High-sealing-performance butterfly valve with damping function

Abstract

The utility model relates to the technical field of butterfly valves, and provides a high-sealing butterfly valve with a damping function, which comprises a valve body, damping components are arranged at the upper end and the lower end of one side in the valve body, a valve rod extending into the valve body is rotatably connected to the other side of the top end of the valve body, and a valve plate is fixedly connected into the valve body on the surface of the valve rod. The top end of the valve rod is movably connected with a valve wheel, and a mounting assembly is arranged at the lower end of one side of the valve wheel. According to the high-sealing-performance butterfly valve with the damping function, the damping assembly is arranged, a buffer plate is used for making contact with a medium firstly, then a damping spring and a damper are used for absorbing and consuming impact energy generated by movement of the buffer plate, and therefore the flowing impact force of the medium can be relieved, and excessive friction abrasion between the valve plate and the valve body caused by impact of the medium on the valve plate is avoided; and therefore, the sealing performance can be prevented from being reduced, and the service life of the valve body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, and in particular to a high-sealing butterfly valve with a shock-absorbing function. Background Art

[0002] With the increasing popularity and development of pipeline systems, the demand for valves is also increasing. Butterfly valve is a type of valve. It is a simple regulating valve. It is generally disc-shaped and can be turned on and off by rotating around the valve axis. It is often used to control the switching of media such as air, water, steam, and oil. With the development of society, higher requirements are also made on the performance of butterfly valves.

[0003] A Chinese patent discloses a high-sealing butterfly valve with a shock-absorbing function, with the publication number CN217177443U. The article proposes "comprising a butterfly valve body, a valve stem with a handwheel arranged on the butterfly valve body, and an anti-collision device arranged on the butterfly valve body for protecting the valve stem from being damaged by foreign objects, the anti-collision device comprising an anti-collision enclosure arranged on the outer surface of the butterfly valve body and located outside the valve stem, a sealing cover detachably arranged on the anti-collision enclosure for sealing the valve stem in the anti-collision enclosure, the anti-collision enclosure being arranged on the outer surface of the butterfly valve body and located outside the valve stem, and the sealing cover being detachably arranged on the anti-collision enclosure The stopper is used to seal the valve stem in the anti-collision enclosure. The cooperation of the anti-collision enclosure and the sealing cover can protect the valve stem with a handwheel, so that the valve stem is not easily damaged by impact from foreign objects, and can effectively protect the valve stem, which is beneficial to the long-term use of the butterfly valve. However, the existing technology can protect the valve stem very well, but during the use of the butterfly valve, the valve plate will be collided by the impact force generated by the flow of the medium for a long time. When the impact force is large, the valve plate and the valve body will be squeezed hard, thereby causing excessive friction between the valve plate and the valve body, affecting the sealing of the butterfly valve itself and its service life. Therefore, it is very necessary to design a high-sealing butterfly valve with shock absorption function. Utility Model Content

[0004] The utility model aims to provide a high-sealing butterfly valve with a shock-absorbing function, which solves the problem in the related art that the valve plate is easily impacted by the medium and affects the sealing and service life of the butterfly valve itself.

[0005] The technical solution of the utility model is as follows:

[0006] A high-sealing butterfly valve with a shock-absorbing function comprises a valve body, wherein the upper and lower ends of one side of the interior of the valve body are provided with shock-absorbing assemblies, the other side of the top end of the valve body is rotatably connected to a valve stem extending to the interior of the valve body, a valve plate is fixedly connected to the interior of the valve body on the surface of the valve stem, the top end of the valve stem is movably connected to a valve wheel, and the lower end of one side of the valve wheel is provided with a mounting assembly.

[0007] The shock absorbing assembly includes a reserved groove, which is opened at the upper and lower ends of one side of the inner wall of the valve body, a damper is fixedly connected to one side of the inner wall of the reserved groove, a sliding block is fixedly connected to one end of the damper, a shock absorbing spring is wound around the damper surface on one side of the sliding block, one end of the shock absorbing spring is fixedly connected to the inner wall of the reserved groove, and one end of the sliding block is fixedly connected to a buffer plate extending to the outside of the reserved groove.

[0008] Preferably, the buffer plate has an inclination angle of twenty-five degrees with respect to the vertical direction, and through grooves are provided on the buffer plate at equal intervals.

[0009] Preferably, a sliding structure is formed between the sliding block and the inside of the reserved groove, and the cross-section of the sliding block and the reserved groove is convex.

