Leak-proof gas ball valve

Abstract

The utility model relates to a leakproof gas ball valve which comprises a main gas valve pipe and an auxiliary valve pipe. According to the leakproof gas ball valve, the gas circulation leakproof mechanism is arranged, firstly, when the vent hole in the gas opening and closing circulation ball rotates to be parallel to the axis of the auxiliary valve pipe, gas can pass through the valve, and on the contrary, when the vent hole in the gas opening and closing circulation ball rotates to be perpendicular to the axis of the auxiliary valve pipe, the gas is cut off; by means of the design, the ball valve has the advantages of being fast in opening and closing, easy and convenient to operate and fast in response, gas cannot escape to the outside of a pipeline when fuel gas is in a circulating state by arranging the limiting closing plate and the circular closing piece, the fuel oil escape phenomenon is effectively avoided, practicability is high, and finally the circulating hole closing plate is arranged, so that the safety of the fuel gas is improved. And when fuel gas is in a cut-off state, the two ventilation holes in the ball body can be completely sealed by the two circulation hole sealing plates, so that the possibility of gas escape in the cut-off state is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas ball valve technology, specifically a leak-proof gas ball valve. Background Technology

[0002] A gas ball valve is a type of valve that opens and closes by rotating a ball. It is mainly used for the control of gas systems and features a simple structure, flexible operation, and good sealing performance. Gas ball valves achieve the opening and closing action of the valve through the rotation of the ball and are usually designed as on-off control valves. Gas ball valves are suitable for pipeline control and flow control of media such as gas and liquefied gas. They also have fireproof and anti-static functions to ensure system safety.

[0003] Currently, there are many types of gas ball valves available, but most still use a sealing gasket between the valve stem and the valve body. However, the sealing gasket has poor contact with the valve stem, which reduces the sealing performance between the valve stem and the valve body. Over time, this can easily lead to gas leakage, reducing the practicality of the ball valve. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a leak-proof gas ball valve with strong sealing performance, thus solving the problem of poor sealing.

[0005] To achieve the aforementioned strong sealing performance, this utility model provides the following technical solution: a leak-proof gas ball valve, comprising a main gas valve pipe and a secondary valve pipe, wherein secondary valve pipes are welded to both the left and right sides of the main gas valve pipe, a gas flow leak-proof mechanism is provided inside the main gas valve pipe, and a valve control assembly is provided above the main gas valve pipe;

[0006] The gas flow leak prevention mechanism includes two bearings and two limiting sealing plates. The main gas valve pipe has two bearings and two limiting sealing plates fixedly installed inside. The inner walls of the two bearings are fixedly connected to gas opening and closing flow balls. Two circular sealing plates connected to the limiting sealing plates are fixedly installed on the gas opening and closing flow balls. The inner walls of the front and rear sides of the main gas valve pipe are fixedly installed with flow hole sealing plates that are adapted to the outer walls of the gas opening and closing flow balls.

[0007] Furthermore, both of the limiting and sealing plates have circular grooves on their inner walls that are adapted to the circular sealing piece, and the inner wall of the circular groove is slidably connected to the outer wall of the circular sealing piece.

[0008] Furthermore, the upper and lower ends of the flow hole sealing plate are respectively connected to two limiting sealing plates, and the connection between the two is a fixed connection.

[0009] Furthermore, the gas flow ball is provided with a flow hole.

[0010] Furthermore, the valve control assembly includes a transmission rod and a limiting block. The transmission rod passes through the main air valve pipe and the interior of the upper bearing. A valve wrench is fixedly installed on the top of the transmission rod. A fan-shaped extension plate is fixedly installed on the outer wall of the transmission rod. Limiting blocks are fixedly installed on both the top of the main air valve pipe and on the left and right sides of the transmission rod.

[0011] Furthermore, one end of the transmission rod extending to the inner wall of the upper bearing is fixedly connected to the top of the gas flow ball.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] 1. This leak-proof gas ball valve features a gas flow leak-proof mechanism. Firstly, when the vent on the gas flow ball is rotated parallel to the axis of the auxiliary valve pipe, gas can pass through the valve. Conversely, when the vent on the gas flow ball is rotated perpendicular to the axis of the auxiliary valve pipe, the gas is cut off. This design gives the ball valve the characteristics of rapid opening and closing, making it easy to operate and responding quickly. Secondly, by setting a limit sealing plate and a circular sealing plate, gas will not escape to the outside of the pipeline during flow, effectively solving the problem of fuel escape and demonstrating strong practicality. Finally, by setting a flow hole sealing plate, when the gas is cut off, the two flow hole sealing plates completely seal both vents on the ball, further reducing the possibility of gas escape during the cut-off state.

