All-metal hard-seal fixed ball valve

Abstract

The utility model discloses a kind of all-metal hard sealing fixed ball valves, comprising: valve body, valve seat, valve stem and ball core, channel is provided in valve body for medium to pass, ball core is set in valve body and will channel be divided into import flow passage and export flow passage, valve seat is set in the inner wall of channel, and valve seat is contacted with ball core, valve stem inner end is drivingly connected with ball core, outer end extends valve body, adjusting device for adjusting tightness between valve seat and ball core is set on valve body, adjusting device includes operating part and movable part, operating part is set on valve body surface, and inner end of operating part is drivingly connected with movable part, movable part is abutted with the side of valve seat away from ball core, by this setting, by setting the adjusting device that can adjust the tightness between valve seat and ball core on valve body, so that valve seat is under certain abrasion, keep reasonable hard sealing strength by adjusting device and ball core, reduce the replacement of ball core and valve seat, improve efficiency and reduce cost.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to an all-metal hard-seal fixed ball valve. Background Technology

[0002] A ball valve is a ball valve in which the sealing surfaces (i.e., the valve seat sealing surface and the ball sealing surface) are paired with metal-to-metal materials. The structural forms of ball valves are divided into floating ball type and fixed ball type, and the connection forms are flange connection, welded connection and threaded connection.

[0003] In existing technologies, hard-seal ball valves employing metal hard seals maintain stable sealing quality during use. However, after thousands of opening and closing cycles, and under the influence of high-temperature, high-pressure water, steam, oil, coal, fibrous, viscous, corrosive, and particulate media, the metal hard seal surface inevitably experiences frictional wear. This leads to a gradual deterioration in the sealing effect, necessitating disassembly and replacement of the valve seat or ball core. This increases operating costs and disrupts production continuity, reducing efficiency. Summary of the Invention

[0004] To address the aforementioned problems, this application proposes an all-metal hard-seal fixed ball valve. By incorporating an adjusting device on the valve body to regulate the tightness between the valve seat and the ball core, the valve seat maintains a reasonable hard seal strength with the ball core even under certain wear conditions. This reduces the need for replacement of the ball core and valve seat, improves efficiency, and lowers costs. The all-metal hard-seal fixed ball valve is specifically implemented through the following technical solution:

[0005] A fully metal hard-seal fixed ball valve includes: a valve body, a valve seat, a valve stem, and a ball core. The valve body has a channel for media to pass through. The ball core is disposed within the valve body and divides the channel into an inlet flow channel and an outlet flow channel. The valve seat is disposed on the inner wall of the channel and contacts the ball core. The inner end of the valve stem is kinetically connected to the ball core, and its outer end extends out of the valve body. The valve body is provided with an adjusting device for adjusting the tightness between the valve seat and the ball core. The adjusting device includes an operating part and a movable part. The operating part is disposed on the surface of the valve body, and its inner end is kinetically connected to the movable part. The movable part abuts against the side of the valve seat away from the ball core.

[0006] In a further configuration, the operating part is configured as a threaded rod, and the valve body is provided with an adjustment hole. The threaded rod is rotatably threaded into the adjustment hole. The movable part is configured as a movable block, with the inner end of the movable block abutting against the valve seat and the outer end of the movable block connecting with the threaded rod. Through this configuration, the movable block can be pushed by the rotational displacement of the threaded rod within the adjustment hole, thereby achieving the tightening or loosening of the valve seat.

[0007] Furthermore, the threaded rod includes an end and a rod body. An adjusting cone is provided on the end. The movable block includes a contact head at the outer end and a clamping part at the inner end. The end of the threaded rod abuts against the contact head of the movable block, and through the adjusting cone, a squeezing displacement is formed on the movable block during the movement of the threaded rod. This configuration makes the movement direction of the threaded rod form a certain angle with the single direction of the movable block, reducing space waste and making the overall structure more compact.

[0008] Furthermore, the outer end of the threaded rod is provided with an integral nut and a separate locking nut. This feature facilitates the adjustment and locking of the position of the threaded rod within the adjustment hole, preventing loosening.

