A long-life, high-frequency pneumatic butterfly valve

Abstract

This utility model discloses a long-life, high-frequency pneumatic butterfly valve, comprising a valve plate body and a valve body. The valve body is disposed outside the valve plate body, and a support box is disposed outside the valve body. A hollow box is installed on the side wall of the support box, and an air inlet pipe is installed on the side wall of the hollow box. An indicator plate is installed at the top of the support box, and an indicator mark is movably installed inside the indicator plate, extending through the indicator plate and the support box. A rotating shaft is movably installed inside the support box, extending through the support box and to its exterior. This utility model not only achieves convenient pneumatic actuation for opening and closing the butterfly valve, reducing manual labor intensity, but also provides direct indication of whether it is open, improving the convenience of visual display, enhancing the practicality of the butterfly valve, facilitating easy replacement of the valve body, and simplifying disassembly, thus improving the convenience of valve body replacement.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically a long-life, high-frequency pneumatic butterfly valve. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is characterized by its closing element (valve disc or butterfly plate) being a disk that rotates around a valve shaft to open and close. Butterfly valves can control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. In pipelines, they primarily function as shut-off and throttling devices. The butterfly valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body to achieve opening, closing, or regulation.

[0003] For example, a pneumatic butterfly valve disclosed in the authorization announcement number CN217977414U includes a butterfly valve body, a pneumatic actuator is provided on the upper part of the butterfly valve body, the pneumatic actuator is connected to the valve stem, and two protective shells are respectively hinged to the outer surface of the butterfly valve body by two pins. Two semi-circular through holes are respectively opened on the two protective shells, and the surface of the valve stem contacts the two semi-circular through holes. Although it achieves the protection of the valve stem and pneumatic actuator by setting a protective shell to prevent the valve stem from being exposed to the outside for a long time and bending due to external force, thus preventing damage to the pneumatic actuator, the sealing contact between the No. 1 gasket, No. 2 gasket, valve seat and the inner wall of the butterfly valve body can effectively prevent water leakage from the butterfly valve body. However, this does not solve the problem that existing butterfly valves of this type are generally not convenient to open and close pneumatically, which affects the labor intensity of manual labor, is not convenient to directly indicate whether it is open or closed, which affects the convenience of visual display and the practicality of the butterfly valve, and is not convenient to replace the valve body or disassemble it by personnel, which affects the convenience of replacing the valve body. Utility Model Content

[0004] The purpose of this utility model is to provide a long-life, high-frequency pneumatic butterfly valve to solve the problems mentioned in the background art, such as the butterfly valve being inconvenient to pneumatically drive to open and close, affecting the labor intensity of manual labor, the butterfly valve being inconvenient to directly indicate whether it is open, affecting the convenience of visual display and the practicality of the butterfly valve, and the butterfly valve body being inconvenient to replace, making it difficult for personnel to disassemble, thus affecting the convenience of replacing the butterfly valve body.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a long-life, high-frequency pneumatic butterfly valve, comprising a valve plate body and a valve body. The valve body is disposed outside the valve plate body, and a support box is disposed outside the valve body. A hollow box is installed on the side wall of the support box, and an air inlet pipe is installed on the side wall of the hollow box. An indicator plate is installed at the top of the support box, and an indicator mark is movably installed inside the indicator plate. The indicator mark extends through the indicator plate and the support box into its interior. A rotating shaft is movably installed inside the support box, and the rotating shaft extends through the support box into its exterior. The indicator mark is fixedly connected to the rotating shaft. A sector gear is fitted on the surface of the rotating shaft inside the support box. A spring is installed on the side wall of the support box, and a rack is installed on the side wall of the spring.

[0006] Preferably, the sector gear meshes with the rack, and a piston is mounted on the side of the rack away from the spring.

[0007] Preferably, the piston is slidably connected to the hollow box, and a first sealing ring is installed on the outer wall of the valve plate body.

[0008] Preferably, a second sealing ring is installed on the inner wall of the valve body, and a first connecting block is installed on the side wall of the valve plate body.

[0009] Preferably, the first connecting block is provided with two sets of first bolts on its exterior, and the first bolts pass through the first connecting block and are threadedly connected to the rotating shaft.

[0010] Preferably, the first connecting block is movably connected to the rotating shaft, and a second connecting block is installed on the side wall of the valve plate body away from the first connecting block.

