CN112117149A

CN112117149A - Fire-extinguishing explosion-proof switch

Info

Publication number: CN112117149A
Application number: CN202010993686.4A
Authority: CN
Inventors: 田文玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2020-12-22

Abstract

A fire extinguishing explosion-proof switch comprises a switch shell, a one-way valve, a switch door mechanism, a fire extinguishing mechanism, a rotary pressing mechanism, a wiring sealing mechanism and a detection mechanism, wherein the switch door mechanism is installed at the top end of the switch shell, the one-way valve is installed on the outer side of the switch shell, the fire extinguishing mechanism, the rotary pressing mechanism, the wiring sealing mechanism and the detection mechanism are all installed inside the switch shell, the fire extinguishing mechanism is uniformly distributed inside the switch shell to realize effective fire extinguishing, and the wiring sealing mechanism and the detection mechanism are installed around the rotary pressing mechanism; the switch is equipped with triple explosion-proof mechanism altogether, passes rotatory card dead sealing door with the electric wire, and the circular telegram wire of electric wire is connected to the conducting strip, fixes it through insulating screw, and the electric wire is put through with the conducting strip, and the conducting strip is led electrical pillar switch-on through hollow conducting pillar and hemisphere.

Description

Fire-extinguishing explosion-proof switch

Technical Field

The invention relates to the technical field of switches, in particular to a fire-extinguishing explosion-proof switch.

Background

The switch is generally a plastic shell, two leads are contacted or separated through external force to realize the connection and disconnection of a circuit, but the shell is made of plastic, so the heat resistance is low, the melting is easy to cause danger, and particularly, in some large paint production workshops, the electric energy required by equipment is large, so the large hidden dangers of explosion, fire and the like and the life and property safety are often generated. In order to overcome the defects in the prior art, the invention provides a device which can close and instantly generate electric sparks; the fire extinguishing device is provided with a plurality of sealing devices and a built-in fire extinguishing system, and the contact between the part where the electric spark is generated and external flammable and explosive gas and dust is isolated.

Disclosure of Invention

Aiming at the problems, the invention provides a device which can close and instantly generate electric sparks; the fire extinguishing device is provided with a plurality of sealing devices and a built-in fire extinguishing system, and the contact between the part where the electric spark is generated and external flammable and explosive gas and dust is isolated. The technical scheme adopted by the invention is as follows: a fire extinguishing explosion-proof switch comprises a switch shell, a one-way valve, a switch door mechanism, a fire extinguishing mechanism, a rotary pressing mechanism, a wiring sealing mechanism and a detection mechanism, and is characterized in that the switch door mechanism is arranged at the top end of the switch shell, the one-way valve is arranged on the outer side of the switch shell, the fire extinguishing mechanism, the rotary pressing mechanism, the wiring sealing mechanism and the detection mechanism are all arranged inside the switch shell, the fire extinguishing mechanism is uniformly distributed inside the switch shell to realize effective fire extinguishing, and the wiring sealing mechanism and the detection mechanism are arranged around the rotary pressing mechanism;

preferably, the door opening and closing mechanism comprises a cover, a hollow disc, an air pressure detector A, an air outlet, a top hemispherical round rod and a handle; the cover is rotatably arranged on the hollow disc, and when the cover is tightly covered, the cover and the hollow disc are sealed through rubber arranged on the cover and the hollow disc; the bottom end of the hollow disc and the top end of the switch shell are fixedly installed, and the hollow disc and the switch shell are sealed; the inner space of the hollow disc is stored with nitrogen, the air pressure detector A is fixedly arranged at the bottom end of the hollow disc, the air outlet is communicated with the inside of the hollow disc, and the nitrogen is discharged from the air outlet; the top hemispherical round rod is slidably arranged in a round hole in the inner side of the hollow disc, the bottom end of the top hemispherical round rod is provided with a spring, and the handle is fixedly arranged at the top end of the cover;

