A one-piece seal ball valve

Abstract

This utility model discloses an integral sealing ball valve, relating to the field of ball valves. The integral sealing ball valve includes a valve body unit and a sealing unit disposed on the valve body unit. The valve body unit includes two spliced ​​valve bodies and a valve core, two of which are symmetrically arranged, forming a cavity between them. The valve core is rotatably mounted on the inner wall of the cavity. The sealing unit includes a sealing strip, a plugging ring, and a limiting ring. The sealing strip is inserted between the two spliced ​​valve bodies, and the plugging ring is embedded in the top of the two spliced ​​valve bodies, with the plugging ring tightly abutting against the top of the sealing strip. This integral sealing ball valve, based on the existing sealing strip between two spliced ​​valve bodies, adds a plugging ring above it, and the plugging ring tightly abuts against the top of the sealing strip, thus achieving a double sealing effect. Furthermore, the limiting ring is connected to the top of the spliced ​​valve body, facilitating the pushing of the plugging ring to compress the sealing strip, thereby controlling the pre-tightening force of the plugging ring and the sealing strip.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically an integral sealing ball valve. Background Technology

[0002] The main components of a ball valve, such as the valve body, ball, sealing structure, and actuator, and how they work together to control fluid flow. A ball valve controls the flow of fluid by rotating a ball.

[0003] Existing ball valves have the following sealing defects during long-term use:

[0004] Traditional integral valve bodies are prone to deformation during assembly due to limitations in casting processes, resulting in uneven sealing surfaces. The leakage rate increases significantly with pressure fluctuations. Static sealing relies on flange bolt pre-tightening, requiring frequent torque checks. Furthermore, pipeline vibration can easily cause the pre-tightening force to loosen, which in turn affects its sealing performance. Therefore, this application proposes an integral sealing ball valve. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an integral sealing ball valve, which solves the problems of traditional integral valve bodies, which are prone to deformation during assembly due to casting process limitations, resulting in uneven sealing surfaces, significantly increased leakage rates with pressure fluctuations, static sealing relying on flange bolt pre-tightening requiring frequent torque checks, and pipeline vibration easily causing pre-tightening force relaxation, thus affecting its sealing performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integral sealing ball valve, comprising a valve body unit and a sealing unit disposed on the valve body unit, wherein the valve body unit includes:

[0007] The valve body is spliced ​​together, with two spliced ​​valve bodies arranged symmetrically, and a cavity is formed between the two spliced ​​valve bodies;

[0008] The valve core is rotatably mounted on the inner wall of the cavity;

[0009] The sealing unit includes:

[0010] A sealing strip is inserted between two assembled valve bodies;

[0011] The plugging ring is embedded in the top of the two spliced ​​valve bodies, and the plugging ring is tightly abutted against the top of the sealing strip;

[0012] The limiting ring is rotatably positioned above the blocking ring and is connected to the top of the splicing valve body.

[0013] Preferably, a valve stem is mounted on the top of the valve core, and a handle is mounted on the top end of the valve stem.

[0014] Preferably, a locking block is installed at the top of the valve stem, and a locking groove is provided at the bottom of the handle, with the locking block fitting against the inner wall of the locking groove.

[0015] Preferably, a sealing groove is provided on the opposite side of each of the two spliced ​​valve bodies, and the sealing strip is in contact with the inner wall of the sealing groove.

[0016] Preferably, the top of both of the spliced ​​valve bodies is provided with an annular groove, and the plugging ring is in contact with the inner wall of the annular groove.

[0017] Preferably, an arc-shaped threaded ring is installed on the top of each of the two spliced ​​valve bodies, and the inner wall of the limiting ring is threadedly connected to the arc-shaped threaded ring.

[0018] Preferably, the sealing strip includes an arc-shaped rubber strip and a straight rubber strip, with the straight rubber strip positioned above the arc-shaped rubber strip.

