Removable seat structure for ball valve

Abstract

The utility model relates to the technical field of ball valve, and disclose detachable valve seat structure of ball valve is installed on the valve body and is located the both sides of the ball, including valve seat body, the both sides of valve body all are equipped with the opening, the ball is arranged in the inside center of valve body, valve seat body is equipped with two, two valve seat bodies are arranged respectively in the opening of the both sides of valve body and are located the both sides of the ball, the both sides of valve body opening place outside all are equipped with the connecting pipe, two connecting pipes are all equipped with the fixed ring in the outside of the one end of mutual approach, and the fixed link is arranged on the fixed ring. The detachable valve seat structure of ball valve, through being provided with the clamping groove, the valve seat body is inserted into the inside of valve body through the opening and is contacted with the surface of the ball, the valve seat body end is located outside at this moment, and then the connecting pipe is installed, first, the sealing gasket is placed in the clamping groove, and then the connecting pipe is butt jointed with the valve body opening, and then the valve seat body end can be clamped into the inside of the clamping groove, realizes the effective installation of valve seat body, and the whole operation is simple.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically to a detachable valve seat structure for ball valves. Background Technology

[0002] A ball valve is a type of valve that controls the flow of fluid by rotating a ball. Due to its simple structure, good sealing performance, and convenient operation, it is widely used in many fields such as petroleum, chemical, water treatment, natural gas, and power.

[0003] The ball valve seat is a key sealing component in a ball valve. It is located between the valve body and the ball and is responsible for forming a reliable seal when the valve is closed to prevent fluid from passing through. At the same time, it provides the necessary seal to reduce internal leakage during the opening and closing of the valve. After prolonged use, ball valve seats need to be replaced due to wear. However, the existing valve seat installation process is cumbersome and often uses bolts to fix it inside the valve body. Non-professionals cannot disassemble and replace the valve seat, and returning it to the factory for repair is time-consuming and laborious. Therefore, there is a need to provide a detachable valve seat structure for ball valves to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a detachable valve seat structure for a ball valve, which solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a detachable valve seat structure for a ball valve, which is installed on the valve body and located on both sides of the ball, including a valve seat body. Openings are provided on both sides of the valve body. The ball is located in the center of the valve body. Two valve seat bodies are provided, and the two valve seat bodies are respectively located in the openings on both sides of the valve body and on both sides of the ball. A connecting pipe is provided on the outer side of the openings on both sides of the valve body. A fixing ring is provided on the outer side of each of the two connecting pipes that are close to each other. A fixing rod is provided on the fixing ring.

[0006] Preferably, the end face of the connecting pipe near the fixing ring has a groove, and a sealing gasket is provided inside the groove.

[0007] Preferably, one end of the valve seat body is inserted into the slot and contacts the sealing gasket, while the other end of the valve seat body away from the sealing gasket extends into the valve body through an opening and contacts the surface of the ball.

[0008] Preferably, an annular mounting groove is formed on the outer surface of the valve seat body, and a sealing ring is provided inside the annular mounting groove.

[0009] Preferably, the outer side of the fixing ring has a plurality of lugs arranged in a circular array, and the lugs are provided with perforations.

[0010] Preferably, a limiting plate is provided at one end of the fixed connecting rod, and an external thread is provided on the outer surface of the end of the fixed connecting rod away from the limiting plate.

[0011] Preferably, the end of the fixed connecting rod away from the limiting plate passes through the through hole and is connected to a fastening nut via an external thread.

[0012] Preferably, a connecting flange is provided at the end of the connecting pipe away from the fixing ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The detachable valve seat structure of this ball valve features a slot. During installation, the valve seat body is first inserted into the valve body through the opening and contacts the ball surface. At this time, the end of the valve seat body is on the outside. Then, the connecting pipe is installed. The slot on the end face of the connecting pipe facilitates the placement of a sealing gasket in the slot. Then, the connecting pipe is connected to the valve body opening, and the end of the valve seat body can be snapped into the slot, achieving effective installation of the valve seat body. The overall operation is simple.

