Damping butterfly valve suitable for large machinery

Abstract

The utility model relates to the technical field of butterfly valve production and processing, and discloses a damping butterfly valve suitable for large machinery, which comprises a butterfly valve body, the inner wall of the butterfly valve body is rotatably connected with a butterfly plate, the inner wall of the butterfly valve body is slidably connected with a sliding plate, and the outer wall of the sliding plate is provided with a first spring. The outer wall of the first spring is arranged on the inner wall of the butterfly valve body, a buffering assembly is arranged on the outer wall of the sliding plate, a sliding column is fixedly connected to the outer wall of the buffering assembly, and a damping shell is slidably connected to the outer wall of the sliding column. According to the butterfly valve, the buffer plate can drive the sliding column to slide on the inner wall of the damping shell while moving, the second spring is compressed while sliding, and through mutual cooperation of the hole, the sliding column, the first spring and the second spring, the impact force of water flow acting on the surface of the butterfly plate is reduced; the butterfly plate is prevented from being broken due to long-time impact of water flow, and the effect of prolonging the service life of the butterfly plate is achieved.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve manufacturing and processing technology, and in particular to a shock-absorbing butterfly valve suitable for large machinery. Background Technology

[0002] A butterfly valve is a type of valve that controls the flow of fluid or regulates its flow rate by rotating a valve plate. It typically consists of a valve body, a butterfly plate, a valve stem, and an operating mechanism. It is used in various industrial and civil applications, such as in water supply and drainage systems to control the flow rate and direction of water, and in the petrochemical industry to transport and control various chemical media.

[0003] Existing butterfly valves typically employ a centerline structure, with the valve plate and valve stem aligned on the same centerline. However, they lack a buffer function, which means that when closing rapidly, the water flow will quickly impact the butterfly plate, causing damage and reducing its lifespan. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a shock-absorbing butterfly valve suitable for large machinery, aiming to improve the problem that existing butterfly valves do not have a buffer function, which leads to a reduction in the service life of the butterfly plate.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A shock-absorbing butterfly valve suitable for large machinery includes a butterfly valve body, a butterfly plate rotatably connected to the inner wall of the butterfly valve body, a sliding plate slidably connected to the inner wall of the butterfly valve body, a first spring provided on the outer wall of the sliding plate, the outer wall of the first spring being disposed on the inner wall of the butterfly valve body, a buffer assembly provided on the outer wall of the sliding plate, a sliding column fixedly connected to the outer wall of the buffer assembly, a damping shell slidably connected to the outer wall of the sliding column, a second spring provided on the outer wall of the sliding column, the second spring being disposed inside the damping shell, and a support plate fixedly connected to the outer wall of the sliding column, the outer wall of the support plate being fixedly connected to the outer wall of the butterfly valve body.

[0007] Preferably, the buffer assembly includes a buffer plate, the outer wall of which is fixedly connected to the outer wall of the sliding plate, and the inner wall of the buffer plate has holes.

[0008] Preferably, the inner wall of the butterfly valve body is provided with a sliding groove, and the sliding plate is slidably connected to the inner wall of the butterfly valve body through the sliding groove.

[0009] Preferably, a transmission column is fixedly connected to the inner wall of the butterfly plate, and the outer wall of the transmission column is rotatably connected to the inner wall of the butterfly valve body. A rotating assembly is provided on the inner wall of the transmission column, and a threaded rod is threadedly connected to the inner wall of the rotating assembly. The outer wall of the threaded rod is threadedly connected to the inner wall of the transmission column, and a threaded cap is provided on the outer wall of the threaded rod. The outer wall of the threaded cap is fitted against the outer wall of the transmission column.

[0010] Preferably, the rotating assembly includes a cross plate, the outer wall of which is slidably connected to the inner wall of the transmission column, and the inner wall of the cross plate is provided with a threaded hole.

[0011] Preferably, the inner wall of the transmission column is provided with a threaded hole, and the threaded rod is threadedly connected to the cross plate and the inner wall of the transmission column through the threaded hole.

[0012] Preferably, the buffer plate is made of high manganese steel.

[0013] Preferably, the butterfly plate is made of a cobalt-based alloy.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, when water flows through the butterfly valve body, the impact force of the water flow itself will first drive the buffer plate to move, and cooperate with the butterfly valve body to compress the first spring. At the same time as the buffer plate moves, it will also drive the sliding column to slide on the inner wall of the damping shell, and compress the second spring while sliding. Through the cooperation between the hole, the sliding column, the first spring and the second spring, the impact force of the water flow on the surface of the butterfly plate is reduced, and the butterfly plate is prevented from breaking due to long-term impact of the water flow, thus extending the service life of the butterfly plate.

