cover plate from falling off due to water flow pressure when the butterfly valve is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the shock absorbing valve housing of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the valve core assembly of the present invention;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the expansion tube of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the connection assembly of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the clamping plate of the present invention;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the adjusting screw of the present invention;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the receiving plate of the present invention;

[0025] Figure 8 This is a schematic diagram of the three-dimensional explosion structure of the control panel of the present invention;

[0026] Fig. 9 It is a schematic diagram of the three-dimensional explosion structure of the sealing cover plate of the present invention.

[0027] In the figure: 1. shock-absorbing valve housing; 2. control valve plate; 3. valve core assembly; 301. fixed housing; 302. rotating handle; 303. first bevel gear; 304. second bevel gear; 4. connecting assembly; 401. first flange; 402. second flange; 5. expansion tube; 6. fixed sleeve; 7. pulling spring; 8. shock-absorbing rod; 9. positioning screw; 10. clamping plate; 11. guide slide bar; 12. additional plate; 13. electric telescopic rod; 14. receiving plate; 15. positioning stop bar; 16. control plate; 17. guide slide bar; 18. first spring; 19. pressing rod; 20. second spring; 21. connecting rod; 22. protective plate; 23. adjusting screw; 24. extrusion plate; 25. sealing cover plate; 26. drain pipe; 27. fixing plate. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] See also Figure 1-Figure 9 The present invention provides a technical solution: a shock-absorbing butterfly valve, comprising a shock-absorbing valve housing 1, a control valve plate 2 is rotatably installed inside the shock-absorbing valve housing 1, and a valve core assembly 3 is fixedly installed on the upper end of the shock-absorbing valve housing 1, the valve core assembly 3 and the control valve plate 2 are connected to each other, the shock-absorbing valve housing 1 is fixedly installed with a connecting assembly 4 by screws, and an expansion tube 5 is fixedly installed on the connecting assembly 4, a fixed sleeve 6 is fixedly installed on the connecting assembly 4, a pulling spring 7 is fixedly installed inside the fixed sleeve 6, and a shock-absorbing rod 8 is fixedly installed on the pulling spring 7, the valve core assembly 3 comprises a fixed housing 301, a rotating handle 302, a first bevel gear 303 and a second bevel gear 304, the fixed housing 301 is fixedly installed at the upper end position of the outer surface of the shock-absorbing valve housing 1, and the rotating handle 302 is rotatably set At the front end of the fixed shell 301, the rotating handle 302 is fixedly connected to the first bevel gear 303, and the first bevel gear 303 is meshed with the second bevel gear 304, and the second bevel gear 304 is connected to the control valve plate 2 through the rotating shaft arranged at the upper end of the control valve plate 2. The connecting component 4 includes a first flange 401 and a second flange 402. The first flange 401 is fixed to the shock-absorbing valve shell 1 through screws arranged at its upper end, and the second flange 402 is fixedly connected to one end of the expansion tube 5, and the other end of the expansion tube 5 is fixedly connected to the second flange 402, and the second flange 402 is connected to the conveying pipeline through screws, the fixing sleeve 6 is fixedly installed on the first flange 401, and the shock-absorbing rod 8 is fixedly installed on the second flange 402.

[0030] When the butterfly valve needs to be installed and fixed, the shock-absorbing valve housing 1 is placed between the two sections of pipes that need to be connected, and then the second flange 402 is fixedly installed on the connected pipe by screws, and then the first flange 401 is fixedly installed on the shock-absorbing valve housing 1 by screws. Because an expansion tube 5 is arranged between the first flange 401 and the second flange 402, the expansion tube 5 can be installed and fixed at this time (the expansion tube 5 can be made of stainless steel, carbon steel, rubber, plastic and other materials according to needs, and the expansion tube 5 is arranged to have a corrugated structure, and the expansion tube 5 can be extended or compressed when subjected to force), that is, the shock-absorbing valve housing 1 can be protected by the expansion tube 5, and when the control valve plate 2 is opened or closed, the expansion tube 5 begins to deform, and as the expansion tube 5 deforms, the distance between the first flange 401 and the second flange 402 The first flange 401 and the second flange 402 are connected to each other, and the second bevel gear 304 is connected to the second bevel gear 304. At this time, the second bevel gear 304 starts to rotate, and because the second bevel gear 304 is coaxially connected to the control valve plate 2, the control valve plate 2 also starts to rotate. As the control valve plate 2 rotates, the on-off condition of the water flow can be controlled.