[0011] Preferably, the second connecting block has two sets of second bolts on its exterior and a support shaft is movably installed inside the second connecting block.

[0012] Preferably, the second bolt passes through the second connecting block and is threadedly connected to the support shaft, which extends through the valve body to its exterior.

[0013] Preferably, the support shaft is movably connected to the valve body, and the bottom end of the support shaft is equipped with multiple sets of equally spaced third bolts.

[0014] Preferably, each of the third bolts has a nut fitted on its surface, and each of the third bolts is threadedly connected to the nut.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the butterfly valve not only realizes convenient pneumatic drive to open and close, reducing manual labor intensity, but also facilitates direct indication of whether it is open, improves the convenience of visual display, enhances the practicality of the butterfly valve, facilitates easy replacement of the valve body, and makes it easier for personnel to disassemble and replace the valve body.

[0016] (1) When using a pneumatic butterfly valve, the air inlet pipe is connected to the air circuit. After the air inlet pipe is filled with air, the hollow box is filled with air, which pushes the piston to move. Under the elastic support of the spring, the piston drives the rack and spring to move. The rack drives the sector gear to rotate. The sector gear drives the rotating shaft and the indicator to rotate, so that the indicator rotates on the surface of the indicator plate to indicate. At the same time, the rotating shaft drives the first connecting block, the valve plate body, the second connecting block, and the support shaft to rotate, so that the valve plate body rotates to the appropriate position to open and allow flow. When the air circuit is closed, under the elastic support of the spring, the spring drives the rack and piston to reset, so that the rack drives the sector gear to rotate, so that the sector gear drives the rotating shaft, the indicator, the first connecting block, the valve plate body, the second connecting block, and the support shaft to reset, so that the first sealing ring and the second sealing ring come into contact to seal. This realizes the convenient pneumatic drive to open and close the butterfly valve, reduces the labor intensity of manual labor, facilitates the direct indication of whether it is open, improves the convenience of visual display, and improves the practicality of the butterfly valve.

[0017] (2) When it is necessary to remove and replace the valve body, turn the multiple sets of third bolts to separate the third bolts from the valve body, turn the two sets of first bolts to separate the first bolts from the rotating shaft, turn the two sets of second bolts, and under the threaded connection between the second bolts and the support shaft, separate the second bolts from the support shaft, thereby removing the support shaft. After the support shaft is removed, the valve body can be removed, thereby replacing the valve body. This realizes the convenient replacement of the valve body of the butterfly valve, which facilitates the disassembly by personnel and improves the convenience of replacing the valve body of the butterfly valve. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view structural diagram of the present utility model; Figure 3 This is a three-dimensional structural diagram of the sector gear of this utility model; Figure 4 This is a front view cross-sectional structural diagram of the hollow box of this utility model; Figure 5 This is a three-dimensional structural diagram of the valve plate body of this utility model; Figure 6 This is a three-dimensional structural diagram of the support shaft of this utility model.

