Quick dismounting type gas storage fire extinguisher

Abstract

This invention relates to the field of fire-fighting equipment technology, and more particularly to a quick-assembly type gas-storage fire extinguisher. It includes a main extinguisher cylinder body, with a mounting cavity on the lower side of the main cylinder body to accommodate a gas-storage cylinder. A connecting end cap for connecting the gas-storage cylinder is connected to the mounting cavity via a vertical sliding mechanism. The main extinguisher cylinder body is equipped with a piercing inflation needle for puncturing the gas-storage cylinder's sealing membrane and allowing gas to flow in. The main extinguisher cylinder body also has a locking component for locking the circumferential rotational freedom of the gas-storage cylinder. This fire extinguisher adopts a plug-in gas-storage cylinder design; after screwing in the connecting end cap and pressing down on the main cylinder body, the sealing membrane is automatically punctured, allowing for inflation without tools. The bottom of the gas-storage cylinder is exposed for easy installation; when retracted, it is flush with the bottom surface of the cylinder body. When replacing an empty cylinder, unscrewing it in the reverse direction and installing a new cylinder quickly restores its standby status, significantly improving the convenience of maintenance and emergency replacement.

Description

Technical Field

[0001] This invention relates to the field of fire-fighting equipment technology, and in particular to a quick-assembly type gas-storage fire extinguisher. Background Technology

[0002] In the field of fire emergency equipment, pressurized and gas-storage fire extinguishers are two mainstream products. Among them, gas-storage fire extinguishers (also known as "external pressurized fire extinguishers") pressurize the extinguishing agent container through an independent high-pressure driven gas cylinder (usually nitrogen or compressed air). They have advantages such as long spray time, stable pressure, and suitability for large-capacity fire extinguishing devices, and are widely used in industrial sites, ship engine rooms, and large public buildings.

[0003] However, traditional gas-fired fire extinguishers typically use fixed welded or bolted flange connections for their high-pressure cylinders, making installation and replacement cumbersome. This requires tightening multiple bolts with wrenches and additional connections to high-pressure pipelines and sealing joints. During emergency maintenance or operational readiness checks, cylinder disassembly and assembly are time-consuming, complex, and demand highly skilled personnel. Inadequate sealing can also lead to leaks, affecting operational reliability. Especially in confined environments such as the field, on ships, or at high altitudes, the lack of tools or limited space further exacerbates the operational difficulties, making it difficult for traditional gas-fired fire extinguishers to meet the practical needs for rapid response and convenient maintenance.

[0004] Therefore, there is an urgent need to provide a gas-storage fire extinguisher that is simple in structure, quick to assemble and disassemble, and reliably sealed, in order to solve the technical problems of low gas cylinder replacement efficiency, tool dependence and easy leakage in the existing technology. Summary of the Invention

[0005] To overcome the drawbacks of traditional gas-storage fire extinguishers, such as cumbersome disassembly and assembly of gas cylinders, reliance on tools, and susceptibility to leakage, this invention provides a quick-assembly and disassembly type gas-storage fire extinguisher.

[0006] A quick-assembly type gas-storage fire extinguisher includes a main cylinder body, an installation cavity for accommodating a gas cylinder on the lower side of the main cylinder body, a connecting end cap for connecting the gas cylinder connected to the installation cavity via a vertical sliding mechanism, a puncture-type inflation needle for piercing the sealing film of the gas cylinder and introducing gas on the main cylinder body, and a locking component for locking the circumferential rotational freedom of the gas cylinder and a vertical locking component for locking the vertical position of the gas cylinder on the main cylinder body.

[0007] As a further preferred option, the top of the main body of the fire extinguisher is equipped with a main control valve, which has a spray handle and a nozzle interface for connecting the nozzle. The main control valve is connected downward to a siphon tube that extends into the bottom of the main body of the fire extinguisher.

[0008] As a further preferred embodiment, the installation cavity is located on the lower left side of the main body of the fire extinguisher and is not connected to the inner cavity of the main body of the fire extinguisher; the main body of the fire extinguisher has an installation platform on the top side of the installation cavity, and a connecting end cap is vertically slidably connected to the upper part of the installation cavity. The top surface of the connecting end cap is connected to the inner side of the installation platform through a main sealing bellows and a first spring, which is located inside the main sealing bellows; the connecting end cap is T-shaped, and its top disc presses against the receiving step on the upper part of the main body of the fire extinguisher; the lower cylinder of the connecting end cap has an internal thread, and the outer side of the gas cylinder opening has an external thread, and the two are threadedly connected; a sealing membrane is provided at the top opening of the gas cylinder.

