Multi-sealing high-safety flange ball valve

Abstract

The utility model discloses a multi-sealing high-safety flange ball valve which comprises a ball valve body and a pipeline to be connected, a connecting flange is fixedly arranged on one side of the ball valve body, and a first sealing mechanism facilitating sealing is arranged on one side of the connecting flange. A second sealing mechanism facilitating auxiliary sealing is arranged between the pipeline to be connected and the ball valve body, the first sealing mechanism comprises a first groove body, a second groove body, a first sealing ring and a second sealing ring, and the first groove body is formed in one side of the connecting flange in a surrounding mode. The ball valve body and the pipeline to be connected are connected through the bolt, after connection, the first sealing ring and the second sealing ring are located between the installation points and are squeezed by the ball valve body and the pipeline to be connected, and therefore the first sealing ring and the second sealing ring are used for sealing the connection position. And by increasing the number of the sealing rings, the sealing reliability is guaranteed, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of valve equipment, in particular to a multi-sealing high-safety flange ball valve. Background Technique

[0002] A flange ball valve is a valve that controls the on-off of fluid by rotating a ball; its structure mainly consists of components such as a valve body, a valve stem, a valve core (ball), and a gasket; the ball rotates around the center line of the valve body to achieve the purpose of opening or closing the flow of the medium in the pipeline.

[0003] When installing a flange ball valve, it is connected to the pipeline to be connected through a flange, and the sealing is carried out through a rubber sealing ring between the flanges to ensure the sealing performance of the pipeline connection position. However, the sealing performance of the rubber sealing ring decreases during long-term use, and there is only one rubber sealing ring at the connection position for single sealing work. Once the sealing effect of the sealing rubber ring decreases, leakage will occur, which has a large potential safety hazard and is also likely to cause waste of resources. Therefore, there is an urgent need for a device to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a multi-sealing high-safety flange ball valve to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A multi-sealing high-safety flange ball valve, including a ball valve main body and a pipeline to be connected. A connecting flange is fixedly arranged on one side of the ball valve main body. A first sealing mechanism for convenient sealing is arranged on one side of the connecting flange. A second sealing mechanism for convenient auxiliary sealing is arranged between the pipeline to be connected and the ball valve main body. The first sealing mechanism includes a first groove, a second groove, a first sealing ring, and a second sealing ring. The first groove is circumferentially opened on one side of the connecting flange. The second groove is circumferentially opened on one side of the connecting flange. The first sealing ring is slidably arranged inside the first groove. The second sealing ring is slidably arranged inside the second groove. When in use, the ball valve main body and the pipeline to be connected are connected by bolts. After connection, at this time, the first sealing ring and the second sealing ring are at the position between the installation points and are squeezed by the ball valve main body and the pipeline to be connected. In this way, the connection is sealed by the first sealing ring and the second sealing ring, and by increasing the number of sealing rings, the reliability of the sealing is ensured, and the service life of the device is prolonged.

[0006] Preferably, the second sealing mechanism includes an arc-shaped block, a hollow rubber block, a fixing component, a one-way valve, and an injection pipe. The hollow rubber block is adhesively fixed on the inner side wall of the arc-shaped block. There are two arc-shaped blocks. The fixing component is arranged at the position between the arc-shaped blocks. The one-way valve is inlaid and fixed on the outer side of the arc-shaped block. The injection pipe is fixed on one side of the one-way valve.

[0007] Preferably, the fixing component includes an extension block and a fixing screw. The extension block is welded and fixed on the outer side of the arc-shaped block. There are two extension blocks, symmetrically fixed at the upper and lower positions of the arc-shaped block. The fixing screw passes through the center of the extension block. After the connection between the pipeline to be connected and the ball valve body is completed, the arc-shaped block is sleeved on the outer side of the connection point at this time, and then the fixing screw passes through the extension block, so that the arc-shaped block is fixed on the outer side of the connection point. Then, hydraulic oil is injected through the injection pipe, so that the hydraulic oil fills the inside of the hollow rubber block, causing the side of the hollow rubber block close to the ball valve body to expand until it closely adheres to the outer side of the connection point. Finally, the injection pipe is sealed by a sealing cover. In this way, further sealing work is carried out through the expanded hollow rubber block, and the reliability of the connection point is further ensured through multiple seals.

