Integral vulcanized rubber valve seat of butterfly valve

Abstract

The utility model discloses an integral vulcanized rubber valve seat of a butterfly valve, which belongs to the technical field of rubber valve seats and comprises a rubber valve seat main body mounted in the butterfly valve, rubber sleeves are mounted at two ends of the rubber valve seat main body, the rubber valve seat main body comprises a valve seat a and a valve seat b which are oppositely arranged, and the valve seat a and the valve seat b are connected through a clamping component. A reinforcing sleeve is arranged between the rubber valve seat body and the rubber sleeve, a fastening screw hole is formed in the side wall of the rubber sleeve, a fastening screw groove is formed in the position, located at the fastening screw hole, of the side wall of the reinforcing sleeve, a fastening screw is connected into the fastening screw hole and the fastening screw groove in a threaded mode, and the clamping assembly comprises a clamping block installed on the side wall of the valve seat a and a clamping groove formed in the side wall of the valve seat b. According to the overall vulcanized rubber valve seat of the butterfly valve, the rubber sleeves at the two ends of the rubber valve seat body are detached, the two valve seats are detached through the clamping assemblies, then the rubber valve seat body is pulled out of the valve body, operation is easy, and people can effectively and conveniently maintain and repair the butterfly valve.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber valve seats, and specifically relates to an integrally vulcanized rubber valve seat for a butterfly valve. Background Art

[0002] A butterfly valve, also called 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 valve varieties that have developed the fastest in the past decade or so. The use of butterfly valves is very extensive. The varieties and quantities of their use are still continuing to expand, and they are developing towards high temperature, high pressure, large diameter, high sealing performance, long service 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 on 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] However, the current rubber valve seats are usually installed in the valve body of the butterfly valve. By using the elasticity of the rubber, the rubber valve seat is fitted and inserted into the valve body of the butterfly valve to ensure the sealing performance of the valve body. However, most of the current rubber valve seats of butterfly valves are relatively 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 inconvenient for people to maintain and repair the butterfly valve. Moreover, for the integrally vulcanized rubber valve seat and the valve body flange end face groove of the elastic seal center butterfly valve, due to the paint residue remaining in the valve body end face groove, the paint residue cannot be polished cleanly, resulting in the peeling off of the rubber coating and the shortening of the rubber service life. During the use of the valve, the rubber valve seat is unstable. Therefore, the existing technology needs to be improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an integrally vulcanized rubber valve seat for a butterfly valve to solve the problem that the current rubber valve seats are usually installed in the valve body of the butterfly valve. By using the elasticity of the rubber, the rubber valve seat is fitted and inserted into the valve body of the butterfly valve to ensure the sealing performance of the valve body. However, most of the current rubber valve seats of butterfly valves are relatively 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 inconvenient for people to maintain and repair the butterfly valve as mentioned in the above background art.

[0005] To achieve the above object, the present utility model provides the following technical solution: An integral vulcanized rubber valve seat for a butterfly valve, comprising a rubber valve seat main body installed inside the butterfly valve. Rubber sleeves are installed at both ends of the rubber valve seat main body. The rubber valve seat main body includes two relatively arranged valve seats a and valve seats b, and the valve seats a and valve seats b are connected by a clamping assembly. A reinforcing sleeve is provided between the rubber valve seat main body and the rubber sleeve. A fastening screw hole is provided on the side wall of the rubber sleeve, and a fastening screw groove is provided on the side wall of the reinforcing sleeve at the position of the fastening screw hole. A fastening screw is screwed into the fastening screw hole and the fastening screw groove. The clamping assembly includes a clamping block installed on the side wall of valve seat a and a clamping groove opened on the side wall of valve seat b, and the clamping block is clamped in the clamping groove.

[0006] Preferably, a clamping cavity is provided on the side wall of the clamping block, and an elastic member is installed on the inner wall of the clamping cavity.

[0007] Preferably, inclined convex surfaces are provided on both sides of the end of the clamping block, and inclined grooves are provided on both inner side walls of the clamping groove, and the inclined convex surfaces and the inclined grooves cooperate with each other.

[0008] Preferably, a sealing gasket a and a sealing gasket b are sleeved on the outer wall of the fastening screw, and a fixing ring is installed on the side wall of the sealing gasket a facing the sealing gasket b.

[0009] Preferably, rubber blocks are evenly and equidistantly installed on the side wall of the fixing ring along the axis of the fastening screw, and a sealing cover is installed at the end of the fastening screw, and the sealing cover is arranged in the fastening screw hole.

[0010] Preferably, a protective cover is inserted at the position of the fastening screw hole on the outer wall of the rubber sleeve, and an interference fit is provided between the outer wall of the protective cover and the inner wall of the fastening screw hole.