[0009] As a further preferred option, a hollow puncture-type inflation needle is fixed to the installation platform. The needle has a puncture cone at its bottom and an internal air-conducting chamber. The lower part of the puncture-type inflation needle is located inside the main sealing bellows, and its lower sidewall has evenly distributed first through holes along its circumference, connecting the main sealing bellows to the inside of the puncture-type inflation needle. The upper part of the puncture-type inflation needle has a one-way valve at the needle tip. A second through hole is opened in the center of the top disc of the connecting end cap for the puncture-type inflation needle to pass through. A main cylinder connection hole is opened on the installation platform, connecting the main sealing bellows to the inner cavity of the fire extinguisher's main cylinder. An internal one-way valve is installed in the main cylinder connection hole.

[0010] As a further preferred embodiment, the locking assembly includes a locking mechanism housing fixedly attached to the upper right side of the main body of the fire extinguisher near the mounting cavity. A locking sealing bellows is located on the left side of the locking mechanism housing. A pneumatically driven push rod is slidably connected horizontally inside the locking mechanism housing. The left end of the pneumatically driven push rod is fixedly connected to the inner side of the movable end of the locking sealing bellows, and the right end is equipped with a driving vertical plate. A second spring connects the inner side of the movable end of the locking sealing bellows to the inner side of the right wall of the locking mechanism housing. A locking engagement tooth block is located on the outer side of the movable end of the locking sealing bellows. An anti-rotation locking tooth ring is located near the mouth of the gas cylinder, and the locking engagement tooth block engages with the anti-rotation locking tooth ring. An air inlet for connecting the interior of the housing to the inner cavity of the main body of the fire extinguisher is located on the right wall of the locking mechanism housing.

[0011] As a further preferred embodiment, the vertical locking assembly includes an end cover lifting guide rod fixedly attached to the top surface of the connecting end cover. The end cover lifting guide rod slides up and down within the mounting platform and is slidably sealed to it. A locking mechanism mounting seat is fixedly attached to the mounting platform. A locking tongue sliding seat is slidably connected within the locking mechanism mounting seat. An end cover locking tongue is slidably connected horizontally within the locking tongue sliding seat. The end cover locking tongue and the locking tongue sliding seat are connected by a locking tongue reset spring. A slot is provided on the end cover lifting guide rod, and the end cover locking tongue engages with the slot for locking.

[0012] As a further preferred option, a vertically arranged linkage release spring is fixed to the locking mechanism mounting base. The lower end of the linkage release spring is provided with a push rod avoidance slope. Initially, the push rod avoidance slope is located to the left of the driving vertical plate of the pneumatic drive push rod. A square hole is opened at the upper part of the linkage release spring, and the square hole is locked in the right part of the lock tongue sliding seat. In the initial state, the end cover lifting guide rod abuts against the end cover lock tongue, causing it to retract into the lock tongue sliding seat, and the lock tongue reset spring is in a compressed state.

[0013] As a further preferred embodiment, a first spring connecting the top surface of the connecting end cap to the inner side of the mounting platform provides a downward restoring force; a second spring connecting the inner side of the movable end of the locking sealing bellows to the inner side of the right wall of the locking mechanism housing provides a rightward restoring force.

[0014] The beneficial effects of this invention are as follows: This fire extinguisher features a cartridge-type gas cylinder design. By screwing the gas cylinder into the connecting end cap and then pressing down on the main cylinder, the sealing membrane is automatically punctured and the inflation channel is opened, requiring no additional tools or complicated operations. The exposed bottom of the gas cylinder facilitates installation and positioning, while when fully retracted, it is flush with the bottom of the cylinder body, without affecting the stability of the entire unit. When replacing an empty cylinder, simply unscrew it in the reverse direction and install a new cylinder to quickly restore its standby status, significantly improving the convenience of daily maintenance and emergency replacement.

[0015] This fire extinguisher, through the coordinated action of the locking and vertical locking components, achieves circumferential rotational freedom and vertical position locking of the gas cylinder during inflation and dispensing. The locking component uses the main cylinder's own air pressure to drive the locking engagement teeth to engage with the anti-rotation locking ring, preventing the gas cylinder from loosening and leaking due to vibration or misoperation. The vertical locking component automatically locks the guide rod at the moment of puncture, ensuring that the gas cylinder remains fully retracted, providing double protection for the safety and sealing reliability of the high-pressure gas release process.

