Gas emergency shut-off valve

Abstract

The utility model discloses a kind of gas emergency shut-off valves, it is related to gas emergency shut-off valve technical field, the utility model includes emergency shut-off valve main body and control rod, emergency shut-off valve main body outer ring is respectively sleeved with support ring and is provided with buckle slot, and support ring bottom is connected with buckle;Support ring inner ring is connected with abutment ring.The utility model is set through support ring, abutment ring and dust cover, dust cover can be covered in control rod outside, can reduce control rod and lead to gas emergency shut-off valve unexpected closing situation under the external mis-touch down pressure, while can reduce the pollution of external dust to control rod;Abutment ring and control rod abut, not only can be on support ring when moving synchronously drive abutment ring and push control rod, assist to complete the opening operation of gas emergency shut-off valve, also can limit support ring excessive displacement upwards, reduce the situation of support ring and control rod separation, to reduce the risk that dust cover is lost due to support ring drop-off;Effectively reduce dust cover drop-off phenomenon occurs.

Description

Technical Field

[0001] This utility model relates to the technical field of gas emergency shut-off valves, specifically a gas emergency shut-off valve. Background Technology

[0002] Gas emergency shut-off valves are key safety components in gas transmission systems. They are mainly used in gas supply pipelines in residential buildings, commercial premises, and industrial settings. Their core function is to automatically or manually cut off gas transmission in dangerous conditions such as gas leaks or abnormal pressure, thereby preventing safety accidents.

[0003] To reduce the probability of the control lever being contaminated by external dust and to minimize the risk of accidental valve closure due to unnecessary accidental activation, most gas emergency shut-off valves are currently equipped with dust covers. However, existing dust covers are mostly made of plastic and have a relatively simple structure. Their connection to the valve body or related components relies solely on a simple snap-fit ​​limiting structure. This limiting method is not very stable, and during daily use, minor impacts, vibrations, or long-term wear can easily cause the dust cover to detach from the valve, or even be lost. Once the dust cover falls off or is lost, the control lever will be directly exposed to the outside. The unprotected control lever is highly susceptible to accidental activation due to external influences, leading to the unexpected closure of the gas emergency shut-off valve. This not only interrupts the normal gas supply and affects the user experience but may also cause additional interference to the stability of the gas system due to frequent valve opening and closing, making it difficult to meet the safety and reliability requirements in actual use. Summary of the Invention

[0004] Therefore, the purpose of this utility model is to provide a gas emergency shut-off valve to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas emergency shut-off valve, comprising an emergency shut-off valve body and a control rod, wherein the outer ring of the emergency shut-off valve body is respectively fitted with a support ring and has a buckle groove, and the bottom of the support ring is connected with a buckle; the inner ring of the support ring is connected with a stop ring, and anti-reverse grooves are provided on both sides of the support ring; a dust cover is fitted on the outside of the support ring, and anti-reverse plates are connected on both sides of the bottom of the dust cover; two grooves are provided inside the dust cover.

[0006] By adopting the above technical solutions, the dust cover can cover the control rod to form initial protection, reducing dust contamination and the risk of accidental contact. The cooperation between the retaining ring and the control rod, and the adaptation between the anti-reverse groove and the anti-reverse plate, can reduce the problem of component detachment from two dimensions: preventing the support ring from falling off and preventing the dust cover from loosening. At the same time, the groove design provides operating space for convenient disassembly of the dust cover. The overall structure is designed to improve the stability of the dust cover and ensure the reliability of the control rod operation, providing a basic framework for solving the defects of existing dust covers that are easy to fall off and control rods that are easy to accidentally touch.

[0007] Furthermore, the support ring is detachably connected to the buckle groove via a snap fastener.

[0008] By adopting the above technical solution, when the valve is opened, the support ring can disengage from the latch groove and move upward, driving the abutment ring to drive the control rod; after the valve is opened, the support ring can move downward and reset, achieving stable positioning through the cooperation of the latch and the latch groove, preventing the support ring from shaking randomly; this disassembly and connection method not only ensures the flexibility of the support ring during operation, but also limits its position after reset.

[0009] Furthermore, the abutment ring abuts against the control rod.

