Self-contained fire extinguishing device

Abstract

The application relates to the technical field of fire extinguishing devices, in particular to a self-generating fire extinguishing device. The technical scheme is as follows: a mounting bearing disc and a supporting shell are arranged, a fire extinguishing ball is arranged in the supporting shell, an adapter pipe is connected to the output end of the fire extinguishing ball, a smoke sensor is arranged on the outer end of the adapter pipe, a fixing ring is fixedly arranged on the side wall of the adapter pipe, the fixing ring is connected to the end of the supporting shell through a cross-shaped fixing frame, a magnet disc is sleeved on the side wall of the adapter pipe, a supporting ring is sleeved on the outer ring of the magnet disc, a magnet disc is slidably sleeved on the inner side of the supporting ring, and an air bag is arranged between the magnet disc and the magnet disc. The application is provided with a trigger and an extension pipe, when the magnet disc moves close to the magnet disc, the air bag is squeezed, the extension pipe and the trigger are driven at the same time, the extension pipe is first extended outward, finally the puncture knife pierces the sealing film, and the fire extinguishing is quickly completed.

Description

Technical Field

[0001] This application relates to the field of fire extinguishing device technology, and more particularly to spontaneous fire extinguishing devices. Background Technology

[0002] A fire extinguishing device, also known as a fire extinguisher, contains chemicals such as dry powder and is used to extinguish fires in emergencies. It is a common type of fire-fighting equipment installed in public places. Traditional fire extinguishers require manual operation. With technological advancements, self-activating fire extinguishing devices are now widely used in various locations. These devices automatically spray dry powder to extinguish fires. They are typically installed in fire-prone areas, usually with the nozzle pointing vertically downwards. Composed of a mounting plate, a fire extinguishing ball, and a smoke sensor, the fire extinguishing ball automatically opens its nozzle when the smoke sensor detects dense smoke, spraying dry powder for rapid fire suppression.

[0003] Existing self-extinguishing fire suppression systems have certain height requirements during installation to avoid obstructing pedestrian traffic in public places. However, the nozzle position is fixed, and placing the nozzle too high will affect the extinguishing speed. Furthermore, the nozzle triggering element cannot be reused and needs to be replaced after use, resulting in resource waste. Therefore, this application proposes a self-extinguishing fire suppression system. Summary of the Invention

[0004] The purpose of this application is to address the technical problems mentioned in the background art, such as the fact that an excessively high nozzle position affects the speed of fire extinguishing and that the triggering element of the nozzle cannot be reused, by proposing a self-extinguishing fire extinguishing device.

[0005] The technical solution of this application is as follows: a self-extinguishing fire extinguishing device, including a mounting plate and a supporting shell, wherein a fire extinguishing ball is disposed inside the supporting shell, and an adapter pipe connected to the output end of the fire extinguishing ball is also included. A smoke sensor is sleeved on the outer end of the adapter pipe, and a fixing ring is fixedly sleeved on the side wall of the adapter pipe. The fixing ring is connected to the end of the supporting shell through a cross fixing bracket. An electromagnet disc is sleeved on the side wall of the adapter pipe, and a support ring is sleeved on the outer ring of the electromagnet disc. A magnetic disc located inside the support ring is slidably sleeved on the side wall of the adapter pipe, and an airbag is disposed between the electromagnet disc and the magnetic disc.

[0006] An external connecting pipe is inserted into the output end of the adapter pipe, and an extension pipe is provided inside the external connecting pipe. The extension pipe is extended by the airbag. A fire extinguishing trigger is provided on the inner wall of the adapter pipe through a magnetic disc. When the extension pipe is extended, the trigger triggers the output end of the fire extinguishing ball to open.

[0007] Preferably, the airbag and the adapter pipe are connected by several exhaust pipes, each exhaust pipe is equipped with a one-way solenoid valve, and the side wall of the airbag is connected to an inflation pipe that passes through the fixing ring, the inflation pipe being equipped with a one-way valve.

