Automatic safety cut-off device for gas valve

Abstract

This invention discloses an automatic safety shut-off device for a gas valve, relating to the field of valve equipment technology. It includes a valve control compartment and a valve maintenance compartment, which is installed on top of the valve control compartment. The invention comprises a valve control compartment, a maintenance cover, and a sealing connection mechanism. Multi-stage sealing is achieved through a sealing connection disc, a pipe limiting sleeve, and a sealing cover. A second positioning bolt limits the external pipe, improving stability during use. The maintenance cover facilitates manual maintenance of the valve maintenance compartment, and the sealing flange enhances the sealing effect. This invention incorporates a limiting mechanism and a start-up recovery compartment, integrating functions such as ensuring normal gas valve operation, adjusting the automatic shut-off mode based on internal leakage, and sealing the external pipe. This improves overall flexibility while reducing potential safety hazards and minimizing the labor intensity of frequent manual maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of valve equipment, in particular to an automatic safety cut-off device for a gas valve. Background Art

[0002] During the use of gas, a gas valve is generally installed on the gas pipeline to facilitate closing or opening the gas supply. However, the current gas valves need to be closed manually. When people are in a hurry to go out and forget to turn off the gas stove or when gas leaks, safety accidents are likely to occur.

[0003] Chinese patent announcement number CN 219673447 U discloses an automatic safety cut-off device for a gas valve, including a pipeline, a valve installed on the pipeline, two fixing plates tightly fitted on the surface of the pipeline, the two fixing plates are fixedly connected by bolts, and a support plate is fixed on the surface of one of the fixing plates. The patent sets a pipeline, a valve, a fixing plate, a support plate, a connection box, a motor, a connection plate, a round hole, a round block, a PLC controller, a timer, a battery and a gas sensor. When the gas pipeline is installed with the gas valve with an automatic cut-off device, the gas supply time can be timed during use. After a certain time, the valve can be automatically closed, and the valve can monitor the gas in real time. When the gas leaks, the valve will also automatically close and cut off the gas supply in the first time, thereby protecting the personal and property safety of the user and avoiding safety accidents.

[0004] However, the above scheme still has the following problems: it is unable to simultaneously take into account the normal operation of the gas valve, adjust the automatic cut-off mode according to the internal leakage situation, and seal and connect the external pipeline. The overall flexibility of use is low, resulting in the inability to cut off in time and posing potential safety hazards. Frequent manual maintenance is required. Therefore, the present invention needs to design an automatic safety cut-off device for the gas valve to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an automatic safety cut-off device for a gas valve to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an automatic safety cut-off device for a gas valve, comprising a valve control chamber, and further comprising:

[0007] Valve maintenance compartment, the valve maintenance compartment is installed on the top of the valve control compartment;

[0008] The valve body is installed at the bottom of the valve control compartment;

[0009] A valve installation chamber is installed at the bottom of the valve body, and sealing connection plates are installed on both sides of the valve installation chamber;

[0010] A sealing connection mechanism, which is installed on the side away from the two sealing connection plates, and is used to seal the whole with an external pipeline;

[0011] A startup recovery bin is installed on one side of the valve control bin. A startup recovery bin is installed on one side of the valve control bin. A recovery chamber is provided inside the startup recovery bin. A symmetrical and equidistantly distributed adsorption filter screen is fixedly connected inside the recovery chamber. The adsorption filter screen is used to recover the gas for preliminary filtering treatment.

[0012] The limit mechanism is installed on the side of the valve control chamber away from the start recovery chamber, and is used to limit the inside of the valve control chamber.

[0013] As a preferred embodiment of the present invention, a rotating disk is fixedly connected to the interior of the valve control bin, a rotating rod is rotatably connected to the bottom of the rotating disk, a control switch is fixedly connected to one side of the rotating rod, and limit plates are installed inside the valve control bin and on both sides of the rotating rod, and two recovery pipes extending to the interior of the start recovery bin are installed inside one of the limit plates.

