Bidirectional hard sealing ball valve

Abstract

The utility model discloses a two-way hard sealing ball valve which comprises an outer valve body and a ball valve body rotationally arranged in the outer valve body through a valve rod, an outwards-protruding valve seat is arranged on the outer wall of the middle of the outer valve body, a limiting groove is formed in the inner wall of the outwards-protruding valve seat, an outwards-protruding valve body is arranged on the outer side of the middle of the ball valve body, and the outwards-protruding valve body is rotationally clamped to the inner wall of the limiting groove. A first channel is arranged in the ball valve body, a second channel communicated with the first channel is arranged in the outwards-protruding valve body, and a first through hole and a second through hole are formed in the outer side of the second channel of the outwards-protruding valve body. The outer side of the middle of the ball valve body is provided with the outwards-protruding valve body horizontally and slidably arranged in the limiting groove in the outwards-protruding valve seat, sliding guiding can be conducted when the ball valve body is rotationally adjusted through the outwards-protruding valve body and the limiting groove, the stability of horizontal rotating adjustment of the ball valve body is improved, and the stability of opening and closing of rotating adjustment of the ball valve body is improved conveniently.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically a bidirectional hard-seal ball valve. Background Technology

[0002] A ball valve is a valve in which the opening and closing element (the ball) is driven by the valve stem and rotates around the valve's axis. In pipelines, it is mainly used for shut-off, distribution, and changing the flow direction of media. It only requires a 90-degree rotation and a very small torque to achieve a tight seal. Therefore, ball valves are widely used in industries such as petroleum refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, power, municipal engineering, and steel, playing a crucial role in the national economy. A bidirectional hard-seal ball valve refers to a ball valve that can provide a hard seal in both directions.

[0003] A prior art application (application number 202320004343.X) discloses a bidirectional hard-seal ball valve, comprising a valve body, a flow channel, and a valve core for controlling the flow channel by rotation. The valve core includes a ball, and the valve body is provided with a metal sealing ring. The ball includes a first crown and a second crown for engaging with the metal sealing ring. The distance between the first crown and the second crown is adjustable so that the first crown and the second crown do not contact the metal sealing ring during rotation. This invention allows the ball to not contact the metal sealing ring during rotation, reducing wear. However, the stability of the ball valve body's horizontal rotation adjustment is poor, and the outer wall of the ball valve body has weak resistance to water flow impact. Utility Model Content

[0004] The purpose of this invention is to provide a bidirectional hard-seal ball valve to solve the problems of poor stability of horizontal rotation adjustment of the ball valve body and weak resistance of the outer wall of the ball valve body to water flow impact in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bidirectional hard-seal ball valve, comprising an outer valve body and a ball valve body rotatably disposed inside the outer valve body via a valve stem. The outer wall of the middle portion of the outer valve body is provided with a protruding valve seat, and the inner wall of the protruding valve seat is provided with a limiting groove. The outer side of the middle portion of the ball valve body is provided with a protruding valve body, which is rotatably engaged with the inner wall of the limiting groove. The ball valve body is provided with a first channel inside, and the protruding valve body is provided with a second channel communicating with the first channel inside. The outer side of the second channel of the protruding valve body is provided with a first through hole and a second through hole.

[0006] Furthermore, the outer valve body is provided with an inlet and an outlet at both ends, and a flange is provided at one end of both the inlet and outlet.

[0007] Furthermore, the inner wall of the outer valve body is provided with a first sealing gasket, and the inner wall of the limiting groove is provided with a second sealing gasket.

[0008] Furthermore, the limiting groove is configured as an annular groove, and the protruding valve body is configured as an annular component.

[0009] Furthermore, the convex valve body is fixedly welded to the middle part of the ball valve body, and the outer diameter of the convex valve body is larger than the outer diameter of the ball valve body.

[0010] Furthermore, the ball valve body is provided with a third through hole in the middle, and multiple sets of the third through hole are provided laterally or longitudinally.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model features an externally protruding valve seat on the outer wall of the middle part of the outer valve body, and an externally protruding valve body on the outer side of the middle part of the ball valve body that slides horizontally with the internal limiting groove of the externally protruding valve seat. The externally protruding valve body and the limiting groove can provide sliding guidance during the rotation adjustment of the ball valve body, which helps to improve the stability of the horizontal rotation adjustment of the ball valve body, facilitates the smoothness of the opening and closing of the ball valve body, and at the same time improves the ability of the outer wall of the ball valve body to resist water flow impact, thereby facilitating the extension of the service life of the ball valve body.

[0013] This invention features a first sealing gasket on the inner wall of the outer valve body and a second sealing gasket on the inner wall of the limiting groove. The first and second sealing gaskets can form a double-layer seal between the ball valve body and the outer valve body, which helps to improve the sealing effect between the ball valve body and the outer valve body.

[0014] Furthermore, the second channel of the protruding valve body of this utility model is provided with a first through hole and a second through hole on the outer side, and the water inlet angle of the second through hole and the first through hole are different, which can prevent the phenomenon of easy blockage of a single water inlet through hole. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

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

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

[0018] Figure 3 This is a longitudinal sectional view of the overall structure of this utility model.