[0008] Preferably, the device also includes a battery and a controller installed on the lower surface of the mounting plate. The controller, one-way solenoid valve, smoke sensor, and electromagnet are all electrically connected to the battery. The output of the smoke sensor is electrically connected to the input of the controller. The output of the controller is electrically connected to the electromagnet and the one-way solenoid valve. When the electromagnet is energized, it attracts the magnetic disc and compresses the airbag to drive the extension tube. Once a fire occurs, the smoke sensor will be immediately detected by the dense smoke and send a signal to the controller. The controller will then quickly open the one-way solenoid valve and energize the electromagnet.

[0009] Preferably, the trigger includes a drive magnetic ring connected to the inner wall of the transfer tube, and one end of the drive magnetic ring is fixedly connected to a piercing knife;

[0010] The output end of the fire extinguishing ball is fixedly connected to an output pipe, which is threadedly connected to an adapter pipe. A sealing film is embedded in the inner wall of the output pipe. The piercing knife is half-circular and its diameter is smaller than that of the sealing film.

[0011] Preferably, a limiting ring is embedded in the inner wall of the end of the external connecting tube away from the magnet disk, and the extension tube includes a first piston ring slidably disposed on the inner wall of the external connecting tube. One end of the first piston ring is fixedly connected to an extension tube that slidably passes through the limiting ring, and a sealing diaphragm is embedded in the inner ring of the extension tube.

[0012] Preferably, a horizontally arranged support rod is fixedly connected to the inner wall of the external connecting pipe, and a guide auxiliary rod penetrating the sealing diaphragm is fixedly connected to one end of the support rod. A second piston ring is embedded in the inner ring of the sealing diaphragm, and the second piston ring slides in contact with the side wall of the guide auxiliary rod.

[0013] Preferably, a connecting block is fixedly connected to the outer end of the guide auxiliary rod, and a plurality of piercing needles are connected to the side of the connecting block near the sealing membrane plate. When the sealing membrane plate slides to the end of the outer connecting tube, the piercing needles contact the sealing membrane plate and pierce the sealing membrane plate.

[0014] Preferably, the outer ring of the output end of the extension tube is connected to a plurality of first spray tubes, and the output ports of the first spray tubes are inclined outward. The spray angle of the first spray tube and the bottom end of the extension tube form an angle greater than 90 degrees, in order to increase the range of dry powder spraying. The output end of the extension tube is vertically connected to a second spray tube.

[0015] Preferably, the outer ring of the support housing near the mounting plate is fixedly fitted with a positioning ring, and the outer ring of the positioning ring is connected with a plurality of locking protrusions. The locking protrusions are fixed to the mounting plate by nuts. The side wall of the locking protrusion is connected with a locking block. The lower surface of the mounting plate is fixedly connected with a plurality of retaining sleeves, and the locking blocks are inserted into the retaining sleeves.

[0016] Compared with the prior art, this application has the following beneficial technical effects:

[0017] This application sets up an airbag between the electromagnet disc and the magnetic disc. When the smoke sensor detects dense smoke, it controls the electromagnet disc to be energized and the one-way solenoid valve to open through the controller. Under the action of magnetic attraction, the magnetic disc moves closer to the electromagnet disc, squeezing the airbag. By setting an extension tube in the external connecting pipe, the air source in the airbag enters the transfer tube through the exhaust pipe, thereby squeezing the first piston ring and the sealing diaphragm away from the fire extinguishing ball and sliding to the end of the external connecting pipe, so that the extension tube extends to the outside of the external connecting pipe. When the extension tube is fully extended, the piercing needle pierces the sealing diaphragm, thereby shortening the distance of powder spraying and extinguishing and improving the extinguishing efficiency.

[0018] By setting a trigger inside the transfer tube, when the magnetic disc moves close to the electromagnet disc, it drives the transmission magnetic ring to move close to the sealing film, causing the piercing knife to pierce the sealing film and prompting the fire extinguishing ball to complete the powder extinguishing; after the fire extinguishing ball is used up, a new fire extinguishing ball can be directly replaced, and the airbag can be inflated to return the trigger to its position, so as to achieve reuse;

[0019] In summary, this application, by setting up a trigger and an extension tube, compresses the airbag when the magnetic disc moves close to the electromagnet disc, simultaneously driving the extension tube and the trigger, causing the extension tube to extend outward first, and finally causing the piercing knife to pierce the sealing membrane, thus quickly completing the fire extinguishing. Attached Figure Description

[0020] Figure 1 It is a 3D diagram of a self-extinguishing fire suppression system;