[0014] As a preferred embodiment of the present invention, a gas quality sensor is fixedly connected to the inner wall of the valve control compartment and on the side away from the control switch, a reinforced bottom plate is installed inside the valve control compartment and at the bottom of the rotating rod, and ventilation holes are opened inside the reinforced bottom plate at equal intervals, a first cylinder is fixedly connected to the inside of the valve inspection compartment, one end of the bottom of the rotating rod passes through the reinforced bottom plate and is fixedly connected to a sliding elastic plate extending to the inside of the valve body, and the gas quality sensor is used to monitor the gas entering the valve control compartment through the ventilation hole in real time, and when it is detected that the gas content therein is close to the set value, the first cylinder inside the valve inspection compartment is operated to drive the rotating rod to move downward, driving the sliding elastic plate at the bottom until the valve body and the inside of the valve installation compartment are separated, and when it is detected that the gas content therein exceeds the set value, the recovery compartment is controlled to start operation.

[0015] As a preferred embodiment of the present invention, the limiting mechanism includes a cut-off bin and a fixed seat, the valve control bin is fixedly connected to a fixed seat on a side away from the start-up recovery bin, the fixed seat is fixedly connected to a cut-off bin on a side away from the valve control bin, a mounting seat is installed above the fixed seat, an electric telescopic rod is fixedly connected to the top of the mounting seat, and a pressure rod extending to the top of the connecting shaft is fixedly connected to the output end of the electric telescopic rod.

[0016] As a preferred embodiment of the present invention, the interior of the truncation bin is fixedly connected to a second cylinder, the output end of the second cylinder is fixedly connected to the connecting shaft, the interior of the truncation bin is provided with a cavity for use with the second cylinder, a truncation pressure block is installed at the connection between the fixed seat and the valve control bin, the connecting shaft passes through the truncation pressure block, is operated through the second cylinder, and moves to one side through the output end of the second cylinder, driving the connecting shaft to move to one side, until the truncation pressure block enters the interior of the valve control bin to resist the rotating rod, until a limiting effect is achieved.

[0017] As a preferred embodiment of the present invention, a filter bin is installed on one side of the startup recovery bin, a mounting card is fixedly connected to the bottom of the filter bin, a mounting block is installed at the bottom of the mounting card, a delivery pipe is installed on one side of the mounting block, a storage tank is installed on one side of the filter bin, the other end of the delivery pipe extends to the interior of the storage tank, a control valve is fixedly connected to the outside of the delivery pipe, an air pump is installed inside the control valve, the air pump is running, the control valve is opened, and the leaked gas is recovered to the interior of the storage tank through the recovery pipe, the startup recovery bin, the filter bin, and the delivery pipe in sequence for subsequent recycling.

[0018] As a preferred embodiment of the present invention, the sealing connection mechanism includes a pipe limit sleeve and a first sealing ring. The two sealing connection disks are each installed with a pipe limit sleeve on one side away from the valve mounting chamber, the two pipe limit sleeves are each installed with a first sealing ring inside, the two pipe limit sleeves are each installed with a sealing cover on one side away from the sealing connection disk, the two sealing covers are each installed with a mounting disk on one side away from the pipe limit sleeve, the two mounting disks are each rotatably connected to a limit screw inside, and the two limit screws are each provided with a protective cover on one end away from the mounting disk.

[0019] As a preferred embodiment of the present invention, the outer sides of the two limit screws are threadedly connected to the limit nuts, and the second sealing rings are installed between the two mounting plates and the limit screws, and the outer sides of the two sealing connection plates are opened with three mounting holes, the interiors of the mounting holes are threadedly connected with the first positioning bolts, and the two sides of the first sealing rings are threadedly connected with the second positioning bolts, and the sealing connection mechanism is installed one by one in the order of sealing connection plate, pipeline limit sleeve, first sealing ring inside the pipeline limit sleeve, sealing cover, mounting plate, second sealing ring, limit screw inside the mounting plate, limit nut on the outside of the limit screw, and protective cover. When in use, remove the protective cover, unscrew the limit nut and the limit screw, and connect the external pipeline to the inside through the mounting plate until it is connected to the inside of the valve mounting bin. When used in combination, multi-stage sealing treatment is performed by the sealing connection plate, pipeline limit sleeve and sealing cover, and the external pipeline is limited by the second positioning bolt, which improves stability during use.

[0020] As a preferred embodiment of the present invention, an inspection cover is installed on the top of the valve inspection bin, a sealing flange is sleeved on the outer side of the valve inspection bin, connecting channels are installed between the two valve installation bins and the sealing connection disks, the connecting channels are used to reinforce the connection between the valve installation bins and the sealing connection disks, the inspection cover is used to manually inspect and repair the valve inspection bin, and the sealing flange is used to strengthen the sealing effect of the valve inspection bin.

