An upper-mounted self-sealing ball valve

Abstract

The utility model discloses an upper-mounted self-sealing ball valve relates to the field of ball valve. The upper-mounted self-sealing ball valve includes ball valve unit and sealing unit, the sealing unit symmetrical setting is in the inside of ball valve unit, the sealing unit includes metal ring, wedge ring, moving ring and elastic component, the wedge ring sets up at one end of metal ring, the moving ring sets up at the other side of metal ring, the elastic component sets up between metal ring and moving ring, and it is used for extruding metal ring sliding. The upper-mounted self-sealing ball valve moves through moving sliding block and drives moving ring to move, and then drives metal ring and wedge ring to move, and again through the limiting bolt to the sliding block limit, makes the wedge ring with ball core and resists, under the action of elastic component, makes the wedge ring with ball core and resists tightly, has improved the sealing property of wedge ring and ball core, avoided the problem that wedge ring is easy to seep after wearing, reduced the replacement frequency of wedge ring, simplified the maintenance process.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically to a top-mounted self-sealing ball valve. Background Technology

[0002] Ball valves, as a commonly used fluid control device, are widely used in industries such as petroleum, chemical, power, and metallurgy due to their simple structure, rapid opening and closing, and good sealing performance. Traditional ball valves typically adopt a side-mounted structure, meaning the valve body is divided into left and right halves connected by bolts. However, this structure has some drawbacks in practical applications.

[0003] With the development of technology, top-mounted self-sealing ball valves have emerged in recent years. Their valve bodies adopt an integral structure, and the valve cover is installed from the top, which facilitates online maintenance.

[0004] The self-sealing structure of a top-entry self-sealing ball valve consists of a metal ring and a wedge ring. The wedge ring abuts against the ball core to ensure the valve body's sealing performance. However, in some top-entry self-sealing ball valves, during long-term use, the continuous reciprocating rotation of the ball core causes friction on the wedge ring, creating gaps between the wedge ring and the ball core. These gaps are prone to leakage, affecting the self-sealing effect of the ball valve. Consequently, the wedge ring needs to be replaced periodically, making operation more troublesome and impacting the ball valve's performance. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a top-mounted self-sealing ball valve, which solves the problem that in some top-mounted self-sealing ball valves, during long-term use, the continuous reciprocating rotation of the ball core causes friction on the wedge ring, resulting in gaps between the wedge ring and the ball core. These gaps are prone to leakage, affecting the self-sealing effect of the ball valve and necessitating periodic replacement of the wedge ring, making operation cumbersome.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A top-mounted self-sealing ball valve includes a ball valve unit and a sealing unit, wherein the sealing unit is symmetrically arranged inside the ball valve unit, and the sealing unit includes:

[0007] Metal ring;

[0008] A wedge-shaped ring, wherein the wedge-shaped ring is disposed at one end of a metal ring;

[0009] A movable ring, which is disposed on the other side of the metal ring;

[0010] An elastic component, disposed between a metal ring and a movable ring, is used to compress the metal ring to slide, thereby ensuring the sealing between the wedge ring and the ball valve unit.

[0011] Preferably, the ball valve unit includes:

[0012] Valve body, wherein the valve body is provided with a ball core;

[0013] Multiple connecting flanges are provided and symmetrically arranged on both sides of the valve body;

[0014] A valve cover, which is disposed on top of the valve body;

[0015] A leak-proof assembly, which is disposed above the valve cover and is used for sealing at the valve cover;

[0016] A switch dial, which is located above the valve cover, is used to control the opening and closing of the ball valve.

[0017] Preferably, the spherical core abuts against the wedge-shaped ring.

[0018] Preferably, the sealing unit further includes:

[0019] A collar, wherein the collar is disposed within the valve body;

[0020] A sliding block, one end of which is connected to a moving ring, is used to drive the moving ring to move;

[0021] A limiting bolt is provided on the other side of the sliding block and is used to limit the movement of the sliding block.

[0022] Preferably, the metal ring and the movable ring are slidably connected within the collar.