[0019] In the diagram: 1. Valve plate body; 2. Valve body; 3. Support box; 4. Hollow box; 5. Intake pipe; 6. Indicator plate; 7. Indicator mark; 8. Rotating shaft; 9. Sector gear; 10. Spring; 11. Rack; 12. Piston; 13. First sealing ring; 14. Second sealing ring; 15. First connecting block; 16. First bolt; 17. Support shaft; 18. Second connecting block; 19. Second bolt; 20. Third bolt; 21. Nut. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Example 1 Please see Figure 1-6This utility model provides an embodiment of a long-life, high-frequency pneumatic butterfly valve, comprising a valve plate body 1 and a valve body 2. The valve body 2 is disposed outside the valve plate body 1, and a support box 3 is disposed outside the valve body 2. A hollow box 4 is installed on the side wall of the support box 3, and an air inlet pipe 5 is installed on the side wall of the hollow box 4. An indicator plate 6 is installed at the top of the support box 3, and an indicator mark 7 is movably installed inside the indicator plate 6. The indicator mark 7 extends through the indicator plate 6 and the support box 3 into its interior. The device is equipped with a rotating shaft 8, which extends through the support box 3 to its exterior. The indicator 7 is fixedly connected to the rotating shaft 8. Inside the support box 3, a sector gear 9 is fitted on the surface of the rotating shaft 8. A spring 10 is installed on the side wall of the support box 3, and a rack 11 is installed on the side wall of the spring 10. The sector gear 9 meshes with the rack 11. A piston 12 is installed on the side of the rack 11 away from the spring 10. The piston 12 is slidably connected to the hollow box 4. A first sealing ring 13 is installed on the outer wall of the valve plate body 1. When using the pneumatic butterfly valve, the air intake pipe 5 is connected to the air circuit. After air enters through the air intake pipe 5, it fills the hollow box 4 with air, causing the gas to push the piston 12 to move. Under the elastic support of the spring 10, the piston 12 drives the rack 11 and the spring 10 to move. When the rack 11 moves, under the meshing of the rack 11 and the sector gear 9, the rack 11 drives the sector gear 9 to rotate. The sector gear 9 drives the rotating shaft 8 and the indicator 7 to rotate, causing the indicator 7 to rotate on the surface of the indicator disc 6 to indicate. Under the support of the support shaft 17, the rotating shaft 8 simultaneously drives the first connecting block 15, the valve plate body 1, the second connecting block 18, and the support shaft 17 to rotate, causing the valve plate body 1 to rotate appropriately. The valve rotates to open and allow airflow. When the air path is closed, the spring 10, under its elastic support, drives the rack 11 and piston 12 to reset. The rack 11 meshes with the sector gear 9, causing the rack 11 to drive the sector gear 9 to rotate. This causes the sector gear 9 to drive the rotating shaft 8, indicator 7, first connecting block 15, valve plate body 1, second connecting block 18, and support shaft 17 to reset, allowing the first sealing ring 13 and the second sealing ring 14 to come into contact and seal. This achieves convenient pneumatic drive opening and closing of the butterfly valve, reducing manual labor intensity, facilitating direct indication of whether it is open, improving the convenience of visual display, and enhancing the practicality of the butterfly valve. A second sealing ring 14 is installed on the inner wall of the valve body 2, and a first connecting block 15 is installed on the side wall of the valve plate body 1. Two sets of first bolts 16 are provided on the outside of the first connecting block 15. The first bolts 16 pass through the first connecting block 15 and are threadedly connected to the rotating shaft 8. The first connecting block 15 is movably connected to the rotating shaft 8. A second connecting block 18 is installed on the side wall of the valve plate body 1 away from the first connecting block 15. The second connecting block 18 has two sets of second bolts 19 on its exterior and a support shaft 17 is movably installed inside the second connecting block 18. The second bolt 19 passes through the second connecting block 18 and is threadedly connected to the support shaft 17, which extends through the valve body 2 to its outside. The support shaft 17 is movably connected to the valve body 2. Multiple sets of third bolts 20 with equal spacing are installed at the bottom end of the support shaft 17. Nuts 21 are fitted on the surface of each third bolt 20, and each third bolt 20 is threadedly connected to the nut 21. When the valve body 1 needs to be removed and replaced, multiple sets of third bolts 20 are turned. Under the threaded connection between the third bolts 20 and the valve body 2, the third bolts 20 are disengaged from the valve body 2. Two sets of first bolts 16 are turned. Under the threaded connection between the first bolts 16 and the rotating shaft 8, the first bolts 16 are disengaged from the rotating shaft 8. Two sets of second bolts 19 are turned. Under the threaded connection between the second bolts 19 and the support shaft 17, the second bolts 19 are disengaged from the support shaft 17, thereby removing the support shaft 17. After the support shaft 17 is removed, the valve body 1 can be removed, thereby replacing the valve body 1. This realizes convenient replacement of the valve body of the butterfly valve, facilitates disassembly by personnel, and improves the convenience of replacing the valve body of the butterfly valve.