[0021] As a preferred embodiment of the present invention, a wireless signal transceiver is fixedly connected to the top of the inspection cover, a main control board is fixedly connected to the inside of the wireless signal transceiver, a control chip is fixedly connected to the outside of the main control board, the electric telescopic rod, the first cylinder, the second cylinder, the control valve, the gas quality sensor and the control switch are all electrically connected to the control chip, and the control chip is used to control the operation of the electric telescopic rod, the control valve, the gas quality sensor and the control switch, thereby realizing normal management of the equipment.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention is provided with a valve control chamber, a valve maintenance chamber, an maintenance cover and a sealing connection mechanism. The sealing connection mechanism is installed one by one in the order of a sealing connection plate, a pipeline limiting sleeve, a first sealing ring inside the pipeline limiting sleeve, a sealing cover, a mounting plate, a second sealing ring, a limiting screw inside the mounting plate, a limiting nut on the outside of the limiting screw, and a protective cover. When in use, the protective cover is removed, the limiting nut and the limiting screw are screwed off, and the external pipeline is connected to the inside through the mounting plate until it is connected to the inside of the valve mounting chamber. When used in combination, a multi-stage sealing treatment is performed through the sealing connection plate, the pipeline limiting sleeve and the sealing cover, and the external pipeline is limited by the second positioning bolt, thereby improving the stability during use. The valve mounting chamber and the sealing connection plate are reinforced and connected through the connecting channel. The maintenance cover facilitates manual maintenance of the valve maintenance chamber, and the sealing flange strengthens the sealing effect of the valve maintenance chamber.

[0024] 2. The present invention is provided with a limiting mechanism and a starting recovery bin, and the gas entering the valve control bin through the ventilation hole is monitored in real time by a gas quality sensor. When the gas content therein is detected to be close to a set value, the first cylinder inside the valve maintenance bin is operated to drive the rotating rod to move downward, and drive the sliding elastic plate at the bottom until the valve body and the inside of the valve installation bin are separated. When the gas content therein exceeds the set value, the recovery bin is controlled to start operation, the air pump is operated to open the control valve, and the second cylinder is operated to move to one side through the output end of the second cylinder, driving the connecting shaft to move to one side until the cut-off pressure block enters the valve control bin to resist the rotating rod until the limiting effect is achieved, thereby realizing the normal operation of the gas valve, adjusting the automatic cut-off mode according to the internal leakage situation, and sealing and connecting the external pipeline in one function, thereby improving the overall flexibility of use, reducing potential safety hazards, and reducing the labor intensity of frequent manual maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle;

[0026] Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0027] Figure 3 It is a schematic diagram of the overall structure of the present invention from a third viewing angle;

[0028] Figure 4 It is a schematic diagram of the overall structure of the present invention from a fourth viewing angle;

[0029] Figure 5 It is an enlarged schematic diagram of the sealing connection mechanism structure of the present invention;

[0030] Figure 6 This is an exploded schematic diagram of the sealing connection mechanism structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the internal structure of the limiting mechanism of the present invention;

[0032] Figure 8 This is a schematic diagram of the internal structure of the valve control chamber of the present invention from a first-person perspective;

[0033] Fig. 9 This is a schematic diagram of the internal structure of the valve control chamber of the present invention from the first perspective.

[0034] In the figure:

[0035] 1. Valve control compartment; 2. Valve maintenance compartment; 3. Maintenance cover; 4. Wireless signal transceiver; 5. Valve body; 6. Valve installation compartment; 7. Connection channel;

[0036] 8. Sealing connection plate; 81. Pipe limit sleeve; 82. First sealing ring; 83. Sealing cover; 84. Mounting plate; 85. Second sealing ring; 86. Limiting nut; 87. Limiting screw; 88. Protective cover; 89. Mounting hole;

[0037] 9. Cut-off chamber; 91. Cavity; 92. Fixed seat; 93. Pressure rod; 94. Mounting seat; 95. Electric telescopic rod; 96. Cut-off pressure block; 97. Connecting shaft;