[0014] 2. The detachable valve seat structure of this ball valve is equipped with a fixed connecting rod. After the connecting pipe is connected to the valve body opening and the valve seat body is installed, the fixed connecting rod is passed through the through holes on the fixing rings of the two connecting pipes and tightened with a fastening nut. This achieves an effective connection between the connecting pipe and the valve body, ensures the stability of the valve seat body, and facilitates the disassembly and replacement of the valve seat body in the future, saving time and effort. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the detachable valve seat of the ball valve of this utility model; Figure 2 This is a cross-sectional view of the detachable valve seat structure of the ball valve of this utility model; Figure 3 This is a partial exploded view of the detachable valve seat structure of the ball valve of this utility model; Figure 4 This is a schematic diagram of the connecting pipe and the fixing rod of this utility model; Figure 5 This is a schematic diagram of the structure of the valve seat body and the sealing ring of this utility model.

[0016] In the diagram: 1. Valve body; 2. Ball; 3. Connecting pipe; 301. Connecting flange; 302. Retaining ring; 303. Slot; 304. Lug; 305. Perforation; 4. Fixing rod; 401. External thread; 402. Fastening nut; 5. Valve seat body; 501. Annular mounting groove; 6. Sealing gasket; 7. Sealing ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-5 The detachable valve seat structure of the ball valve is installed on the valve body 1 and located on both sides of the ball 2. It includes the valve seat body 5. Openings are provided on both sides of the valve body 1. The ball 2 is located in the center of the valve body 1. There are two valve seat bodies 5. The two valve seat bodies 5 are respectively located in the openings on both sides of the valve body 1 and on both sides of the ball 2. A connecting pipe 3 is provided on the outer side of the opening on both sides of the valve body 1. A fixing ring 302 is provided on the outer side of the two connecting pipes 3 that are close to each other. A fixing rod 4 is provided on the fixing ring 302.

[0019] The connecting pipe 3 has a groove 303 on one end face near the fixing ring 302. A sealing gasket 6 is provided inside the groove 303. One end of the valve seat body 5 is inserted into the groove 303 and contacts the sealing gasket 6. The other end of the valve seat body 5, away from the sealing gasket 6, extends into the valve body 1 through an opening and contacts the surface of the ball 2. During installation, the valve seat body 5 is first inserted into the valve body 1 through the opening and contacts the surface of the ball 2. At this time, the end of the valve seat body 5 is located outside. Then the connecting pipe 3 is installed. The groove 303 on the end face of the connecting pipe 3 facilitates the placement of the sealing gasket 6 in the groove 303 first. Then the connecting pipe 3 is connected to the opening of the valve body 1, and the end of the valve seat body 5 can be inserted into the groove 303, thus realizing the effective installation of the valve seat body 5.

[0020] The valve seat body 5 has an annular mounting groove 501 on its outer surface. A sealing ring 7 is provided inside the annular mounting groove 501. The annular mounting groove 501 on the outer surface of the valve seat body 5 facilitates the installation of the sealing ring 7. The sealing ring 7 can effectively cooperate with the sealing gasket 6 to ensure the sealing performance of the connection.

[0021] Among them, the outer side of the fixing ring 302 has a number of lugs 304 arranged in a circular array, and the lugs 304 are provided with through holes 305. The fixing ring 302 and the lugs 304 facilitate the installation of the fixing rod 4 through the through holes 305.

[0022] The fixed connecting rod 4 has a limiting plate at one end and an external thread 401 on the outer surface of the end of the fixed connecting rod 4 away from the limiting plate. The end of the fixed connecting rod 4 away from the limiting plate passes through the through hole 305 and is threaded with a fastening nut 402 through the external thread 401. After the connecting pipe 3 is connected to the valve body 1 and the valve seat body 5 is installed, the fixed connecting rod 4 is passed through the through holes 305 on the fixing rings 302 of the two connecting pipes 3 and the fastening nut 402 is tightened. This achieves effective connection between the connecting pipe 3 and the valve body 1 and ensures the stability of the valve seat body 5. The operation is simple and the valve seat body 5 is easy to disassemble and replace later, saving time and effort.

