Rubber valve seat of butterfly valve

Abstract

The utility model relates to the technical field of valves, and discloses a butterfly valve rubber valve seat which comprises a valve body, a rubber valve seat fixing mechanism is fixedly installed on the inner surface of the valve body, and the rubber valve seat fixing mechanism comprises a rubber seat, a fixing column, a bolt, a rubber drainage block, a hidden cover, a buckling groove, a connecting block, a sliding soft rod, a sliding groove, a clamping block and a clamping groove. According to the rubber valve seat of the butterfly valve, the rubber seat is placed in the valve body, the clamping groove in the rubber seat is aligned with the fixing column in the valve body, the fixing column is connected with the clamping groove in a clamped mode, then the hidden cover on the rubber seat is clamped into the clamping groove, and the rubber seat is fixedly installed on the valve body through a flange. And finally, the flange on the communicating pipe is aligned with the flange on the valve body, the rubber drainage block is sleeved with the communicating pipe and then fixed through the bolt and the nut, and when the rubber valve seat needs to be replaced, a user firstly disassembles the communicating pipe, then buckles the buckling groove through tweezers and pulls out the hidden cover by applying force outwards.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and specifically relates to a rubber valve seat for a butterfly valve. Background Technique

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve that uses a disc-shaped opening and closing member to reciprocate and rotate about 90° to open, close, or regulate the flow rate of a medium. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media. The butterfly valve not only has a simple structure, small size, light weight, low material consumption, small installation size, small driving torque, simple and rapid operation, but also can simultaneously have good flow regulation function and closing and sealing characteristics. It is one of the fastest-developing valve varieties in the past decade or so. The use of butterfly valves is very extensive. The varieties and quantities used continue to expand, and they are developing towards high temperature, high pressure, large diameter, high sealing performance, long life, excellent regulating characteristics, and multi-function of one valve. Its reliability and other performance indicators have reached a relatively high level. With the application of chemically resistant synthetic rubber in butterfly valves, the performance of butterfly valves has been improved. Because synthetic rubber has the characteristics of corrosion resistance, erosion resistance, dimensional stability, good resilience, easy forming, low cost, etc., and different synthetic rubbers with different performances can be selected according to different usage requirements to meet the working conditions of butterfly valves. Currently, synthetic rubber is mainly used on the valve seats of butterfly valves.

[0003] The rubber valve seat is usually installed in the valve body of the butterfly valve. By using the elasticity of the rubber, the rubber valve seat fits and is inserted into the valve body of the butterfly valve, thereby ensuring the sealing performance of the valve body. However, most of the current rubber valve seats of butterfly valves are difficult to disassemble after installation. It is necessary to first disassemble the opening and closing member and the rotating shaft for installing the opening and closing member, which is not convenient for people to maintain and repair the butterfly valve. At the same time, because the rubber valve seat in the butterfly valve is thicker than the butterfly valve, and the thicknesses of rubber valve seats of different specifications are different, the pipe diameters connected to the butterfly valve are different after installation, resulting in different erosion of the rubber valve seat by the water flow, and different service lives of the rubber valve seats. Therefore, there are certain defects in the rubber valve seat. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the above-mentioned drawbacks of the prior art, the present utility model provides a rubber valve seat for a butterfly valve, which can effectively solve the problems of the prior art.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the present utility model is achieved through the following technical solutions:

[0008] The utility model discloses a rubber valve seat for a butterfly valve, which comprises a valve body. A rubber valve seat fixing mechanism is fixedly installed on the inner surface of the valve body. The rubber valve seat fixing mechanism includes a rubber seat, a fixing column, a bolt, a rubber drainage block, a hidden cover, a buckle groove, a connecting block, a sliding soft rod, a chute, a clamping block and a clamping groove. A communicating pipe is fixedly installed on the outer surface of the valve body through a flange.

[0009] Furthermore, the clamping groove is formed on the inner surface of the rubber seat. The outer surface of the fixing column is clamped with the inner surface of the clamping groove. The outer surface of the fixing column is fixedly connected with the inner wall of the valve body.

[0010] Furthermore, the outer surface of the bolt is fixedly connected with the inner surface of the fixing column. The chute is formed on the inner surface of the rubber seat.

[0011] Furthermore, the outer surface of the clamping block is slidably connected with the inner surface of the chute. The right side of the clamping block is fixedly connected with the left side of the sliding soft rod. The front surface of the sliding soft rod is fixedly connected with the back surface of the connecting block.