[0008] Preferably, an operating arm for conveniently opening and closing the ball valve body is installed at the top of the ball valve body.

[0009] Preferably, the outer diameter of the first groove body is smaller than the inner diameter of the second groove body.

[0010] Preferably, one side of the one-way valve is communicated with the inside of the hollow rubber block, and a sealing cover is sleeved on the outer side of the injection pipe through threads.

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

[0012] 1. When the present utility model is in use, the ball valve body and the pipeline to be connected are connected by bolts. After the connection, at this time, the first sealing ring and the second sealing ring are located between the installation points and are squeezed by the ball valve body and the pipeline to be connected. In this way, the connection point is sealed through the first sealing ring and the second sealing ring, and the reliability of the seal is ensured by increasing the number of sealing rings, extending the service life of the device;

[0013] 2. When the connection between the pipeline to be connected and the ball valve body is completed, the arc-shaped block is sleeved on the outer side of the connection point at this time, and then the fixing screw passes through the extension block, so that the arc-shaped block is fixed on the outer side of the connection point. Then, hydraulic oil is injected through the injection pipe, so that the hydraulic oil fills the inside of the hollow rubber block, causing the side of the hollow rubber block close to the ball valve body to expand until it closely adheres to the outer side of the connection point. Finally, the injection pipe is sealed by a sealing cover. In this way, further sealing work is carried out through the expanded hollow rubber block, and the reliability of the connection point is further ensured through multiple seals. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of a multi-seal high-safety flange ball valve of the present utility model;

[0015] Figure 2 is a first cross-sectional view of a multi-seal high-safety flange ball valve of the present utility model;

[0016] Figure 3 This is the second cross-sectional view of a multi-sealed high-security flange ball valve of the present utility model.

[0017] In the figure: 1, ball valve body; 2, operating arm; 3, connecting flange; 4, pipeline to be connected; 5, first groove; 6, second groove; 7, first sealing ring; 8, second sealing ring; 9, arc-shaped block; 10, hollow rubber block; 11, extension block; 12, fixing screw; 13, injection pipe; 14, check valve. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-3 , the present utility model provides a multi-sealed high-security flange ball valve, including a ball valve body 1 and a pipeline 4 to be connected. One side of the ball valve body 1 is fixed with a connecting flange 3 by bolts. There is a first sealing mechanism for convenient sealing on one side of the connecting flange 3. An operating arm 2 for conveniently opening and closing the ball valve body 1 is installed at the top of the ball valve body 1. There is a second sealing mechanism for convenient auxiliary sealing between the pipeline 4 to be connected and the ball valve body 1. The first sealing mechanism includes a first groove 5, a second groove 6, a first sealing ring 7 and a second sealing ring 8. The first groove 5 is circumferentially opened on one side of the connecting flange 3. The second groove 6 is circumferentially opened on one side of the connecting flange 3. The outer diameter of the first groove 5 is smaller than the inner diameter of the second groove 6. The first sealing ring 7 slides inside the first groove 5. The second sealing ring 8 slides inside the second groove 6. When in use, the ball valve body 1 and the pipeline 4 to be connected are connected by bolts. After connection, at this time, the first sealing ring 7 and the second sealing ring 8 are at the position between the installation points and are squeezed by the ball valve body 1 and the pipeline 4 to be connected. In this way, the connection part is sealed by the first sealing ring 7 and the second sealing ring 8, and by increasing the number of sealing rings, the reliability of the seal is ensured and the service life of the device is extended.

[0020] The second sealing mechanism includes an arc-shaped block 9, a hollow rubber block 10, a fixing component, a check valve 14 and an injection pipe 13. The hollow rubber block 10 is adhesively fixed to the inner side wall of the arc-shaped block 9. There are two arc-shaped blocks 9. The fixing component is at the position between the arc-shaped blocks 9. The check valve 14 is inlaid and fixed on the outer side of the arc-shaped block 9. The injection pipe 13 is fixed to one side of the check valve 14 through a connecting valve. One side of the check valve 14 is communicated with the inside of the hollow rubber block 10. A sealing cover is sleeved on the outer side of the injection pipe 13 through threads.