[0010] By adopting the above technical solution, on the one hand, when the support ring moves upward, the abutment ring can transmit the driving force of the support ring to the control rod, causing the control rod to move upward to complete the valve opening operation. Opening can be achieved without direct contact with the control rod, improving the convenience of operation. On the other hand, the contact relationship between the abutment ring and the control rod can physically limit the upward movement of the support ring, preventing the support ring from separating from the control rod due to excessive upward movement, thereby indirectly reducing the risk of the dust cover falling off with the support ring and ensuring the connection stability of the overall structure.

[0011] Furthermore, the dust cover is detachably connected to the support ring via threads.

[0012] By adopting the above technical solution, compared with the traditional simple snap-fit ​​connection, the threaded connection can significantly improve the initial connection stability between the dust cover and the support ring, and reduce the loosening of the dust cover due to slight collisions and vibrations. At the same time, the detachable nature of the thread allows the dust cover to be easily removed when the control lever needs to be operated, which not only takes into account the protective stability in daily use, but also retains the convenience in emergency operation, and provides a basic connection guarantee for the subsequent anti-loosening of the anti-lock groove and anti-lock plate.

[0013] Furthermore, both one end and the top of the anti-reverse groove are sloped, and the anti-reverse plate abuts against the anti-reverse groove.

[0014] By adopting the above technical solution, when tightening the dust cover, the anti-reverse plate can undergo slight deformation along the slope of the anti-reverse groove, allowing the dust cover to be smoothly screwed into the support ring, reducing assembly difficulty; when the dust cover is tightened or shows a tendency to loosen by rotating counterclockwise, the anti-reverse plate will elastically return to its original shape with the component, lock into the anti-reverse groove and abut against the end of the groove without a slope, forming a rigid block, effectively reducing the possibility of the dust cover loosening further by rotating, greatly reducing the risk of the dust cover falling off, and improving connection stability.

[0015] Furthermore, the two anti-reverse plates are perpendicularly distributed to the two grooves.

[0016] By adopting the above technical solution, when the dust cover needs to be removed, pressing the area corresponding to the groove on the outer wall of the dust cover will cause the bottom of the dust cover to gradually change from a circle to an ellipse. Since the anti-reverse plate is perpendicular to the groove, the elliptical deformation will increase the distance between the two anti-reverse plates, allowing it to move smoothly out of the anti-reverse groove and release the restriction on the dust cover. This distribution method ensures the coordination between the deformation of the groove and the displacement of the anti-reverse plate, avoiding the problem that the anti-reverse plate cannot detach from the anti-reverse groove and the dust cover is difficult to remove due to misalignment, thus taking into account both structural stability and ease of operation.

[0017] Furthermore, interfaces are provided on both sides of the emergency shut-off valve body, a cable is connected to the upper side of one side of the emergency shut-off valve body, and the control rod is connected to the top of the emergency shut-off valve body.

[0018] By adopting the above technical solution, the interface is used to connect the gas transmission pipeline, providing a channel for gas flow and ensuring that the valve can be connected to the gas system; the cable can transmit external control signals or status information. For example, when a gas leak is detected, the cable can transmit a signal to the internal module of the valve to achieve automatic closure and improve safety; the control lever, as the core component for manual operation, provides a direct operating medium for opening and closing the valve.

[0019] Furthermore, the support ring, abutment ring, dust cover, anti-reverse plate, and buckle are all made of ABS material.

[0020] By adopting the above technical solutions, the high strength, good toughness, fatigue resistance, and resistance to aging of ABS material are utilized to meet the functional requirements of each component. When the anti-reverse plate deforms upon contact with the anti-reverse groove, and the dust cover deforms upon pressing, it is not prone to breakage or permanent deformation, ensuring the reliability of repeated operations. When the support ring and the abutment ring drive the control lever for a long time or are subjected to external impacts, they can maintain structural stability and reduce wear. During frequent disassembly and assembly of the buckle with the buckle groove, it is not prone to plastic deformation and wear, extending the overall service life of the components and providing material assurance for the long-term stable realization of the structural function.

[0021] Furthermore, the support ring, the abutment ring, and the buckle are fixedly connected by integral injection molding, and the dust cover and the anti-reverse plate are fixedly connected by integral injection molding.

[0022] By adopting the above technical solution, the traditional multi-component assembly process is omitted. On the one hand, the gap error generated during assembly is reduced. For example, the connection between the support ring and the abutment ring is gapless, which can ensure that the driving force is accurately transmitted to the abutment ring when the support ring moves upward, avoiding power lag. On the other hand, the one-piece molding makes the connection between components more secure. For example, the dust cover and the anti-loosening plate will not fail due to loose assembly, which improves the coordination and reliability of each component in the working process. At the same time, it simplifies the production process and reduces the process complexity in the production process.