preferably, the fire extinguishing mechanism comprises a flammable rod, a spring A, a circular plate, a thin film and a circular hole; the inflammable rod penetrates through the shell of the fire extinguishing mechanism and is fixedly arranged in the round hole of the circular plate, the spring A is fixedly arranged in the shell of the fire extinguishing mechanism, the top end of the circular plate is fixedly connected with the bottom end of the spring A, and the side surface of the circular plate is provided with rubber which is sealed with the shell of the fire extinguishing mechanism; a plurality of films are arranged on the shell of the fire extinguishing mechanism, a round hole is arranged in each film, and fire extinguishing foam is filled in the shell of the fire extinguishing mechanism; when the switch is on fire, the fire ignites the inflammable rod, the circular plate is not blocked by the inflammable rod and can move under the action of the spring A, and the pressure of the circular plate enables the fire extinguishing foam stored in the fire extinguishing mechanism to burst the film to be sprayed out, so that the fire extinguishing effect is achieved.

Preferably, the rotary pressing mechanism comprises a button, a track, a sliding grabbing sleeve, a push rod, a spring B, a disc, a telescopic sealing tube, an insulating column and a conductive column; the button is rotatably arranged at the top end of the sliding grab sleeve, the track is fixedly arranged inside the switch shell, the track is provided with a long-strip-shaped groove and a triangular groove, and the long-strip-shaped groove and the triangular groove are sequentially arranged in a circumferential array manner; the sliding grab sleeve is rotatably installed inside the track, the button is in contact with the sliding grab sleeve, the push rod is rotatably installed inside the switch shell, the spring B top is fixedly installed at the bottom end of the push rod, the disc is fixedly installed at the bottom end of the spring B, the top end of the telescopic sealing tube is fixedly installed at the bottom end of the disc, the insulating column is fixedly installed inside the push rod, and the conductive column is fixedly installed inside the insulating column.

Preferably, the wiring sealing mechanism comprises an insulating screw, a rotary clamping sealing door, a cylindrical tube, a sealing shell, a conducting strip, a hollow conducting column and a hemispherical conducting column; the insulating screw is rotatably installed in a circular hole of the sealing shell, the cylindrical pipe is fixedly installed on the outer side of the sealing shell, the rotary clamping sealing door is fixedly installed on the outer side of the cylindrical pipe, the conducting plate is fixedly installed in the sealing shell, the hollow conducting column is fixedly installed at the inner side end of the conducting plate, and the hemispherical conducting column is slidably connected to the other end of the hollow conducting column; the electric wire penetrates through the rotary clamping sealing door, an electrified metal wire of the electric wire is connected to the conductive sheet and fixed through an insulating screw, the electric wire is communicated with the conductive sheet, and the conductive sheet is communicated with the hemispherical conductive column through the hollow conductive column; the rotary clamping sealing door is closed and clamps and seals the insulating outer skin of the electric wire, so that a sealing space is formed inside the electric wire, and the sealing effect is achieved.

Preferably, the detection mechanism comprises an air storage tank, an air pressure detector B and a storage battery; the air storage tank is fixedly arranged on the outer side of the sealed shell, the air pressure detector B is fixedly arranged on one side of the air storage tank shell, the storage battery is arranged on the outer side of the sealed shell, and the storage battery can be replaced by a rechargeable storage battery; when the button switch is pressed down and closed, the insulating column rotates and moves upwards under the action of the rotary pressing mechanism, then the conducting column in the insulating column rotates and moves to touch the other group of hollow conducting columns in the wiring sealing mechanism, so that the circuit is switched on to open the gas storage tank, when the cover is forgotten to be closed or is not opened under other conditions, the double detection mechanism is opened, and the safety is greatly improved.

The invention has the beneficial effects that:

1. when the air pressure in the switch shell is 1.6-2Pa through the arrangement of the detection mechanism, the control unit arranged in the switch shell controls the air outlet to be closed, so that the switch shell is filled with inert gas, and further, the explosion caused by overhigh concentration of inflammable and explosive gas entering the switch shell is prevented.