[0023] Preferably, the elastic component includes:

[0024] A spring, wherein the spring is disposed between a metal ring and a movable ring;

[0025] A sliding rod is inserted inside a spring. One end of the sliding rod is fixedly connected to a movable ring, and the other end is slidably connected inside a metal ring.

[0026] Preferably, the sliding block is slidably connected to the pipe wall of the connecting flange.

[0027] Preferably, a sealing gasket is provided inside the pipe wall at the connection between the sliding block and the moving ring to prevent leakage at the connection.

[0028] This utility model discloses a top-mounted self-sealing ball valve, which has the following beneficial effects:

[0029] This top-mounted self-sealing ball valve utilizes an elastic component and a moving ring on one side of the metal ring, and a sliding block and a limiting bolt on the other side of the moving ring. After the wedge ring wears down, the moving ring moves via the sliding block, which in turn moves the metal ring and the wedge ring. The limiting bolt then limits the sliding block, causing the wedge ring to abut against the ball core. The elastic component ensures a tight seal between the wedge ring and the ball core, improving the sealing performance and preventing leakage after wedge ring wear. This reduces the frequency of wedge ring replacement, simplifies maintenance, and guarantees the self-sealing effect of the ball valve. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of this utility model;

[0032] Figure 2 This is a schematic diagram of the ball valve unit structure of this utility model;

[0033] Figure 3 This is a schematic diagram of the sealing unit structure of this utility model;

[0034] Figure 4 This is a schematic cross-sectional view of the sealing unit of this utility model;

[0035] Figure 5 This is a partial structural diagram of the sealing unit of this utility model;

[0036] Figure 6 This is a partial cross-sectional schematic diagram of the sealing unit of this utility model.

[0037] In the diagram: 1. Ball valve unit; 11. Valve body; 12. Connecting flange; 13. Valve cover; 14. Leakage prevention component; 15. Switching disc; 2. Sealing unit; 21. Collar; 22. Metal ring; 23. Wedge ring; 24. Moving ring; 25. Elastic component; 26. Sliding block; 27. Limit bolt. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] This utility model discloses a top-mounted self-sealing ball valve.

[0040] Example 1

[0041] According to the appendix Figure 1-6 As shown, the device includes a ball valve unit 1 and a sealing unit 2. The sealing unit 2 is symmetrically arranged inside the ball valve unit 1, and the sealing unit 2 includes:

[0042] Metal ring 22;

[0043] Wedge-shaped ring 23, which is disposed at one end of metal ring 22;

[0044] A movable ring 24 is disposed on the other side of the metal ring 22;

[0045] The elastic component 25 is disposed between the metal ring 22 and the moving ring 24. It is used to compress the sliding of the metal ring 22 to ensure the sealing between the wedge ring 23 and the ball valve unit 1.

[0046] Furthermore, the ball valve unit 1 includes:

[0047] Valve body 11, the valve body 11 is provided with a ball core;

[0048] Multiple connecting flanges 12 are provided and symmetrically arranged on both sides of the valve body 11.

[0049] Valve cover 13, which is located on top of valve body 11;

[0050] Leakage prevention component 14 is disposed above valve cover 13 and is used for sealing at valve cover 13;

[0051] Switching disc 15 is located above valve cover 13 and is used to control the opening and closing of ball valve.

[0052] Furthermore, the spherical core abuts against the wedge-shaped ring 23.

[0053] Example 2

[0054] According to the appendix Figure 1-6 As shown, the device includes a ball valve unit 1 and a sealing unit 2. The sealing unit 2 is symmetrically arranged inside the ball valve unit 1, and the sealing unit 2 includes:

[0055] Metal ring 22;

[0056] Wedge-shaped ring 23, which is disposed at one end of metal ring 22;

[0057] A movable ring 24 is disposed on the other side of the metal ring 22;

[0058] The elastic component 25 is disposed between the metal ring 22 and the moving ring 24. It is used to compress the sliding of the metal ring 22 to ensure the sealing between the wedge ring 23 and the ball valve unit 1.