[0024] Work steps Working principle: When using the pneumatic butterfly valve, the air inlet pipe 5 is connected to the air circuit. After air enters through the air inlet pipe 5, it fills the hollow box 4 with air, causing the gas to push the piston 12 to move. Under the elastic support of the spring 10, the piston 12 drives the rack 11 and the spring 10 to move. The rack 11 drives the sector gear 9 to rotate, and the sector gear 9 drives the rotating shaft 8 and the indicator 7 to rotate, causing the indicator 7 to rotate on the surface of the indicator disc 6 to indicate. At the same time, the rotating shaft 8 drives the first connecting block 15, the valve plate body 1, the second connecting block 18, and the support shaft 17 to rotate, causing the valve plate body 1 to rotate to the appropriate position to open and allow flow. When the air circuit is closed, under the elastic support of the spring 10, the spring 10 drives the rack 11 and the piston 12 to reset, causing the rack 11 to drive the piston 12 to rotate back to its original position. The sector gear 9 rotates, thereby driving the rotating shaft 8, indicator 7, first connecting block 15, valve plate body 1, second connecting block 18, and support shaft 17 to reset, so that the first sealing ring 13 and the second sealing ring 14 come into contact and seal. When the valve plate body 1 needs to be removed and replaced, multiple sets of third bolts 20 are turned to disengage the third bolts 20 from the valve body 2. Two sets of first bolts 16 are turned to disengage the first bolts 16 from the rotating shaft 8. Two sets of second bolts 19 are turned, and under the threaded connection between the second bolts 19 and the support shaft 17, the second bolts 19 are disengaged from the support shaft 17, thereby removing the support shaft 17. After the support shaft 17 is removed, the valve plate body 1 is removed, thereby replacing the valve plate body 1 and completing the use of the butterfly valve.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A long-life high-frequency pneumatic butterfly valve, characterized by: The device includes a valve plate body (1) and a valve body (2). The valve body (2) is provided on the outside of the valve plate body (1). A support box (3) is provided on the outside of the valve body (2). A hollow box (4) is installed on the side wall of the support box (3). An air intake pipe (5) is installed on the side wall of the hollow box (4). An indicator plate (6) is installed at the top of the support box (3). An indicator mark (7) is movably installed inside the indicator plate (6). The indicator mark (7) extends through the indicator plate (6) and the support box (3) into its interior. A rotating shaft (8) is movably installed inside the support box (3). The rotating shaft (8) extends through the support box (3) into its exterior. The indicator mark (7) is fixedly connected to the rotating shaft (8). A sector gear (9) is fitted on the surface of the rotating shaft (8) inside the support box (3). A spring (10) is installed on the side wall of the support box (3). A rack (11) is installed on the side wall of the spring (10).

2. The long-life, high-frequency pneumatic butterfly valve according to claim 1, characterized in that: The sector gear (9) meshes with the rack (11), and a piston (12) is installed on the side of the rack (11) away from the spring (10).

3. The long-life, high-frequency pneumatic butterfly valve according to claim 2, characterized in that: The piston (12) is slidably connected to the hollow box (4), and a first sealing ring (13) is installed on the outer wall of the valve plate body (1).

4. The long-life, high-frequency pneumatic butterfly valve according to claim 1, characterized in that: A second sealing ring (14) is installed on the inner wall of the valve body (2), and a first connecting block (15) is installed on the side wall of the valve plate body (1).

5. A long-life, high-frequency pneumatic butterfly valve according to claim 4, characterized in that: The first connecting block (15) is provided with two sets of first bolts (16) on its exterior. The first bolts (16) pass through the first connecting block (15) and are threadedly connected to the rotating shaft (8).

6. The long-life, high-frequency pneumatic butterfly valve according to claim 5, characterized in that: The first connecting block (15) is movably connected to the rotating shaft (8), and a second connecting block (18) is installed on the side wall of the valve plate body (1) away from the first connecting block (15).

7. A long-life, high-frequency pneumatic butterfly valve according to claim 6, characterized in that: The second connecting block (18) is provided with two sets of second bolts (19) on its exterior, and a support shaft (17) is movably installed inside the second connecting block (18).

8. A long-life, high-frequency pneumatic butterfly valve according to claim 7, characterized in that: The second bolt (19) passes through the second connecting block (18) and is threaded to the support shaft (17), which extends through the valve body (2) to its outside.

9. A long-life, high-frequency pneumatic butterfly valve according to claim 8, characterized in that: The support shaft (17) is movably connected to the valve body (2), and the bottom end of the support shaft (17) is equipped with multiple sets of third bolts (20) at equal intervals.

10. A long-life, high-frequency pneumatic butterfly valve according to claim 9, characterized in that: The surface of each of the third bolts (20) is fitted with a nut (21), and each of the third bolts (20) is threadedly connected to the nut (21).

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