[0038] 10. First positioning bolt; 11. Second positioning bolt; 12. Adsorption filter; 13. Sealing flange; 14. Start recovery bin; 15. Filter bin; 16. Mounting card; 17. Mounting block; 18. Storage tank; 19. Delivery pipeline; 20. Control valve; 21. Rotating disk; 22. Gas quality sensor; 23. Control switch; 24. Rotating rod; 25. Reinforcement bottom plate; 26. Recovery pipeline; 27. Recovery chamber. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-Figure 9 The present invention provides a technical solution: an automatic safety cut-off device for a gas valve, comprising a valve control compartment 1, and also comprising:

[0041] Valve maintenance chamber 2, valve maintenance chamber 2 is installed on the top of valve control chamber 1;

[0042] A valve body 5, the valve body 5 is installed at the bottom of the valve control chamber 1;

[0043] A valve installation chamber 6 is installed at the bottom of the valve body 5, and sealing connection plates 8 are installed on both sides of the valve installation chamber 6;

[0044] A sealing connection mechanism, which is installed on a side away from the two sealing connection plates 8;

[0045] A startup recovery bin 14 is installed on one side of the valve control bin 1. A startup recovery bin 14 is installed on one side of the valve control bin 1. A recovery chamber 27 is provided inside the startup recovery bin 14. The inside of the recovery chamber 27 is fixedly connected with symmetrical and equidistantly distributed adsorption filters 12.

[0046] The limiting mechanism is installed on the side of the valve control chamber 1 away from the start recovery chamber 14.

[0047] The present invention uses a sealing connection mechanism to seal the whole with an external pipeline, the adsorption filter 12 is used to recover the fuel gas for preliminary filtering, and the limiting mechanism is used to limit the inside of the valve control chamber 1.

[0048] See also Figure 1-Figure 4 , Figure 8-Figure 9 A rotating disk 21 is fixedly connected to the inside of the valve control chamber 1, and a rotating rod 24 is rotatably connected to the bottom of the rotating disk 21. A control switch 23 is fixedly connected to one side of the rotating rod 24. Limit plates are installed inside the valve control chamber 1 and on both sides of the rotating rod 24. Two recovery pipes 26 extending to the inside of the start recovery chamber 14 are installed inside one of the limit plates. A gas quality sensor 22 is fixedly connected to the inner wall of the valve control chamber 1 and on the side away from the control switch 23. A reinforced bottom plate 25 is installed inside the valve control chamber 1 and at the bottom of the rotating rod 24. Equally spaced ventilation holes are opened inside the reinforced bottom plate 25. A first cylinder is fixedly connected to the inside of the valve maintenance chamber 2. One end of the bottom of the rotating rod 24 passes through the reinforced bottom plate 25 and is fixedly connected to a sliding elastic plate extending to the inside of the valve body 5.

[0049] The present invention uses a gas quality sensor 22 to monitor the gas entering the valve control chamber 1 through the ventilation hole in real time. When the gas content is detected to be close to a set value, the first cylinder inside the valve maintenance chamber 2 is operated to drive the rotating rod 24 to move downward, driving the sliding elastic plate at the bottom until the valve body 5 and the valve installation chamber 6 are separated. When the gas content is detected to exceed the set value, the recovery chamber 14 is controlled to start operation.

[0050] See also Figure 1-Figure 4 , Figure 7 The limiting mechanism includes a cut-off bin 9 and a fixed seat 92. The side of the valve control bin 1 away from the start recovery bin 14 is fixedly connected with the fixed seat 92, and the side of the fixed seat 92 away from the valve control bin 1 is fixedly connected with the cut-off bin 9. A mounting seat 94 is installed above the fixed seat 92, and an electric telescopic rod 95 is fixedly connected to the top of the mounting seat 94. The output end of the electric telescopic rod 95 is fixedly connected to a pressure rod 93 extending to the top of the connecting shaft 97. The inside of the cut-off bin 9 is fixedly connected with a second cylinder, and the output end of the second cylinder is fixedly connected to the connecting shaft 97. A cavity 91 used in conjunction with the second cylinder is opened in the cut-off bin 9, and a cut-off pressure block 96 is installed at the connection between the fixed seat 92 and the valve control bin 1, and the connecting shaft 97 passes through the cut-off pressure block 96.

[0051] The present invention operates through the second cylinder, and the output end of the second cylinder moves to one side, driving the connecting shaft 97 to move to one side until it enters the valve control chamber 1 through the cut-off pressure block 96 to resist the rotating rod 24 until the limiting effect is achieved.