[0023] The connecting pipe 3 is provided with a connecting flange 301 at the end away from the fixing ring 302. One end of the connecting pipe 3 is connected to the valve body 1, while the end of the connecting pipe 3 away from the fixing ring 302 can be effectively used to connect to external pipelines through the connecting flange 301.

[0024] Working principle: During installation, the valve seat body 5 is first inserted into the valve body 1 through the opening and contacts the surface of the ball 2. At this time, the end of the valve seat body 5 is located outside. Then, the connecting pipe 3 is installed. A groove 303 is provided on the end face of the connecting pipe 3, which facilitates the placement of a sealing gasket 6 in the groove 303. Then, the connecting pipe 3 is connected to the opening of the valve body 1, and the end of the valve seat body 5 can be inserted into the groove 303, thus realizing the effective installation of the valve seat body 5.

[0025] Furthermore, after the connecting pipe 3 is connected to the opening of the valve body 1 and the valve seat body 5 is installed, the fixing rod 4 is passed through the through holes 305 on the fixing rings 302 of the two connecting pipes 3 and the fastening nut 402 is tightened, thereby realizing the effective connection between the connecting pipe 3 and the valve body 1 and ensuring the stable position of the valve seat body 5. The overall operation is simple, and the valve seat body 5 is easy to disassemble and replace in the later stage, saving time and effort.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable valve seat structure for a ball valve, mounted on the valve body (1) and located on both sides of the ball (2), characterized in that, Includes valve seat body (5), the valve body (1) has openings on both sides, the ball (2) is located in the center of the valve body (1), there are two valve seat bodies (5), the two valve seat bodies (5) are respectively located in the openings on both sides of the valve body (1) and located on both sides of the ball (2); The valve body (1) has connecting pipes (3) on the outer sides of the openings on both sides. The two connecting pipes (3) are provided with fixing rings (302) on the outer sides of one end close to each other. The fixing rings (302) are provided with fixing rods (4).

2. The detachable valve seat structure of the ball valve according to claim 1, characterized in that, The connecting pipe (3) has a slot (303) on one end face near the fixing ring (302), and a sealing gasket (6) is provided inside the slot (303).

3. The detachable valve seat structure of the ball valve according to claim 2, characterized in that, One end of the valve seat body (5) is inserted into the slot (303) and contacts the sealing gasket (6). The other end of the valve seat body (5) away from the sealing gasket (6) extends into the valve body (1) through the opening and contacts the surface of the ball (2).

4. The detachable valve seat structure of the ball valve according to claim 1, characterized in that, The valve seat body (5) has an annular mounting groove (501) on its outer surface, and a sealing ring (7) is provided inside the annular mounting groove (501).

5. The detachable valve seat structure of the ball valve according to claim 1, characterized in that, The outer side of the fixing ring (302) has a number of lugs (304) arranged in a circular array, and the lugs (304) are provided with perforations (305).

6. The detachable valve seat structure of the ball valve according to claim 5, characterized in that, One end of the fixed connecting rod (4) is provided with a limiting plate, and the outer surface of the fixed connecting rod (4) away from the limiting plate is provided with an external thread (401).

7. The detachable valve seat structure of the ball valve according to claim 6, characterized in that, The fixed connecting rod (4) passes through the through hole (305) at the end away from the limiting plate and is threaded with a fastening nut (402) through the external thread (401).

8. The detachable valve seat structure of the ball valve according to claim 1, characterized in that, A connecting flange (301) is provided at the end of the connecting pipe (3) away from the fixing ring (302).

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