[0009] Furthermore, a sealing gasket is provided on the inner end of the movable part that contacts the valve seat. This feature improves the sealing performance between the movable block and the valve body. At the same time, the sealing gasket has a certain elasticity, which plays a certain buffering role, making the overall structure more stable.

[0010] Furthermore, an installation groove is provided on the inner wall of the internal channel of the valve body, and the valve seat is embedded in the installation groove. With this feature, the connection between the valve seat and the valve body is firm and compact, and the overall structure is more stable.

[0011] Furthermore, the opening of the adjustment hole faces the outside of the valve body, and the adjustment hole communicates with the mounting groove. This feature facilitates manual adjustment and contributes to a compact structure.

[0012] Furthermore, an annular groove is provided on the inner wall of the mounting groove, and an annular sealing ring is provided in the annular groove. This feature improves the sealing performance between the valve seat and the valve body, preventing leakage.

[0013] In summary, the all-metal hard-seal fixed ball valve, by incorporating an adjustment device on the valve body to regulate the tightness of the valve seat and the ball core, ensures that even with some wear, the valve seat maintains a reasonable hard seal strength with the ball core, reducing the need for replacement of the ball core and valve seat, improving efficiency, and lowering costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A front sectional view of an all-metal hard-seal fixed ball valve provided in an embodiment of this application;

[0016] Figure 2 The all-metal hard-seal fixed ball valve provided in the embodiments of this application Figure 1 Enlarged view of part A in the image.

[0017] The following are the labeling elements in the figure:

[0018] 1. Valve body; 2. Valve seat; 3. Valve stem; 4. Ball core; 5. Channel; 6. Inlet flow channel; 7. Outlet flow channel; 8. Adjusting device; 9. Operating part; 10. Moving part; 11. Threaded rod; 12. Adjusting hole; 13. Moving block; 14. End; 15. Rod body; 16. Adjusting cone; 17. Contact head; 18. Clamping part; 19. Integrated nut; 20. Locking nut; 21. Sealing gasket; 22. Mounting groove; 23. Annular groove; 24. Annular sealing ring. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] The appearance of the above terms in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0022] Please refer to the following: Figures 1 to 2A fully metal hard-seal fixed ball valve includes: a valve body 1, a valve seat 2, a valve stem 3, and a ball core 4. The valve body 1 has a channel 5 for medium to pass through. The ball core 4 is disposed in the valve body 1 and divides the channel 5 into an inlet flow channel 6 and an outlet flow channel 7. The valve seat 2 is disposed on the inner wall of the channel 5 and contacts the ball core. The inner end of the valve stem 3 is throttle-connected to the ball core 4, and the outer end extends out of the valve body 1. The valve body 1 is provided with an adjusting device 8 for adjusting the tightness between the valve seat 2 and the ball core 4. The adjusting device 8 includes an operating part 9 and a movable part 10. The operating part 9 is disposed on the surface of the valve body 1, and the inner end of the operating part 9 is throttle-connected to the movable part 10. The movable part 10 abuts against the side of the valve seat 2 away from the ball core 4.