[0052] See also Figure 1-Figure 6 , Figure 8-Figure 9 The sealing connection mechanism includes a pipeline limiting sleeve 81 and a first sealing ring 82. The two sealing connection plates 8 are both installed with pipeline limiting sleeves 81 on one side away from the valve mounting chamber 6. The first sealing ring 82 is installed inside the two pipeline limiting sleeves 81. The two pipeline limiting sleeves 81 are both installed with sealing covers 83 on one side away from the sealing connection plates 8. The two sealing covers 83 are both installed with mounting plates 84 on one side away from the pipeline limiting sleeves 81. The interiors of the two mounting plates 84 are rotatably connected with limiting screws 87. The ends of the two limiting screws 87 away from the mounting plates 84 are both covered with protective covers 88. The outer sides of the two limiting screws 87 are both threadedly connected with limiting nuts 86. A second sealing ring 85 is installed between the two mounting plates 84 and the limiting screws 87. Three mounting holes 89 are opened on the outer sides of the two sealing connection plates 8. The interiors of the mounting holes 89 are both threadedly connected with first positioning bolts 10. The two first sealing rings 82 are both threadedly connected with second positioning bolts 11 on both sides.

[0053] The present invention installs the sealing connection mechanism one by one in the order of the sealing connection disk 8, the pipeline limiting sleeve 81, the first sealing ring 82 inside the pipeline limiting sleeve 81, the sealing cover 83, the mounting disk 84, the second sealing ring 85, the limiting screw 87 inside the mounting disk 84, the limiting nut 86 on the outside of the limiting screw 87, and the protective cover 88. When in use, the protective cover 88 is removed, the limiting nut 86 and the limiting screw 87 are unscrewed, and the external pipeline is connected to the inside through the mounting disk 84 until it is connected to the inside of the valve mounting chamber 6. When used in combination, multi-stage sealing treatment is performed through the sealing connection disk 8, the pipeline limiting sleeve 81, and the sealing cover 83, and the external pipeline is limited by the second positioning bolt 11, thereby improving the stability during use.

[0054] See also Figure 1-Figure 5 , Figure 8-Figure 9 An inspection cover 3 is installed on the top of the valve inspection bin 2, a sealing flange 13 is sleeved on the outer side of the valve inspection bin 2, and connecting channels 7 are installed between the two valve installation bins 6 and the sealing connection disk 8.

[0055] The present invention uses the connecting channel 7 to reinforce the connection between the valve installation chamber 6 and the sealing connection plate 8, the inspection cover 3 is used to manually inspect and process the valve inspection chamber 2, and the sealing flange 13 is used to enhance the sealing effect of the valve inspection chamber 2.

[0056] See also Figure 1-Figure 9A filter bin 15 is installed on one side of the start recovery bin 14, a mounting card plate 16 is fixedly connected to the bottom of the filter bin 15, a mounting block 17 is installed at the bottom of the mounting card plate 16, a delivery pipe 19 is installed on one side of the mounting block 17, a storage tank 18 is installed on one side of the filter bin 15, the other end of the delivery pipe 19 extends to the inside of the storage tank 18, a control valve 20 is fixedly connected to the outside of the delivery pipe 19, an air pump is installed inside the control valve 20, a wireless signal transceiver 4 is fixedly connected to the top of the inspection cover 3, a main control board is fixedly connected to the inside of the wireless signal transceiver 4, a control chip is fixedly connected to the outside of the main control board, and the electric telescopic rod 95, the first cylinder, the second cylinder, the control valve 20, the gas quality sensor 22 and the control switch 23 are all electrically connected to the control chip.

[0057] The present invention operates the air pump to open the control valve 20, and sequentially recovers the leaked gas to the storage tank 18 through the recovery pipe 26, the recovery bin 14, the filter bin 15, and the delivery pipe 19 for subsequent recycling. The control chip is used to control the operation of the electric telescopic rod 95, the control valve 20, the gas quality sensor 22, and the control switch 23, thereby realizing the normal management of the equipment. The gas quality sensor 22 measures environmental parameters, converts them into signals and sends them to the control chip. The control chip receives and processes the signals, and generates corresponding control signals according to a preset control algorithm.