[0016] 2. In this utility model, the threaded cap is removed from the outer wall of the threaded rod by rotating the threaded cap, and the threaded rod is further rotated to remove it from the inner wall of the cross plate and the transmission column. At this time, an upward force is applied to the cross plate, thereby removing the cross plate from the inner wall of the transmission column, which reduces the time cost required for subsequent maintenance and replacement of the cross plate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the shock-absorbing butterfly valve suitable for large machinery proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of the buffer plate of the shock-absorbing butterfly valve for large machinery proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the second spring of the shock-absorbing butterfly valve suitable for large machinery proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of the first spring of the shock-absorbing butterfly valve suitable for large machinery proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of a partial hole structure of the shock-absorbing butterfly valve suitable for large machinery proposed in this utility model;

[0022] Figure 6 This is a partial structural diagram of the threaded hole of the shock-absorbing butterfly valve for large machinery proposed in this utility model.

[0023] Legend:

[0024] 1. Butterfly valve body; 2. Butterfly plate; 3. Sliding plate; 4. Buffer plate; 5. Hole; 6. First spring; 7. Support plate; 8. Sliding column; 9. Damping housing; 10. Second spring; 11. Slide groove; 12. Transmission column; 13. Cross plate; 14. Threaded rod; 15. Threaded cap; 16. Threaded hole. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Reference Figures 1-3 An embodiment of this utility model provides a shock-absorbing butterfly valve suitable for large machinery, comprising a butterfly valve body 1, a butterfly plate 2 rotatably connected to the inner wall of the butterfly valve body 1, a sliding plate 3 slidably connected to the inner wall of the butterfly valve body 1, a first spring 6 provided on the outer wall of the sliding plate 3, the outer wall of the first spring 6 being disposed on the inner wall of the butterfly valve body 1, a buffer assembly provided on the outer wall of the sliding plate 3, a sliding column 8 fixedly connected to the outer wall of the buffer assembly, a damping shell 9 slidably connected to the outer wall of the sliding column 8, a second spring 10 provided on the outer wall of the sliding column 8, the second spring 10 being disposed inside the damping shell 9, and a support plate 7 fixedly connected to the outer wall of the sliding column 8, the outer wall of the support plate 7 being fixedly connected to the outer wall of the butterfly valve body 1;

[0027] Specifically, when subjected to a strong water flow impact, the buffer component will move first. When the buffer component moves, the sliding plate 3 will move due to the fixing action of the buffer component and the sliding plate 3. When the sliding plate 3 moves, it will cooperate with the butterfly valve body 1 to compress the first spring 6, thereby achieving initial buffering of the water flow. At the same time, the movement of the buffer component will also drive the sliding column 8 to slide. When the sliding column 8 slides, it will compress the second spring 10. Through the sliding of the sliding plate 3 and the sliding column 8, the impact force of the water flow is reduced, and the excessive impact force is avoided from damaging the butterfly plate 2.

[0028] Reference Figure 1 , Figure 2 and Figure 4 The buffer assembly includes a buffer plate 4, the outer wall of which is fixedly connected to the outer wall of the sliding plate 3, and the inner wall of the buffer plate 4 is provided with holes 5; the inner wall of the butterfly valve body 1 is provided with a sliding groove 11, and the sliding plate 3 is slidably connected to the inner wall of the butterfly valve body 1 through the sliding groove 11.

[0029] Specifically, the holes 5 are used to disperse the water flow and reduce the impact force of the water flow on the buffer plate 4, and the grooves 11 are used to limit the running trajectory of the sliding plate 3.

[0030] Reference Figure 1 , Figure 5 and Figure 6 A transmission column 12 is fixedly connected to the inner wall of the butterfly plate 2. The outer wall of the transmission column 12 is rotatably connected to the inner wall of the butterfly valve body 1. A rotating assembly is provided on the inner wall of the transmission column 12. A threaded rod 14 is threadedly connected to the inner wall of the rotating assembly. The outer wall of the threaded rod 14 is threadedly connected to the inner wall of the transmission column 12. A threaded cap 15 is provided on the outer wall of the threaded rod 14. The outer wall of the threaded cap 15 fits against the outer wall of the transmission column 12. The rotating assembly includes a cross plate 13. The outer wall of the cross plate 13 is slidably connected to the inner wall of the transmission column 12. A threaded hole 16 is opened on the inner wall of the cross plate 13. A threaded rod 14 is threadedly connected to the inner wall of the cross plate 13 and the inner wall of the transmission column 12 through the threaded hole 16.

[0031] Specifically, rotating the cross plate 13 will cause the threaded rod 14 to rotate, which in turn will drive the transmission column 12 to rotate. When the transmission column 12 rotates, it will drive the butterfly plate 2 to rotate through the fixing action of the butterfly plate 2, thereby opening or closing the butterfly plate 2. When it is necessary to disassemble and replace the cross plate 13, first rotate the threaded cap 15 off the outer wall of the threaded rod 14, then remove the threaded rod 14 to release the limiting state between the cross plate 13 and the transmission column 12. After removing the threaded rod 14, pull the cross plate 13 upward to achieve quick disassembly of the cross plate 13, which facilitates quick replacement and maintenance of the cross plate 13 in the future.

