Ball valve with good sealing performance

Abstract

The utility model discloses a ball valve with good sealing performance, and relates to the technical field of ball valves, according to the ball valve with good sealing performance, a flange plate is connected with the ball valve, and an O-shaped ring is extruded by the flange plate, so that the O-shaped ring is tightly attached to the joint, and the sealing performance of flange plate connection is conveniently improved; the section of the sealing ring is designed to be of an L-shaped structure, so that the sealing ring is more attached to the connecting pipe opening, and the sealing ring is made of hydrogenated nitrile rubber and has high strength, oil resistance, abrasion resistance, heat resistance and aging resistance, so that the sealing performance of ball valve connection is further improved; the ball valve sealing structure has good heat resistance and cold resistance, does not degrade, deform or harden in a high-temperature environment, greatly reduces the influence of temperature on the sealing structure, and is matched with the wear-resistant pad wrapping the edge side of the sealing pad, so that the wear of the valve ball on the sealing pad is conveniently shared, and the service life of the ball valve sealing structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valve valves, and particularly relates to a ball valve valve with good sealing performance. Background Technique

[0002] A ball valve is a valve whose opening and closing part 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. Among them, the hard-sealed V-type ball valve has a strong shearing force between its V-type ball core and the metal valve seat welded with hard alloy, and is especially suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel to connect the other two channels. This type of valve should generally be installed horizontally in the pipeline.

[0003] For example, the publication number is CN212745141U. The utility model discloses a wear-resistant ball valve valve in the technical field of valves, including a valve body. Water inlets and water outlets are respectively arranged at both ends of the valve body. A plurality of mounting holes are arranged on the water inlets and water outlets. A valve cover is arranged on the valve body. A plurality of bolts are arranged on the valve cover. A channel is arranged in the cavity of the valve body. A ball valve body is arranged on the channel. A valve stem is arranged at the top of the ball valve body. One end of the valve stem is connected with a turntable through a bearing. A packing is arranged on the valve stem. A packing gland is arranged on the packing. A waterproof protection layer is arranged on the outer wall of the ball valve body. A sealing gasket is arranged on the outer wall of the ball valve body to prevent the ball valve from directly contacting water, causing corrosion and damage, increasing the airtightness of the ball valve, and improving the service life rate.

[0004] The existing sealing structure of the ball valve valve is easily affected by temperature. When it works in a high-temperature environment for a long time, it is easy to accelerate the aging of the components of the sealing structure, resulting in a decline in the sealing performance and affecting its service life. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a ball valve valve with good sealing performance to solve the problems that the existing sealing structure of the ball valve valve is easily affected by temperature, and when it works in a high-temperature environment for a long time, it is easy to accelerate the aging of the components of the sealing structure, resulting in a decline in the sealing performance and affecting its service life as mentioned in the above background technique.

[0006] To achieve the above object, the utility model is realized by the following technical solutions: A ball valve with good sealing performance, including a valve body, both left and right ends of the valve body are fixedly installed with flange plates, one end of the flange plate away from the valve body is provided with an installation groove, an O-ring is fixedly installed inside the installation groove, a valve cavity is arranged inside the valve body, connection ports are arranged at both left and right ends of the valve cavity inside the valve body, a clamping groove is arranged inside the connection port, a sealing ring is fixedly installed inside the clamping groove, a valve ball is rotatably connected inside the valve cavity, a wear-resistant pad is arranged between the valve cavity and the valve ball, a sealing pad is fixedly installed inside the wear-resistant pad, a valve rod is fixedly installed at the upper end of the valve ball, the upper end of the valve rod extends to the outside of the valve body and is fixedly installed with a rotating handle, a wear-resistant ring is fixedly installed at the side of the valve rod inside the valve body, an installation ring is fixedly installed at the side of the valve rod at the upper end of the valve body, a dust-proof plate is fixedly installed at the upper end of the installation ring, and an installation seat is arranged at the upper end of the dust-proof plate.

[0007] Preferably, installation holes are arranged at the side of the installation groove on the flange plate, and the installation holes are distributed in a circular array.

[0008] Preferably, the installation groove is designed in a circular structure, the sealing ring is made of hydrogenated nitrile rubber, and the cross-section of the sealing ring is designed in an L-shaped structure.

[0009] Preferably, the wear-resistant pad is fixedly connected to the valve cavity, and both the wear-resistant pad and the sealing pad are rotatably connected to the valve ball.

[0010] Preferably, the sealing pad is made of silicone rubber, and a ball cavity is arranged inside the valve ball.

[0011] Preferably, the valve rod is rotatably connected to the valve body, and the wear-resistant ring is rotatably connected to the valve rod.