[0058] Working principle:

[0059] The sealing connection mechanism is installed one by one in the order of the sealing connection plate 8, the pipe limiting sleeve 81, the first sealing ring 82 inside the pipe limiting sleeve 81, the sealing cover 83, the mounting plate 84, the second sealing ring 85, the limiting screw 87 inside the mounting plate 84, the limiting nut 86 outside the limiting screw 87, and the protective cover 88;

[0060] When in use, remove the protective cover 88, unscrew the limiting nut 86 and the limiting screw 87, connect the external pipe to the inside through the mounting plate 84, and connect it to the inside of the valve mounting chamber 6. When used together, the sealing connection plate 8, the pipe limiting sleeve 81, and the sealing cover 83 are used for multi-stage sealing. The external pipe is limited by the second positioning bolt 11, which improves the stability during use;

[0061] The valve installation chamber 6 and the sealing connection plate 8 are reinforced and connected through the connecting channel 7, the inspection cover 3 facilitates manual inspection and treatment of the valve inspection chamber 2, and the sealing flange 13 strengthens the sealing effect of the valve inspection chamber 2;

[0062] The gas entering the valve control chamber 1 through the ventilation hole is monitored in real time by the gas quality sensor 22. When the gas content is detected to be close to the set value, the first cylinder in the valve maintenance chamber 2 is operated to drive the rotating rod 24 to move downward, driving the sliding elastic plate at the bottom until the valve body 5 and the valve installation chamber 6 are separated. When the gas content exceeds the set value, the recovery chamber 14 is controlled to start running, and the control valve 20 is opened through the air pump. The leaked gas is recovered to the storage tank 18 through the recovery pipeline 26, the recovery chamber 14, the filter chamber 15, and the delivery pipeline 19 in turn. The adsorption filter 12 is used to recover the gas for preliminary filtering and subsequent recycling.

[0063] The second cylinder is operated, and the output end of the second cylinder moves to one side, driving the connecting shaft 97 to move to one side, until the cut-off pressure block 96 enters the valve control chamber 1 to resist the rotating rod 24, until the limiting effect is achieved;

[0064] The control chip controls the operation of the electric telescopic rod 95, the control valve 20, the gas quality sensor 22 and the control switch 23, thereby realizing the normal management of the equipment. The gas quality sensor 22 measures environmental parameters, converts them into signals and sends them to the control chip. The control chip receives and processes the signals and generates corresponding control signals according to a preset control algorithm, thereby realizing the normal operation of the gas valve, adjusting the automatic cut-off mode according to the internal leakage situation, and sealing and connecting the external pipeline, thereby improving the overall flexibility of use, reducing potential safety hazards, and reducing the labor intensity of frequent manual maintenance.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic safety shut-off device for a gas valve, comprising a valve control chamber (1), characterized in that: Also includes: A valve inspection chamber (2), the valve inspection chamber (2) is installed on the top of the valve control chamber (1); A valve body (5), the valve body (5) being mounted at the bottom of the valve control chamber (1); A valve installation chamber (6), the valve installation chamber (6) being installed at the bottom of the valve body (5), and sealing connection plates (8) being installed on both sides of the valve installation chamber (6); A sealing connection mechanism, the sealing connection mechanism is installed on a side away from the two sealing connection plates (8), and the sealing connection mechanism is used to seal the whole with an external pipeline; A startup recovery bin (14), the startup recovery bin (14) being installed on one side of the valve control bin (1), the startup recovery bin (14) being installed on one side of the valve control bin (1), the startup recovery bin (14) being provided with a recovery chamber (27) inside, the recovery chamber (27) being fixedly connected with symmetrical and equidistantly distributed adsorption filters (12) inside, the adsorption filters (12) being used to recover the fuel gas for preliminary filtering treatment; A limit mechanism, the limit mechanism is installed on a side of the valve control chamber (1) away from the start recovery chamber (14), and the limit mechanism is used to perform limit processing on the inside of the valve control chamber (1); A rotating disk (21) is fixedly connected to the interior of the valve control chamber (1), and a rotating rod (24) is rotatably connected to the bottom of the rotating disk (21); The limiting mechanism comprises a cut-off bin (9) and a fixing seat (92); the fixing seat (92) is fixedly connected to a side of the valve control bin (1) away from the start recovery bin (14); the cut-off bin (9) is fixedly connected to a side of the fixing seat (92) away from the valve control bin (1); a mounting seat (94) is mounted above the fixing seat (92); an electric telescopic rod (95) is fixedly connected to the top of the mounting seat (94); and a pressure rod (93) extending to the top of a connecting shaft (97) is fixedly connected to the output end of the electric telescopic rod (95); A second cylinder is fixedly connected to the interior of the cut-off chamber (9); an output end of the second cylinder is fixedly connected to a connecting shaft (97); a cavity (91) for use with the second cylinder is provided inside the cut-off chamber (9); a cut-off pressure block (96) is installed at the connection between the fixing seat (92) and the valve control chamber (1); the cut-off pressure block (96) enters the interior of the valve control chamber (1) to resist the rotating rod (24); A filter bin (15) is installed on one side of the startup recovery bin (14); a mounting card (16) is fixedly connected to the bottom of the filter bin (15); a mounting block (17) is installed on the bottom of the mounting card (16); a delivery pipe (19) is installed on one side of the mounting block (17); a storage tank (18) is installed on one side of the filter bin (15); the other end of the delivery pipe (19) extends into the interior of the storage tank (18); and a control valve (20) is fixedly connected to the outside of the delivery pipe (19).

