Double-sealing high-pressure ball valve leak-proof structure

Abstract

The utility model relates to valve manufacturing technical field especially relates to a double sealing surface high pressure ball valve leak protection structure. Its technical scheme includes the valve body and the inside sealing mechanism in the inner wall of valve body, the sealing mechanism includes the fixed mouth of setting in the both sides of valve body outer wall, and the inner wall of two fixed mouth all is provided with the elastic buffer structure, and the inner wall both sides of valve body all are fixedly connected with the inside sealing ring, the both sides of valve body outer wall all are provided with the outside sealing mechanism, the elastic buffer structure includes the fixed ring fixed in the inner wall of fixed mouth, and the inner wall fixed connection of two fixed rings has the elastic mouth. The utility model discloses double sealing surface high pressure ball valve leak protection structure, it has effectively prevented medium leakage, safeguards system safety to, and effectively absorbs the impact of high pressure medium and pipeline vibration energy, reduces the wear and tear and fatigue of sealing element, guarantees the sealing effect, and still can prolong the service life of ball valve's advantage.

Description

Technical Field

[0001] This utility model relates to the field of valve manufacturing technology, and in particular to a leak-proof structure for a double-sealing-surface high-pressure ball valve. Background Technology

[0002] In high-pressure fluid transport systems, ball valves are critical control components, and their sealing performance directly affects the safety and reliability of the system. Traditional high-pressure ball valve sealing structures suffer from poor sealing performance. Single-seal-face designs struggle to maintain a good seal under the impact of high-pressure, high-velocity media, easily leading to media leakage. This not only wastes resources but may also cause safety accidents. For example, leakage of flammable and explosive media can result in serious consequences such as fires and explosions. Furthermore, single-seal-face designs subject the seal to significant stress under the impact of high-pressure media and frequent opening and closing operations, accelerating seal wear and aging. Therefore, this application proposes a double-seal-face high-pressure ball valve anti-leakage structure. Utility Model Content

[0003] The purpose of this invention is to address the problem in the prior art where the sealing effect of a single sealing surface is poor, which easily leads to wear of the sealing components, and to propose a leak-proof structure for a high-pressure ball valve with a double sealing surface.

[0004] The technical solution of this utility model is: a double-sealing-surface high-pressure ball valve anti-leakage structure, including a valve body and an internal sealing mechanism located on the inner wall of the valve body. The sealing mechanism includes a fixing port opened on both sides of the outer wall of the valve body. The inner walls of the two fixing ports are provided with an elastic buffer structure, and an internal sealing ring is fixedly connected to both sides of the inner wall of the valve body.

[0005] External sealing mechanisms are provided on both sides of the outer wall of the valve body.

[0006] Optionally, the elastic buffer structure includes a fixing ring fixed to the inner wall of the fixing port, and the inner walls of the two fixing rings are fixedly connected to elastic ports, which are made of high-density rubber.

[0007] Optionally, an inner rubber ring is fixedly connected to the outer wall of the elastic opening at the end away from the fixing ring, and a connecting seat is fixedly connected to the outer wall of the inner rubber ring.

[0008] Optionally, the external sealing mechanism includes an external sealing ring fixed to the inner wall of the connecting seat on one side of the internal rubber ring. The inner wall of the external sealing ring is fixedly connected with multiple rubber sealing blocks at equal intervals. The multiple rubber sealing blocks are all located on the outer wall of the elastic port and are made of polyurethane rubber.

[0009] Optionally, the four corners of the outer walls of the two connecting seats are connected to the valve body via through rods, and the top of the valve body is rotatably connected to a connecting rod.

[0010] Optionally, a handle is fixedly connected to the top end of the connecting rod, and the handle is located at the top end of the valve body.

[0011] Optionally, a valve ball is fixedly connected to the bottom end of the connecting rod, the outer wall of the valve ball has a through-hole, and the valve ball is located between two internal sealing rings.