[0023] In summary, the present invention has the following main advantages: 1. This utility model, through the design of a support ring, abutment ring, and dust cover, allows the dust cover to cover the outside of the control rod, reducing the possibility of the gas emergency shut-off valve unexpectedly closing due to accidental pressure from external sources. It also reduces dust contamination of the control rod. The abutment ring, abutting against the control rod, not only pushes the control rod upwards simultaneously when the support ring moves upwards, assisting in opening the gas emergency shut-off valve, but also limits excessive upward displacement of the support ring, reducing the possibility of separation between the support ring and the control rod, thus lowering the risk of the dust cover being lost due to the support ring detaching. Furthermore, the support ring can be locked in place by a snap-fit ​​mechanism with the groove of the emergency shut-off valve body, providing stable positioning after the support ring repositions downwards. The dust cover also has internal space to accommodate the upward-moving control rod, reducing the downward pressure on the control rod when the dust cover moves downwards with the support ring, effectively minimizing the occurrence of the dust cover detaching. 2. This utility model, through the setting of a retaining groove and a retaining plate, features a retaining groove with one end and top sloping. When the dust cover is connected to the support ring via threads, the retaining plate abuts against the sloping end of the retaining groove and deforms appropriately with the dust cover, facilitating the tightening of the dust cover. When the dust cover is tightened or shows a tendency to loosen, the dust cover and retaining plate can return to their original shape due to their elasticity, allowing the retaining plate to enter the retaining groove and abut against the other end of the groove. Since the other end of the retaining groove has no sloping surface to form an obstruction, this effectively reduces the possibility of the dust cover loosening during use, further reducing the risk of the dust cover falling off and being lost, and improving the stability of the connection between the dust cover and the support ring; further reducing the risk of the dust cover falling off. 3. This utility model, through the design of the groove, allows the operator to press the area corresponding to the groove on the outer wall of the dust cover when it is necessary to remove the dust cover to manually press down the control lever. This causes the bottom of the dust cover to deform, changing from a circle to an ellipse. Since the two anti-reverse plates are perpendicularly distributed to the two grooves, the distance between the two anti-reverse plates increases after the bottom of the dust cover changes to an ellipse, thereby allowing the anti-reverse plates to move out of the anti-reverse groove and releasing the restriction on the dust cover, so that the dust cover can be rotated counterclockwise to remove it. This design provides a convenient disassembly path for the dust cover while ensuring its installation stability, without the need for forced disassembly with additional tools, reducing the possibility of damage to the dust cover, anti-reverse plates, or support rings during disassembly, and balancing structural stability and ease of operation. It also facilitates the removal of the dust cover to manually close the main body of the emergency shut-off valve by pressing down the control lever. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the dust cover when closed. Figure 3 This is a schematic diagram of the cross-sectional structure of the dust cover when the present invention is opened; Figure 4 This is a schematic diagram of the explosion structure of the dust cover of this utility model; Figure 5 This is a bottom view schematic diagram of the support ring structure of this utility model.

[0025] In the diagram: 1. Emergency shut-off valve body; 2. Interface; 3. Cable; 4. Control rod; 5. Support ring; 6. Abutment ring; 7. Anti-reverse groove; 8. Dust cover; 9. Anti-reverse plate; 10. Groove; 11. Clip groove; 12. Buckle. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The embodiments of this utility model will be described below based on its overall structure. Example 1