[0021] The fixing component includes an extension block 11 and a fixing screw 12. The extension block 11 is welded and fixed on the outer side of the arc-shaped block 9. There are two extension blocks 11, which are symmetrically fixed at the upper and lower sides of the arc-shaped block 9. The fixing screw 12 passes through the center of the extension block 11. After the connection between the pipeline 4 to be connected and the ball valve body 1 is completed, at this time, the arc-shaped block 9 is sleeved on the outer side of the connection point, and then the fixing screw 12 is passed through the extension block 11, so that the arc-shaped block 9 is fixed on the outer side of the connection point. After that, hydraulic oil is injected through the injection pipe 13, so that the hydraulic oil fills the inside of the hollow rubber block 10, causing the side of the hollow rubber block 10 close to the ball valve body 1 to expand until it tightly adheres to the outer side of the connection point. Finally, the injection pipe 13 is sealed with a sealing cover. In this way, further sealing work is carried out through the expanded hollow rubber block 10, and the reliability of the connection point is further ensured through multiple seals.

[0022] Working principle: When in use, the ball valve body 1 and the pipeline 4 to be connected are connected by bolts. After the connection, at this time, the first sealing ring 7 and the second sealing ring 8 are located between the installation points and are squeezed by the ball valve body 1 and the pipeline 4 to be connected. In this way, the connection point is sealed through the first sealing ring 7 and the second sealing ring 8, and by increasing the number of sealing rings, the reliability of the seal is ensured and the service life of the device is extended; after the connection between the pipeline 4 to be connected and the ball valve body 1 is completed, at this time, the arc-shaped block 9 is sleeved on the outer side of the connection point, and then the fixing screw 12 is passed through the extension block 11, so that the arc-shaped block 9 is fixed on the outer side of the connection point. After that, hydraulic oil is injected through the injection pipe 13, so that the hydraulic oil fills the inside of the hollow rubber block 10, causing the side of the hollow rubber block 10 close to the ball valve body 1 to expand until it tightly adheres to the outer side of the connection point. Finally, the injection pipe 13 is sealed with a sealing cover. In this way, further sealing work is carried out through the expanded hollow rubber block 10, and the reliability of the connection point is further ensured through multiple seals.

[0023] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-seal high-safety flange ball valve, comprising a ball valve body (1) and a pipe to be connected (4), characterized in that: A connecting flange (3) is fixedly arranged on one side of the ball valve body (1), and a first sealing mechanism for convenient sealing is arranged on one side of the connecting flange (3). A second sealing mechanism for convenient auxiliary sealing is arranged between the pipeline (4) to be connected and the ball valve body (1), and the first sealing mechanism comprises a first groove body (5), a second groove body (6), a first sealing ring (7) and a second sealing ring (8). The first groove body (5) is arranged around one side of the connecting flange (3), and the second groove body (6) is arranged around one side of the connecting flange (3). The first sealing ring (7) is slidably arranged inside the first groove body (5), and the second sealing ring (8) is slidably arranged inside the second groove body (6).

2. A multi-seal high-safety flange ball valve according to claim 1, characterized in that: The second sealing mechanism comprises an arc block (9), a hollow rubber block (10), a fixing assembly, a one-way valve (14) and an injection pipe (13); the hollow rubber block (10) is bonded and fixed to the inner wall of the arc block (9); two arc blocks (9) are provided; the fixing assembly is provided between the arc blocks (9); the one-way valve (14) is embedded and fixed on the outer side of the arc block (9); and the injection pipe (13) is fixed to one side of the one-way valve (14).

3. A multi-seal high-safety flange ball valve according to claim 2, characterized in that: The fixing assembly comprises an extension block (11) and a fixing screw (12); the extension block (11) is welded and fixed on the outside of the arc block (9); two extension blocks (11) are provided and are symmetrically fixed at the upper and lower sides of the arc block (9); and the fixing screw (12) passes through the center of the extension block (11).

4. A multi-seal high-safety flange ball valve according to claim 3, characterized in that: An operating arm (2) for conveniently opening and closing the ball valve body (1) is installed at the top end of the ball valve body (1).

5. The multi-seal high-safety flange ball valve according to claim 4, characterized in that: The outer diameter of the first tank body (5) is smaller than the inner diameter of the second tank body (6).

6. The multi-seal high-safety flange ball valve according to claim 5, characterized in that: One side of the one-way valve (14) is in communication with the interior of the hollow rubber block (10), and a sealing cover is provided on the outside of the injection pipe (13) via a threaded sleeve connection.

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