2. When the switch is on fire, the fire ignites the inflammable rod, the circular plate is not blocked by the inflammable rod and can move under the action of the spring, and the pressure of the circular plate enables the fire extinguishing foam stored in the fire extinguishing mechanism to burst the film to be sprayed out, so that the fire extinguishing effect is achieved.

3. When the cover is forgotten to be closed or is not opened for detection under other conditions, the double-detection mechanism can be opened, and the safety is greatly improved.

Drawings

Fig. 1 and 2 are schematic views of the overall structure of the present invention.

Fig. 3 and 4 are schematic structural diagrams of the switching door of the invention.

Fig. 5 and 6 are schematic structural views of the fire extinguishing apparatus of the present invention.

Fig. 7 is a schematic structural view of the rotary pressing mechanism of the present invention.

Fig. 8, 9 and 10 are schematic views of the wire connection sealing mechanism of the present invention.

FIG. 11 is a schematic view of the detecting mechanism of the present invention.

Reference numerals: 1-a switch housing; 2-one-way valve; 3-a door opening and closing mechanism; 4-a fire extinguishing mechanism; 5-rotating the pressing mechanism; 6-a wiring sealing mechanism; 7-a detection mechanism; 301-a lid; 302-a hollow disc; 303-air pressure detector a; 304-air outlet; 305-top hemispherical round bar; 306-a handle; 401-combustible pole; 402-spring a; 403-circular plate; 404-a film; 405-a circular hole; 501-a button; 502-track; 503-slip grab sleeve; 504-a push rod; 505-spring B; 506-a disc; 507-a telescopic sealing pipe; 508-an insulating column; 509-conductive post; 601-insulating screws; 602-rotating the seized sealing door; 603-cylindrical tube; 604-a sealed housing; 605-a conductive sheet; 606-hollow conducting pillars; 607-hemispherical conductive post; 701-an air storage tank; 702-air pressure detector B; 703-storage battery.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Examples

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in many ways other than those described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit of the invention, and therefore the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, and fig. 11, in an alternative embodiment of the present invention, except for the same parts as the previous embodiment, the fire-extinguishing explosion-proof switch comprises a switch shell 1, a one-way valve 2, a door opening and closing mechanism 3, a fire-extinguishing mechanism 4, a rotary pressing mechanism 5, a wiring sealing mechanism 6 and a detection mechanism 7, the method is characterized in that: the switch door mechanism 3 is installed at the top end of the switch shell 1, the one-way valve 2 is installed on the outer side of the switch shell 1, the fire extinguishing mechanism 4, the rotary pressing mechanism 5, the wiring sealing mechanism 6 and the detection mechanism 7 are all installed inside the switch shell 1, the fire extinguishing mechanism 4 is uniformly distributed inside the switch shell 1 to realize effective fire extinguishing, and the wiring sealing mechanism 6 and the detection mechanism 7 are installed on the periphery of the rotary pressing mechanism 5;

in an alternative implementation manner of the embodiment of the present invention, the door opening and closing mechanism 3 includes, in addition to the same components as those of the previous embodiment, a cover 301, a hollow disc 302, an air pressure detector a303, an air outlet 304, a top hemispherical rod 305, a handle 306; the cover 301 is rotatably arranged on the hollow disk 302, and when the cover 301 is tightly covered, the cover 301 and the hollow disk 302 are sealed by rubber arranged on the cover 301 and the hollow disk 302; the bottom end of the hollow disc 302 and the top end of the switch shell 1 are fixedly arranged, and the hollow disc 302 and the switch shell 1 are partially sealed; the inner space of the hollow disc 302 is stored with nitrogen, the air pressure detector A303 is fixedly arranged at the bottom end of the hollow disc 302, the air outlet 304 is communicated with the inner part of the hollow disc 302, and the nitrogen is discharged through the air outlet 304; the top hemispherical rod 305 is slidably arranged in a round hole 405 on the inner side of the hollow disc 302, a spring is arranged at the bottom end of the top hemispherical rod 305, and the handle 306 is fixedly arranged at the top end of the cover 301;