[0028] A gas emergency shut-off valve, such as Figures 1-5As shown, the device includes an emergency shut-off valve body 1 and a control rod 4. The outer ring of the emergency shut-off valve body 1 is fitted with a support ring 5 and a locking groove 11. A buckle 12 is connected to the bottom of the support ring 5. The support ring 5 is detachably connected to the locking groove 11 via the buckle 12. When the valve is opened, the operator moves the support ring 5 downwards to reset it. The buckle 12 at the bottom of the support ring 5 will engage with the locking groove 11, thus limiting the position of the support ring 5. The dust cover 8 has a reserved space inside to accommodate the control rod 4 after it is moved upwards, preventing the dust cover 8 from pressing down on the control rod 4 when the support ring 5 resets, thus preventing the valve from closing unexpectedly. An abutment ring 6 is connected to the inner ring of the support ring 5. The abutment ring 6 abuts against the control rod 4. Anti-reverse grooves 7 are provided on both sides of the support ring 5. A dust cover 8 is fitted onto the outside of the support ring 5. The operator can pull the dust cover 8 upwards, and the dust cover 8, through its threaded engagement with the support ring 5, will cause the support ring 5 to move upwards synchronously; or the operator can directly pull the support ring 5 upwards. During the upward movement of the support ring 5, the abutment ring 6 will move upwards synchronously. As the abutment ring 6 moves upwards, it will continuously press against the bottom of the control rod 4 and apply an upward thrust to the control rod 4, causing it to move upwards and thus completing the valve opening action. During this process, the abutment ring 6 can also regulate the upward movement of the support ring 5. To limit the movement of the support ring 5 and prevent it from separating from the control lever 4 due to excessive upward movement, thereby indirectly reducing the risk of the dust cover 8 falling off with the support ring 5, the dust cover 8 is detachably connected to the support ring 5 via threads. Anti-reverse plates 9 are connected to both sides of the bottom of the dust cover 8, and the anti-reverse plates 9 abut against the anti-reverse groove 7. When the worker reinstalls the protective cover, the worker places the dust cover 8 on top of the support ring 5 and tightens it. When the worker tightens the dust cover 8 clockwise, the anti-reverse plate 9 will abut against the inclined end and top slope of the anti-reverse groove 7. Because the dust cover 8 and the anti-reverse plate 9 have a certain degree of elasticity, the abutment process will force the dust cover 8 and the anti-reverse plate 9 to abut against each other. The plate 9 undergoes a slight deformation, and its bottom outer diameter is temporarily larger than the diameter of the support ring 5, thus successfully completing the tightening operation of the dust cover 8. When the dust cover 8 is tightened, or when it tends to loosen by rotating counterclockwise during long-term use, the dust cover 8 and the anti-reverse plate 9 will restore their original shape by their own elasticity. The anti-reverse plate 9 will naturally fit into the anti-reverse groove 7. If the dust cover 8 continues to rotate counterclockwise and loosen, the anti-reverse plate 9 will abut against the other end of the anti-reverse groove 7 without the bevel, forming a rigid block, effectively preventing the dust cover 8 from rotating further, thereby reducing the risk of the dust cover 8 falling off due to loosening and ensuring the stability of the connection between the dust cover 8 and the support ring 5.The dust cover 8 has two grooves 10 inside, and two retaining plates 9 are perpendicularly distributed to the two grooves 10. When the control lever 4 needs to be manually operated to close the gas emergency shut-off valve, the operator presses the area on the outer wall of the dust cover 8 corresponding to the groove 10. At this time, the bottom of the dust cover 8 deforms due to the force, gradually changing from a circle to an ellipse. Since the two retaining plates 9 are perpendicularly distributed to the two grooves 10, the deformation of the dust cover 8 will increase the distance between the two retaining plates 9. When the distance is greater than the width of the retaining groove 7, the retaining plates 9 are completely removed from the retaining groove 7, and the limiting state of the dust cover 8 is released. Then the operator rotates the dust cover 8 counterclockwise to separate it from the support ring 5 through the threads and remove it. At this time, the control lever 4 is fully exposed.

[0029] See Figures 1-3 In the above embodiment, the emergency shut-off valve body 1 is provided with interfaces 2 on both sides. The emergency shut-off valve body 1 is connected to the gas transmission pipeline through the interfaces 2 on both sides to form a basic channel for gas flow. A cable 3 is connected to the top of one side of the emergency shut-off valve body 1. The cable 3 is used to transmit electrical signals and current. When the sensor probe around the gas user terminal detects a gas leak, the solenoid valve module inside the emergency shut-off valve body 1 can automatically close the valve to increase the safety of gas use. The control rod 4 is connected to the top of the emergency shut-off valve body 1. The control rod 4 is the core operating component for manually opening and closing the valve. Example 2

[0030] Based on the above embodiment one, the following settings are now implemented to increase the service life of the structure.