[0031] A fixing plate 27 is fixedly installed on the connecting component 4, and a position-controlling screw 9 is provided on the fixing plate 27, and a clamping plate 10 is installed on the position-controlling screw 9, and the clamping plate 10 is tightly fitted with the outer surface of the shock-absorbing valve housing 1, and an additional plate 12 is fixedly installed on the upper end of the fixing plate 27, and an electric telescopic rod 13 is fixedly installed on the additional plate 12, and a receiving plate 14 is fixedly installed on the upper end of the electric telescopic rod 13, and a positioning stopper rod 15 is slidably provided on the receiving plate 14, and a control plate 16 is provided on the receiving plate 14, and a first spring 18 is fixedly installed on the lower end of the control plate 16, and the first spring 18 is fixedly installed on the receiving plate 14, and a pressing rod 19 is slidably provided on the upper end of the receiving plate 14, and a second spring 20 is fixedly installed on the upper surface of the receiving plate 14, and the second spring 20 and the pressing rod 19 are connected to each other, fixed. A first threaded hole is provided in the middle of the plate 27, and two sliding grooves are provided on the fixed plate 27, a through square groove is provided on the receiving plate 14, and the positioning baffle 15 is slidably connected to the receiving plate 14 through the through square groove provided on the receiving plate 14, the positioning baffle 15 is arranged as an "I"-shaped cylindrical structure, a guide slider 17 is symmetrically installed at the lower end of the control plate 16, and the outer surface of the guide slider 17 is arranged to be smooth, a slider groove is provided inside the receiving plate 14, and the guide slider 17 is slidably connected to the receiving plate 14 through the slider groove provided inside the receiving plate 14, a connecting rod 21 is fixedly installed at the lower end of the fixed plate 27, and a protective plate 22 is fixedly installed at the lower end of the connecting rod 21, and a second threaded hole is provided in the middle of the protective plate 22.

[0032] When the rotating handle 302 needs to be rotated, the pressing rod 19 is pressed, and the pressing rod 19 begins to move in the direction close to the receiving plate 14. Because the second spring 20 is fixedly installed at the lower end of the pressing rod 19, the second spring 20 begins to be squeezed and deformed. Because the lower end of the pressing rod 19 fits with the control plate 16, the control plate 16 begins to move downward under the action of the guide slider 17. Because the first spring 18 is fixedly installed at the lower end of the control plate 16, the first spring 18 begins to be squeezed and deformed. When the upper inclined surface of the control plate 16 contacts the positioning stop rod 15, the positioning stop rod 15 is pulled to make the positioning stop rod 15 start to move to the right and fit with the inclined surface set at the upper end of the control plate 16 (the length of the upper inclined surface of the control plate 16 can be extended according to actual conditions), and then the pressing rod 19 is released, and the second spring 20 is pressed and deformed. Under the action of the recovery deformation of 20, the second spring 20 begins to push the pressing rod 19 to move away from the receiving plate 14, and then continues to move the positioning stop rod 15 to the right. At this time, the positioning stop rod 15 begins to continue pressing the control plate 16 downward until the positioning stop rod 15 moves to the right side of the receiving plate 14. At this time, the positioning stop rod 15 is no longer in contact with the groove provided on the rotating handle 302. At this time, the rotating handle 302 can be released and the rotating handle 302 can be rotated. When the control valve plate 2 is adjusted to a specified angle for long-term use or the control valve plate 2 is closed, the pressing rod 19 is pressed downward, and then the positioning stop rod 15 is moved to the left (the opposite of the above process) until the positioning stop rod 15 is in contact with the groove provided on the rotating handle 302. At this time, the rotating handle 302 can be installed and fixed.