[0012] Preferably, the upper end of the installation seat is fixedly connected to the rotating handle, and the dust-proof plate is slidably connected to the installation seat. Beneficial effects

[0013] The utility model provides a ball valve with good sealing performance. Compared with the prior art, the following beneficial effects are achieved:

[0014] 1. For this ball valve with good sealing performance, the ball valve is connected through the flange plate. By using the flange plate to squeeze the O-ring, the O-ring is closely attached to the connection part, which is convenient for improving the sealing performance of the flange plate connection. Combined with the cross-section of the sealing ring being designed in an L-shaped structure, the sealing ring fits better with the connection pipe orifice. Moreover, the sealing ring is made of hydrogenated nitrile rubber, which has high strength, oil resistance, wear resistance, heat resistance and aging resistance, and is beneficial to further improving the sealing performance of the ball valve connection.

[0015] 2. The ball valve with good sealing performance has a silicone rubber gasket, which has good heat resistance and cold resistance. It will not degenerate, deform or harden in high-temperature environments, greatly reducing the impact of temperature on the sealing structure. A wear-resistant pad is wrapped around the side of the gasket to facilitate sharing the wear of the valve ball on the gasket, which is beneficial to extending the service life of the sealing structure of the ball valve and enhancing the sealing performance. The dust-proof plate is slidably connected to the mounting seat, which is convenient for blocking dust and impurities without affecting the normal use of the handle, preventing dust and impurities from entering between the valve stem and the valve body and causing wear to them, which is beneficial to strengthening the protection of the sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a structural schematic diagram of the clamping groove of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the present utility model;

[0019] Figure 4 is a structural schematic diagram of the dust-proof plate of the present utility model.

[0020] In the figure: 1. Valve body; 2. Flange; 3. Installation groove; 4. O-ring; 5. Valve cavity; 6. Connection port; 7. Sealing ring; 8. Valve ball; 9. Gasket; 10. Valve stem; 11. Handle; 12. Wear-resistant ring; 13. Installation ring; 14. Dust-proof plate; 15. Mounting seat; 16. Mounting hole; 17. Ball cavity; 18. Clamping groove; 19. Wear-resistant pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] 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.

[0022] Please refer to Figures 1-4, the present utility model provides a technical solution: a ball valve with good sealing performance, including a valve body 1. Flange plates 2 are fixedly installed at both the left and right ends of the valve body 1. An installation groove 3 is opened at one end of the flange plate 2 away from the valve body 1. An O-ring 4 is fixedly installed inside the installation groove 3. A valve cavity 5 is arranged inside the valve body 1. Connection ports 6 are arranged at both the left and right ends of the valve body 1 inside the valve cavity 5. A clamping groove 18 is opened inside the connection port 6. A sealing ring 7 is fixedly installed inside the clamping groove 18. Installation holes 16 are opened on the flange plate 2 at the side of the installation groove 3. The installation holes 16 are distributed in a circular array. The installation groove 3 is designed in a circular structure. The sealing ring 7 is made of hydrogenated nitrile rubber. The cross-section of the sealing ring 7 is designed in an L-shaped structure. By connecting the ball valve through the flange plate 2 and using the flange plate 2 to squeeze the O-ring 4, the O-ring 4 is closely attached to the connection part, which is convenient for improving the sealing performance of the connection of the flange plate 2. With the cross-section of the sealing ring 7 designed in an L-shaped structure, the sealing ring 7 fits better with the connection pipe orifice. And the sealing ring 7 is made of hydrogenated nitrile rubber, which has high strength, oil resistance, wear resistance, heat resistance and aging resistance, and is beneficial to further improving the sealing performance of the connection of the ball valve;

[0023] A valve ball 8 is rotatably connected inside the valve cavity 5. A wear-resistant pad 19 is arranged between the valve cavity 5 and the valve ball 8. A sealing pad 9 is fixedly installed inside the wear-resistant pad 19. A valve rod 10 is fixedly installed at the upper end of the valve ball 8. The upper end of the valve rod 10 extends to the outside of the valve body 1 and is fixedly installed with a turning handle 11. A wear-resistant ring 12 is fixedly installed inside the valve body 1 at the side of the valve rod 10. The wear-resistant pad 19 is fixedly connected to the valve cavity 5. Both the wear-resistant pad 19 and the sealing pad 9 are rotatably connected to the valve ball 8. The sealing pad 9 is made of silicone rubber. A ball cavity 17 is opened inside the valve ball 8. The valve rod 10 is rotatably connected to the valve body 1. The wear-resistant ring 12 is rotatably connected to the valve rod 10. Since the sealing pad 9 is made of silicone rubber, it has good heat resistance and cold resistance, and will not degenerate, deform or harden in a high-temperature environment, greatly reducing the influence of temperature on the sealing structure. With the wear-resistant pad 19 wrapped around the side of the sealing pad 9, it is convenient to share the wear of the valve ball 8 on the sealing pad 9, which is beneficial to extending the service life of the sealing structure of the ball valve and enhancing the sealing performance;