[0016] After the fire is extinguished, as the gas pressure inside the main cylinder decreases, the locking component automatically releases its circumferential lock. At the same time, the gas pressure-driven push rod reset process triggers the vertical locking component to unlock. The first spring pushes the connecting end cap and the empty gas cylinder downwards, exposing the bottom of the gas cylinder again, creating a clear and unambiguous visual prompt that "replacement is required." This mechanical linkage reset mechanism eliminates the need for additional detection components or manual judgment, simplifying the maintenance process and effectively avoiding the problem of insufficient power during the next use due to forgetting to replace the gas cylinder. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention.

[0019] Figure 3This is a three-dimensional structural diagram of the components of the present invention, including the puncture-type inflatable needle, the one-way valve at the needle tip, and the first spring.

[0020] Figure 4 This is a three-dimensional structural diagram of the puncture-type inflatable needle and the one-way valve at the needle tip of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the locking mechanism housing, pneumatic drive push rod, and anti-rotation locking tooth ring of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the locking mechanism housing, the second spring, and the locking engagement teeth of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the end cap lifting guide rod, locking mechanism mounting base, and linkage release spring of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the components of the present invention, including the end cap latch, the latch reset spring, and the latch sliding seat.

[0025] Wherein: 101-Fire extinguisher main cylinder body, 102-Spray nozzle interface, 103-Spray handle, 104-Mounting cavity, 105-Gas cylinder, 106-Piercing inflation needle, 107-Connecting end cap, 108-Main sealing bellows, 109-First spring, 110-Inner needle air guiding cavity, 111-Inner cylinder one-way valve, 112-Needle top one-way valve, 113-Main control valve, 114-Main cylinder connecting hole, 115-Receiving step, 116-Mounting plate Platform, 201-Anti-rotation locking tooth ring, 202-Locking mechanism housing, 203-Pneumatic drive push rod, 204-Locking sealing bellows, 205-Locking engagement tooth block, 206-Second spring, 207-Locking cavity air inlet, 301-End cover lifting guide rod, 302-Locking mechanism mounting base, 303-Linkage release spring, 304-Push rod avoidance slope, 305-Lock tongue sliding seat, 306-Lock tongue reset spring, 307-End cover lock tongue. Detailed Implementation

[0026] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "set," "install," "connect," and "link" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0027] Example 1: A quick-assembly type gas-filled fire extinguisher, such as... Figures 1-5 As shown, the extinguisher includes a main cylinder 101 with a main control valve 113 at its top. The main control valve 113 has a spray handle 103 and a spray nozzle interface 102 for connecting to the spray nozzle. The main control valve 113 is connected downward to a siphon tube that extends into the bottom of the main cylinder 101.

[0028] The lower left side of the main cylinder body 101 of the fire extinguisher is provided with a mounting cavity 104 for accommodating a gas storage cylinder 105. This mounting cavity 104 is not connected to the inner cavity of the main cylinder body 101. The main cylinder body 101 of the fire extinguisher is provided with a mounting platform 116 on the top side of the mounting cavity 104, which serves as the top plate of the mounting cavity 104. A connecting end cap 107 is vertically slidably connected to the upper part of the mounting cavity 104. Its top surface is connected to the inner side of the mounting platform 116 through a main sealing bellows 108 and a first spring 109. The first spring 109 is located inside the main sealing bellows 108 and is used to provide a downward restoring force.

[0029] The connecting end cap 107 is T-shaped, with its top disc pressing against the receiving step 115 on the upper part of the main body of the fire extinguisher 101, forming a lower limit limit. The lower cylinder of the connecting end cap 107 has internal threads, and the outer side of the gas cylinder 105 has external threads, allowing for a detachable connection between the two. A sealing film is provided at the top opening of the gas cylinder 105.