[0014] 2. This leak-proof gas ball valve, through the setting of valve control components, firstly, when the valve wrench is rotated, the valve wrench will drive the transmission rod to rotate stably on the upper bearing. At the same time, the sector extension plate will also move along with it. Then, by setting two limit blocks, the rotation angle of the sector extension plate can be stably controlled within 90°. This design can effectively avoid the valve from being unable to seal properly due to excessive opening or closing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front sectional view of the structure of this utility model;

[0017] Figure 3 This is a partial cross-sectional view of the structure of this utility model;

[0018] Figure 4 This is a top sectional view of the structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the limiting sealing plate and the flow hole sealing plate of this utility model;

[0020] Figure 6 This is a schematic diagram of the gas flow ball for opening and closing in this utility model;

[0021] Figure 7 This is a schematic diagram of the transmission rod and the sector-shaped extension plate of this utility model.

[0022] In the diagram: 1. Main gas valve pipe; 2. Secondary valve pipe; 3. Gas flow leak prevention mechanism; 301. Bearing; 302. Limiting and sealing plate; 303. Gas opening and closing flow ball; 304. Circular sealing plate; 305. Flow hole sealing plate; 4. Valve control assembly; 401. Transmission rod; 402. Valve wrench; 403. Fan-shaped extension plate; 404. Limiting block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-7 In this embodiment, a leak-proof gas ball valve includes a main gas valve pipe 1 and a secondary valve pipe 2. The secondary valve pipe 2 is welded to both the left and right sides of the main gas valve pipe 1. A gas flow leak-proof mechanism 3 is provided inside the main gas valve pipe 1. A valve control component 4 is provided above the main gas valve pipe 1.

[0025] The gas flow leak prevention mechanism 3 includes two bearings 301 and two limiting and sealing plates 302. Two bearings 301 and two limiting and sealing plates 302 are fixedly installed inside the main gas valve pipe 1. Gas opening and closing flow balls 303 are fixedly connected to the inner walls of the two bearings 301. The gas opening and closing flow balls 303 have flow holes. Firstly, when the vent hole on the gas opening and closing flow ball 303 rotates to be parallel to the axis of the auxiliary valve pipe 2, gas can pass through the valve. Conversely, when the vent hole on the gas opening and closing flow ball 303 rotates to be perpendicular to the axis of the auxiliary valve pipe 2, the gas is cut off. This design gives the ball valve the characteristic of quick opening and closing, making operation simple and responsive. Two circular sealing plates 304 connected to the limiting and sealing plates 302 are fixedly installed on the gas opening and closing flow balls 303. The inner walls of both limiting and sealing plates 302 have flow holes that are perpendicular to the axis of the auxiliary valve pipe 2. A circular groove is adapted to the circular sealing plate 304, and the inner wall of the circular groove is slidably connected to the outer wall of the circular sealing plate 304. Then, by setting the limiting sealing plate 302 and the circular sealing plate 304, the gas will not escape to the outside of the pipeline when the gas is in the flow state. This design effectively solves the problem of fuel escape and has strong practicality. The inner walls of the front and rear sides of the main gas valve pipe 1 are fixedly installed with flow hole sealing plates 305 adapted to the outer wall of the gas opening and closing flow ball 303. The upper and lower ends of the flow hole sealing plate 305 are respectively connected to two limiting sealing plates 302, and the connection between the two is fixed. Finally, by setting the flow hole sealing plate 305, when the gas is cut off, the two flow hole sealing plates 305 will completely seal the two vent holes on the ball, further reducing the possibility of gas escape when the gas is cut off.

[0026] In the implementation of the case, the valve control component 4 includes a transmission rod 401 and a limiting block 404. The transmission rod 401 is inserted through the main air valve pipe 1 and the upper bearing 301. A valve wrench 402 is fixedly installed on the upper part of the transmission rod 401. A fan-shaped extension plate 403 is fixedly installed on the outer wall of the transmission rod 401. First, when the valve wrench 402 is rotated, the valve wrench 402 will drive the transmission rod 401 to rotate stably on the upper bearing 301. At the same time, the fan-shaped extension plate 403 will also move. Limiting blocks 404 are fixedly installed on the upper part of the main air valve pipe 1 and on both the left and right sides of the transmission rod 401. Then, by setting two limiting blocks 404, the rotation angle of the fan-shaped extension plate 403 can be stably controlled within 90°. This design can effectively avoid the valve from being unable to seal properly due to excessive opening or closing.