[0059] Specifically disclosed, sealing unit 2 also includes:

[0060] The collar 21 is disposed inside the valve body 11;

[0061] Sliding block 26, one end of which is connected to the moving ring 24, is used to drive the moving ring 24 to move;

[0062] Limiting bolt 27 is provided on the other side of sliding block 26 and is used to limit the sliding block 26.

[0063] Furthermore, the metal ring 22 and the movable ring 24 are slidably connected within the collar 21.

[0064] Furthermore, the resilient component 25 includes:

[0065] A spring is disposed between the metal ring 22 and the movable ring 24;

[0066] The slide rod is inserted into the spring. One end of the slide rod is fixedly connected to the moving ring 24, and the other end is slidably connected to the metal ring 22.

[0067] Furthermore, the sliding block 26 is slidably connected inside the pipe wall of the connecting flange 12. Moving the sliding block 26 drives the moving ring 24 to move, which in turn drives the metal ring 22 and the wedge ring 23 to move. The sliding block 26 is then limited by the limiting bolt 27, so that the wedge ring 23 abuts against the ball core. Under the action of the elastic component 25, the wedge ring 23 and the ball core are pressed tightly together, which improves the sealing performance between the wedge ring 23 and the ball core, avoids the problem of easy leakage after the wedge ring 23 wears out, reduces the number of times the wedge ring 23 needs to be replaced, simplifies the maintenance process, and ensures the self-sealing effect of the ball valve.

[0068] It should be emphasized that a sealing gasket is provided inside the pipe wall at the connection between the sliding block 26 and the moving ring 24 to prevent leakage at the connection.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An upper-mounted self-sealing ball valve comprising a ball valve unit (1) and a sealing unit (2) which is symmetrically arranged inside the ball valve unit (1), characterized in that, The sealing unit (2) comprises: a metal ring (22); a wedge-shaped ring (23) arranged at one end of the metal ring (22); a moving ring (24) arranged at the other side of the metal ring (22); an elastic assembly (25) arranged between the metal ring (22) and the moving ring (24) for extruding the metal ring (22) to slide to ensure the sealing of the wedge-shaped ring (23) and the ball valve unit (1).

2. A top entry self-sealing ball valve according to claim 1, wherein, The ball valve unit (1) comprises: a valve body (11) provided with a ball core; a plurality of connecting flanges (12) symmetrically arranged at both sides of the valve body (11); a valve cover (13) arranged at the top of the valve body (11); an anti-seepage assembly (14) arranged above the valve cover (13) for sealing at the valve cover (13); a switch turntable (15) arranged above the valve cover (13) for controlling the opening and closing of the ball valve.

3. A top entry self-sealing ball valve according to claim 2, wherein The ball core abuts against the wedge-shaped ring (23).

4. A top entry self-sealing ball valve according to claim 2, wherein The sealing unit (2) further comprises: a sleeve ring (21) arranged in the valve body (11); a sliding block (26) having one end connected with the moving ring (24) for driving the moving ring (24) to move; a limiting bolt (27) arranged at the other side of the sliding block (26) for limiting the sliding block (26).

5. A top entry self-sealing ball valve according to claim 4, wherein The metal ring (22) and the moving ring (24) are slidingly connected in the sleeve ring (21).

6. A top entry self-sealing ball valve according to claim 4 wherein, The elastic assembly (25) comprises: a spring arranged between the metal ring (22) and the moving ring (24); a slide rod inserted in the spring, one end of the slide rod being fixedly connected with the moving ring (24) and the other end being slidingly connected in the metal ring (22).

7. A top entry self-sealing ball valve according to claim 4 wherein, The sliding block (26) is slidingly connected in the pipe wall of the connecting flange (12).

8. A top entry self-sealing ball valve according to claim 7, wherein, A sealing gasket is arranged in the pipe wall at the connection between the sliding block (26) and the moving ring (24) for preventing leakage at the connection.

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