[0023] Please see Figure 1 and Figure 2In this embodiment, the operating part 9 is configured as a threaded rod 11, and the valve body 1 is provided with an adjustment hole 12. The threaded rod 11 is rotatably threaded into the adjustment hole 12. The movable part 10 is configured as a movable block 13. The inner end of the movable block 13 abuts against the valve seat 2, and the outer end of the movable block 13 connects with the threaded rod 11. The threaded rod 11 includes an end 14 and a rod body 15. The end 14 is provided with an adjusting cone 16. The movable block 13 includes a contact head 17 at the outer end and a contact head 17 at the inner end. The clamping part 18, the end 14 of the threaded rod 11 abuts against the contact head 17 of the movable block 13, and through the adjusting cone 16, a squeezing displacement is formed on the movable block 13 during the movement of the threaded rod 11. It should be noted that in this embodiment, the transmission direction of the threaded rod 11 and the movable block 13 changes by 90°. The main advantage of this setting is that it is not necessary to open an excessively deep adjusting hole 12 on the valve body 1, but only at a thinner position on the valve body 1, and it can save space in the overall installation of the adjusting device 8. To reduce and integrate the components, and to achieve the aforementioned benefits, an adjusting cone 16 is provided at the end 14 of the threaded rod 11. When the threaded rod 11 moves along the extension direction of the adjusting hole 12, the adjusting cone 16 presses against the contact head 17 of the movable block 13. As the adjusting cone 16 moves with the threaded rod 11, the inclination of the contact area with the contact head 17 increases, gradually pushing the movable block 13 towards the valve seat 2, further adjusting the tightness of the contact between the valve seat 2 and the ball core 4. The outer end of the threaded rod 11 is also provided with an integral nut 19 and a separate locking nut 20; a sealing gasket 21 is provided on the inner end of the movable part 10 that contacts the valve seat 2; an installation groove 22 is provided on the inner wall of the internal channel 5 of the valve body 1, and the valve seat 2 is embedded in the installation groove 22; the opening of the adjusting hole 12 faces the outside of the valve body 1, and the adjusting hole 12 communicates with the installation groove 22; an annular groove 23 is provided on the inner wall of the installation groove 22, and an annular sealing ring 24 is provided in the annular groove 23.

[0024] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fully metal hard-seal fixed ball valve, comprising: The valve body (1), valve seat (2), valve stem (3), and ball core (4) are provided. The valve body (1) has a channel (5) for the medium to pass through. The ball core (4) is disposed in the valve body (1) and divides the channel (5) into an inlet flow channel (6) and an outlet flow channel (7). The valve seat (2) is disposed on the inner wall of the channel (5) and is in contact with the ball core (4). The inner end of the valve stem (3) is connected to the ball core (4) and the outer end extends outward. The valve body (1) is characterized in that: the valve body (1) is provided with an adjusting device (8) for adjusting the tightness between the valve seat (2) and the ball core (4). The adjusting device (8) includes an operating part (9) and a movable part (10). The operating part (9) is disposed on the surface of the valve body (1), and the inner end of the operating part (9) is connected to the movable part (10) in a transmission manner. The movable part (10) abuts against the side of the valve seat (2) away from the ball core (4).

2. The all-metal hard-seal fixed ball valve according to claim 1, characterized in that... The operating part (9) is configured as a threaded rod (11), and the valve body (1) is provided with an adjustment hole (12). The threaded rod (11) is rotatably threaded into the adjustment hole (12). The movable part (10) is configured as a movable block (13). The inner end of the movable block (13) abuts against the valve seat (2), and the outer end of the movable block (13) is connected to the threaded rod (11).

3. The all-metal hard-seal fixed ball valve according to claim 2, characterized in that... The threaded rod (11) includes an end (14) and a rod body (15). The end (14) is provided with an adjusting cone (16). The movable block (13) includes a contact head (17) at the outer end and a pressing part (18) at the inner end. The end (14) of the threaded rod (11) abuts against the contact head (17) of the movable block (13), and through the adjusting cone (16), a squeezing displacement is formed on the movable block (13) during the movement of the threaded rod (11).

4. The all-metal hard-seal fixed ball valve according to claim 2, characterized in that... The outer end of the threaded rod (11) is also provided with an integral nut (19) and a separate locking nut (20).

5. A fixed ball valve with an all-metal hard seal according to claim 1, characterized in that... A sealing gasket (21) is provided on the inner end of the movable part (10) that contacts the valve seat (2).

6. A fixed ball valve with an all-metal hard seal according to claim 2, characterized in that... The valve body (1) has an installation groove (22) on the inner wall of the internal channel (5), and the valve seat (2) is embedded in the installation groove (22).

7. A fixed ball valve with an all-metal hard seal according to claim 6, characterized in that... The opening of the adjustment hole (12) faces the outside of the valve body (1), and the adjustment hole (12) communicates with the mounting groove (22).

8. A fixed ball valve with an all-metal hard seal according to claim 6, characterized in that... An annular groove (23) is provided on the inner wall of the mounting groove (22), and an annular sealing ring (24) is provided in the annular groove (23).

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