High-strength corrosion-resistant valve casting

Abstract

The utility model provides a valve casting with high strength and corrosion resistance, and relates to the technical field of valve castings, the valve casting comprises a shell, an opening and closing piece is arranged in the shell, a buffer structure is arranged in a pipe body, the buffer structure comprises a round pipe, one end of the round pipe is fixedly connected with a conical ring, and the other end of the round pipe is fixedly connected with a flange. A circular ring is fixedly connected to the end, away from the conical ring, of the circular pipe, a plurality of cylinders are fixedly connected to the outer surface of the circular pipe, and springs are arranged on one sides of the cylinders. Impact force borne by the round pipe is buffered through resilience force of the spring, the water flow speed is slowed down through the conical ring and the round pipe, the impact force of fluid is reduced as much as possible, and the situation that the service life of the valve is shortened due to the fact that the large impact force of the fluid flowing in the pipe body causes damage to the opening and closing piece and long-term corrosion is avoided as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of valve castings, in particular to a high-strength and corrosion-resistant valve casting. Background Art

[0002] Valve castings are key components produced by casting processes in valve manufacturing. By pouring molten metal or alloy into a mold and waiting for it to cool and solidify, they form specific shapes and sizes and are widely used in various industrial fields, such as petroleum, chemical industry, electric power, metallurgy, water treatment, etc.

[0003] When using valve castings, the large flow rate and fast fluid inside the valve will generate a large impact on the opening and closing parts inside the valve, causing damage to the surface of the opening and closing parts, resulting in impurities in the fluid adhering to the damaged parts on the surface of the opening and closing parts, thereby slowly corroding the inside of the valve casting and leading to the problem of low service life of the valve casting. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that the large flow rate and fast fluid inside the valve will generate a large impact on the opening and closing parts inside the valve, causing damage to the surface of the opening and closing parts, resulting in impurities in the fluid adhering to the damaged parts on the surface of the opening and closing parts, thereby slowly corroding the inside of the valve casting and leading to the problem of low service life of the valve casting, and a high-strength and corrosion-resistant valve casting is proposed.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A high-strength and corrosion-resistant valve casting, including a housing, an opening and closing part is arranged inside the housing, the opening and closing part is composed of a control rod and a closing plate, a pipe body is fixedly connected to one side of the housing, a buffer structure is arranged inside the pipe body, the buffer structure includes a circular pipe, one end of the circular pipe is fixedly connected to a conical ring, one end of the conical ring is fixedly connected to the inner wall of the pipe body, the circular pipe and the conical ring are made of rubber material, a circular ring is fixedly connected to the end of the circular pipe away from the conical ring, the outer surface of the circular ring is fixedly connected to the inner wall of the pipe body, a plurality of convex strips are fixedly connected to the inner wall of the circular pipe, the convex strips are linearly distributed on the inner wall of the circular pipe, a plurality of cylinders are fixedly connected to the outer surface of the circular pipe, a spring is arranged on one side of the cylinder, and the upper and lower ends of the spring are respectively fixedly connected to one side of the inner wall of the pipe body and one end of the cylinder.

[0006] The effect achieved by the above components is: by setting the round tube, when a fluid with a large flow rate and a fast flow rate enters the interior of the tube body, it will pass through the tapered ring and enter the interior of the round tube. The impact force of the fluid will cause the rubber tapered ring and the round tube to deform. When the round tube is deformed, it will push the cylinder and compress the spring. The impact force on the round tube is buffered by the rebound force of the spring, and the speed of the water flow is slowed down by the tapered ring and the round tube, and the impact force of the fluid is reduced as much as possible. It is avoided as much as possible that the large impact force when the fluid flows in the tube body causes damage to the opening and closing parts, and long-term corrosion reduces the service life of the valve.

[0007] Preferably, the edge of the connection between the conical ring and the inner wall of the tube body is arc-shaped, and the edge of the connection between the inner wall of the conical ring and the tube body is arc-shaped.

[0008] The effect achieved by the above components is: by setting the connection between the conical ring and the inner wall of the tube body and the edge of the connection with the tube body to be arc-shaped, it is not easy for the fluid to flow back when entering the tube body and entering the circular tube due to impacting the conical ring and the inner wall of the circular tube.

[0009] Preferably, a plurality of reinforcement rings are fixedly connected to the outer surface of the circular tube, and the outer surface of the reinforcement ring is fixedly connected to one end of a plurality of cylinders.

[0010] The effect achieved by the above components is that the connection between the cylinder and the circular tube can be reinforced by setting the reinforcing ring, so as to avoid as much as possible the connection between the cylinder and the circular tube from being broken when the circular tube is displaced due to long-term stress on the circular tube.

[0011] Preferably, a plurality of round rods are fixedly connected to the inner wall of the tube body, and the cylinder slides on the outer surfaces of the round rods.