[0021] Figure 2 This is a schematic diagram of the connection structure between the support ring and the electromagnet disk in this application;

[0022] Figure 3 This is a cross-sectional view of the support ring and the external connecting pipe in this application;

[0023] Figure 4 This is a schematic diagram of the connection between the output pipe and the adapter pipe in this application;

[0024] Figure 5 This is a structural schematic diagram of the extension pipe fitting in this application;

[0025] Figure 6 yes Figure 4 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 yes Figure 1 Enlarged structural diagram at point B;

[0027] Figure 8 yes Figure 3 Enlarged structural diagram at point C;

[0028] Figure 9 This is a control principle module diagram of this application.

[0029] Reference numerals: 1. Mounting bearing plate; 2. Support housing; 3. Positioning ring; 31. Locking protrusion; 32. Sleeve; 33. Locking block;

[0030] 4. Cross-shaped fixing bracket; 5. Fixing ring;

[0031] 6. Extension fitting; 601. First piston ring; 602. Extension tube; 603. Sealing diaphragm; 604. Second piston ring;

[0032] 7. Smoke sensor; 8. Battery; 9. Controller; 10. Fire extinguishing ball; 101. Output tube; 102. Sealing film;

[0033] 11. Support ring; 12. Electromagnetic disc; 13. Magnetic disc; 14. Airbag; 141. Inflation tube; 142. Exhaust tube;

[0034] 15. Transfer pipe; 16. Trigger; 161. Drive magnetic ring; 162. Piercing knife;

[0035] 17. Support rod; 18. Guide auxiliary rod; 181. Connecting block; 182. Piercing needle; 19. First spray pipe; 21. External connecting pipe; 22. Limiting ring; 23. Second spray pipe. Detailed Implementation

[0036] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0038] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] Example

[0042] like Figures 1-4 , Figure 9As shown, the self-extinguishing fire extinguishing device proposed in this application includes a mounting plate 1 and a supporting shell 2. The mounting plate 1 and the supporting shell 2 are detachably installed. A positioning ring 3 is fixedly fitted on the outer ring of the supporting shell 2 near the mounting plate 1. Several locking protrusions 31 are connected to the outer ring of the positioning ring 3. The locking protrusions 31 are fixed to the mounting plate 1 by nuts. The side wall of the locking protrusions 31 is connected to a locking block 33. Several locking sleeves 32 are fixedly connected to the lower surface of the mounting plate 1. The locking blocks 33 are inserted into the locking sleeves 32. This installation method can provide vertical support for the supporting shell 2, and the supporting shell 2 does not need to be supported when tightening the nuts, making installation more convenient. A fire extinguishing ball 10 is installed inside the supporting shell 2, and an adapter pipe 15 is connected to the output end of the fire extinguishing ball 10. A smoke sensor 7 is fitted on the outer end of the adapter pipe 15. When the smoke sensor 7 detects dense smoke, it will be sensed immediately. A fixing ring 5 is fixedly sleeved on the side wall of the adapter pipe 15. The fixing ring 5 is connected to the end of the support housing 2 through a cross fixing bracket 4, which supports and fixes the adapter pipe 15. An electromagnet disk 12 is fixedly sleeved on the side wall of the adapter pipe 15. The electromagnet disk 12 is fixed to the cross fixing bracket 4 through a connecting post. A support ring 11 is fixedly sleeved on the outer ring of the electromagnet disk 12. A magnet disk 13 located inside the support ring 11 is slidably sleeved on the side wall of the adapter pipe 15. A limit ring is fixedly connected to the inner wall of the end of the support ring 11 away from the electromagnet disk 12 to limit the magnet disk 13 and prevent the magnet disk 13 from detaching from the support ring 11. An airbag 14 is provided between the electromagnet disk 12 and the magnet disk 13. The airbag 14 is made of polyimide, has high temperature resistance, and can be repeatedly inflated and used. When no fire occurs, the electromagnet disk 12 is de-energized and does not have a magnetic attraction function. The magnet disk 13 maintains a certain distance from the electromagnet disk 12 to accommodate the inflated airbag 14.