when the cover 301 is opened, the top hemispherical rod 305 extends out, and the air pressure detector A303 stops working; when the cover 301 is tightly covered, the cover can touch the top hemispherical round rod 305, when the top hemispherical round rod 305 is in a retraction state, the air pressure detector A303 is opened, the air pressure detector A303 starts to detect the air pressure in the switch shell 1, when the air pressure in the switch shell 1 is 0, the rotating pressing mechanism 5-the switch shell 1 rotates the pressing mechanism 5Pa, the control unit arranged in the switch shell 1 controls the air outlet 304 to be opened to release nitrogen, and when the air pressure in the switch shell 1 is in the switch shell 1, the wiring sealing mechanism 6-the one-way valve 2Pa, the control unit arranged in the switch shell 1 controls the air outlet 304 to be closed, so that the switch shell 1 is filled with inert gas, and further, the explosion caused by overhigh concentration of inflammable and explosive gas entering the switch shell 1 is prevented.

In an alternative embodiment of the present invention, the fire extinguishing mechanism 4 comprises, in addition to the same components as those of the previous embodiment, a combustible rod 401, a spring a402, a circular plate 403, a thin film 404, a circular hole 405; the inflammable rod 401 penetrates through the shell of the fire extinguishing mechanism 4 and is fixedly arranged in a circular hole 405 of a circular plate 403, a spring A402 is fixedly arranged inside the shell of the fire extinguishing mechanism 4, the top end of the circular plate 403 is fixedly connected with the bottom end of the spring A402, and the side surface of the circular plate 403 is provided with rubber which is sealed with the shell of the fire extinguishing mechanism 4; a plurality of films 404 are arranged on the shell of the fire extinguishing mechanism 4, a round hole 405 is arranged in each film 404, and fire extinguishing foam is filled in the shell of the fire extinguishing mechanism 4; when fire breaks out inside the switch, the fire ignites the flammable rod 401, the circular plate 403 is not blocked by the flammable rod 401, the circular plate 403 moves under the action of the spring a402, and the pressure of the circular plate 403 causes the fire extinguishing foam stored inside the fire extinguishing mechanism 4 to burst the film 404 and be sprayed out, so that the fire extinguishing effect is achieved.

In an optional implementation manner of the embodiment of the present invention, the rotary pressing mechanism 5 includes, in addition to the same components as those of the previous embodiment, a button 501, a track 502, a sliding grasping sleeve 503, a push rod 504, a spring B505, a disk 506, a telescopic sealing tube 507, an insulating column 508, and a conductive column 509; the button 501 is rotatably mounted at the top end of the sliding grab sleeve 503, the track 502 is fixedly mounted inside the switch shell 1, and the track 502 is provided with a long-strip-shaped groove and a triangular groove which are sequentially arranged in a circumferential array manner; the sliding grab sleeve 503 is rotatably installed inside the track 502, the button 501 is contacted with the sliding grab sleeve 503, the push rod 504 is rotatably installed inside the switch housing 1, the top of the spring B505 is fixedly installed at the bottom end of the push rod 504, the disc 506 is fixedly installed at the bottom end of the spring B505, the top end of the telescopic sealing tube 507 is fixedly installed at the bottom end of the disc 506, the insulating column 508 is fixedly installed inside the push rod 504, and the conductive column 509 is fixedly installed inside the insulating column 508;

pressing the button 501 causes the sliding grasping sleeve 503 to move downwards, then the sliding grasping sleeve 503 presses the push rod 504 to move downwards, the push rod 504 drives the insulating column 508 to move downwards, the long section part protruding from the push rod 504 is clamped in the triangular groove of the track 502, and the conductive column 509 is connected with the main circuit; when the push button 501 is pressed again, the push rod 504 rotates clockwise to the strip-shaped groove on the track 502 under the action of the triangular section of the track 502, the push rod 504 moves upwards along the strip-shaped groove on the track 502 under the action of the spring, the effect of rotating the insulating column 508 and moving the insulating column 508 upwards is achieved, the conductive column 509 is disconnected from the electrified main circuit, the telescopic sealing tube 507 is set, the up and down movement of the insulating column 508 can be unaffected, the effect of isolating external gas is achieved, and the generated electric spark is prevented from igniting the external combustible gas.