[0010] Preferably, the mounting assembly includes a fixing groove, which is opened at the lower end of one side inside the valve wheel, and one side inside the fixing groove is movably connected with a mounting block extending to the inside of the valve wheel, one end of the mounting block is fixedly connected with a pull rod extending to the outside of the fixing groove, and a mounting spring is wound around the surface of the pull rod at one end of the mounting block, one end of the mounting spring is fixedly connected to the inner wall of the fixing groove, and a mounting hole is opened at the upper end of one side of the valve stem.

[0011] Preferably, a snap-fit ​​structure is formed between one end of the mounting block and the interior of the mounting hole, and the length of the mounting block is smaller than the depth of the interior of the fixing groove.

[0012] Preferably, a limiting groove is provided on the inner wall of the fixing groove, and a limiting block which is slidably matched with the inside of the limiting groove is fixedly connected to the top and bottom ends of one side of the mounting block.

[0013] Preferably, a slot is provided on one side of the top end of the valve stem, and a clip strip slidably engaged with the inside of the slot is fixedly connected to one side of the inner wall of the valve wheel.

[0014] Preferably, sealing rings are fixedly connected to both sides of the inner wall of the valve body, and the cross-section of the sealing ring is in an O-shape.

[0015] Beneficial effects of the utility model:

[0016] 1. Through the provided shock-absorbing assembly, when the medium suddenly flows too fast, the buffer plate will slide, causing the sliding block to slide inside the reserved groove to compress the shock-absorbing spring and the damper, and then the buffer plate, the shock-absorbing spring and the damper can absorb and consume the impact force generated by the sudden and rapid flow of the medium, thereby achieving buffering and shock reduction of the valve plate, avoiding excessive friction and wear between the valve plate and the valve body caused by excessive impact force, thereby reducing its sealing performance and the service life of the valve body itself, thereby avoiding the adverse effects caused by the flow of the medium and improving its practicality.

[0017] 2. By setting the installation components, clamping strips and clamping slots, utilizing the clamping engagement between the clamping strips and the inside of the clamping slots, and then utilizing the elastic force of the installation springs, the installation block can be engaged or disengaged with the inside of the installation hole, thereby enabling quick disassembly and assembly between the valve wheel and the valve stem, making it easy to rotate the valve stem after installation, or replace the valve wheel after it is damaged. Furthermore, after the valve wheel is disassembled, it can be prevented from being rotated by non-staff members, thereby improving the safety of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the utility model when viewed from above;

[0022] Figure 4 It is a schematic diagram of a partial enlarged cross-section of the valve wheel of the utility model;

[0023] Figure 5 It is a partial cross-sectional enlarged structural schematic diagram of the shock absorbing component of the utility model;

[0024] Figure 6 For the utility model Figure 4 Enlarged structural diagram at A in the middle.

[0025] In the figure: 1. Installation assembly; 101. Installation hole; 102. Limiting groove; 103. Limiting block; 104. Installation block; 105. Installation spring; 106. Pull rod; 107. Fixed groove; 2. Valve body; 3. Shock-absorbing assembly; 301. Buffer plate; 302. Sliding block; 303. Reserved groove; 304. Shock-absorbing spring; 305. Damper; 4. Sealing ring; 5. Valve plate; 6. Valve stem; 7. Valve wheel; 8. Clip strip; 9. Clip groove. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] The preferred embodiment of the high-sealing butterfly valve with shock-absorbing function provided by the utility model is as follows: Figures 1 to 6 As shown: a high-sealing butterfly valve with a shock-absorbing function, including a valve body 2, a shock-absorbing assembly 3 is arranged at the upper and lower ends of one side of the interior of the valve body 2, a valve stem 6 extending to the interior of the valve body 2 is rotatably connected to the other side of the top end of the valve body 2, a valve plate 5 is fixedly connected to the interior of the valve body 2 on the surface of the valve stem 6, a valve wheel 7 is movably connected to the top end of the valve stem 6, and a mounting assembly 1 is arranged at the lower end of one side of the valve wheel 7.

[0029] The shock absorbing assembly 3 includes a reserved groove 303, which is provided at the upper and lower ends of one side of the inner wall of the valve body 2. A damper 305 is fixedly connected to one side of the inner wall of the reserved groove 303, and one end of the damper 305 is fixedly connected to a sliding block 302. A shock absorbing spring 304 is wound around the surface of the damper 305 on one side of the sliding block 302. One end of the shock absorbing spring 304 is fixedly connected to the inner wall of the reserved groove 303, and one end of the sliding block 302 is fixedly connected to a buffer plate 301 extending to the outside of the reserved groove 303. The buffer plate 301, the shock absorbing spring 304 and the damper 305 absorb and consume the impact force generated by the sudden and rapid flow of the medium, so as to achieve buffering and shock absorption of the valve plate 5, avoid excessive friction and wear between the valve plate 5 and the valve body 2 caused by excessive impact force, thereby reducing its sealing performance and reducing the service life of the valve body 2 itself.