[0012] Compared with the prior art, this application includes at least one of the following beneficial technical effects: the double sealing surface design combines an internal sealing ring, an external sealing ring and a rubber sealing block to form a double sealing barrier, which significantly improves the sealing performance. Compared with the traditional single sealing surface ball valve, the leakage rate is significantly improved, effectively preventing media leakage and ensuring system safety. The elastic buffer structure can effectively absorb the impact force of high pressure media and pipeline vibration energy, reduce the wear and fatigue of the sealing components, and extend the service life of the ball valve while ensuring the sealing effect. Attached Figure Description

[0013] Figure 1 A three-dimensional structural diagram of a double-sealing-surface high-pressure ball valve anti-leakage structure;

[0014] Figure 2 A schematic diagram of the external sealing ring connection structure of a double-sealing-surface high-pressure ball valve anti-leakage structure;

[0015] Figure 3 This is a schematic diagram of the internal structure of a double-sealing-surface high-pressure ball valve anti-leakage structure.

[0016] Figure 4 This is a schematic diagram of the internal connection structure of a double-sealing-surface high-pressure ball valve with a leak-proof structure.

[0017] Reference numerals: 1. Valve body; 2. Connecting seat; 3. Through rod; 4. Handle; 5. Connecting rod; 6. External sealing ring; 7. Rubber sealing block; 8. Internal rubber ring; 9. Elastic port; 10. Fixing ring; 11. Fixing port; 12. Internal sealing ring; 13. Valve ball; 14. Through port. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0019] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1

[0025] like Figure 1 and Figure 3 As shown, the present invention proposes a double-sealing-surface high-pressure ball valve anti-leakage structure, including a valve body 1 and an internal sealing mechanism located on the inner wall of the valve body 1. The sealing mechanism includes a fixing port 11 opened on both sides of the outer wall of the valve body 1, and an internal sealing ring 12 is fixedly connected to both sides of the inner wall of the valve body 1. The internal sealing ring 12 fixedly connected to both sides of the inner wall of the valve body 1 is made of high-performance fluororubber material. The internal sealing ring 12 is tightly fitted with the internal components to form the first sealing barrier, effectively preventing the high-pressure medium from leaking from the gap between the valve body 1 and the valve ball 13.

[0026] And, as Figure 1 , Figure 2 and Figure 3 As shown, the inner walls of both fixed ports 11 are provided with elastic buffer structures. The elastic buffer structures include fixed rings 10 fixed to the inner walls of the fixed ports 11, and elastic ports 9 are fixedly connected to the inner walls of the two fixed rings 10. The two elastic ports 9 are made of high-density rubber. An inner rubber ring 8 is fixedly connected to the outer wall of the elastic port 9 away from the fixed rings 10. A connecting seat 2 is fixedly connected to the outer wall of the inner rubber ring 8. By setting the elastic buffer structure on the inner walls of the fixed ports 11 on both sides of the outer wall of the valve body 1, which consists of fixed rings 10, elastic ports 9 and inner rubber rings 8, the fixed rings 10 are made of metal and are fixed to the inner walls of the fixed ports 11 by welding or bolts to provide support for the elastic ports 9. The elastic ports 9 are made of high-density rubber and have good elasticity and flexibility. They can undergo elastic deformation under the impact of high-pressure media to absorb the impact force and reduce the direct effect of the media on the seal. The inner rubber rings 8 are fixed to the outer walls of the elastic ports 9 to further enhance the buffering effect and at the same time play a sealing role to prevent the media from leaking from the gap between the elastic ports 9 and the connecting seat 2.