[0031] See Figures 1-5 In the above embodiments, the support ring 5, the abutment ring 6, the dust cover 8, the anti-reverse plate 9, and the buckle 12 are all made of ABS material. Because ABS material has the characteristics of high strength, good toughness, fatigue resistance and not easy to age, it can ensure that the anti-reverse plate 9 is not easy to break or permanent deformation when it comes into contact with the anti-reverse groove 7 and the dust cover 8 is pressed and deformed. It can also ensure that the support ring 5 and the abutment ring 6 maintain structural stability when repeatedly driving the control rod 4 or being subjected to external force collision, thus extending the overall service life of the components. It can also ensure the convenience of frequent disassembly and assembly of the buckle 12. Example 3

[0032] Based on the above embodiment one, the following settings are now adopted for ease of production.

[0033] See Figures 1-5In the above embodiments, the support ring 5, the abutment ring 6, and the buckle 12 are fixedly connected by integral injection molding, and the dust cover 8 and the anti-reverse plate 9 are fixedly connected by integral injection molding. The integral injection molding process is mature, and this processing method omits the traditional multi-part assembly process, which not only reduces the assembly error in the production process, but also makes the connection between the parts more secure. For example, the abutment ring 6 and the support ring 5 will not cause power transmission lag or failure due to assembly gaps, and the anti-loosening effect of the anti-reverse plate 9 and the dust cover 8 will not be affected by assembly loosening. This further ensures the coordination and reliability of the parts in the working process, and ensures that the protection and operation functions of the entire valve are stably realized.

[0034] The implementation principle of this utility model is as follows: First, the emergency shut-off valve body 1 is connected to the gas transmission pipeline through the interfaces 2 on both sides to form a basic channel for gas flow; the cable 3 is used to transmit electrical signals and current. When the sensor probe around the gas user terminal detects a gas leak, the solenoid valve module inside the emergency shut-off valve body 1 can automatically close the valve to increase the safety of gas use; and the control lever 4 is the core operating component for manually opening and closing the valve. When the gas emergency shut-off valve needs to be opened, the operator can pull the dust cover 8 upwards. The dust cover 8 engages with the support ring 5 through the threaded engagement, causing the support ring 5 to move upwards synchronously. Alternatively, the operator can directly pull the support ring 5 upwards. During the upward movement of the support ring 5, the abutment ring 6 will move upwards simultaneously. As the abutment ring 6 moves upwards, it will continuously press against the bottom of the control rod 4 and apply an upward thrust to the control rod 4, causing it to move upwards and thus completing the valve opening action. During this process, the abutment ring 6 can also limit the upward movement of the support ring 5, preventing the support ring 5 from separating from the control rod 4 due to excessive upward movement, thereby indirectly reducing the risk of the dust cover 8 falling off with the support ring 5. After the valve is opened, the operator can move the support ring 5 downwards to reset it. The buckle 12 at the bottom of the support ring 5 will engage in the buckle groove 11, achieving the limit of the support ring 5. The dust cover 8 has a reserved space inside to accommodate the control rod 4 after it has moved upwards, which can prevent the dust cover 8 from pressing down on the control rod 4 when the support ring 5 is reset, thus preventing the valve from closing unexpectedly. When it is necessary to manually operate the control lever 4 to close the emergency gas shut-off valve, the operator presses the area corresponding to the groove 10 on the outer wall of the dust cover 8. At this time, the bottom of the dust cover 8 deforms due to the force, gradually changing from the original circle to an ellipse. Since the two anti-reverse plates 9 are perpendicular to the two grooves 10, the deformation of the dust cover 8 will increase the distance between the two anti-reverse plates 9. When the distance is greater than the width of the anti-reverse groove 7, the anti-reverse plates 9 are completely moved out of the anti-reverse groove 7, and the limiting state of the dust cover 8 is released. Then the operator rotates the dust cover 8 counterclockwise to separate it from the support ring 5 through the thread and remove it. At this time, the control lever 4 is fully exposed, and the operator can manually press down the control lever 4 to cause the internal structure of the valve to move, cut off the gas delivery channel, and complete the valve closing operation. When the staff reinstalls the protective cover, they place the dust cover 8 on top of the support ring 5 and tighten it. When the staff tightens the dust cover 8 clockwise, the anti-reverse plate 9 will abut against the inclined end and top slope of the anti-reverse groove 7. Because the dust cover 8 and the anti-reverse plate 9 have a certain degree of elasticity, during the abutment process, they will be forced to undergo slight deformation, temporarily increasing the outer diameter of its bottom end to be larger than the diameter of the support ring 5, thus successfully completing the tightening operation of the dust cover 8. After the dust cover 8 is tightened, or during long-term use... When the dust cover 8 begins to loosen by rotating counterclockwise, the dust cover 8 and the anti-reverse plate 9 will return to their original shape due to their own elasticity. The anti-reverse plate 9 will naturally lock into the anti-reverse groove 7. If the dust cover 8 continues to rotate counterclockwise and loosen, the anti-reverse plate 9 will abut against the other end of the anti-reverse groove 7 without the bevel, forming a rigid block, effectively preventing the dust cover 8 from rotating further, thereby reducing the risk of the dust cover 8 falling off due to loosening and ensuring the stability of the connection between the dust cover 8 and the support ring 5. The principle is the same as that of the bottle cap of some existing bottled mouthwash models. Furthermore, from the perspective of component performance and processing synergy, the support ring 5, the abutment ring 6, the dust cover 8, the anti-reverse plate 9, and the buckle 12 are all made of ABS material. Because ABS material has high strength, good toughness, fatigue resistance, and is not prone to aging, it ensures that the anti-reverse plate 9 is not easily broken or permanently deformed when it comes into contact with the anti-reverse groove 7 or when the dust cover 8 is pressed and deformed. It also ensures that the support ring 5 and the abutment ring 6 maintain structural stability when repeatedly moving the control lever 4 or being subjected to external impacts, extending the overall service life of the components. It also ensures the convenience of frequent disassembly and assembly of the buckle 12. Meanwhile, the support ring 5, The abutment ring 6 and the buckle 12 are fixedly connected by an integral injection molding process, and the dust cover 8 and the anti-reverse plate 9 are also fixedly connected by an integral injection molding process. This processing method eliminates the traditional multi-part assembly process, which not only reduces the assembly error in the production process, but also makes the connection between the parts more secure. For example, the abutment ring 6 and the support ring 5 will not cause power transmission lag or failure due to assembly gaps, and the anti-loosening effect of the anti-reverse plate 9 and the dust cover 8 will not be affected by assembly loosening. This further ensures the coordination and reliability of the parts in the working process, and ensures the stable realization of the protection and operation functions of the entire valve.