[0030] In this embodiment, the buffer plate 301 is inclined at an angle of 25 degrees to the vertical direction. Through grooves are provided at equal intervals on the buffer plate 301. The inclined buffer plate 301 is used to facilitate buffering and guiding of the medium.

[0031] In this embodiment, a sliding structure is formed between the sliding block 302 and the inside of the reserved groove 303. The cross-section of the sliding block 302 and the reserved groove 303 is convex. The sliding of the convex sliding block 302 and the inside of the reserved groove 303 is used to improve the smoothness of the sliding of the buffer plate 301.

[0032] Example 2

[0033] On the basis of Example 1, a preferred embodiment of the high sealing butterfly valve with a shock absorbing function provided by the utility model is as follows: Figures 1 to 6As shown: the installation component 1 includes a fixing groove 107, which is arranged at the lower end of one side of the interior of the valve wheel 7, and one side of the interior of the fixing groove 107 is movably connected with a mounting block 104 extending to the interior of the valve wheel 7, and one end of the mounting block 104 is fixedly connected with a pull rod 106 extending to the outside of the fixing groove 107, and a mounting spring 105 is wound around the surface of the pull rod 106 at one end of the mounting block 104, and one end of the mounting spring 105 is fixedly connected to the inner wall of the fixing groove 107, and a mounting hole 101 is arranged at the upper end of one side of the valve stem 6. The elastic force of the mounting spring 105 is utilized to realize the engagement or disengagement of the mounting block 104 with the interior of the mounting hole 101, thereby realizing the rapid disassembly and assembly between the valve wheel 7 and the valve stem 6, facilitating the rotation of the valve stem 6 after installation, or replacing the valve wheel 7 after it is damaged, and at the same time, after the valve wheel 7 is disassembled, it can prevent non-staff from rotating the valve stem 6.

[0034] In this embodiment, a snap-fit ​​structure is formed between one end of the mounting block 104 and the interior of the mounting hole 101. The length of the mounting block 104 is smaller than the depth of the interior of the fixing groove 107. The snap-fit ​​between one end of the mounting block 104 and the interior of the mounting hole 101 improves the firmness of the valve wheel 7 mounted on the top end of the valve stem 6.

[0035] In this embodiment, a limiting groove 102 is provided on the inner wall of the fixing groove 107, and a limiting block 103 which slides with the inside of the limiting groove 102 is fixedly connected to the top and bottom ends of one side of the mounting block 104. The limiting block 103 slides in the limiting groove 102 to improve the sliding stability of the mounting block 104.

[0036] Furthermore, a slot 9 is provided on one side of the top end of the valve stem 6, and a clip 8 is fixedly connected to one side of the inner wall of the valve wheel 7 and is slidably engaged with the inside of the slot 9. The sliding engagement between the clip 8 and the inside of the slot 9 improves the accuracy and stability of the valve wheel 7 being mounted on the top end of the valve stem 6.

[0037] In addition, sealing rings 4 are fixedly connected to both sides of the inner wall of the valve body 2. The cross-section of the sealing ring 4 is O-shaped. The O-shaped sealing ring 4 is used to improve the sealing performance of the connection between the two ends of the valve body 2 and the external pipeline.

[0038] The working principle and use process of the utility model are as follows: first, the flanges at both ends of the valve body 2 are connected and fixed with the external pipeline, and the O-shaped sealing ring 4 is used to improve the sealing performance of the connection between the two ends of the valve body 2 and the external pipeline. Then, the bottom mounting block 104 is pulled by pulling the pull rod 106 to slide and compress the mounting spring 105 until it is completely separated from the inside of the mounting hole 101, and then the valve wheel 7 is sleeved on the top of the valve stem 6, and the clamping strip 8 is clamped into the inside of the clamping groove 9, and then the pull rod 106 is loosened, and the elastic force of the mounting spring 105 is used to make the mounting block 104 clamped into the inside of the mounting hole 101, so as to realize the installation and fixation between the valve wheel 7 and the valve stem 6, so that the valve wheel 7 can rotate the valve stem 6 to make the valve plate 5 achieve the purpose of switching. When the valve wheel 7 needs to be disassembled, the above steps can be reversed, which is convenient for disassembling and replacing the valve wheel 7, and after it is disassembled, it can be prevented from being rotated by non-staff members.