[0012] The effect achieved by the above components is that when the inner wall of the round tube is impacted to cause the cylinder to shift and compress the spring, the cylinder will slide on the outer surface of the round rod, and the angle between the cylinder and the round tube will be further limited, thereby avoiding lateral displacement of the round tube and causing spring distortion as much as possible.

[0013] Preferably, a cushion block is fixedly connected to the outer surface of the round rod, and one end of the spring away from the cylinder is fixedly connected to one side of the cushion block, and the cushion block is a rubber block made of rubber material.

[0014] The effect achieved by the above components is that when the spring is squeezed, a certain pressure will be generated on the rubber pad, and the force applied to the spring can be further buffered by the rubber pad, thereby improving the buffering effect of the buffer structure.

[0015] Preferably, one end of the pipe body is provided with a filtering structure, the filtering structure includes a filter screen plate, a filter screen is arranged on the outer surface of the filter screen plate, a plurality of clamping blocks are fixedly connected to one side of the filter screen plate, a plurality of rectangular blocks are fixedly connected to the inner wall of the pipe body, and a slot is opened on one side of the rectangular block.

[0016] The effects achieved by the above components are as follows: When installing the valve, several clamping blocks on one side of the filter screen plate can be respectively inserted into the slots on the outer surfaces of the respective rectangular blocks on the inner wall of the pipe body, and the filter screen plate is installed inside the pipe body. The fluid entering the pipe body can be filtered by the filter screen on the outer surface of the filter screen plate, and the impurities in the fluid can be filtered, further avoiding the contact between the impurities and the opening and closing member, and causing wear on the surface of the opening and closing member.

[0017] Preferably, a plurality of rectangular strips are fixedly connected to the outer surface of the clamping block, and the rectangular strips are rubber strips made of rubber.

[0018] The effects achieved by the above components are as follows: By providing rectangular strips made of rubber, the friction force between the clamping block and the inner wall of the slot when the clamping block is inserted into the slot can be increased, so that the clamping block is not easily accidentally detached from the slot.

[0019] Preferably, two groove blocks are fixedly connected to one side of the filter screen plate, and grooves are opened on one side of the two groove blocks.

[0020] The effects achieved by the above components are as follows: When it is necessary to remove the filter screen plate for cleaning and replacement, the clamping block can be more conveniently pulled out from the slot by pinching the groove on the outer surface of the groove block.

[0021] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0022] In the present utility model, by providing a buffer structure, when a fluid with a large flow rate and a fast flow velocity enters the pipe body, the impact force received by the round pipe is buffered by the resilience of the spring, the flow velocity of the water flow is slowed down by the conical ring and the round pipe, and the impact force of the fluid is reduced as much as possible, so as to avoid the large impact force of the fluid flowing in the pipe body from causing damage to the opening and closing member and reducing the service life of the valve due to long-term corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0024] Figure 2 is a partial cross-sectional three-dimensional structural schematic diagram of the pipe body of the present utility model;

[0025] Figure 3 is a three-dimensional structural schematic diagram of the round pipe of the present utility model;

[0026] Figure 4This is a schematic three-dimensional structure diagram of the filter screen plate of the utility model.

[0027] Legend: 1. Housing; 2. Buffer structure; 3. Filter structure; 4. Opening and closing member; 5. Pipe body; 21. Round pipe; 22. Conical ring; 23. Ring; 24. Rib; 25. Cylinder; 26. Spring; 27. Round rod; 28. Cushion block; 29. Reinforcing ring; 31. Rectangular block; 32. Slot; 33. Block; 34. Filter screen plate; 35. Grooved block; 36. Rectangular strip. Specific implementation mode

[0028] Example 1, as Figures 1-3 shown, a high-strength and corrosion-resistant valve casting includes a housing 1. An opening and closing member 4 is arranged inside the housing 1. The opening and closing member 4 is composed of a control rod and a closing plate. One side of the housing 1 is fixedly connected with a pipe body 5. A buffer structure 2 is arranged inside the pipe body 5. The buffer structure 2 includes a round pipe 21. One end of the round pipe 21 is fixedly connected with a conical ring 22. One end of the conical ring 22 is fixedly connected with the inner wall of the pipe body 5. The round pipe 21 and the conical ring 22 are made of rubber. The end of the round pipe 21 away from the conical ring 22 is fixedly connected with a ring 23. The outer surface of the ring 23 is fixedly connected with the inner wall of the pipe body 5. A plurality of ribs 24 are fixedly connected to the inner wall of the round pipe 21. The ribs 24 are linearly distributed on the inner wall of the round pipe 21. A plurality of cylinders 25 are fixedly connected to the outer surface of the round pipe 21. A spring 26 is arranged on one side of the cylinder 25. The upper and lower ends of the spring 26 are respectively fixedly connected with one side of the inner wall of the pipe body 5 and one end of the cylinder 25. By setting the round pipe 21, when a fluid with a large flow rate and a fast flow velocity enters the inside of the pipe body 5, it will enter the inside of the round pipe 21 through the conical ring 22. The impact force of the fluid will cause the rubber conical ring 22 and the round pipe 21 to deform. When the round pipe 21 deforms, it will push the cylinder 25 and compress the spring 26. The impact force received by the round pipe 21 is buffered by the resilience of the spring 26. The flow velocity of the water is slowed down by the conical ring 22 and the round pipe 21, and the impact force of the fluid is reduced as much as possible. As much as possible, it is avoided that the large impact force when the fluid flows in the pipe body 5 causes the opening and closing member 4 to be damaged, and the corrosion phenomenon occurs for a long time, reducing the service life of the valve.