[0030] A hollow puncture-type inflation needle 106 is fixedly connected to the mounting platform 116. Its bottom end has a puncture cone tip, and its interior contains an internal air guiding chamber 110. The lower part of the puncture-type inflation needle 106 is located inside the main sealing bellows 108, and its lower end sidewall has evenly distributed first through holes along its circumference, allowing communication between the main sealing bellows 108 and the interior of the puncture-type inflation needle 106. The upper part of the puncture-type inflation needle 106 has a needle-top one-way valve 112 for controlling the one-way flow of gas into the fire extinguisher main cylinder 101. A second through hole for the puncture-type inflation needle 106 to pass through is opened in the center of the top disc of the connecting end cap 107.

[0031] The mounting platform 116 has a main cylinder connection hole 114, which connects the main sealing bellows 108 to the inner cavity of the main cylinder body 101 of the fire extinguisher. An internal one-way valve 111 is installed in the main cylinder connection hole 114 to control the one-way entry of gas into the main cylinder body 101 of the fire extinguisher.

[0032] The locking assembly is used to lock the gas cylinder's 105 circumferential rotational degrees of freedom.

[0033] like Figure 5 and Figure 6As shown, the locking assembly includes a locking mechanism housing 202 fixed to the upper right side of the main body 101 of the fire extinguisher near the mounting cavity 104. A locking sealing bellows 204 is provided on the left side of the locking mechanism housing 202 to seal the opening on the left side of the housing. A pneumatically driven push rod 203 is slidably connected horizontally inside the locking mechanism housing 202; its left end is fixed to the inner side of the movable end of the locking sealing bellows 204, and its right end is provided with a driving vertical plate. A second spring 206 is connected between the inner side of the movable end of the locking sealing bellows 204 and the inner side of the right wall of the locking mechanism housing 202 to provide a rightward restoring force.

[0034] A locking engagement tooth block 205 is provided on the outer side of the movable end of the locking sealing bellows 204. An anti-rotation locking tooth ring 201 is provided near the mouth of the gas cylinder 105. The circumferential locking of the gas cylinder 105 is achieved through the snap-fit ​​engagement of the locking engagement tooth block 205 and the anti-rotation locking tooth ring 201. An air inlet 207 for the locking cavity is provided on the right wall of the locking mechanism housing 202, which connects the internal space of the housing with the inner cavity of the main cylinder 101 of the fire extinguisher.

[0035] A vertical locking assembly is used to lock the gas cylinder 105 in a vertical position.

[0036] like Figure 7 and Figure 8 As shown, the vertical locking assembly includes an end cap lifting guide rod 301 fixed to the top surface of the connecting end cap 107, which slides up and down within the mounting platform 116 and is slidably sealed to the mounting platform 116. A locking mechanism mounting seat 302 is fixed to the mounting platform 116, and a latch sliding seat 305 is slidably connected within it. An end cap latch 307 is slidably connected horizontally within the latch sliding seat 305. The end cap latch 307 and the latch sliding seat 305 are connected by a latch reset spring 306, which provides a leftward reset force for the latch. A slot is provided on the end cap lifting guide rod 301; when the end cap latch 307 engages with the slot, the vertical position of the end cap lifting guide rod 301 can be locked.

[0037] A vertically arranged linkage release spring 303 is fixedly connected to the locking mechanism mounting base 302. Its lower end has a push rod avoidance ramp 304, which is initially positioned to the left of the drive vertical plate of the pneumatic drive push rod 203. A square hole is opened at the upper part of the linkage release spring 303, which engages with the right side of the latch slide seat 305, initially locking the latch slide seat 305. In the initial state, the end cover lifting guide rod 301 abuts against the end cover latch 307, causing it to retract into the latch slide seat 305, and the latch reset spring 306 is in a compressed state.

[0038] Working principle: Screw the gas cylinder 105 into the connecting end cap 107, at which point the bottom of the gas cylinder 105 is exposed. Place the main body 101 of the fire extinguisher vertically, so that the bottom of the gas cylinder 105 touches the ground and the main body 101 of the fire extinguisher is suspended in the air. Press down on the main body, and the main body 101 of the fire extinguisher moves downward relative to the gas cylinder 105, forcing the gas cylinder 105 to drive the connecting end cap 107 upward to compress the main sealing bellows 108 and the first spring 109, until the piercing inflation needle 106 punctures the sealing film of the gas cylinder 105. At this time, the gas cylinder 105 is completely retracted into the mounting cavity 104, and its bottom surface is flush with the bottom surface of the main body.

[0039] During the upward movement of the connecting end cap 107, the end cap lifting guide rod 301 moves upward synchronously. When its slot aligns with the end cap locking tongue 307, the locking tongue reset spring 306 pushes the end cap locking tongue 307 to the left to insert into the slot, locking the vertical position of the gas storage bottle 105.