[0019] This utility model discloses an integral sealing ball valve, which has the following beneficial effects: The integral sealing ball valve adds a plugging ring above the existing sealing strip between two spliced ​​valve bodies. At the same time, the plugging ring and the top of the sealing strip are tightly abutted, thereby achieving a double sealing effect. In addition, the limiting ring is connected to the top of the spliced ​​valve body, which facilitates pushing the plugging ring to squeeze the sealing strip, thereby realizing the control of the pre-tightening force of the plugging ring and the sealing strip. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0023] Figure 3 This is a cross-sectional view of the spliced ​​valve body of this utility model;

[0024] Figure 4 This is a schematic diagram of part of the structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the sealing strip of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the blocking ring and the limiting ring of this utility model.

[0027] In the diagram: 1. Valve body unit; 11. Spliced ​​valve body; 12. Valve stem; 13. Valve core; 14. Handle; 15. Sealing groove; 16. Annular groove; 17. Arc-shaped threaded ring; 2. Sealing unit; 21. Sealing strip; 211. Arc-shaped rubber strip; 212. Straight rubber strip; 22. Plug ring; 23. Limiting ring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] This application provides an integral sealing ball valve, which solves the problems of traditional integral valve bodies, which are prone to deformation during splicing and installation due to casting process limitations, resulting in uneven sealing surfaces, significantly increased leakage rate with pressure fluctuations, static sealing relying on flange bolt pre-tightening requiring frequent torque checks, and pipeline vibration easily causing pre-tightening force to loosen, thus affecting its sealing performance.

[0030] Based on the existing sealing strip 21 between the two splicing valve bodies 11, a plugging ring 22 is added above it. At the same time, the plugging ring 22 is tightly abutted against the top of the sealing strip 21, thereby achieving a double sealing effect. The limiting ring 23 is connected to the top of the splicing valve body 11, which facilitates pushing the plugging ring 22 to squeeze the sealing strip 21, thereby realizing the control of the pre-tightening force of the plugging ring 22 and the sealing strip 21.

[0031] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0032] Example 1

[0033] This utility model discloses an integral sealing ball valve.

[0034] According to the appendix Figure 1-6 As shown, the device includes a valve body unit 1 and a sealing unit 2 disposed on the valve body unit 1. The valve body unit 1 includes:

[0035] The valve body 11 is spliced ​​together, and two spliced ​​valve bodies 11 are symmetrically arranged, with a cavity formed between the two spliced ​​valve bodies 11.

[0036] Valve core 13, which is rotatably mounted on the inner wall of the cavity;

[0037] Sealing unit 2 includes:

[0038] A sealing strip 21 is inserted between two spliced ​​valve bodies 11;

[0039] A plugging ring 22 is embedded in the top of the two spliced ​​valve bodies 11, and the plugging ring 22 is tightly abutted against the top of the sealing strip 21;

[0040] The limiting ring 23 is rotatably positioned above the blocking ring 22, and the limiting ring 23 is connected to the top of the splicing valve body 11.

[0041] Based on the existing sealing strip 21 between the two splicing valve bodies 11, a plugging ring 22 is added above it. At the same time, the plugging ring 22 is tightly abutted against the top of the sealing strip 21, thereby achieving a double sealing effect. The limiting ring 23 is connected to the top of the splicing valve body 11, which facilitates pushing the plugging ring 22 to squeeze the sealing strip 21, thereby realizing the control of the pre-tightening force of the plugging ring 22 and the sealing strip 21.

[0042] Furthermore, a valve stem 12 is mounted on the top of the valve core 13, and a handle 14 is mounted on the top of the valve stem 12 extending outward.

[0043] During use, the valve stem 12 can be rotated using the handle 14, thereby controlling the valve core 13.

[0044] Furthermore, a locking block is installed at the top of the valve stem 12, and a locking groove is provided at the bottom of the handle 14, with the locking block fitting against the inner wall of the locking groove.

[0045] By using the set block and slot, when using the handle 14, the block and the inner wall of the slot are aligned, and the valve stem 12 can be driven by the handle 14.

[0046] Furthermore, a sealing groove 15 is provided on each of the two valve bodies 11 facing each other, and the sealing strip 21 is in contact with the inner wall of the sealing groove 15.

[0047] The sealing groove 15 is used to install the sealing strip 21, so that the sealing strip 21 can seal the spliced ​​valve body 11.

[0048] Furthermore, annular grooves 16 are provided on the top of both spliced ​​valve bodies 11, and the plugging ring 22 fits against the inner wall of the annular groove 16.