[0043] This implementation example Figure 6 , Figure 7 , Figure 8In this device, an external connecting pipe 21 is inserted into the output end of the adapter pipe 15. The adapter pipe 15 and the external connecting pipe 21 are threaded together, providing a stable connection and facilitating disassembly and replacement. An extension pipe 6 is provided inside the external connecting pipe 21. The extension pipe 6 is extended by the airbag 14. A fire extinguishing trigger 16, driven by a magnetic disc 13, is provided on the inner wall of the adapter pipe 15. The fire extinguishing trigger 16 is located inside the magnetic disc 13 and moves synchronously with the magnetic disc 13. When the extension pipe 6 is extended, the trigger 16 moves synchronously with the magnetic disc 13 towards the electromagnet disc 12, triggering the output end of the fire extinguishing ball 10 to open. The trigger 16 includes a drive magnetic ring 161 connected to the inner wall of the adapter pipe 15. One end of the drive magnetic ring 161 is fixedly connected to a piercing knife 162. The output end of the fire extinguishing ball 10 is fixedly connected to an output pipe 101. The output pipe 101 is threadedly connected to the adapter pipe 15. A sealing film 102 is embedded in the inner wall of the output pipe 101. The piercing knife 162 is half an arc shape, and the diameter of the piercing knife 162 is slightly smaller than the diameter of the sealing film 102, so that it can pierce the sealing film 102 smoothly without causing the sealing film 102 to fall off, thus avoiding the sealing film 102 from causing blockage in the pipe.

[0044] Furthermore, the airbag 14 and the adapter pipe 15 are connected by several exhaust pipes 142. The exhaust pipes 142 are equipped with one-way solenoid valves, so that the gas in the airbag 14 can only enter the adapter pipe 15 in one direction. The side wall of the airbag 14 is connected to an inflation pipe 141 that passes through the fixing ring 5. The inflation pipe 141 is equipped with a one-way valve. When the one-way valve is opened, gas can be injected into the airbag 14. When the electromagnet disc 12 is de-energized, the magnet disc 13 and the trigger 16 return to their original positions. It also includes a storage battery 8 and a controller 9 installed on the lower surface of the mounting plate 1. A high-temperature resistant protective cover can be installed on the outside of the storage battery 8 and the controller 9 (this is prior art and is not shown in the figure). The controller 9, the one-way solenoid valve, the smoke sensor 7, and the electromagnet plate 12 are all electrically connected to the storage battery 8 (the storage battery 8 is electrically connected to an external power source, but it also has a power storage function, so it can still supply power even if there is a fire and a power outage). The output end of the smoke sensor 7 is electrically connected to the input end of the controller 9. The output end of the controller 9 is electrically connected to the electromagnet plate 12 and the one-way solenoid valve. When the electromagnet plate 12 is energized, it attracts the magnetic plate 13, squeezing the airbag 14 to drive the extension tube 6. In the event of a fire, the smoke sensor 7 will be immediately detected by the dense smoke and send a signal to the controller 9. The controller 9 will then quickly open the one-way solenoid valve and energize the electromagnet plate 12.

[0045] Please refer to [the document]. Figure 5As shown, a limiting ring 22 is embedded in the inner wall of the end of the external connecting pipe 21 away from the magnet disk 13. The extension pipe 6 includes a first piston ring 601 slidably disposed on the inner wall of the external connecting pipe 21. One end of the first piston ring 601 is fixedly connected to an extension pipe 602 that slides through the limiting ring 22. The outer ring of the output end of the extension pipe 602 is connected to several first spray pipes 19, and the output port of the first spray pipe 19 is inclined outward. The angle formed by the spray angle of the first spray pipe 19 and the bottom end of the extension pipe 602 is greater than 90 degrees, and can be selected as 120 degrees, in order to improve the range of dry powder spraying. The output end of the extension pipe 602 is vertically connected to a second spray pipe 23 to complete multi-directional spraying. The inner end of the extension tube 602 is fitted with a sealing diaphragm plate 603. The inner wall of the outer connecting tube 21 is fixedly connected with a horizontally arranged support rod 17. One end of the support rod 17 is fixedly connected with a guide auxiliary rod 18 that penetrates the sealing diaphragm plate 603. The inner ring of the sealing diaphragm plate 603 is fitted with a second piston ring 604. The second piston ring 604 slides in contact with the side wall of the guide auxiliary rod 18, so that the adapter tube 15, the first piston ring 601, and the sealing diaphragm plate 603 form a sealed space, which can smoothly push the extension tube 602 under air pressure. The outer end of the guide auxiliary rod 18 is fixedly connected with a connecting block 181. The side of the connecting block 181 near the sealing diaphragm plate 603 is connected with several piercing needles 182. When the sealing diaphragm plate 603 slides to the end of the outer connecting tube 21, the piercing needles 182 contact the sealing diaphragm plate 603 and pierce the sealing diaphragm plate 603. It is worth noting that the external connecting pipe 21, extension pipe 602, first spray pipe 19, second spray pipe 23 and other installation connectors in this application are all made of high-temperature resistant metal materials, preferably stainless steel.