2. The automatic safety cut-off device for a gas valve according to claim 1, characterized in that: A control switch (23) is fixedly connected to one side of the rotating rod (24), and limit plates are installed inside the valve control chamber (1) and on both sides of the rotating rod (24), wherein two recovery pipes (26) extending to the inside of the start recovery chamber (14) are installed inside one of the limit plates.

3. The automatic safety cut-off device for a gas valve according to claim 2, characterized in that: A gas quality sensor (22) is fixedly connected to the inner wall of the valve control chamber (1) and at a side away from the control switch (23); a reinforcement base plate (25) is installed inside the valve control chamber (1) and at the bottom of the rotating rod (24); ventilation holes are arranged in an equidistant manner inside the reinforcement base plate (25); a first cylinder is fixedly connected to the inside of the valve inspection chamber (2); and one end of the bottom of the rotating rod (24) passes through the reinforcement base plate (25) and is fixedly connected to a sliding elastic plate extending to the inside of the valve body (5).

4. The automatic safety cut-off device for a gas valve according to claim 1, characterized in that: The sealing connection mechanism comprises a pipeline limiting sleeve (81) and a first sealing ring (82); the two sealing connection plates (8) are both installed with a pipeline limiting sleeve (81) on one side away from the valve mounting chamber (6); the two pipeline limiting sleeves (81) are both installed with a first sealing ring (82); the two pipeline limiting sleeves (81) are both installed with a sealing cover (83) on one side away from the sealing connection plate (8); the two sealing covers (83) are both installed with a mounting plate (84) on one side away from the pipeline limiting sleeve (81); the two mounting plates (84) are both rotatably connected with a limiting screw (87) on the inside; and the two limiting screws (87) are both covered with a protective cover (88) on one end away from the mounting plate (84).

5. The automatic safety cut-off device for a gas valve according to claim 4, characterized in that: The outer sides of the two limiting screws (87) are both threadedly connected to the limiting nuts (86), a second sealing ring (85) is installed between the two mounting plates (84) and the limiting screws (87), three mounting holes (89) are opened on the outer sides of the two sealing connection plates (8), the insides of the mounting holes (89) are both threadedly connected to the first positioning bolts (10), and the two sides of the two first sealing rings (82) are both threadedly connected to the second positioning bolts (11).

6. The automatic safety cut-off device for a gas valve according to claim 1, characterized in that: An inspection cover (3) is installed on the top of the valve inspection chamber (2), and a sealing flange (13) is sleeved on the outer side of the valve inspection chamber (2). A connecting channel (7) is installed between the two valve installation chambers (6) and the sealing connection plate (8). The connecting channel (7) is used to reinforce the connection between the valve installation chamber (6) and the sealing connection plate (8). The inspection cover (3) is used to manually inspect and repair the valve inspection chamber (2), and the sealing flange (13) is used to enhance the sealing effect of the valve inspection chamber (2).

7. The automatic safety cut-off device for a gas valve according to claim 6, characterized in that: A wireless signal transceiver (4) is fixedly connected to the top of the inspection cover (3); a main control board is fixedly connected to the interior of the wireless signal transceiver (4); a control chip is fixedly connected to the exterior of the main control board; the electric telescopic rod (95), the first cylinder, the second cylinder, the control valve (20), the gas quality sensor (22), and the control switch (23) are all electrically connected to the control chip; and the control chip is used to control the operation of the electric telescopic rod (95), the control valve (20), the gas quality sensor (22), and the control switch (23).

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