In an optional implementation manner of the embodiment of the present invention, the wiring sealing mechanism 6 includes, in addition to the same components as those in the previous embodiment, an insulating screw 601, a rotating locking sealing door 602, a cylindrical tube 603, a sealing housing 604, a conductive sheet 605, a hollow conductive pillar 606, a hemispherical conductive pillar 607; the insulating screw 601 is rotatably installed in a circular hole 405 of the sealing shell 604, the cylindrical tube 603 is fixedly installed on the outer side of the sealing shell 604, the rotary clamping sealing door 602 is fixedly installed on the outer side of the cylindrical tube 603, the conducting plate 605 is fixedly installed in the sealing shell 604, the hollow conducting column 606 is fixedly installed at the inner side end of the conducting plate 605, and the hemispherical conducting column 607 is slidably connected to the other end of the hollow conducting column 606; the electric wire penetrates through the rotary clamping sealing door 602, an electrified metal wire of the electric wire is connected to the conducting plate 605 and fixed through the insulating screw 601, the electric wire is communicated with the conducting plate 605, and the conducting plate 605 is communicated with the hemispherical conducting post 607 through the hollow conducting post 606; the rotating seizing seal door 602 is closed and clamps and seals the insulation sheath of the electric wire, so that a sealed space is formed inside, and a sealing effect is achieved.

In an optional implementation manner of the embodiment of the present invention, the detection mechanism 7 includes, except for the same components as those of the previous embodiment, an air tank 701, an air pressure detector B702, and a storage battery 703; the air storage tank 701 is fixedly arranged outside the sealed shell 604, the air pressure detector B702 is fixedly arranged on one side of the shell of the air storage tank 701, the storage battery 703 is arranged outside the sealed shell 604, and the storage battery 703 can be replaced by a rechargeable storage battery 703; when the button 501 is pressed down to close the switch, the insulation column 508 rotates and moves upwards under the action of the rotary pressing mechanism 5, and then the conductive column 509 in the insulation column 508 rotates and moves to touch the other group of hollow conductive columns 606 in the wiring sealing mechanism 6, so that the circuit is connected to open the gas storage tank 701, when the cover 301 is forgotten to be closed or is not opened for detection under other conditions, the double detection mechanism 7 is opened, and the safety is greatly improved.