[0032] Reference Figure 1The buffer plate 4 is made of high manganese steel; the butterfly plate 2 is made of cobalt-based alloy.

[0033] Specifically, the high manganese steel has excellent strength, which can improve the overall strength of the buffer plate 4 and ensure that the buffer plate 4 will not deform after long-term water flow impact. The cobalt-based alloy has excellent corrosion resistance, which can improve the overall corrosion resistance of the butterfly plate 2.

[0034] Working principle: When water flows through the butterfly valve body 1, it first drives the buffer plate 4 to move. When the buffer plate 4 moves, it drives the sliding plate 3 to slide on the inner wall of the butterfly valve body 1 through the sliding groove 11, and compresses the first spring 6. At the same time, the sliding plate 3 also drives the sliding column 8 to slide on the inner wall of the damping housing 9, and compresses the second spring 10 while sliding. The hole 5 is used to disperse the water flow and prevent the impact force of the water flow from acting entirely on the buffer plate 4. Through the sliding of the hole 5, the sliding plate 3 and the sliding column 8, the impact force of the water flow is buffered to a certain extent, and the butterfly plate 2 is prevented from being damaged due to excessive impact force.

[0035] First, rotate and remove the threaded cap 15. Then, remove the threaded rod 14 from the inner wall of the transmission column 12 and the cross plate 13. After removing the threaded rod 14, hold and pull the cross plate 13 upward to quickly disassemble and replace the cross plate 13. This avoids the entire butterfly valve body 1 being scrapped due to a failure of the cross plate 13, thus improving the reliability of the butterfly valve.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 shock-absorbing butterfly valve suitable for large machinery, comprising a butterfly valve body (1), characterized in that: The inner wall of the butterfly valve body (1) is rotatably connected to a butterfly plate (2), and the inner wall of the butterfly valve body (1) is slidably connected to a sliding plate (3). The outer wall of the sliding plate (3) is provided with a first spring (6), and the outer wall of the first spring (6) is provided on the inner wall of the butterfly valve body (1). The outer wall of the sliding plate (3) is provided with a buffer assembly, and the outer wall of the buffer assembly is fixedly connected to a sliding column (8). The outer wall of the sliding column (8) is slidably connected to a damping shell (9). The outer wall of the sliding column (8) is provided with a second spring (10), and the second spring (10) is provided inside the damping shell (9). The outer wall of the sliding column (8) is fixedly connected to a support plate (7), and the outer wall of the support plate (7) is fixedly connected to the outer wall of the butterfly valve body (1).

2. The shock-absorbing butterfly valve for large machinery according to claim 1, characterized in that: The buffer assembly includes a buffer plate (4), the outer wall of which is fixedly connected to the outer wall of the sliding plate (3), and the inner wall of the buffer plate (4) is provided with holes (5).

3. The shock-absorbing butterfly valve for large machinery according to claim 1, characterized in that: The inner wall of the butterfly valve body (1) is provided with a sliding groove (11), and the sliding plate (3) is slidably connected to the inner wall of the butterfly valve body (1) through the sliding groove (11).

4. The shock-absorbing butterfly valve for large machinery according to claim 1, characterized in that: The inner wall of the butterfly plate (2) is fixedly connected to a transmission column (12), the outer wall of the transmission column (12) is rotatably connected to the inner wall of the butterfly valve body (1), the inner wall of the transmission column (12) is provided with a rotating assembly, the inner wall of the rotating assembly is threadedly connected to a threaded rod (14), the outer wall of the threaded rod (14) is threadedly connected to the inner wall of the transmission column (12), the outer wall of the threaded rod (14) is provided with a threaded cap (15), and the outer wall of the threaded cap (15) is attached to the outer wall of the transmission column (12).

5. The shock-absorbing butterfly valve for large machinery according to claim 4, characterized in that: The rotating assembly includes a cross plate (13), the outer wall of which is slidably connected to the inner wall of the transmission column (12), and the inner wall of the cross plate (13) is provided with a threaded hole (16).

6. The shock-absorbing butterfly valve for large machinery according to claim 5, characterized in that: The inner wall of the transmission column (12) is provided with a threaded hole (16), and the threaded rod (14) is threadedly connected to the inner wall of the cross plate (13) and the transmission column (12) through the threaded hole (16).

7. The shock-absorbing butterfly valve for large machinery according to claim 2, characterized in that: The buffer plate (4) is made of high manganese steel.

8. The shock-absorbing butterfly valve for large machinery according to claim 1, characterized in that: The butterfly plate (2) is made of a cobalt-based alloy.

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