[0033] The control screw 9 is connected to the fixed plate 27 through a first threaded hole opened on the fixed plate 27, and a guide slide bar 11 is slidably arranged in the sliding groove opened on the fixed plate 27, and the guide slide bar 11 is symmetrically fixedly installed on the clamping plate 10, the clamping plate 10 is arranged to be an arc-shaped plate structure, and the surface of the clamping plate 10 is arranged to be a matte surface, and a bearing is fixedly installed on the clamping plate 10, and the control screw 9 forms a rotating mechanism with the clamping plate 10 through the bearing installed on the clamping plate 10, and an adjusting screw 23 is arranged in the second threaded hole opened on the protective plate 22, and an extrusion plate 24 is fixedly installed on the upper end of the adjusting screw 23, and a sealing cover plate 25 is fitted on the upper end of the extrusion plate 24, and the sealing cover plate 25 is tightly fitted on the lower end of the drain pipe 26, and the drain pipe 26 is fixedly arranged at the lower end of the shock-absorbing valve housing 1 through the conduction.

[0034] When it is necessary to perform auxiliary fixation on the fixing plate 27, the positioning screw 9 is rotated, because the positioning screw 9 is connected to the fixing plate 27 through the first screw hole, and the positioning screw 9 is rotatably connected to the clamping plate 10. At this time, as the positioning screw 9 rotates, the clamping plate 10 begins to move under the action of the guide slide bar 11 until the clamping plate 10 is tightly fitted with the outer surface of the shock-absorbing valve housing 1. At this time, the shock-absorbing valve housing 1 and the fixing plate 27 can be auxiliaryly installed and fixed, and then the adjusting screw 23 is rotated, because the adjusting screw 23 is connected to the protective plate 22 through the second threaded hole opened on the protective plate 22. The two drain pipes 26 are connected to each other. At this time, as the adjusting screw 23 rotates, the extrusion plate 24 starts to move upward until the upper end of the extrusion plate 24 is tightly fitted with the lower end of the sealing cover plate 25, thereby achieving the purpose of pressing and fixing the sealing cover plate 25 and the drain pipe 26, and avoiding the sealing cover plate 25 to fall off due to excessive water pressure during the subsequent water diversion process. The drain pipe 26 can be opened for a period of time when not in use for a long time, so as to drain the residual water and water stains in the shock-absorbing valve housing 1 and accelerate their evaporation, and avoid water remaining in the shock-absorbing valve housing 1 for a long time, which causes the shock-absorbing valve housing 1 to rust.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A damping butterfly valve, comprising a damping valve housing (1), a control valve plate (2) rotatably mounted inside the damping valve housing, a valve core assembly (3) fixedly mounted on the upper end of the damping valve housing (1), the valve core assembly (3) and the control valve plate (2) being connected to each other; characterized in that: Also includes: The shock absorbing valve housing (1) is fixedly mounted with a connecting assembly (4) by means of screws, and an expansion tube (5) is fixedly mounted on the connecting assembly (4), a fixing sleeve (6) is fixedly mounted on the connecting assembly (4), a pulling spring (7) is fixedly mounted inside the fixing sleeve (6), and a shock absorbing rod (8) is fixedly mounted on the pulling spring (7), a fixing plate (27) is fixedly mounted on the connecting assembly (4), a positioning screw (9) is provided on the fixing plate (27), a clamping plate (10) is mounted on the positioning screw (9), the clamping plate (10) is tightly fitted with the outer surface of the shock absorbing valve housing (1), an additional plate (12) is fixedly mounted on the upper end of the fixing plate (27), and an electric telescopic rod ( 13), a receiving plate (14) is fixedly installed on the upper end of the electric telescopic rod (13), and a positioning stop rod (15) is slidably provided on the receiving plate (14), until the positioning stop rod (15) fits into a groove provided on the rotating handle (302), at which time the rotating handle (302) can be installed and fixed, a control plate (16) is provided on the receiving plate (14), a first spring (18) is fixedly installed on the lower end of the control plate (16), and the first spring (18) is fixedly installed on the receiving plate (14), a pressing rod (19) is slidably provided on the upper end of the receiving plate (14), a second spring (20) is fixedly installed on the upper surface of the receiving plate (14), and the second spring (20) and the pressing rod (19) are connected to each other; The valve core assembly (3) comprises a fixed housing (301), a rotating handle (302), a first bevel gear (303) and a second bevel gear (304); the fixed housing (301) is fixedly mounted at an upper position of an outer surface of the damping valve housing (1); the rotating handle (302) is rotatably arranged at a front end of the fixed housing (301); the rotating handle (302) is fixedly connected to the first bevel gear (303); the first bevel gear (303) and the second bevel gear (304) are meshedly connected to each other; and the second bevel gear (304) is connected to the control valve plate (2) via a rotating shaft arranged at an upper end of the control valve plate (2); The receiving plate (14) is provided with a through square groove, and the positioning stop rod (15) is slidably connected to the receiving plate (14) through the through square groove provided on the receiving plate (14), and the positioning stop rod (15) is configured as an "I"-shaped cylindrical structure; A guide slider (17) is symmetrically mounted at the lower end of the control plate (16), and the outer surface of the guide slider (17) is set to be smooth. A slider groove is provided inside the receiving plate (14), and the guide slider (17) is slidably connected to the receiving plate (14) through the slider groove provided inside the receiving plate (14).