[0019] In the diagram: 1. Outer valve body; 2. Outer convex valve seat; 3. Ball valve body; 4. Valve stem; 5. Inlet pipe; 6. Outlet pipe; 7. Limiting groove; 8. Second sealing gasket; 9. First sealing gasket; 10. Flange; 11. First channel; 12. Second channel; 13. Outer convex valve body; 14. Second through hole; 15. First through hole; 16. Third through hole. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1 , Figure 2 , Figure 3 In this embodiment of the utility model, a bidirectional hard-seal ball valve includes an outer valve body 1 and a ball valve body 3 rotatably disposed inside the outer valve body 1 via a valve stem 4. The outer valve body 1 has an inlet 5 and an outlet 6 at both ends, and both the inlet 5 and outlet 6 have flanges 10 at one end for easy connection. The outer wall of the middle portion of the outer valve body 1 has a protruding valve seat 2, and the inner wall of the protruding valve seat 2 has a limiting groove 7. The outer side of the middle portion of the ball valve body 3 has a protruding valve body 13, which is rotatably engaged with the inner wall of the limiting groove 7. The limiting groove 7 is provided with… The ball valve body 13 is formed into an annular groove and is fixedly welded to the middle of the outer part of the ball valve body 3. The outer diameter of the ball valve body 13 is larger than the outer diameter of the ball valve body 3. The ball valve body 3 has a first channel 11 inside, and the ball valve body 13 has a second channel 12 that communicates with the first channel 11 inside. The ball valve body 13 and the limiting groove 7 can slide and guide the ball valve body 3 when it is rotated and adjusted, which helps to improve the stability of the horizontal rotation adjustment of the ball valve body 3 and facilitates the smoothness of the opening and closing of the ball valve body 3.

[0022] like Figure 2 and Figure 3 As shown, in order to reduce the chance of blockage inside the valve body, a first through hole 15 and a second through hole 14 are provided on the outside of the second channel 12 of the protruding valve body 13. The water inlet angle of the second through hole 14 is different from that of the first through hole 15, which can prevent the phenomenon of easy blockage of a single water inlet through hole.

[0023] like Figure 1 and Figure 3As shown, in order to improve the sealing effect of the connection between the ball valve body 3 and the outer valve body 1, the inner wall of the outer valve body 1 is provided with a first sealing gasket 9, and the inner wall of the limiting groove 7 is provided with a second sealing gasket 8. The first sealing gasket 9 and the second sealing gasket 8 can form a double seal between the ball valve body 3 and the outer valve body 1, which is beneficial to improving the sealing effect between the ball valve body 3 and the outer valve body 1.

[0024] like Figure 2 As shown, a third through hole 16 is also provided in the middle of the ball valve body 3, and multiple sets of the third through hole 16 are provided in the horizontal or vertical direction, which reduces the weight of the ball valve body 3 and facilitates material saving.

[0025] The working principle and usage process of this utility model are as follows: In use, the outer valve seat 2 is provided on the outer wall of the middle part of the outer valve body 1, and the outer valve body 13 is provided on the outer side of the middle part of the ball valve body 3, which is horizontally slidably arranged with the limiting groove 7 inside the outer valve seat 2. The outer valve body 13 and the limiting groove 7 can slide and guide the ball valve body 3 during rotation adjustment, which helps to improve the stability of the horizontal rotation adjustment of the ball valve body 3, facilitates the smoothness of the opening and closing of the ball valve body 3, and at the same time improves the ability of the outer wall of the ball valve body 3 to resist water flow impact, thereby facilitating the extension of the service life of the ball valve body 3.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bidirectional hard-seal ball valve, comprising an outer valve body (1) and a ball valve body (3) rotatably disposed inside the outer valve body (1) via a valve stem (4), characterized in that: The outer valve body (1) has a convex valve seat (2) on its outer wall in the middle. The inner wall of the convex valve seat (2) has a limiting groove (7). The outer side of the ball valve body (3) has a convex valve body (13) on its outer side in the middle. The convex valve body (13) is rotated and snapped into the inner wall of the limiting groove (7). The ball valve body (3) has a first channel (11) inside. The convex valve body (13) has a second channel (12) inside that communicates with the first channel (11). The outer side of the second channel (12) of the convex valve body (13) has a first through hole (15) and a second through hole (14).

2. The bidirectional hard-seal ball valve according to claim 1, characterized in that: The outer valve body (1) is provided with an inlet (5) and an outlet (6) at both ends, and a flange (10) is provided at one end of both the inlet (5) and the outlet (6).

3. A bidirectional hard-seal ball valve according to claim 1, characterized in that: The inner wall of the outer valve body (1) is provided with a first sealing gasket (9), and the inner wall of the limiting groove (7) is provided with a second sealing gasket (8).

4. A bidirectional hard-seal ball valve according to claim 3, characterized in that: The limiting groove (7) is configured as an annular groove, and the convex valve body (13) is configured as an annular component.

5. A bidirectional hard-seal ball valve according to claim 4, characterized in that: The convex valve body (13) is fixedly welded to the middle of the ball valve body (3), and the outer diameter of the convex valve body (13) is greater than the outer diameter of the ball valve body (3).

6. A bidirectional hard-seal ball valve according to claim 1, characterized in that: The ball valve body (3) is also provided with a third through hole (16) in the middle, and the third through hole (16) is provided in multiple sets in the horizontal or vertical direction.

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