[0012] Furthermore, the front surface of the connecting block is fixedly connected with the outer surface of the hidden cover. The outer surface of the hidden cover is clamped with the inner surface of the clamping groove. The buckle groove is formed on the outer surface of the hidden cover.

[0013] Furthermore, the front surface of the rubber seat is fixedly connected with the back surface of the rubber drainage block. The inner surface of the communicating pipe is clamped with the outer surface of the rubber drainage block.

[0014] Furthermore, a valve flap is rotatably installed on the inner surface of the valve body. A rotating rod is fixedly installed on the inner surface of the valve flap. The top end of the rotating rod penetrates through the valve body and extends to the outside of the valve body. A handle is fixedly installed at the top of the rotating rod.

[0015] (III) Beneficial effects

[0016] Adopting the technical solution provided by the utility model, compared with the known public technology, the following beneficial effects are achieved:

[0017] 1. The utility model designs for the quick disassembly of the rubber valve seat. Through the cooperation of the valve body, the fixing column with the clamping groove and the rubber seat, the cooperation of the fixing column and the bolt with the rubber seat, the cooperation of the rubber seat and the chute with the clamping block and the sliding soft rod, and the cooperation of the sliding soft rod and the connecting block with the hidden cover and the buckle groove, the rubber seat can be quickly removed, avoiding the problem that the whole butterfly valve needs to be removed to take down the rubber seat when the rubber seat is disassembled.

[0018] 2. Through the cooperation of the communicating pipe and the rubber seat, and the cooperation of the rubber seat and the rubber drainage block, the utility model reduces the erosion of the water flow on the rubber valve seat inside the valve body, and improves the service life of the rubber valve seat inside the butterfly valve. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Is a three-dimensional structure diagram of the present invention;

[0021] Figure 2 Is a three-dimensional structure diagram of the rubber valve seat fixing mechanism and the valve body in the embodiment;

[0022] Figure 3 Is a three-dimensional structure diagram of the valve body in the embodiment;

[0023] Figure 4 Is a front view of the internal structure of the present invention;

[0024] Figure 5 Is a partial cross-sectional view of the three-dimensional structure of the rubber valve seat fixing mechanism in the embodiment;

[0025] Figure 6 In the embodiment Figure 5 Is an enlarged view of A in.

[0026] The reference numerals in the drawings respectively represent: 1. Valve body; 2. Rubber valve seat fixing mechanism; 201. Rubber seat; 202. Fixed column; 203. Bolt; 204. Rubber drainage block; 205. Hidden cover; 206. Buckle groove; 207. Connecting block; 208. Sliding soft rod; 209. Chute; 210. Block; 211. Card slot; 3. Flange; 4. Connecting pipe; 5. Valve; 6. Rotating rod; 7. Handle. Detailed Embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0028] The following further describes the present invention with reference to the embodiments.

[0029] Refer to Figures 1-6, a butterfly valve rubber seat in this embodiment includes a valve body 1, and a rubber seat fixing mechanism 2 is fixedly installed on the inner surface of the valve body 1. The rubber seat fixing mechanism 2 includes a rubber seat 201, a fixing column 202, a bolt 203, a rubber drainage block 204, a hidden cover 205, a buckle groove 206, a connecting block 207, a sliding soft rod 208, a chute 209, a clamping block 210 and a clamping groove 211. A communicating pipe 4 is fixedly installed on the outer surface of the valve body 1 through a flange 3.

[0030] As Figures 1-4 shown, the flange 3 on the communicating pipe 4 and the flange 3 on the valve body 1 are fixed by bolts and nuts.

[0031] As Figures 1-4 shown, the clamping groove 211 is opened on the inner surface of the rubber seat 201, the inner surface of the clamping groove 211 is clamped with the outer surface of the fixing column 202, and the outer surface of the fixing column 202 is fixedly connected to the inner wall of the valve body 1.

[0032] As Figures 1-4 shown, the outer surface of the bolt 203 is fixedly connected to the inner surface of the fixing column 202, and the chute 209 is opened on the inner surface of the rubber seat 201.

[0033] As Figure 5 shown, the inner surface of the chute 209 is slidably connected to the outer surface of the clamping block 210, the right side of the clamping block 210 is fixedly connected to the left side of the sliding soft rod 208, and the front surface of the sliding soft rod 208 is fixedly connected to the back surface of the connecting block 207.