[0011] Preferably, a filling cavity is provided inside the reinforcing sleeve, and a filling member is assembled on the inner wall of the filling cavity.

[0012] Preferably, the rubber valve seat main body is made of vulcanized rubber material, and a U-shaped groove is provided on the end face of the butterfly valve body.

[0013] Compared with the prior art, the beneficial effect of the present utility model is: The integral vulcanized rubber valve seat for the butterfly valve has a reasonable structural design. When people need to disassemble the rubber valve seat main body, there is no need to disassemble the opening and closing member and the rotating shaft for installing the opening and closing member. By removing the rubber sleeves at both ends of the rubber valve seat main body and disassembling the two valve seats through the clamping assembly, the rubber valve seat main body can be pulled out from the valve body. The operation is simple, which effectively facilitates people to maintain and repair the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 Schematic diagram of the reinforcement sleeve of the present utility model;

[0016] Figure 3 Schematic diagram of the fastening screw of the present utility model;

[0017] Figure 4 Schematic diagram of the clamping assembly of the present utility model;

[0018] Figure 5 Cross-sectional view of the butterfly valve body and the rubber valve seat body of the present utility model.

[0019] In the figure: 1, rubber valve seat body; 101, valve seat b; 102, valve seat a; 2, rubber sleeve; 3, protective cover; 4, clamping assembly; 5, reinforcement sleeve; 51, clamping block; 52, clamping groove; 53, elastic member; 54, inclined convex surface; 55, inclined groove; 56, clamping cavity; 6, fastening screw groove; 7, filling cavity; 8, filling member; 9, fastening screw; 10, sealing gasket b; 11, rubber block; 12, fixing ring; 13, sealing gasket a; 14, sealing cover; 15, butterfly valve body; 16, U-shaped groove. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0022] In this technical solution, a butterfly valve integral vulcanized rubber valve seat includes a rubber valve seat body 1 installed in the butterfly valve. Rubber sleeves 2 are installed at both ends of the rubber valve seat body 1. The rubber valve seat body 1 includes two relatively arranged valve seats a 102 and valve seats b 101. The valve seats a 102 and valve seats b 101 are connected by a clamping assembly 4. A reinforcement sleeve 5 is provided between the rubber valve seat body 1 and the rubber sleeve 2. A fastening screw hole is opened on the side wall of the rubber sleeve 2, and a fastening screw groove 6 is opened on the side wall of the reinforcement sleeve 5 at the position of the fastening screw hole. A fastening screw 9 is screwed in the fastening screw hole and the fastening screw groove 6. The clamping assembly 4 includes a clamping block 51 installed on the side wall of the valve seat a 102 and a clamping groove 52 opened on the side wall of the valve seat b 101. The clamping block 51 is clamped in the clamping groove 52;

[0023] In this technical solution, the rubber valve seat body 1 can be on the butterfly valve shaft and is composed of two valve seats a102 and valve seat b101 with the same structure and arranged oppositely. The connection between the two is connected by a clamping component 4. After being installed on the butterfly valve, both ends are secondarily fixed by rubber sleeves 2 and filled and sealed by reinforcement sleeves 5. After the rubber sleeve 2 is installed on the rubber valve seat body 1, the fastening screw holes on the rubber sleeve 2 correspond to the fastening screw grooves 6 on the reinforcement sleeve 5, and then it is fixed by a fastening screw 9.

[0024] In some technical solutions, referring to Figures 1-4 , a clamping cavity 56 is provided on the side wall of the clamping block 51, and an elastic member 53 is installed on the inner wall of the clamping cavity 56;

[0025] In this technical solution, the clamping cavity 56 provided at the end of the clamping block 51 makes the inside of the clamping block 51 hollow, and then the elasticity of the clamping block 51 is improved by the elastic member 53.

[0026] In some technical solutions, referring to Figures 1-4 , inclined convex surfaces 54 are provided on both sides of the end of the clamping block 51, and inclined grooves 55 are provided on the inner walls of both sides of the clamping groove 52, and the inclined convex surfaces 54 and the inclined grooves 55 cooperate with each other;

[0027] In this technical solution, the inclined convex surfaces 54 provided at the end of the clamping block 51 through the clamping cavity 56 are separated outward, and the inclined grooves 55 cooperating with it facilitate the clamping block 51 to be clamped into and out of the clamping groove 52, and thus facilitate the connection between the valve seat a 102 and the valve seat b101.

[0028] In some technical solutions, referring to Figures 1-4 , a sealing gasket a13 and a sealing gasket b10 are sleeved on the outer wall of the fastening screw 9, and a fixing ring 12 is installed on the side wall of the sealing gasket a13 facing the sealing gasket b10;

[0029] In this technical solution, the gap between the fastening screw 9 and the fastening screw hole is sealed by the sealing gasket a13 and the sealing gasket b10.