2. A shock-absorbing butterfly valve according to claim 1, characterized in that: The connection assembly (4) comprises a first flange (401) and a second flange (402), the first flange (401) being fixed to the shock absorbing valve housing (1) by means of screws arranged at the upper end thereof, the second flange (402) being fixedly connected to one end of the expansion tube (5), the other end of the expansion tube (5) being fixedly connected to the second flange (402), and the second flange (402) being connected to the conveying pipeline by means of screws, the fixing sleeve (6) being fixedly mounted on the first flange (401), and the shock absorbing rod (8) being fixedly mounted on the second flange (402).

3. The shock-absorbing butterfly valve according to claim 1, characterized in that: A first threaded hole is provided in the middle of the fixing plate (27), and two sliding grooves are provided on the fixing plate (27). The control screw (9) is connected to the fixing plate (27) through the first threaded hole provided on the fixing plate (27). A guide slide bar (11) is slidably provided in the sliding groove provided on the fixing plate (27), and the guide slide bar (11) is symmetrically fixedly mounted on the clamping plate (10).

4. The shock-absorbing butterfly valve according to claim 1, characterized in that: The clamping plate (10) is configured as an arc-shaped plate-like structure, and the surface of the clamping plate (10) is configured as a matte surface. A bearing is fixedly mounted on the clamping plate (10), and the control screw (9) forms a rotating mechanism with the clamping plate (10) through the bearing mounted on the clamping plate (10).

5. The shock-absorbing butterfly valve according to claim 1, characterized in that: A connecting rod (21) is fixedly mounted on the lower end of the fixing plate (27), and a protective plate (22) is fixedly mounted on the lower end of the connecting rod (21). A second threaded hole is provided in the middle of the protective plate (22), an adjusting screw (23) is provided in the second threaded hole provided on the protective plate (22), and an extrusion plate (24) is fixedly mounted on the upper end of the adjusting screw (23).

6. A shock-absorbing butterfly valve according to claim 5, characterized in that: The upper end of the extrusion plate (24) is fitted with a sealing cover plate (25), which is tightly fitted on the lower end of the drainage pipe (26), and the drainage pipe (26) passes through and is fixedly arranged at the lower end of the shock absorbing valve housing (1).

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