[0040] After the sealing membrane is punctured, the high-pressure gas in the gas cylinder 105 quickly fills the main sealing bellows 108, enters the needle's internal air guiding chamber 110 through the first through hole, opens the one-way valve 111 inside the cylinder and the one-way valve 112 on the needle top, and enters the main cylinder body 101 of the fire extinguisher through the main cylinder connecting hole 114 and the needle's internal air guiding chamber 110. At the same time, the gas pressure inside the main cylinder body 101 of the fire extinguisher increases, and the high-pressure gas enters the locking mechanism housing 202 through the locking chamber air inlet 207, pushing the air pressure drive push rod 203 to the left, causing the locking engagement tooth block 205 to engage with the anti-rotation locking tooth ring 201, locking the circumferential rotational freedom of the gas cylinder 105, and preventing leakage due to vibration or misoperation.

[0041] Press the spray handle 103 to open the main control valve 113. The high-pressure gas in the main cylinder forces the extinguishing agent to be sprayed out through the siphon pipe and nozzle to extinguish the fire.

[0042] After the fire is extinguished, release the spray handle 103 to close the valve. As the gas pressure inside the main cylinder decreases, when the gas pressure is lower than the reset force of the second spring 206, the second spring 206 contracts, pulling the gas pressure drive push rod 203 and the locking engagement tooth block 205 to move to the right to reset, thus releasing the circumferential lock.

[0043] During the rightward movement of the pneumatically driven push rod 203, its driving vertical plate pushes the lower end of the linkage release spring 303, causing the spring to deflect to the right. This causes the locking tongue sliding seat 305 and the end cover locking tongue 307 to move to the right through the square hole, disengaging from the slot of the end cover lifting guide rod 301 and releasing the vertical lock.

[0044] After the pneumatically driven push rod 203 continues to move to the right past the lower end of the linkage release spring 303, the linkage release spring 303 deflects to the left and resets under its own elasticity, causing the latch sliding seat 305 to move to the left. Since the end cap lifting guide rod 301 has moved down and abutted the left side of the end cap latch 307, the latch sliding seat 305 moves to the left relative to the end cap latch 307, thereby compressing the latch reset spring 306 to recharge it. At the same time, the first spring 109 pushes the connecting end cap 107 down, and the bottom of the gas cylinder 105 protrudes again from the mounting cavity 104, indicating that it needs to be replaced. The user can unscrew the empty bottle in the reverse direction and install the new bottle to restore the standby state.

[0045] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. A quick detachable gas cylinder type fire extinguisher, characterized in that, The device includes a main cylinder body (101) of the fire extinguisher. The lower side of the main cylinder body (101) is provided with an installation cavity (104) for accommodating a gas cylinder (105). The installation cavity (104) is connected to a connecting end cap (107) for connecting the gas cylinder (105) through a vertical sliding mechanism. The main cylinder body (101) of the fire extinguisher is provided with a puncture-type inflation needle (106) for piercing the sealing film of the gas cylinder (105) and guiding gas. The main cylinder body (101) of the fire extinguisher is also provided with a locking component for locking the circumferential rotational freedom of the gas cylinder (105) and a vertical locking component for locking the vertical position of the gas cylinder (105).

2. The quick-assembly type gas-filled fire extinguisher according to claim 1, characterized in that, The main control valve (113) is provided on the top of the main cylinder body (101) of the fire extinguisher. The main control valve (113) is provided with a spray handle (103) and a spray nozzle interface (102) for connecting the nozzle. The main control valve (113) is connected downward to a siphon tube that extends into the bottom of the main cylinder body (101) of the fire extinguisher.

3. A quick-assembly type gas-filled fire extinguisher according to claim 2, characterized in that, The mounting cavity (104) is located on the lower left side of the main body (101) of the fire extinguisher and is not connected to the inner cavity of the main body (101); the main body (101) of the fire extinguisher has a mounting platform (116) on the top side of the mounting cavity (104), and a connecting end cap (107) is vertically slidably connected to the upper part of the mounting cavity (104). The top surface of the connecting end cap (107) and the inner side of the mounting platform (116) are connected by a main sealing bellows (108). The first spring (109) is connected to the main sealing bellows (108); the connecting end cap (107) is T-shaped, and its top disc is pressed on the receiving step (115) at the upper part of the main body (101) of the fire extinguisher; the lower cylinder of the connecting end cap (107) is provided with internal threads, and the outside of the bottle mouth of the gas cylinder (105) is provided with external threads, and the two are connected by threads; a sealing film is provided at the top opening of the gas cylinder (105).