[0027] In addition, such as Figures 1 to 4 As shown, external sealing mechanisms are provided on both sides of the outer wall of the valve body 1. Each external sealing mechanism includes an external sealing ring 6 fixed to the inner wall of the connecting seat 2 on one side of the internal rubber ring 8. Multiple rubber sealing blocks 7 are fixedly connected at equal intervals to the inner wall of the external sealing ring 6. These rubber sealing blocks 7 are all located on the outer wall of the elastic port 9 and are made of polyurethane rubber. The four corners of the outer walls of the two connecting seats 2 are connected to the valve body 1 via through rods 3. A connecting rod 5 is rotatably connected to the top of the valve body 1. The external sealing ring 6, located on the inner wall of the connecting seat 2 on one side of the internal rubber ring 8, is also made of fluororubber and can automatically adhere to the surface of the valve body 1 under medium pressure, enhancing the sealing effect. The multiple rubber sealing blocks 7, fixedly connected at equal intervals to the inner wall of the external sealing ring 6, are made of high-strength sealing rubber, possessing high hardness and wear resistance. The rubber sealing blocks 7 tightly wrap around the outer wall of the elastic port 9, working in conjunction with the internal sealing ring 12 and the elastic buffer structure to form a second sealing barrier, effectively preventing medium leakage and maintaining good sealing performance even under high pressure and high vibration conditions.

[0028] It should be added that, such as Figure 1 and Figure 3As shown, a handle 4 is fixedly connected to the top of the connecting rod 5, and the handle 4 is located at the top of the valve body 1. A valve ball 13 is fixedly connected to the bottom of the connecting rod 5. A through-hole 14 is opened on the outer wall of the valve ball 13, and the valve ball 13 is located between two internal sealing rings 12. Two connecting seats 2 are respectively located on both sides of the outer wall of the valve body 1 and connected to the valve body 1 through the through rod 3, so that the whole device is connected. The through rod 3 is made of high-strength alloy steel. One end is threaded to the connecting seat 2, and the other end passes through the valve body 1 and is fastened with a nut to ensure that the connecting seat 2 is firmly connected to the valve body 1, and at the same time provides a stable installation base for the external sealing mechanism.

[0029] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A leak-proof structure for a double-sealing high-pressure ball valve, comprising a valve body (1) and an internal sealing mechanism located on the inner wall of the valve body (1), characterized in that: The sealing mechanism includes fixed ports (11) on both sides of the outer wall of the valve body (1). The inner walls of the two fixed ports (11) are provided with elastic buffer structures, and the inner walls of the valve body (1) are fixedly connected with internal sealing rings (12). The elastic buffer structure includes fixed rings (10) fixed to the inner walls of the fixed ports (11). The inner walls of the two fixed rings (10) are fixedly connected with elastic ports (9). The outer wall of the elastic ports (9) away from the fixed rings (10) is fixedly connected with an internal rubber ring (8). The outer wall of the internal rubber ring (8) is fixedly connected with a connecting seat (2). Both sides of the outer wall of the valve body (1) are provided with external sealing mechanisms. The external sealing mechanism includes an external sealing ring (6) fixed to the inner wall of the connecting seat (2) on one side of the internal rubber ring (8). Multiple rubber sealing blocks (7) are fixedly connected to the inner wall of the external sealing ring (6) at equal intervals.

2. The anti-leakage structure for a double-sealing-surface high-pressure ball valve according to claim 1, characterized in that, The two elastic openings (9) are made of high-density rubber.

3. The anti-leakage structure for a double-sealing-surface high-pressure ball valve according to claim 1, characterized in that, Multiple rubber sealing blocks (7) are located on the outer wall of the elastic port (9).

4. The anti-leakage structure for a double-sealing-surface high-pressure ball valve according to claim 1, characterized in that, The plurality of the rubber sealing blocks (7) are made of polyurethane rubber.

5. The anti-leakage structure for a double-sealing-surface high-pressure ball valve according to claim 1, characterized in that, The four corners of the outer walls of the two connecting seats (2) are connected to the valve body (1) by through rods (3), and the top of the valve body (1) is rotatably connected to a connecting rod (5).

6. The anti-leakage structure for a double-sealing-surface high-pressure ball valve according to claim 5, characterized in that, The top end of the connecting rod (5) is fixedly connected to a handle (4), which is located at the top end of the valve body (1).

7. The anti-leakage structure for a double-sealing-surface high-pressure ball valve according to claim 5, characterized in that, The bottom end of the connecting rod (5) is fixedly connected to a valve ball (13), the outer wall of the valve ball (13) is provided with a through hole (14), and the valve ball (13) is located between two internal sealing rings (12).

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