[0039] At the same time, when the medium flows into the valve body 2, the buffer plate 301 will first contact it, and when the medium flows too fast suddenly, the buffer plate 301 will slide, so that the sliding block 302 slides in the reserved groove 303 to compress the shock-absorbing spring 304 and the damper 305. The shock-absorbing spring 304 absorbs the sliding impact energy of the buffer plate 301, and the damper 305 consumes the elastic potential energy of the shock-absorbing spring 304. The buffer plate 301, the shock-absorbing spring 304 and the damper 305 can absorb and consume the impact force generated by the sudden rapid flow of the medium, thereby achieving buffering and shock reduction of the valve plate 5, avoiding excessive friction and wear between the valve plate 5 and the valve body 2 caused by excessive impact force, thereby reducing its sealing performance and shortening the service life of the valve body 2 itself.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-sealing butterfly valve with shock-absorbing function, characterized in that: It comprises a valve body (2), wherein the upper end and the lower end of one side of the interior of the valve body (2) are provided with a shock absorbing assembly (3), the other side of the top end of the valve body (2) is rotatably connected to a valve stem (6) extending into the interior of the valve body (2), a valve plate (5) is fixedly connected to the interior of the valve body (2) on the surface of the valve stem (6), the top end of the valve stem (6) is movably connected to a valve wheel (7), and a mounting assembly (1) is provided at the lower end of one side of the valve wheel (7); The shock absorbing assembly (3) comprises a reserved groove (303), wherein the reserved groove (303) is provided at the upper end and the lower end of one side of the inner wall of the valve body (2), a damper (305) is fixedly connected to one side of the inner wall of the reserved groove (303), one end of the damper (305) is fixedly connected to a sliding block (302), a shock absorbing spring (304) is wound around the surface of the damper (305) on one side of the sliding block (302), one end of the shock absorbing spring (304) is fixedly connected to the inner wall of the reserved groove (303), and one end of the sliding block (302) is fixedly connected to a buffer plate (301) extending to the outside of the reserved groove (303).

2. A high-sealing butterfly valve with shock-absorbing function according to claim 1, characterized in that: The buffer plate (301) has an inclination angle of 25 degrees with respect to the vertical direction, and through grooves are provided on the buffer plate (301) at equal intervals.

3. A high-sealing butterfly valve with shock-absorbing function according to claim 1, characterized in that: A sliding structure is formed between the sliding block (302) and the interior of the reserved groove (303); the cross-sections of the sliding block (302) and the reserved groove (303) are convex.

4. A high-sealing butterfly valve with a shock-absorbing function according to claim 1, characterized in that: The mounting assembly (1) comprises a fixing groove (107), wherein the fixing groove (107) is provided at the lower end of one side inside the valve wheel (7), and one side inside the fixing groove (107) is movably connected to a mounting block (104) extending to the inside of the valve wheel (7), and one end of the mounting block (104) is fixedly connected to a pull rod (106) extending to the outside of the fixing groove (107), and a mounting spring (105) is wound around the surface of the pull rod (106) at one end of the mounting block (104), and one end of the mounting spring (105) is fixedly connected to the inner wall of the fixing groove (107), and a mounting hole (101) is provided at the upper end of one side of the valve stem (6).

5. A high-sealing butterfly valve with a shock-absorbing function according to claim 4, characterized in that: A snap-fit ​​structure is formed between one end of the mounting block (104) and the interior of the mounting hole (101); the length of the mounting block (104) is smaller than the depth of the interior of the fixing groove (107).

6. A high-sealing butterfly valve with a shock-absorbing function according to claim 4, characterized in that: The inner wall of the fixing groove (107) is provided with a limiting groove (102), and the top and bottom ends of one side of the mounting block (104) are fixedly connected with limiting blocks (103) that are slidably matched with the inside of the limiting groove (102).

7. A high-sealing butterfly valve with a shock-absorbing function according to claim 1, characterized in that: A clamping groove (9) is provided on one side of the top end of the valve stem (6), and a clamping strip (8) is fixedly connected to one side of the inner wall of the valve wheel (7) and is slidably engaged with the inside of the clamping groove (9).

8. The high-sealing butterfly valve with shock-absorbing function according to claim 1, characterized in that: Sealing rings (4) are fixedly connected to both sides of the inner wall of the valve body (2); the cross-section of the sealing ring (4) is in an O-shape.

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