Ball valve with high sealing performance

Abstract

The high-sealing-performance ball valve comprises a valve body, a water inlet is formed in one end of the valve body, a water outlet is formed in the other end of the valve body, a ball body is arranged in the center of the interior of the valve body, a valve rod is arranged at the top of the ball body, the other end of the valve rod penetrates through the top of the valve body, and a handle is arranged at the other end of the valve rod. A first wear-resisting plate is arranged at the bottom of the ball body, a second wear-resisting plate is arranged at the position, making contact with the ball body, of the bottom of the interior of the valve body, and the connecting portion of the first wear-resisting plate and the second wear-resisting plate is sealed through a sealing ring. In the rotating process of the ball body, the first wear-resisting plate at the bottom rubs the second wear-resisting plate, the first wear-resisting plate and the second wear-resisting plate have extremely high wear resistance, and the situation that due to long-time use, the connecting position of the ball body and the valve body is abraded, and then the sealing performance is reduced can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a ball valve with high sealing performance. Background Art

[0002] A ball valve is a valve in which the closing member is driven by a valve stem and rotates around the axis of the ball valve. It can also be used for the regulation and control of fluids. A multi-way ball valve can not only flexibly control the confluence, divergence, and flow direction switching of the medium on the pipeline, but also close any channel to connect the other two channels.

[0003] During the use of a ball valve, the opening and closing state of the valve core is controlled by rotating the valve stem to achieve the conduction and sealing of the ball valve. At the same time, there are two sealing rings on the left and right of the valve body, and the high sealing performance design of the ball valve is realized through the contact deformation between the sealing ring and the valve core.

[0004] However, during the use of the ball valve of the prior art, there will be a certain friction between the sphere at the bottom of the valve stem and the valve body during use. During long-term use, the bottom of the sphere will be worn to a certain extent, resulting in less than ideal sealing performance at this place. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a ball valve with high sealing performance to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A ball valve with high sealing performance, including a valve body. A sphere is arranged at the center of the interior of the valve body. A valve stem is arranged at the top of the sphere. The other end of the valve stem passes through the top of the valve body. A handle is arranged at the other end of the valve stem. A second wear-resistant plate is arranged at the center of the bottom of the interior of the valve body and in contact with the bottom of the sphere. A first wear-resistant plate is arranged at the bottom surface of the sphere. The bottom of the first wear-resistant plate is in contact with the top of the second wear-resistant plate. The radian of the first wear-resistant plate matches the radian of the contact part between the bottom of the interior of the valve body and the sphere. The radian of the second wear-resistant plate is greater than the radian of the contact part between the bottom of the interior of the valve body and the sphere.

[0008] Preferably, an anti-slip block is arranged at the other end of the handle.

[0009] Preferably, an extended area is arranged at the bottom of the first wear-resistant plate and at the periphery of the contact part between the bottom of the interior of the valve body and the sphere.

[0010] Preferably, the extended area of the first wear-resistant plate is in contact with the top of the second wear-resistant plate. A sealing groove is arranged at the contact part between the first wear-resistant plate and the second wear-resistant plate. A sealing ring is arranged inside the sealing groove.

[0011] Preferably, one end of the valve body is provided with a water inlet, and the other end of the valve body is provided with a water outlet.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For a high-sealing ball valve of the present utility model, a first wear-resistant plate is provided at the bottom of the ball, and a second wear-resistant plate is provided at the bottom inside the valve body and in contact with the ball. The connection part between the first wear-resistant plate and the second wear-resistant plate is sealed by a sealing ring. When the valve stem is rotated by the handle, the ball will rotate. During the rotation of the ball, the first wear-resistant plate at the bottom will rub against the second wear-resistant plate. The first wear-resistant plate and the second wear-resistant plate have extremely strong wear resistance, which can prevent the connection between the ball and the valve body from being worn due to long-term use, thereby reducing the sealing performance.

[0014] 2. For a high-sealing ball valve of the present utility model, a sealing ring is provided at the connection between the first wear-resistant plate and the second wear-resistant plate. The setting of the sealing ring can improve the sealing performance between the first wear-resistant plate and the second wear-resistant plate, and prevent the fluid from flowing out through the gap between the first wear-resistant plate and the second wear-resistant plate during use, resulting in an unsatisfactory sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the overall longitudinal sectional structure of the present utility model;