The working principle is as follows: the switch is provided with a triple explosion-proof mechanism, an electric wire penetrates through the rotary clamping sealing door 602, an electrified metal wire of the electric wire is connected to the conducting plate 605 and fixed through the insulating screw 601, the electric wire is communicated with the conducting plate 605, and the conducting plate 605 is communicated with the hemispherical conducting post 607 through the hollow conducting post 606; the rotating seizing seal door 602 is closed and clamps and seals the insulation sheath of the electric wire, so that a sealed space is formed inside, and a sealing effect is achieved. Pressing the button 501 causes the sliding grasping sleeve 503 to move downwards, then the sliding grasping sleeve 503 presses the push rod 504 to move downwards, the push rod 504 drives the insulating column 508 to move downwards, the long section part protruding from the push rod 504 is clamped in the triangular groove of the track 502, and the conductive column 509 is connected with the main circuit; when the push button 501 is pressed again, the push rod 504 rotates clockwise to the strip-shaped groove on the track 502 under the action of the triangular section of the track 502, the push rod 504 moves upwards along the strip-shaped groove on the track 502 under the action of the spring, the effect of rotating the insulating column 508 and moving the insulating column 508 upwards is achieved, the conductive column 509 is disconnected from the electrified main circuit, the telescopic sealing tube 507 is set, the up and down movement of the insulating column 508 can be unaffected, the effect of isolating external gas is achieved, and the generated electric spark is prevented from igniting the external combustible gas. When the cover 301 is opened, the top hemispherical rod 305 extends out, and the air pressure detector A303 stops working; when the cover 301 is tightly covered, the cover can touch the top hemispherical round rod 305, when the top hemispherical round rod 305 is in a retraction state, the air pressure detector A303 is opened, the air pressure detector A303 starts to detect the air pressure in the switch shell 1, when the air pressure in the switch shell 1 is 0, the rotating pressing mechanism 5-the switch shell 1 rotates the pressing mechanism 5Pa, the control unit arranged in the switch shell 1 controls the air outlet 304 to be opened to release nitrogen, and when the air pressure in the switch shell 1 is in the switch shell 1, the wiring sealing mechanism 6-the one-way valve 2Pa, the control unit arranged in the switch shell 1 controls the air outlet 304 to be closed, so that the switch shell 1 is filled with inert gas, and further, the explosion caused by overhigh concentration of inflammable and explosive gas entering the switch shell 1 is prevented. When fire breaks out inside the switch, the fire ignites the flammable rod 401, the circular plate 403 is not blocked by the flammable rod 401, the circular plate 403 moves under the action of the spring a402, and the pressure of the circular plate 403 causes the fire extinguishing foam stored inside the fire extinguishing mechanism 4 to burst the film 404 and be sprayed out, so that the fire extinguishing effect is achieved.

Claims

1. The fire extinguishing explosion-proof switch comprises a switch shell (1), a one-way valve (2), a switch door mechanism (3), a fire extinguishing mechanism (4), a rotary pressing mechanism (5), a wiring sealing mechanism (6) and a detection mechanism (7), and is characterized in that the switch door mechanism (3) is installed at the top end of the switch shell (1), the one-way valve (2) is installed on the outer side of the switch shell (1), the fire extinguishing mechanism (4), the rotary pressing mechanism (5), the wiring sealing mechanism (6) and the detection mechanism (7) are installed inside the switch shell (1), the fire extinguishing mechanism (4) is uniformly distributed inside the switch shell (1) to effectively extinguish fire, and the wiring sealing mechanism (6) and the detection mechanism (7) are installed around the rotary pressing mechanism (5).

2. A fire-extinguishing explosion-proof switch according to claim 1, characterized in that the door opening and closing mechanism (3) comprises a cover (301), a hollow disc (302), a gas pressure detector A (303), a gas outlet (304), a top hemisphere round bar (305), a handle (306); the cover (301) is rotatably arranged on the hollow disk (302), and when the cover (301) is tightly covered, the cover (301) and the hollow disk (302) are sealed by rubber arranged on the cover (301) and the hollow disk (302); the bottom end of the hollow disc (302) and the top end of the switch shell (1) are fixedly arranged, and the hollow disc (302) and the switch shell (1) are partially sealed; the inner space of the hollow disc (302) is stored with nitrogen, the air pressure detector A (303) is fixedly arranged at the bottom end of the hollow disc (302), the air outlet (304) is communicated with the inner part of the hollow disc (302), and the nitrogen is discharged through the air outlet (304); top hemisphere pole (305) slidable mounting is in round hole (405) of cavity disc (302) inboard, bottom hemisphere pole (305) bottom is installed the spring, and handle (306) fixed mounting is on lid (301) top.

