Valve seat structure of ball valve and ball valve

Abstract

The utility model relates to the technical field of valve seats of ball valves, in particular to a valve seat structure of a ball valve and the ball valve.The valve seat structure of the ball valve comprises a main valve body, two sets of shells are arranged on the outer side of the main valve body and connected with the main valve body through fixing bolts, and the valve seats are arranged at the two ends in the main valve body. The valve seat is connected with the valve main body through a plurality of groups of connecting assemblies; the connecting assembly is used for rapidly connecting the valve seat and the valve body, the connecting assembly is composed of a connecting block, moving blocks, a clamping block, a fixed block and a limiting block, the connecting block is located between the shell and the valve seat, and the two sets of moving blocks are slidably connected to the two ends, close to the shell and the valve seat, of the connecting block correspondingly; the two sets of clamping blocks are connected to the ends, away from the connecting blocks, of the moving blocks in a sliding mode, the two sets of fixing blocks are located in the shell and the valve seat respectively, and compared with an existing ball valve seat, the overall practicability of the ball valve seat can be improved through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valve seats, in particular to a ball valve seat structure and a ball valve. Background Art

[0002] The structure of the ball valve mainly includes the valve body, valve seat and ball. The valve seat is installed between the valve body and the ball. The valve seat plays the role of supporting and sealing the valve body and the ball. The valve seat seal in the valve seat is one of the main structures to maintain the seal in the ball valve, preventing the leakage of the medium in the pipeline to meet the needs of high environmental requirements.

[0003] There are various types of valve seat structures for fixed ball valves, which generally include valve seat seals, valve seat support rings and elastic components. Most existing valve seats are made by pressing the valve seat seal against the ball to achieve the seal between the valve seat and the ball, and an O-ring is set on the valve seat support ring to achieve the seal between the valve seat and the valve body. However, in order to reduce the overall torque, the thickness of the valve seat is thinned during processing of the existing fixed ball valve, while the length of the valve seat is generally unchanged, which causes the valve seat to be slightly deformed when it is used by external forces. For example, when the valve seat is subjected to the force transmitted by the ball and the valve body, the valve seat is slightly deformed, which will cause the valve seat support ring and the valve seat seal to be displaced. The valve seat seal is very likely to be out of center with the ball and cannot achieve complete sealing. Therefore, it is particularly important to improve the existing ball valve seat, design a new ball valve seat structure and ball valve to solve the above technical defects and improve the practicality of the overall ball valve seat. Utility Model Content

[0004] The purpose of the utility model is to provide a valve seat structure of a ball valve and a ball valve, which can facilitate the installation of the valve seat through the design of a connecting component, and at the same time, through the displacement of a moving block, can drive the fixed block to move, so that the valve seat can be displaced and fit the surface of the ball valve body, thereby making the sealing effect of the ball valve body better, improving the overall practicality of the ball valve seat, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A valve seat structure of a ball valve, comprising a valve body, two sets of outer shells are arranged on the outside of the valve body, the outer shells are connected to the valve body through fixing bolts, valve seats are arranged at both ends of the valve body, and the valve seats are connected to the valve body through multiple sets of connecting components;

[0007] The connecting assembly is used for the quick connection between the valve seat and the valve body.

[0008] As a preferred solution of the utility model, the connecting assembly consists of a connecting block, a movable block, a clamping block, a fixed block, and a limit block. The connecting block is located between the outer shell and the valve seat, and the two groups of movable blocks are respectively slidably connected to the two ends of the connecting block close to the outer shell and the valve seat, and the two groups of clamping blocks are both slidably connected to the end of the movable block away from the connecting block. The two groups of fixed blocks are respectively located inside the outer shell and the valve seat, and the two groups of limit blocks are both slidably connected to the inside of the fixed block.

[0009] As a preferred solution of the utility model, a receiving groove is provided inside the connecting block, the internal structure size of the receiving groove is designed to correspond to the external structure size of the moving block, and a first compression spring is provided inside the receiving groove, and the moving block is connected to the first compression spring through the receiving groove.

[0010] As a preferred solution of the utility model, two groups of connecting grooves are opened at one end of the movable block close to the clamping block, the internal structure size of the connecting groove is designed to correspond to the external structure size of the clamping block, and a second compression spring is provided inside the clamping block extending into the connecting groove.

[0011] As a preferred solution of the utility model, the internal structure size of the fixed block is designed to be corresponding to the external structure size of the moving block, and the moving block is connected to the fixed block via a clamping block.

[0012] As a preferred solution of the utility model, the limiting block extends to the interior of the fixing block and is provided with a third compression spring, and the limiting block is connected to the clamping block via the third compression spring.