[0046] The specific working principle is as follows: The device is installed in a fire-prone area. During installation, the fire extinguishing ball 10 is first secured inside the support housing 2, and the output pipe 101 is threaded into the adapter pipe 15. Then, the support housing 2 is fixed to one end of the mounting plate 1 (the specific connection method has been explained above). Finally, the mounting plate 1 is fixed to the external wall top or other mounting support mechanism. When a fire occurs, dense smoke will fill the environment. The smoke sensor 7 will detect the dense smoke immediately. Upon detection, the smoke sensor 7 will send a signal to the controller 9. The controller 9 will energize the electromagnet plate 12 and the one-way solenoid valve on the exhaust pipe 142, opening the exhaust pipe 142. After being energized, the electromagnet plate 12 will generate a magnetic attraction force on the magnet plate 13, causing the magnet plate 13 to move closer to the electromagnet plate 12, compressing the airbag 14 and rapidly squeezing the gas inside the airbag 14 into the adapter pipe 15, thereby... The first piston ring 601 and the sealing membrane 603 are pushed outward and moved, causing the extension tube 602 to extend and slide outward rapidly. When the sealing membrane 603 slides to the end of the outer connecting tube 21, the piercing needle 182 will pierce the sealing membrane 603. As the magnet disc 13 moves closer to the electromagnet disc 12, it will drive the transmission magnetic ring 161 to move closer to the sealing membrane 102. When the magnet disc 13 approaches the electromagnet disc 12, the piercing knife 162 will pierce the sealing membrane 102, thereby triggering the fire extinguishing ball 10 to spray powder for fire extinguishing. When the fire extinguishing ball 10 is used up, it can be replaced. When replacing it, unscrew the fixing nut between the locking protrusion 31 and the mounting bearing plate 1, then rotate the support housing 2 clockwise by a certain angle to make the locking block 33 disengage from the sleeve 32. Remove the support housing 2, remove the fire extinguishing ball 10 and replace it with a new fire extinguishing ball 10. At the same time, unscrew the external connecting pipe 21 and replace it with a new external connecting pipe 21. The extension pipe 6 is replaced accordingly. The trigger 16 inside the adapter pipe 15 can be reused (before replacing the fire extinguishing ball 10, the external connecting pipe 21, and the extension pipe 6, open the one-way valve and fill the air bag 14 with gas. When the electromagnet plate 12 is de-energized, the magnet plate 13 and the trigger 16 return to their positions, and the dry powder inside the adapter pipe 15 is cleaned). After the replacement is completed, the support housing 2 is reinstalled at the bottom of the mounting plate 1. During installation, the locking block 33 is inserted into the sleeve 32 and the nut is tightened. The locking block 33 and the sleeve 32 are designed to facilitate the alignment of the nut with the screw hole on the mounting plate 1 and to provide vertical support for the support housing 2.

[0047] The above specific embodiments are merely preferred embodiments of this application. Based on the technical solutions of this application and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments. The above specific embodiments are merely explanations of this application and are not limitations on this application.