[0035] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A gas emergency shut-off valve, comprising an emergency shut-off valve body (1) and a control lever (4), characterized in that: The outer ring of the emergency shut-off valve body (1) is fitted with a support ring (5) and a buckle groove (11), and the bottom of the support ring (5) is connected with a buckle (12); the inner ring of the support ring (5) is connected with a stop ring (6), and the two sides of the support ring (5) are provided with anti-reverse grooves (7). The support ring (5) is fitted with a dust cover (8), and the bottom two sides of the dust cover (8) are connected with anti-reverse plates (9). The dust cover (8) has two grooves (10) inside.

2. The gas emergency shut-off valve according to claim 1, characterized in that: The support ring (5) is detachably connected to the buckle groove (11) via a buckle (12).

3. The gas emergency shut-off valve according to claim 1, characterized in that: The abutment ring (6) abuts against the control rod (4).

4. The gas emergency shut-off valve according to claim 2, characterized in that: The dust cover (8) is detachably connected to the support ring (5) by means of threads.

5. The gas emergency shut-off valve according to claim 1, characterized in that: The anti-reverse groove (7) has a sloping shape at one end and at the top, and the anti-reverse plate (9) abuts against the anti-reverse groove (7).

6. The gas emergency shut-off valve according to claim 5, characterized in that: The two anti-reverse plates (9) are perpendicularly distributed to the two grooves (10).

7. The gas emergency shut-off valve according to claim 1, characterized in that: The emergency shut-off valve body (1) is provided with interfaces (2) on both sides, and a cable (3) is connected to the top of one side of the emergency shut-off valve body (1). The control rod (4) is connected to the top of the emergency shut-off valve body (1).

8. The gas emergency shut-off valve according to claim 1, characterized in that: The support ring (5), the abutment ring (6), the dust cover (8), the anti-reverse plate (9), and the buckle (12) are all made of ABS material.

9. The gas emergency shut-off valve according to claim 8, characterized in that: The support ring (5), the abutment ring (6) and the buckle (12) are fixedly connected by integral injection molding, and the dust cover (8) and the anti-reverse plate (9) are fixedly connected by integral injection molding.

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