[0013] The utility model also provides a ball valve, comprising: a ball valve body, wherein the ball valve body is located inside a valve body, and the ball valve body is connected to the valve body through a valve seat.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a ball valve body is installed inside the valve body through the design of the connecting component, and then the connecting block is placed between the two groups of fixed blocks, and the moving block is displaced by the first compression spring, and the moving block is displaced to the inside of the fixed block, and the clamping block is displaced by the second compression spring, so that the clamping block is connected with the inside of the fixed block. When the clamping block is connected with the inside of the fixed block, the limiting block is displaced by the third compression spring, so that the limiting block can contact the clamping block, and the clamping block is limited and limited inside the fixed block, so that the moving block can be connected with the fixed block in a limited manner, and the outer shell is connected to the valve body, so that the valve seat can contact the ball valve body, and the design of the connecting component makes it convenient to install the valve seat, and at the same time, the displacement of the moving block can drive the fixed block to displace, so that the valve seat can be displaced and fit the surface of the ball valve body, so that the sealing effect of the ball valve body is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the valve body of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the connection component of the utility model.

[0019] In the figure: 1. valve body; 2. outer shell; 3. valve seat; 4. connecting assembly; 5. connecting block; 6. moving block; 7. clamping block; 8. fixing block; 9. limiting block; 10. accommodating groove; 11. first compression spring; 12. connecting groove; 13. second compression spring; 14. third compression spring; 15. ball valve body. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Example:

[0022] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0023] A valve seat structure of a ball valve comprises a valve body 1, two sets of shells 2 are arranged outside the valve body 1, the shells 2 are connected to the valve body 1 through fixing bolts, valve seats 3 are arranged at both ends inside the valve body 1, and the valve seats 3 are connected to the valve body 1 through multiple sets of connecting components 4;

[0024] The connecting assembly 4 is used for the quick connection between the valve seat 3 and the valve body 1 .

[0025] Furthermore, the connecting assembly 4 is composed of a connecting block 5, a movable block 6, a clamping block 7, a fixed block 8, and a limit block 9. The connecting block 5 is located between the outer shell 2 and the valve seat 3. The two groups of movable blocks 6 are respectively slidably connected to the two ends of the connecting block 5 close to the outer shell 2 and the valve seat 3. The two groups of clamping blocks 7 are both slidably connected to the end of the movable block 6 away from the connecting block 5. The two groups of fixed blocks 8 are respectively located inside the outer shell 2 and the valve seat 3. The two groups of limit blocks 9 are both slidably connected to the inside of the fixed block 8. When the valve seat 3 needs to be installed with the valve body 1, the valve seat 3 can be connected with the outer shell 2 through the connecting assembly 4, and then the outer shell 2 is connected with the valve body 1, so that the valve seat 3 can be connected with the valve body 1.

[0026] Among them, a receiving groove 10 is opened inside the connecting block 5, and the internal structure size of the receiving groove 10 is designed to correspond to the external structure size of the moving block 6, and a first compression spring 11 is provided inside the receiving groove 10. The moving block 6 is connected to the first compression spring 11 through the receiving groove 10, and the moving block 6 is slidably connected to the receiving groove 10. When the moving block 6 is displaced, it can be guided by the receiving groove 10 to prevent it from being offset. The moving block 6 can contact the first compression spring 11 through the receiving groove 10, and the moving block 6 can be driven to displace by the first compression spring 11.

[0027] Secondly, two groups of connecting grooves 12 are opened at one end of the moving block 6 close to the clamping block 7. The internal structure size of the connecting groove 12 is designed to correspond to the external structure size of the clamping block 7. The clamping block 7 extends to the inside of the connecting groove 12 and is provided with a second compression spring 13, which slides the clamping block 7 and the connecting groove 12. When the clamping block 7 is displaced, the connecting groove 12 can limit it to prevent it from being offset. The second compression spring 13 can drive the clamping block 7 to be displaced.

[0028] Furthermore, the internal structure size of the fixed block 8 is designed to correspond to the external structure size of the movable block 6. The movable block 6 is connected to the fixed block 8 through the clamping block 7. The movable block 6 is brought into contact with the fixed block 8, and the clamping block 7 is driven to move by the second compression spring 13, so that the clamping block 7 can be connected to the inside of the fixed block 8.

[0029] Furthermore, the limit block 9 extends to the interior of the fixed block 8 and is provided with a third compression spring 14, and the limit block 9 is connected to the clamping block 7 through the third compression spring 14. When the clamping block 7 is connected to the interior of the fixed block 8, the limit block 9 is driven to move by the third compression spring 14, so that the limit block 9 can contact the clamping block 7, limit the clamping block 7, and limit it inside the fixed block 8, so that the movable block 6 can be connected to the fixed block 8 for limiting.