4. A quick-assembly type gas-fired extinguisher according to claim 3, characterized in that, A hollow puncture-type inflation needle (106) is fixedly connected to the mounting platform (116). The bottom end of the needle is provided with a puncture cone tip and the inside of the needle is provided with an internal air guiding chamber (110). The lower part of the puncture-type inflation needle (106) is located inside the main sealing bellows (108). The lower end sidewall is provided with a uniformly distributed first through hole along the circumference, so that the main sealing bellows (108) and the inside of the puncture-type inflation needle (106) are connected. The upper part of the puncture-type inflation needle (106) is provided with a needle top one-way valve (112). The top disc of the connecting end cap (107) is provided with a second through hole for the puncture-type inflation needle (106) to pass through. The mounting platform (116) is provided with a main cylinder connecting hole (114), so that the main sealing bellows (108) and the inner cavity of the fire extinguisher main cylinder (101) are connected. An internal one-way valve (111) is installed in the main cylinder connecting hole (114).

5. A quick-assembly type gas-fired extinguisher according to claim 4, characterized in that, The locking assembly includes a locking mechanism housing (202) fixed to the upper right side of the main body (101) of the fire extinguisher near the mounting cavity (104). A locking sealing bellows (204) is provided on the left side of the locking mechanism housing (202). A pneumatic drive push rod (203) is slidably connected in the horizontal direction inside the locking mechanism housing (202). The left end of the pneumatic drive push rod (203) is fixed to the inner side of the movable end of the locking sealing bellows (204), and a drive vertical plate is provided on the right end. The movable end of the locking sealing bellows (204) A second spring (206) is connected between the inner side of the locking mechanism housing (202) and the inner side of the right wall; a locking engagement tooth block (205) is provided on the outer side of the movable end of the locking sealing bellows (204); an anti-rotation locking tooth ring (201) is provided near the mouth of the gas cylinder (105), and the locking engagement tooth block (205) and the anti-rotation locking tooth ring (201) are engaged; the right wall of the locking mechanism housing (202) has a locking cavity air inlet hole (207) for connecting the inside of the housing with the inner cavity of the main cylinder of the fire extinguisher (101).

6. A quick-assembly type gas-fired extinguisher according to claim 5, characterized in that, The vertical locking assembly includes an end cap lifting guide rod (301) fixed to the top surface of the connecting end cap (107). The end cap lifting guide rod (301) slides up and down within the mounting platform (116) and is slidably sealed to it. A locking mechanism mounting seat (302) is fixed to the mounting platform (116). A locking tongue sliding seat (305) is slidably connected within the locking mechanism mounting seat (302). An end cap locking tongue (307) is slidably connected within the locking tongue sliding seat (305) in the horizontal direction. The end cap locking tongue (307) and the locking tongue sliding seat (305) are connected by a locking tongue reset spring (306). A slot is opened on the end cap lifting guide rod (301), and the end cap locking tongue (307) engages with the slot for locking.

7. A quick-assembly type gas-fired extinguisher according to claim 6, characterized in that, A vertically arranged linkage release spring (303) is fixed on the locking mechanism mounting base (302). The lower end of the linkage release spring (303) is provided with a push rod avoidance slope (304). Initially, the push rod avoidance slope (304) is located on the left side of the driving vertical plate of the pneumatic drive push rod (203). A square hole is opened on the upper part of the linkage release spring (303), and the square hole is stuck on the right side of the lock tongue sliding seat (305). In the initial state, the end cover lifting guide rod (301) abuts against the end cover lock tongue (307), causing it to retract into the lock tongue sliding seat (305), and the lock tongue reset spring (306) is in a compressed state.

8. A quick-assembly type gas-fired extinguisher according to claim 7, characterized in that, A first spring (109) connecting the top surface of the connecting end cap (107) to the inside of the mounting platform (116) provides a downward restoring force; a second spring (206) connecting the inside of the movable end of the locking sealing bellows (204) to the inside of the right wall of the locking mechanism housing (202) provides a rightward restoring force.

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