[0049] The annular groove 16 is used to install the plug ring 22, thereby enabling the plug ring 22 to seal the spliced ​​valve body 11.

[0050] Furthermore, both spliced ​​valve bodies 11 are fitted with arc-shaped threaded rings 17 on their tops, and the inner wall of the limiting ring 23 is threadedly connected to the arc-shaped threaded rings 17.

[0051] The inner wall of the limiting ring 23 is threaded to the arc-shaped threaded ring 17, so that when the limiting ring 23 is rotated, the blocking ring 22 below it can be pushed into the annular groove 16.

[0052] Example 2

[0053] This utility model discloses an integral sealing ball valve.

[0054] According to the appendix Figure 1-6 As shown, the device includes a valve body unit 1 and a sealing unit 2 disposed on the valve body unit 1. The valve body unit 1 includes:

[0055] The valve body 11 is spliced ​​together, and two spliced ​​valve bodies 11 are symmetrically arranged, with a cavity formed between the two spliced ​​valve bodies 11.

[0056] Valve core 13, which is rotatably mounted on the inner wall of the cavity;

[0057] Sealing unit 2 includes:

[0058] A sealing strip 21 is inserted between two spliced ​​valve bodies 11;

[0059] A plugging ring 22 is embedded in the top of the two spliced ​​valve bodies 11, and the plugging ring 22 is tightly abutted against the top of the sealing strip 21;

[0060] The limiting ring 23 is rotatably positioned above the blocking ring 22, and the limiting ring 23 is connected to the top of the splicing valve body 11.

[0061] Furthermore, the sealing strip 21 includes an arc-shaped rubber strip 211 and a straight rubber strip 212, with the straight rubber strip 212 positioned above the arc-shaped rubber strip 211.

[0062] The sealing strip 21 is composed of an arc-shaped rubber strip 211 and a straight rubber strip 212, which makes the sealing strip 21 more compatible with the two spliced ​​valve bodies 11, thereby achieving a better sealing effect on the two spliced ​​valve bodies 11.

[0063] 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 integral sealing ball valve, comprising a valve body unit (1) and a sealing unit (2) disposed on the valve body unit (1), characterized in that, The valve body unit (1) includes: The two spliced ​​valve bodies (11) are symmetrically arranged and a cavity is formed between the two spliced ​​valve bodies (11); The valve core (13) is rotatably mounted on the inner wall of the cavity; The sealing unit (2) includes: A sealing strip (21) is inserted between two spliced ​​valve bodies (11); A plug ring (22) is embedded in the top of the two spliced ​​valve bodies (11), and the plug ring (22) is tightly abutted against the top of the sealing strip (21); The limiting ring (23) is rotatably positioned above the blocking ring (22) and is connected to the top of the splicing valve body (11).

2. The integral sealing ball valve according to claim 1, characterized in that, A valve stem (12) is mounted on the top of the valve core (13), and a handle (14) is mounted on the top of the valve stem (12).

3. The integral sealing ball valve according to claim 2, characterized in that, The valve stem (12) has a locking block installed at the top, and the handle (14) has a locking groove at the bottom, with the locking block fitting against the inner wall of the locking groove.

4. The integral sealing ball valve according to claim 1, characterized in that, Both of the two spliced ​​valve bodies (11) have a sealing groove (15) on their opposite sides, and the sealing strip (21) is in contact with the inner wall of the sealing groove (15).

5. The integral sealing ball valve according to claim 1, characterized in that, The top of each of the two spliced ​​valve bodies (11) is provided with an annular groove (16), and the plug ring (22) is in contact with the inner wall of the annular groove (16).

6. The integral sealing ball valve according to claim 1, characterized in that, Both of the spliced ​​valve bodies (11) are fitted with arc-shaped threaded rings (17) on their tops, and the inner wall of the limiting ring (23) is threadedly connected to the arc-shaped threaded rings (17).

7. The integral sealing ball valve according to claim 1, characterized in that, The sealing strip (21) includes an arc-shaped rubber strip (211) and a straight rubber strip (212), with the straight rubber strip (212) positioned above the arc-shaped rubber strip (211).

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