[0030] The present utility model also provides a ball valve, including a valve seat structure of a ball valve provided in any of the above embodiments. Since it has all the technical features of the valve seat structure of a ball valve provided in any of the above embodiments, it has the same technical effect as the valve seat structure of the above ball valve, and also includes: a ball valve body 15, the ball valve body 15 is located inside the valve body 1, and the ball valve body 15 is connected to the valve body 1 through the valve seat 3, the ball valve body 15 is installed inside the valve body 1, and the ball valve body 15 can be installed through the valve seat 3.

[0031] In this embodiment, the implementation scenario is specifically as follows: in actual use, the ball valve body 15 is installed inside the valve body 1, and then the connecting block 5 is placed between the two groups of fixed blocks 8. The first compression spring 11 drives the moving block 6 to move, and the moving block 6 is moved to the inside of the fixed block 8. The second compression spring 13 drives the clamping block 7 to move, so that the clamping block 7 is connected to the inside of the fixed block 8. When the clamping block 7 is connected to the inside of the fixed block 8, the third compression spring 14 drives the limit block 9 to move, so that the limit block 9 can contact the clamping block 7, and the clamping block 7 is The limit is to limit it inside the fixed block 8, so that the movable block 6 can be connected with the fixed block 8 for limiting connection, and the shell 2 is connected with the valve body 1, so that the valve seat 3 can contact with the ball valve body 15. The design of the connecting component 4 makes it convenient to install the valve seat 3. At the same time, the displacement of the movable block 6 can drive the fixed block 8 to move, so that the valve seat 3 can be displaced and fit the surface of the ball valve body 15, so that the sealing effect of the ball valve body 15 is better. Compared with the existing ball valve seat, the utility model can improve the overall practicality of the ball valve seat through design.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve seat structure for a ball valve, comprising a valve body (1), characterized in that: Two sets of outer shells (2) are provided on the outside of the valve body (1), and the outer shells (2) are connected to the valve body (1) via fixing bolts. Both ends of the valve body (1) are provided with valve seats (3), and the valve seats (3) are connected to the valve body (1) via multiple sets of connecting components (4); The connection assembly (4) is used for the quick connection between the valve seat (3) and the valve body (1).

2. A valve seat structure for a ball valve according to claim 1, characterized in that: The connecting assembly (4) is composed of a connecting block (5), a moving block (6), a clamping block (7), a fixed block (8), and a limit block (9); the connecting block (5) is located between the outer shell (2) and the valve seat (3); the two groups of the moving blocks (6) are respectively slidably connected to the two ends of the connecting block (5) close to the outer shell (2) and the valve seat (3); the two groups of the clamping blocks (7) are both slidably connected to the end of the moving block (6) away from the connecting block (5); the two groups of the fixed blocks (8) are respectively located inside the outer shell (2) and the valve seat (3); and the two groups of the limit blocks (9) are both slidably connected to the inside of the fixed block (8).

3. A valve seat structure for a ball valve according to claim 2, characterized in that: The connection block (5) is provided with a receiving groove (10) inside, the internal structure size of the receiving groove (10) is designed to correspond to the external structure size of the moving block (6), and a first compression spring (11) is provided inside the receiving groove (10), and the moving block (6) is connected to the first compression spring (11) via the receiving groove (10).

4. The valve seat structure of a ball valve according to claim 2, characterized in that: Two groups of connection grooves (12) are provided at one end of the movable block (6) close to the clamping block (7); the internal structure size of the connection groove (12) is designed to correspond to the external structure size of the clamping block (7); and a second compression spring (13) is provided inside the clamping block (7) extending to the connection groove (12).

5. The valve seat structure of a ball valve according to claim 2, characterized in that: The internal structure size of the fixed block (8) is designed to correspond to the external structure size of the moving block (6), and the moving block (6) is connected to the fixed block (8) via a clamping block (7).

6. The valve seat structure of a ball valve according to claim 2, characterized in that: The limiting block (9) extends to the interior of the fixing block (8) and is provided with a third compression spring (14), and the limiting block (9) is connected to the clamping block (7) via the third compression spring (14).

7. A ball valve, characterized in that: A valve seat structure of a ball valve comprising any one of claims 1 to 6, further comprising: a ball valve body (15), wherein the ball valve body (15) is located inside the valve body (1), and the ball valve body (15) is connected to the valve body (1) via the valve seat (3).

Images