3. A fire-extinguishing explosion-proof switch according to claim 1, characterized in that the fire-extinguishing mechanism (4) comprises a flammable rod (401), a spring a (402), a circular plate (403), a membrane (404), a circular hole (405); the combustible rod (401) penetrates through the shell of the fire extinguishing mechanism (4) and is fixedly installed in a circular hole (405) of a circular plate (403), a spring A (402) is fixedly installed inside the shell of the fire extinguishing mechanism (4), the top end of the circular plate (403) is fixedly connected with the bottom end of the spring A (402), and rubber is arranged on the side surface of the circular plate (403) and is sealed with the shell of the fire extinguishing mechanism (4); a plurality of films (404) are arranged on the shell of the fire extinguishing mechanism (4), a round hole (405) is arranged in each film (404), and fire extinguishing foam is filled in the shell of the fire extinguishing mechanism (4).

4. The fire-extinguishing explosion-proof switch according to claim 1, characterized in that the rotary pressing mechanism (5) comprises a button (501), a track (502), a sliding grab sleeve (503), a push rod (504), a spring B (505), a disc (506), a telescopic sealing tube (507), an insulating column (508) and a conductive column (509); the button (501) is rotatably arranged at the top end of the sliding grab sleeve (503), the track (502) is fixedly arranged in the switch shell (1), the track (502) is provided with a long-strip-shaped groove and three grooves, and the long-strip-shaped groove and the triangular groove are sequentially arranged in a circumferential array manner; slip grab sleeve (503) rotate and install inside track (502), button (501) remain slip grab sleeve (503) contact, push rod (504) rotate and install inside switch housing (1), spring B (505) top fixed mounting is in push rod (504) bottom, disc (506) fixed mounting is in spring B (505) bottom, flexible sealed tube (507) top fixed mounting is in disc (506) bottom, insulating column (508) fixed mounting is inside push rod (504), it is inside to lead electrical pillar (509) fixed mounting in insulating column (508).

5. The fire-extinguishing explosion-proof switch according to claim 1, wherein the wiring sealing mechanism (6) comprises an insulating screw (601), a rotary clamping sealing door (602), a cylindrical tube (603), a sealing shell (604), a conducting plate (606), a hollow conducting column (606), a hemispherical conducting column (607); the insulating screw (601) is rotatably installed in a circular hole (405) of a sealing shell (604), the cylindrical tube (603) is fixedly installed on the outer side of the sealing shell (604), the rotary clamping sealing door (602) is fixedly installed on the outer side of the cylindrical tube (603), the conducting plate (605) is fixedly installed inside the sealing shell (604), the hollow conducting post (606) is fixedly installed at the inner side end of the conducting plate (605), and the hemispherical conducting post (607) is slidably connected to the other end of the hollow conducting post (606); the electric wire penetrates through the rotary clamping sealing door (602), an electrified metal wire of the electric wire is connected to the conducting plate (605), the conducting plate is fixed through the insulating screw (601), the electric wire is communicated with the conducting plate (605), and the conducting plate (605) is communicated with the hemispherical conducting post (607) through the hollow conducting post (606); the rotary clamping sealing door (602) is closed and clamps and seals the insulating outer skin of the electric wire, so that a sealing space is formed inside, and the sealing effect is achieved.

6. A fire-extinguishing explosion-proof switch according to claim 1, characterized in that the detection mechanism (7) comprises an air tank (701), a pneumatic pressure detector B (702), a storage battery (703); the air storage tank (701) is fixedly arranged on the outer side of the sealed shell (604), the air pressure detector B (702) is fixedly arranged on one side of the shell of the air storage tank (701), the storage battery (703) is arranged on the outer side of the sealed shell (604), and the storage battery (703) can be replaced by a rechargeable storage battery (703); when the button (501) is pressed down to close the switch, the insulating column (508) rotates and moves upwards under the action of the rotary pressing mechanism (5), then the conducting column (509) in the insulating column (508) rotates and moves to touch the other group of hollow conducting columns (606) in the wiring sealing mechanism (6), the circuit is connected to open the gas storage tank (701), when the cover (301) is forgotten to be closed or is not opened to be detected under other conditions, the double detection mechanism (7) is opened, and the safety is greatly improved.