[0029] Refer to Figures 1-3As shown, in this embodiment: The edge of the connection between the conical ring 22 and the inner wall of the pipe body 5 is arc-shaped, and the edge of the connection between the inner wall of the conical ring 22 and the pipe body 5 is arc-shaped. By setting the edges of the connections between the conical ring 22 and the inner wall of the pipe body 5 and between the conical ring 22 and the pipe body 5 to be arc-shaped, when the fluid enters the inside of the pipe body 5 and reaches the circular pipe 21, it is not easy to generate backflow due to impacting the inner walls of the conical ring 22 and the circular pipe 21. A plurality of reinforcing rings 29 are fixedly connected to the outer surface of the circular pipe 21, and one end of a plurality of cylindrical tubes 25 is fixedly connected to the outer surface of the reinforcing rings 29. By setting the reinforcing rings 29, the connection between the cylindrical tubes 25 and the circular pipe 21 can be strengthened, and as much as possible, when the circular pipe 21 is stressed for a long time and the cylindrical tubes 25 are displaced, the connection between the cylindrical tubes 25 and the circular pipe 21 can be prevented from breaking.

[0030] Referring to Figures 1-3 As shown, in this embodiment: A plurality of round rods 27 are fixedly connected to the inner wall of the pipe body 5, and the cylindrical tubes 25 slide on the outer surface of the round rods 27. When the inner wall of the circular pipe 21 is impacted and the cylindrical tubes 25 are displaced and compress the spring 26, the cylindrical tubes 25 will slide on the outer surface of the round rods 27, and the angle between the cylindrical tubes 25 and the circular pipe 21 is further restricted, so as to avoid the circular pipe 21 from undergoing lateral displacement and causing the spring 26 to be distorted as much as possible. A cushion block 28 is fixedly connected to the outer surface of the round rod 27, and one end of the spring 26 away from the cylindrical tube 25 is fixedly connected to one side of the cushion block 28. The cushion block 28 is a rubber block made of rubber material. When the spring 26 is squeezed, it will generate a certain pressure on the rubber cushion block 28. Through the rubber cushion block 28, the force received by the spring 26 can be further buffered, and the buffering effect of the buffering structure 2 can be improved.

[0031] Referring to 1, Figure 2 and Figure 4 As shown, in this embodiment: A filtering structure 3 is provided at one end of the pipe body 5. The filtering structure 3 includes a filter screen plate 34. A filter net is provided on the outer surface of the filter screen plate 34. A plurality of clamping blocks 33 are fixedly connected to one side of the filter screen plate 34. A plurality of rectangular blocks 31 are fixedly connected to the inner wall of the pipe body 5. A slot 32 is opened on one side of the rectangular block 31. When installing the valve, the plurality of clamping blocks 33 on one side of the filter screen plate 34 can be respectively inserted into the slots 32 on the outer surfaces of the respective rectangular blocks 31 on the inner wall of the pipe body 5, and the filter screen plate 34 can be installed inside the pipe body 5. The fluid entering the inside of the pipe body 5 can be filtered through the filter net on the outer surface of the filter screen plate 34, and the impurities in the fluid can be filtered, further avoiding the contact between the impurities and the opening and closing member 4 and causing wear on the surface of the opening and closing member 4.

[0032] Referring to 1, Figure 2 and Figure 4As shown in the figure, in this embodiment: A number of rectangular strips 36 are fixedly connected to the outer surface of the clamping block 33. The rectangular strips 36 are rubber strips made of rubber. By setting the rubber rectangular strips 36, the friction force between the clamping block 33 and the inner wall of the slot 32 when the clamping block 33 is inserted into the slot 32 can be increased, so that the clamping block 33 is not easily accidentally detached from the inside of the slot 32. Two groove blocks 35 are fixedly connected to one side of the filter screen plate 34. Grooves are provided on one side of the two groove blocks 35. When it is necessary to remove the filter screen plate 34 for cleaning and replacement, the clamping block 33 can be more conveniently pulled out from the inside of the slot 32 by pinching the grooves on the outer surface of the groove block 35.