[0024] An installation ring 13 is fixedly installed inside the valve body 1 at the side of the valve rod 10 at the upper end. A dust-proof plate 14 is fixedly installed at the upper end of the installation ring 13. An installation seat 15 is arranged at the upper end of the dust-proof plate 14. The upper end of the installation seat 15 is fixedly connected to the turning handle 11. The dust-proof plate 14 is slidably connected to the installation seat 15. By the sliding connection between the dust-proof plate 14 and the installation seat 15, it is convenient to block dust and impurities without affecting the normal use of the turning handle 11, and avoid dust and impurities from entering between the valve rod 10 and the valve body 1 and causing wear to them, which is beneficial to strengthening the protection of the sealing structure.

[0025] During operation, the ball valve is connected through the flange 2. The O-ring 4 is squeezed by the flange 2, making the O-ring 4 fit tightly with the connection, which is convenient for improving the sealing performance of the flange 2 connection. The cross-section of the sealing ring 7 is designed in an L-shaped structure, making the sealing ring 7 fit better with the connecting pipe opening. And the sealing ring 7 is made of hydrogenated nitrile rubber, which has high strength, oil resistance, wear resistance, heat resistance and aging resistance. The gasket 9 is made of silicone rubber, which has good heat resistance and cold resistance, and will not degenerate, deform or harden in a high-temperature environment, greatly reducing the influence of temperature on the sealing structure. The side of the gasket 9 is wrapped with a wear-resistant pad 19, which is convenient for sharing the wear of the valve ball 8 on the gasket 9 and enhancing the sealing performance. The dust-proof plate 14 is slidably connected to the mounting seat 15, which is convenient for blocking dust and impurities without affecting the normal use of the handle 11, and preventing dust and impurities from entering between the valve stem 10 and the valve body 1 and causing wear to them.

[0026] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A ball valve with good sealing performance, comprising a valve body (1), characterized in that: Flange plates (2) are fixedly installed at both the left and right ends of the valve body (1). An installation groove (3) is provided at one end of the flange plate (2) away from the valve body (1). An O-ring (4) is fixedly installed inside the installation groove (3). A valve cavity (5) is provided inside the valve body (1). Connection ports (6) are provided at both the left and right ends of the valve cavity (5) inside the valve body (1). A clamping groove (18) is provided inside the connection port (6). A sealing ring (7) is fixedly installed inside the clamping groove (18). A valve ball (8) is rotatably connected inside the valve cavity (5). A wear-resistant pad (19) is provided between the valve cavity (5) and the valve ball (8). A sealing pad (9) is fixedly installed inside the wear-resistant pad (19). A valve stem (10) is fixedly installed at the upper end of the valve ball (8). The upper end of the valve stem (10) extends to the outside of the valve body (1) and is fixedly installed with a rotating handle (11). A wear-resistant ring (12) is fixedly installed on the side of the valve stem (10) inside the valve body (1). An installation ring (13) is fixedly installed on the side of the valve stem (10) at the upper end of the valve body (1). A dust-proof plate (14) is fixedly installed at the upper end of the installation ring (13). An installation seat (15) is provided at the upper end of the dust-proof plate (14).

2. A ball valve with good sealing performance according to claim 1, characterized in that: Installation holes (16) are provided on the flange plate (2) on the side of the installation groove (3). The installation holes (16) are distributed in a circular array.

3. The ball valve according to claim 1, which has good sealing performance, is characterized in that: The installation groove (3) is designed in a circular structure. The sealing ring (7) is made of hydrogenated nitrile rubber, and the cross-section of the sealing ring (7) is designed in an L-shaped structure.

4. A ball valve with good sealing performance according to claim 1, characterized in that: The wear-resistant pad (19) is fixedly connected to the valve cavity (5). Both the wear-resistant pad (19) and the sealing pad (9) are rotatably connected to the valve ball (8).

5. A ball valve with good sealing performance according to claim 4, characterized in that: The sealing pad (9) is made of silicone rubber. A spherical cavity (17) is provided inside the valve ball (8).

6. A ball valve with good sealing performance according to claim 1, characterized in that: The valve stem (10) is rotatably connected to the valve body (1). The wear-resistant ring (12) is rotatably connected to the valve stem (10).

7. A ball valve with good sealing performance according to claim 1, characterized in that: The upper end of the installation seat (15) is fixedly connected to the rotating handle (11). The dust-proof plate (14) is slidably connected to the installation seat (15).

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