[0034] As Figure 2 and 4 shown, the front surface of the connecting block 207 is fixedly connected to the outer surface of the hidden cover 205, the outer surface of the hidden cover 205 is clamped with the inner surface of the clamping groove 211, and the buckle groove 206 is opened on the outer surface of the hidden cover 205.

[0035] As Figure 2 and 4 shown, the front surface of the rubber seat 201 is fixedly connected to the back surface of the rubber drainage block 204, and the inner surface of the communicating pipe 4 is clamped with the outer surface of the rubber drainage block 204.

[0036] As Figures 1-4 shown, a valve flap 5 is rotatably installed on the inner surface of the valve body 1, a rotating rod 6 is fixedly installed on the inner surface of the valve flap 5, the top of the rotating rod 6 penetrates through the valve body 1 and extends to the outside of the valve body 1, and a handle 7 is fixedly installed on the top of the rotating rod 6.

[0037] As Figures 1-4 shown, by rotating the handle 7, the handle 7 drives the valve flap 5 to rotate through the rotating rod 6, so that the valve body 1 is opened or closed.

[0038] In summary, for the rubber valve seat of this butterfly valve, first place the rubber seat 201 into the valve body 1, align the card slot 211 on the rubber seat 201 with the fixed column 202 in the valve body 1, so that the fixed column 202 is engaged with the card slot 211. Then, snap the hidden cover 205 on the rubber seat 201 into the card slot 211. Finally, align the flange 3 on the connecting pipe 4 with the flange 3 on the valve body 1, slip the rubber drainage block 204 onto the connecting pipe 4, and then fix them with bolts and nuts. When the rubber valve seat needs to be replaced, the user first removes the connecting pipe 4, then uses tweezers to hold the buckling groove 206 and pulls out the hidden cover 205 with an outward force. The hidden cover 205 drives the sliding soft rod 208 to slide in the sliding groove 209 through the connecting block 207, and the sliding soft rod 208 drives the latch 210 to slide, so that the hidden cover 205 can be fixed in the rubber seat 201 and will not be washed away by the water flow. Then, take out the fixing bolt 203 to remove the rubber seat 201 without disassembling the butterfly valve to remove the rubber seat 201.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A butterfly valve rubber seat, comprising a valve body (1), characterized in that: A rubber valve seat fixing mechanism (2) is fixedly installed on the inner surface of the valve body (1). The rubber valve seat fixing mechanism (2) includes a rubber seat (201), a fixing column (202), a bolt (203), a rubber drainage block (204), a hidden cover (205), a buckling groove (206), a connecting block (207), a sliding soft rod (208), a sliding groove (209), a clamping block (210) and a clamping groove (211). A communicating pipe (4) is fixedly installed on the outer surface of the valve body (1) through a flange (3).

2. The butterfly valve rubber seat according to claim 1, wherein: The clamping groove (211) is formed on the inner surface of the rubber seat (201). The inner surface of the clamping groove (211) is clamped with the outer surface of the fixing column (202). The outer surface of the fixing column (202) is fixedly connected to the inner wall of the valve body (1).

3. A butterfly valve rubber seat according to claim 1, characterized in that: The outer surface of the bolt (203) is fixedly connected to the inner surface of the fixing column (202). The sliding groove (209) is formed on the inner surface of the rubber seat (201).

4. A butterfly valve rubber seat according to claim 1, characterized in that: The inner surface of the sliding groove (209) is slidably connected to the outer surface of the clamping block (210). The right side of the clamping block (210) is fixedly connected to the left side of the sliding soft rod (208). The front surface of the sliding soft rod (208) is fixedly connected to the back surface of the connecting block (207).

5. A butterfly valve rubber seat according to claim 1, characterized in that: The front surface of the connecting block (207) is fixedly connected to the outer surface of the hidden cover (205). The outer surface of the hidden cover (205) is clamped with the inner surface of the clamping groove (211). The buckling groove (206) is formed on the outer surface of the hidden cover (205).

6. A butterfly valve rubber seat according to claim 1, characterized in that: The front surface of the rubber seat (201) is fixedly connected to the back surface of the rubber drainage block (204). The inner surface of the communicating pipe (4) is clamped with the outer surface of the rubber drainage block (204).

7. A butterfly valve rubber seat according to claim 1, characterized in that: A valve flap (5) is rotatably installed on the inner surface of the valve body (1). A rotating rod (6) is fixedly installed on the inner surface of the valve flap (5). The top of the rotating rod (6) penetrates through the valve body (1) and extends to the outside of the valve body (1). A handle (7) is fixedly installed on the top of the rotating rod (6).

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