[0033] Working principle: When installing the valve casting, several clamping blocks 33 on one side of the filter screen plate 34 can be respectively inserted into the slots 32 on the outer surfaces of the respective rectangular blocks 31 on the inner wall of the pipe body 5 at one end of the pipe body 5, and the filter screen plate 34 is installed inside the pipe body 5. The valve is connected to the pipeline through the mounting block holes on the outer surface of the housing 1. After the valve is installed, when the fluid enters the pipe body 5, the fluid can be filtered through the filter screen on the outer surface of the filter screen plate 34, and the impurities in the fluid are filtered. Subsequently, the fluid will enter the inside of the round pipe 21 through the conical ring 22. The impact force of the fluid will cause the rubber conical ring 22 and the round pipe 21 to deform. When the round pipe 21 deforms, it will push the cylinder 25 and compress the spring 26. The resilience of the spring 26 buffers the impact force received by the round pipe 21. The speed of the water flow is slowed down by the conical ring 22 and the round pipe 21, and the impact force of the fluid is reduced as much as possible. The angle between the closing plate and the pipe body 5 can be adjusted by controlling the control rod of the opening and closing member 4 to adjust the opening or closing of the valve.

Claims

1. A valve casting with high strength and corrosion resistance, comprising a housing (1), characterized in that: An opening and closing member (4) is arranged inside the housing (1). The opening and closing member (4) is composed of a control rod and a closing plate. A pipe body (5) is fixedly connected to one side of the housing (1). A buffer structure (2) is arranged inside the pipe body (5). The buffer structure (2) includes a circular pipe (21). One end of the circular pipe (21) is fixedly connected to a conical ring (22). One end of the conical ring (22) is fixedly connected to the inner wall of the pipe body (5). The circular pipe (21) and the conical ring (22) are made of rubber. The end of the circular pipe (21) far from the conical ring (22) is fixedly connected to a circular ring (23). The outer surface of the circular ring (23) is fixedly connected to the inner wall of the pipe body (5). A plurality of convex strips (24) are fixedly connected to the inner wall of the circular pipe (21). The convex strips (24) are linearly distributed on the inner wall of the circular pipe (21). A plurality of cylindrical tubes (25) are fixedly connected to the outer surface of the circular pipe (21). A spring (26) is arranged on one side of the cylindrical tube (25). The upper and lower ends of the spring (26) are respectively fixedly connected to one side of the inner wall of the pipe body (5) and one end of the cylindrical tube (25).

2. The high-strength and corrosion-resistant valve casting according to claim 1, wherein: The edge of the connection between the conical ring (22) and the inner wall of the pipe body (5) is arc-shaped. The edge of the connection between the inner wall of the conical ring (22) and the pipe body (5) is arc-shaped.

3. The high-strength and corrosion-resistant valve casting according to claim 2, characterized in that: A plurality of reinforcing rings (29) are fixedly connected to the outer surface of the circular pipe (21). The outer surface of the reinforcing ring (29) is fixedly connected to one end of a plurality of cylindrical tubes (25).

4. The high-strength and corrosion-resistant valve casting according to claim 3, characterized in that: A plurality of round rods (27) are fixedly connected to the inner wall of the pipe body (5). The cylindrical tubes (25) slide on the outer surface of the round rods (27).

5. The high-strength and corrosion-resistant valve casting according to claim 4, wherein: A cushion block (28) is fixedly connected to the outer surface of the round rod (27). The end of the spring (26) far from the cylindrical tube (25) is fixedly connected to one side of the cushion block (28). The cushion block (28) is a rubber block made of rubber material.

6. A high-strength and corrosion-resistant valve casting according to claim 5, characterized in that: A filtering structure (3) is arranged at one end of the pipe body (5). The filtering structure (3) includes a filter screen plate (34). A filter screen is arranged on the outer surface of the filter screen plate (34). A plurality of clamping blocks (33) are fixedly connected to one side of the filter screen plate (34). A plurality of rectangular blocks (31) are fixedly connected to the inner wall of the pipe body (5). A slot (32) is opened on one side of the rectangular block (31).

7. The high-strength and corrosion-resistant valve casting according to claim 6, characterized in that: A plurality of rectangular strips (36) are fixedly connected to the outer surface of the clamping block (33). The rectangular strips (36) are rubber strips made of rubber material.

8. A high-strength and corrosion-resistant valve casting according to claim 7, characterized in that: Two groove blocks (35) are fixedly connected to one side of the filter screen plate (34). Grooves are opened on one side of the two groove blocks (35).

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