Claims

1. A self-extinguishing fire extinguishing device, comprising a mounting plate (1) and a supporting shell (2), wherein a fire extinguishing ball (10) is disposed within the supporting shell (2), characterized in that: It also includes an adapter pipe (15) connected to the output end of the fire extinguishing ball (10). A smoke sensor (7) is fitted on the outer end of the adapter pipe (15). A fixing ring (5) is fixedly fitted on the side wall of the adapter pipe (15). The fixing ring (5) is connected to the end of the support housing (2) through a cross fixing bracket (4). An electromagnet disc (12) is fitted on the side wall of the adapter pipe (15). A support ring (11) is fitted on the outer ring of the electromagnet disc (12). A magnet disc (13) located inside the support ring (11) is slidably fitted on the side wall of the adapter pipe (15). An airbag (14) is provided between the electromagnet disc (12) and the magnet disc (13). The output end of the adapter pipe (15) is connected to an external connecting pipe (21), and an extension pipe (6) is provided inside the external connecting pipe (21). The extension pipe (6) is extended by the airbag (14). The inner wall of the adapter pipe (15) is provided with a fire extinguishing trigger (16) driven by a magnetic disc (13). When the extension pipe (6) is extended, the trigger (16) triggers the output end of the fire extinguishing ball (10) to open. The airbag (14) and the adapter pipe (15) are connected by several exhaust pipes (142). A one-way solenoid valve is provided on the exhaust pipe (142). An inflation pipe (141) that passes through the fixing ring (5) is connected to the side wall of the airbag (14). A one-way valve is provided on the inflation pipe (141). It also includes a storage battery (8) and a controller (9) installed on the lower surface of the mounting plate (1). The controller (9), the one-way solenoid valve, the smoke sensor (7), and the electromagnet plate (12) are all electrically connected to the storage battery (8). The output end of the smoke sensor (7) is electrically connected to the input end of the controller (9). The output end of the controller (9) is electrically connected to the electromagnet plate (12) and the one-way solenoid valve. When the electromagnet plate (12) is energized, it attracts the magnet plate (13) and squeezes the airbag (14) to drive the extension tube (6). The trigger (16) includes a drive magnetic ring (161) connected to the inner wall of the adapter (15), and a piercing knife (162) is fixedly connected to one end of the drive magnetic ring (161). The output end of the fire extinguishing ball (10) is fixedly connected to an output pipe (101), the output pipe (101) is threadedly connected to an adapter pipe (15), the inner wall of the output pipe (101) is embedded with a sealing film (102), the piercing knife (162) is half an arc shape, and the diameter of the piercing knife (162) is smaller than the diameter of the sealing film (102).

2. The self-extinguishing fire extinguishing device according to claim 1, characterized in that, The outer connecting tube (21) has a limiting ring (22) embedded in the inner wall of the end away from the magnet disk (13). The extension tube (6) includes a first piston ring (601) slidably disposed on the inner wall of the outer connecting tube (21). One end of the first piston ring (601) is fixedly connected to an extension tube (602) that slides through the limiting ring (22). The inner ring of the extension tube (602) is embedded with a sealing diaphragm plate (603).

3. The self-extinguishing fire extinguishing device according to claim 2, characterized in that, The inner wall of the external connecting pipe (21) is fixedly connected to a horizontally arranged support rod (17). One end of the support rod (17) is fixedly connected to a guide auxiliary rod (18) that penetrates the sealing diaphragm plate (603). The inner ring of the sealing diaphragm plate (603) is embedded with a second piston ring (604). The second piston ring (604) slides in contact with the side wall of the guide auxiliary rod (18).

4. The self-extinguishing fire extinguishing device according to claim 3, characterized in that, The outer end of the guide auxiliary rod (18) is fixedly connected to a connecting block (181), and a number of piercing needles (182) are connected to the side of the connecting block (181) near the sealing membrane plate (603).

5. The self-extinguishing fire extinguishing device according to claim 2, characterized in that, The outer ring of the output end of the extension tube (602) is connected to a plurality of first injection tubes (19), and the output ports of the first injection tubes (19) are inclined outward, and the output end of the extension tube (602) is vertically connected to a second injection tube (23).

6. The self-extinguishing fire extinguishing device according to claim 1, characterized in that, The outer ring of the support housing (2) near the mounting plate (1) is fixedly fitted with a positioning ring (3). The outer ring of the positioning ring (3) is connected with several locking protrusions (31). The locking protrusions (31) are fixed to the mounting plate (1) by nuts. The side wall of the locking protrusions (31) is connected with a locking block (33). The lower surface of the mounting plate (1) is fixedly connected with several retainers (32). The locking block (33) fits into the retainer (32).

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