Alloy paired-wing butterfly valve

Abstract

The utility model discloses an alloy paired-wing butterfly valve, belongs to the technical field of butterfly valves, and solves the problems that when the butterfly valve is closed, an obvious water hammer phenomenon can occur, so that the whole butterfly valve vibrates, and a hard sealing part in the butterfly valve is damaged due to collision. Comprising a valve body, two sections of valve rods rotationally connected into the valve body and a valve plate fixedly connected between the two sections of valve rods, a buffer space exists on one side of the valve plate, an opening of the buffer space is shielded by an elastic blocking piece, and the buffer space is filled with damping liquid. When the valve body is sealed by the valve plate, backflow liquid impacts the elastic blocking piece, so that the elastic blocking piece abuts against the partition plate and elastically deforms, and damping liquid in the cavity is stimulated to flow. The damping liquid slowly flows through the side through holes of the side elastic pieces, damping of the elastic blocking pieces is achieved, meanwhile, the damping liquid is further damped through the vertical through holes of the horizontal elastic pieces, liquid backflow impact is effectively relieved, and the water hammer effect is relieved.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, and in particular to an alloy double-wing butterfly valve. Background Technology

[0002] A butterfly valve is a rotary valve that holds a place in fluid control systems due to its unique design and operational efficiency. The main components of a butterfly valve include the valve body, disc, shaft, seals, and actuator. The valve body is the main structural element of the valve and is typically made of robust and durable materials such as cast iron, carbon steel, or alloy steel to accommodate different media and pressure ratings. The disc is the key component of the valve; it controls fluid flow through rotational movement. The material and design of the disc can be customized to meet specific application requirements.

[0003] The working principle of a butterfly valve is based on the rotation of a butterfly plate to regulate the flow rate of fluid. The rotation angle of the butterfly plate is proportional to the fluid flow rate, thus achieving precise flow control. When the butterfly plate is fully closed, it is in close contact with the valve seat, forming a seal and preventing fluid from passing through; while when the butterfly plate is fully open, it is almost parallel to the pipeline axis, providing minimal fluid resistance.

[0004] When the butterfly plate, or valve plate, closes the valve body, the fluid directly impacts the valve plate. Currently, there is no clear way to mitigate this phenomenon in butterfly valves. As a result, a noticeable water hammer phenomenon occurs when the butterfly valve is closed, causing the entire butterfly valve to vibrate and damaging its internal hard seals.

[0005] Therefore, an alloy-coated butterfly valve is proposed to solve or alleviate the above problems. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an alloy-coated butterfly valve.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An alloy butterfly valve includes a valve body, two valve stems rotatably connected to the valve body, and a valve plate fixedly connected between the two valve stems. A buffer space exists on one side of the valve plate, the opening of the buffer space is blocked by an elastic baffle, and the buffer space is filled with damping fluid.

[0009] Preferably, the valve stem is fixedly connected to a valve tube, the top surface of the valve plate has a channel through which the valve tube passes and communicates with the buffer space, a connecting ring is fixedly connected to the end face of the valve plate, and the elastic blocking piece is fixedly connected to the inner ring of the connecting ring.

[0010] Preferably, the connecting ring is fixedly connected to the valve plate by connecting bolts.

[0011] Preferably, a plurality of partitions located within the buffer space are fixedly connected to the valve plate, and the partitions are used to abut against the elastic blocking sheet.

[0012] Preferably, cavities are formed between adjacent partitions and between the partitions and the top and bottom surfaces of the buffer space. Damping elements are provided in both the cavities and the valve pipe, and the damping elements have elastic deformation properties.

[0013] Preferably, the damping element located inside the valve tube is a horizontal elastic sheet with a vertical through hole in the thickness direction, and the damping element located inside the cavity is a side elastic sheet with a side through hole in the thickness direction.

[0014] Preferably, the valve also includes a rotating seat fixedly connected to and communicating with the valve body, and a geared motor fixedly connected to the rotating seat. One end of the valve stem passes through the valve body and is closed by an end cover, and the other end of the valve stem is rotatably connected to the rotating seat. The output shaft of the geared motor is drively connected to the valve stem.

[0015] This utility model has the following beneficial effects:

[0016] When the valve plate seals the valve body, the backflowing liquid impacts the elastic baffle, causing it to contact the baffle and undergo elastic deformation. This agitates the damping fluid within the cavity, which then flows slowly through the side holes on the side elastic plate. This damping fluid further dampens the elastic baffle by passing through the vertical holes of the horizontal elastic plate, thus mitigating the impact of backflow and reducing the effects of water hammer. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] 1. Valve body; 2. End cover; 3. Rotating seat; 4. Gear motor; 5. Valve plate; 6. Valve stem; 7. Valve pipe; 8. Horizontal elastic plate; 9. Vertical through hole; 10. Partition plate; 11. Cavity; 12. Side elastic plate; 13. Side through hole; 14. Connecting ring; 15. Elastic blocking plate; 16. Connecting bolt; 17. Pressure ring; 18. Fixing bolt; 19. Sealing ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] An alloy finned butterfly valve, such as Figure 1 As shown, the valve includes a valve body 1, two valve stems 6 rotatably connected inside the valve body 1, a valve plate 5 fixedly connected between the two valve stems 6, a rotating seat 3 fixedly connected to the valve body 1 and communicating with its interior, and a geared motor 4 fixedly connected to the rotating seat 3. One end of the valve stem 6 passes through the valve body 1 and is closed by an end cover 2, and the other end of the valve stem 6 is rotatably connected inside the rotating seat 3. The output shaft of the geared motor 4 is drively connected to the valve stem 6.