[0030] In some technical solutions, referring to Figures 1-4 , rubber blocks 11 are evenly and equidistantly installed on the side wall of the fixing ring 12 along the axis of the fastening screw 9, and a sealing cover 14 is installed at the end of the fastening screw 9, and the sealing cover 14 is arranged in the fastening screw hole;

[0031] In this technical solution, the sealing gasket a 13 and the sealing gasket b 10 are connected by the rubber blocks 11.

[0032] In some technical solutions, referring to Figures 1-4 , a protective cover 3 is inserted at the position of the fastening screw hole on the outer wall of the rubber sleeve 2, and an interference fit is provided between the outer wall of the protective cover 3 and the inner wall of the fastening screw hole;

[0033] In this technical solution, the fastening screw hole can be protected by the protective cover 3. A U-shaped groove 16 is provided on the end face of the butterfly valve body 15. A U-shaped groove is machined on the end face groove of the valve body flange, so that the paint residues sink into the U-shaped groove. The overall vulcanized rubber can also be in the U-shaped groove, making the rubber more firmly stuck in the end face groove of the valve body flange.

[0034] Working principle: When in use, first, install the combined rubber valve seat body 1 into the butterfly valve. Then, put the reinforcement sleeve 5 on both ends of the rubber valve seat body 1. Then, put the rubber sleeve 2 on the outside of the reinforcement sleeve 5. Align the fastening screw hole and the fastening screw groove 6, and connect and fix them through the fastening screw 9. Install the protective cover 3 into the fastening screw hole. When maintenance is needed, the reverse operation can be performed to disassemble and repair the rubber valve seat body 1.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0036] Although the present invention has been described above with reference to embodiments, various improvements can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the sake of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An integral vulcanized rubber valve seat for a butterfly valve, comprising a rubber valve seat body (1) installed in a butterfly valve body (15), characterized in that: Rubber sleeves (2) are installed at both ends of the rubber valve seat body (1). The rubber valve seat body (1) includes two oppositely arranged valve seats a (102) and valve seats b (101). The valve seats a (102) and valve seats b (101) are connected by a clamping assembly (4). A reinforcing sleeve (5) is provided between the rubber valve seat body (1) and the rubber sleeve (2). A fastening screw hole is provided on the side wall of the rubber sleeve (2). A fastening screw groove (6) is provided on the side wall of the reinforcing sleeve (5) at the position of the fastening screw hole. A fastening screw (9) is screwed in the fastening screw hole and the fastening screw groove (6). The clamping assembly (4) includes a clamping block (51) installed on the side wall of the valve seat a (102) and a clamping groove (52) provided on the side wall of the valve seat b (101). The clamping block (51) is clamped in the clamping groove (52). A U-shaped groove (16) is provided on the end face of the butterfly valve body (15).

2. The integral vulcanized rubber valve seat of a butterfly valve according to claim 1, characterized in that: A clamping cavity (56) is provided on the side wall of the clamping block (51), and an elastic member (53) is installed on the inner wall of the clamping cavity (56).

3. The integral vulcanized rubber valve seat of a butterfly valve according to claim 2, characterized in that: Oblique convex surfaces (54) are provided on both sides of the end of the clamping block (51), and oblique grooves (55) are provided on both inner walls of the clamping groove (52). The oblique convex surfaces (54) and the oblique grooves (55) are matched with each other.

4. A butterfly valve integral vulcanized rubber seat according to claim 1, characterized in that: Sealing gasket a (13) and sealing gasket b (10) are sleeved on the outer wall of the fastening screw (9). A fixing ring (12) is installed on the side wall of the sealing gasket a (13) facing the sealing gasket b (10).

5. A butterfly valve integral vulcanized rubber seat according to claim 4, characterized in that: Rubber blocks (11) are evenly and equidistantly installed on the side wall of the fixing ring (12) along the axis of the fastening screw (9). A sealing cover (14) is installed at the end of the fastening screw (9), and the sealing cover (14) is arranged in the fastening screw hole.

6. The integral vulcanized rubber valve seat of a butterfly valve according to claim 1, characterized in that: A protective cover (3) is inserted at the position of the fastening screw hole on the outer wall of the rubber sleeve (2), and an interference fit is provided between the outer wall of the protective cover (3) and the inner wall of the fastening screw hole.

7. A vulcanized rubber valve seat for a butterfly valve as claimed in claim 1, characterized in that: A filling cavity (7) is provided inside the reinforcing sleeve (5), and a filling member (8) is assembled on the inner wall of the filling cavity (7).

8. A vulcanized rubber valve seat for a butterfly valve as claimed in claim 1, wherein: The rubber valve seat body (1) is made of vulcanized rubber material.

Images