[0027] In the implementation of the case, the end of the transmission rod 401 that extends to the inner wall of the upper bearing 301 is fixedly connected to the top of the gas opening and closing flow ball 303. This design allows the valve control assembly 4 to drive the gas flow anti-leakage mechanism 3 to operate.

[0028] When implementing this procedure, please follow these steps:

[0029] 1) First, when the vent on the gas opening and closing flow ball 303 is rotated to be parallel to the axis of the auxiliary valve pipe 2, the gas can pass through the valve; conversely, when the vent on the gas opening and closing flow ball 303 is rotated to be perpendicular to the axis of the auxiliary valve pipe 2, the gas is cut off.

[0030] 2) Then, by setting the limiting sealing plate 302 and the circular sealing piece 304, the gas will not escape to the outside of the pipeline when the gas is in the flow state. This design effectively solves the problem of fuel escape.

[0031] 3) Finally, by setting the flow hole sealing plate 305, when the gas is cut off, the two flow hole sealing plates 305 will completely seal the two vent holes on the sphere, further reducing the possibility of gas escape in the cut-off state.

[0032] In summary, this leak-proof gas ball valve, through the gas flow leak-proof mechanism 3, allows gas to pass through when the vent on the gas opening / closing ball 303 rotates to be parallel to the axis of the secondary valve pipe 2. Conversely, when the vent on the gas opening / closing ball 303 rotates to be perpendicular to the axis of the secondary valve pipe 2, the gas is cut off. This design gives the ball valve the characteristics of rapid opening and closing, making it easy to operate and responding quickly. Furthermore, by setting the limiting sealing plate 302 and the circular sealing piece 304, the gas will not escape to the outside of the pipeline during the flow state. This design effectively solves the problem of fuel escape and is highly practical. Finally, by setting a flow hole sealing plate 305, both flow hole sealing plates 305 completely seal the two vent holes on the ball when the gas is cut off, further reducing the possibility of gas escape in the cut-off state. This solves the problem that most valves still use a sealing gasket between the valve stem and the valve body, but the sealing gasket has poor contact with the valve stem, which reduces the sealing between the valve stem and the valve body. This can easily lead to gas leakage after long-term use, reducing the practicality of the ball valve.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover 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. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof gas ball valve, comprising a main gas valve pipe (1) and a secondary valve pipe (2), characterized in that: Auxiliary valve pipes (2) are welded to both the left and right sides of the main gas valve pipe (1). A gas flow anti-leakage mechanism (3) is provided inside the main gas valve pipe (1). A valve control assembly (4) is provided above the main gas valve pipe (1). The gas flow leak prevention mechanism (3) includes two bearings (301) and two limiting and sealing plates (302). The main gas valve pipe (1) is fixedly installed with two bearings (301) and two limiting and sealing plates (302). The inner walls of the two bearings (301) are fixedly connected with gas opening and closing flow balls (303). The gas opening and closing flow balls (303) are fixedly installed with two circular sealing plates (304) connected to the limiting and sealing plates (302). The inner walls of the front and rear sides of the main gas valve pipe (1) are fixedly installed with flow hole sealing plates (305) that are adapted to the outer walls of the gas opening and closing flow balls (303).

2. The leak-proof gas ball valve according to claim 1, characterized in that: Both of the limiting and sealing plates (302) have circular grooves on their inner walls that are adapted to the circular sealing piece (304), and the inner wall of the circular groove is slidably connected to the outer wall of the circular sealing piece (304).

3. The leak-proof gas ball valve according to claim 1, characterized in that: The upper and lower ends of the flow hole sealing plate (305) are respectively connected to two limiting sealing plates (302), and the connection between the two is a fixed connection.

4. The leak-proof gas ball valve according to claim 1, characterized in that: The gas flow ball (303) is provided with a flow hole.

5. A leak-proof gas ball valve according to claim 1, characterized in that: The valve control assembly (4) includes a transmission rod (401) and a limiting block (404). The transmission rod (401) passes through the main air valve pipe (1) and the upper bearing (301). A valve wrench (402) is fixedly installed above the transmission rod (401). A fan-shaped extension plate (403) is fixedly installed on the outer wall of the transmission rod (401). Limiting blocks (404) are fixedly installed above the main air valve pipe (1) and on both the left and right sides of the transmission rod (401).

6. A leak-proof gas ball valve according to claim 5, characterized in that: The transmission rod (401) extends to one end of the inner wall of the upper bearing (301) and is fixedly connected to the top of the gas opening and closing flow ball (303).

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