[0023] like Figure 2 and 3 As shown, a buffer space exists on one side of the valve plate 5. The opening of the buffer space is blocked by an elastic baffle 15, and the buffer space is filled with damping fluid. A valve tube 7 is fixedly connected to the valve stem 6. A channel for the valve tube 7 to pass through and communicate with the buffer space is opened on the top surface of the valve plate 5. A connecting ring 14 is fixedly connected to the end face of the valve plate 5. The elastic baffle 15 is fixedly connected to the inner ring of the connecting ring 14. The connecting ring 14 is fixedly connected to the valve plate 5 by connecting bolts 16. A device located in the buffer space is fixedly connected to the valve plate 5. Several partitions 10 are provided, and the partitions 10 are used to abut against the elastic blocking sheet 15. A cavity 11 is formed between adjacent partitions 10 and between the partitions 10 and the top and bottom surfaces of the buffer space. Damping elements are provided in both the cavity 11 and the valve tube 7. The damping elements have elastic deformation properties. The damping element located in the valve tube 7 is a horizontal elastic sheet 8. A vertical through hole 9 is opened in the thickness direction of the horizontal elastic sheet 8. The damping element located in the cavity 11 is a side elastic sheet 12. A side through hole 13 is opened in the thickness direction of the side elastic sheet 12.

[0024] The elastic blocking sheet 15, the horizontal elastic sheet 8, and the side elastic sheet 12 are all made of silicone rubber.

[0025] When the valve plate 5 seals the valve body 1, the backflowing liquid impacts the elastic baffle 15, causing it to contact the partition 10 and undergo elastic deformation. This elastic deformation further agitates the damping fluid within the cavity 11, creating a dynamic flow. The damping fluid then slowly flows through the side through-hole 13 on the side elastic plate 12. This flow not only helps regulate the internal pressure but also effectively dampens the elastic baffle 15. Subsequently, the damping fluid also passes through the vertical through-hole 9 of the horizontal elastic plate 8, achieving a deeper damping effect. This continuous damping effectively mitigates the impact of the liquid during backflow, thereby reducing the effects of water hammer and improving the stability and safety of the entire system.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An alloy finned butterfly valve, characterized in that, It includes a valve body (1), two valve stems (6) rotatably connected in the valve body (1), and a valve plate (5) fixedly connected between the two valve stems (6). There is a buffer space on one side of the valve plate (5), the opening of the buffer space is blocked by an elastic blocking plate (15), and the buffer space is filled with damping fluid.

2. The alloy finned butterfly valve according to claim 1, characterized in that, The valve stem (6) is fixedly connected to the valve tube (7), and the top surface of the valve plate (5) is provided with a channel through which the valve tube (7) passes and communicates with the buffer space. A connecting ring (14) is fixedly connected to the end face of the valve plate (5), and the elastic blocking piece (15) is fixedly connected to the inner ring of the connecting ring (14).

3. The alloy finned butterfly valve according to claim 2, characterized in that, The connecting ring (14) is fixedly connected to the valve plate (5) by connecting bolts (16).

4. The alloy finned butterfly valve according to claim 2, characterized in that, The valve plate (5) is fixedly connected to a plurality of partitions (10) located in the buffer space, and the partitions (10) are used to abut against the elastic blocking sheet (15).

5. The alloy finned butterfly valve according to claim 4, characterized in that, A cavity (11) is formed between adjacent partitions (10) and between the partitions (10) and the top and bottom surfaces of the buffer space. A damping element is provided in both the cavity (11) and the valve pipe (7). The damping element has elastic deformation properties.

6. The alloy finned butterfly valve according to claim 5, characterized in that, The damping element located in the valve tube (7) is a horizontal elastic sheet (8), and the horizontal elastic sheet (8) has a vertical through hole (9) in the thickness direction. The damping element located in the cavity (11) is a side elastic sheet (12), and the side elastic sheet (12) has a side through hole (13) in the thickness direction.

7. The alloy finned butterfly valve according to claim 1, characterized in that, It also includes a rotating seat (3) fixedly connected to the valve body (1) and communicating with its interior, and a geared motor (4) fixedly connected to the rotating seat (3). One end of the valve stem (6) passes through the valve body (1) and is closed by the end cover (2), and the other end of the valve stem (6) is rotatably connected to the rotating seat (3), and the output shaft of the geared motor (4) is connected to the valve stem (6) in a transmission connection.

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