[0017] Figure 3 is Figure 2 the enlarged view at A in

[0018] Figure 4 is Figure 3 the enlarged view at B in

[0019] In the figure: 1. Valve body; 2. Water inlet; 3. Water outlet; 4. Handle; 5. Anti-slip block; 6. Valve stem; 7. Ball; 8. First wear-resistant plate; 9. Second wear-resistant plate; 10. Sealing groove; 11. Sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0022] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0024] A ball valve with high sealing performance, including a valve body 1. A sphere 7 is arranged at the center of the interior of the valve body 1. A valve stem 6 is arranged at the top of the sphere 7. The other end of the valve stem 6 passes through the top of the valve body 1. A handle 4 is arranged at the other end of the valve stem 6. A second wear-resistant plate 9 is arranged at the center of the bottom of the interior of the valve body 1 and in contact with the bottom of the sphere 7. A first wear-resistant plate 8 is arranged at the bottom surface of the sphere 7. The bottom of the first wear-resistant plate 8 is in contact with the top of the second wear-resistant plate 9. The radian of the first wear-resistant plate 8 matches the radian of the contact part between the bottom of the interior of the valve body 1 and the sphere 7. The radian of the second wear-resistant plate 9 is greater than the radian of the contact part between the bottom of the interior of the valve body 1 and the sphere 7.

[0025] Further, an anti-slip block 5 is arranged at the other end of the handle 4.

[0026] Further, an extended area is arranged at the bottom of the first wear-resistant plate 8 and outside the contact part between the bottom of the interior of the valve body 1 and the sphere 7.

[0027] Further, the extended area of the first wear-resistant plate 8 is in contact with the top of the second wear-resistant plate 9. A sealing groove 10 is formed at the contact part between the first wear-resistant plate 8 and the second wear-resistant plate 9. A sealing ring 11 is arranged inside the sealing groove 10.

[0028] Specifically, a sealing ring 11 is arranged at the connection between the first wear-resistant plate 8 and the second wear-resistant plate 9. The arrangement of the sealing ring 11 can improve the sealing performance between the first wear-resistant plate 8 and the second wear-resistant plate 9, and prevent the fluid from flowing out through the gap between the first wear-resistant plate 8 and the second wear-resistant plate 9 during use, resulting in unsatisfactory sealing performance.

[0029] Furthermore, a water inlet 2 is provided at one end of the valve body 1, and a water outlet 3 is provided at the other end of the valve body 1.

[0030] Working principle: For a high-sealing ball valve of the present utility model, a first wear-resistant plate 8 is provided at the bottom of the ball 7, and a second wear-resistant plate 9 is provided at the bottom inside the valve body 1 and in contact with the ball. The connection part between the first wear-resistant plate 8 and the second wear-resistant plate 9 is sealed by a sealing ring 11. When the valve stem 1 is rotated by the handle, the ball 7 will be rotated. During the rotation of the ball 7, the first wear-resistant plate 8 at the bottom will rub against the second wear-resistant plate 9. The first wear-resistant plate 8 and the second wear-resistant plate 9 have extremely strong wear resistance, which can prevent the connection between the ball 7 and the valve body 1 from being worn due to long-term use, thereby reducing the sealing performance.

[0031] It should be noted that the first wear-resistant plate 8 and the second wear-resistant plate 9 are wear-resistant steel plates in the prior art. The connection between the first wear-resistant plate 8 and the ball 7 is connected by waterproof glue, and the connection between the second wear-resistant plate 9 and the valve body 1 is also connected by waterproof glue. The connection between the first wear-resistant plate 8 and the extended area of the first wear-resistant plate 8 is connected by welding.

[0032] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A ball valve with high sealing performance, comprising a valve body (1), characterized in that: A sphere (7) is arranged at the inner center of the valve body (1), a valve stem (6) is arranged on the top of the sphere (7), the other end of the valve stem (6) passes through the top of the valve body (1), and a handle (4) is arranged on the other end of the valve stem (6). A second wear-resistant plate (9) is arranged at the inner bottom center of the valve body (1) and in contact with the bottom of the sphere (7), and a first wear-resistant plate (8) is arranged at the surface bottom of the sphere (7), the bottom of the first wear-resistant plate (8) is in contact with the top of the second wear-resistant plate (9), the curvature of the first wear-resistant plate (8) matches the curvature of the inner bottom of the valve body (1) in contact with the sphere (7), and the curvature of the second wear-resistant plate (9) is greater than the curvature of the inner bottom of the valve body (1) in contact with the sphere (7).

2. A high sealing ball valve according to claim 1, characterized in that: The other end of the handle (4) is provided with an anti-sliding block (5).

3. A ball valve with high sealing performance according to claim 1, characterized in that: An extended area is arranged at the bottom of the first wear-resistant plate (8) and at the periphery of the contact point between the inner bottom of the valve body (1) and the ball (7).

4. A ball valve with high sealing performance according to claim 3, characterized in that: The extended area of ​​the first wear-resistant plate (8) contacts the top of the second wear-resistant plate (9), a sealing groove (10) is provided at the contact portion between the first wear-resistant plate (8) and the second wear-resistant plate (9), and a sealing ring (11) is provided inside the sealing groove (10).

5. A ball valve with high sealing performance according to claim 1, characterized in that: One end of the valve body (1) is provided with a water inlet (2), and the other end of the valve body (1) is provided with a water outlet (3).

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