A portable fire extinguisher assembly

Abstract

The invention relates to the field of fire extinguishers, and discloses a portable fire extinguisher assembly, comprising a fire extinguishing tank, the fire extinguishing tank comprising a tank body, a tank cover is arranged at the upper opening of the tank body, a tank bottom is arranged at the lower opening, the tank cover is in an arc shape that is concave downwards, a bottom hole is opened at the bottom of the tank cover, a convex tube extends at the lower hole mouth of the bottom hole, a trigger valve tube is installed at the lower pipe mouth of the convex tube, a bottom pipe is installed at the lower pipe mouth of the trigger valve tube, the lower pipe mouth of the bottom pipe is close to the tank bottom, a trigger cover is installed on the upper arc surface of the tank cover through a connecting column, the lower surface of the trigger cover is in an arc shape that matches the tank cover, a gap exists between the lower surface of the trigger cover and the upper arc surface of the tank cover, a one-way valve for allowing a trigger medium in the trigger cover to flow into the tank body in one direction is arranged in the connecting column, a trigger valve is arranged between the trigger cover and the trigger valve tube, and when the trigger medium in the trigger cover receives the heat of a high-temperature flame and volatilizes, the trigger valve can be driven to open the trigger valve tube.

Description

Technical Field

[0001] The invention relates to the field of fire fighting equipment, in particular to the field of fire extinguishers, and in particular to a portable fire extinguisher assembly. Background Art

[0002] A fire extinguisher is one of the common fire-fighting devices in life. When using it, you need to shake it up and down to loosen the fire-extinguishing medium, then unplug the lead seal, pull out the safety pin, keep a safe distance, hold the nozzle with your left hand, aim the nozzle at the flame, and press the handle with your right hand. The operation is relatively cumbersome, and the user is close to the flame and is easily burned by the flame. In addition, when a fire occurs, timely and rapid implementation of fire-fighting measures is one of the important factors to prevent the spread and expansion of the fire. After a fire occurs, it is necessary to leave people a safe fire escape route. When firefighters go deep into the fire to extinguish the fire, it is also necessary to leave a safe return route for firefighters.

[0003] Based on the use of existing fire extinguisher technology, some existing technologies have been found after searching, and they are introduced one by one:

[0004] First, the Chinese invention patent with authorization announcement number CN112263799B discloses an easy-to-use throwable fire extinguisher, which adopts a throwing method to keep firefighters away from the fire source and reduce the danger of fire to firefighters. It has some shortcomings: on the one hand, before use, it is necessary to adjust the output of the nozzle through the regulating valve, then open the top cover, open the output end of the fire extinguishing tank through the valve, and then close the top cover before throwing. When throwing, the breaking of the thermosensitive glass tube is used as a triggering action to enable the subsequent fire extinguishing action to be implemented. Therefore, it is relatively cumbersome to use, and there is a hidden danger that the thermosensitive glass tube is not broken due to a throwing error, and the fire extinguishing action cannot be smoothly implemented. On the other hand, since the thermosensitive glass tube needs to be actively broken, it cannot be self-triggered, and it is difficult to self-trigger to leave a safe passage for people or firefighters.

[0005] Secondly, the Chinese invention patent with authorization announcement number CN113941113B discloses a rotary throwing fire extinguisher, which also adopts the throwing method, and the spray head can rotate 360 ​​degrees to increase the fire extinguishing range. However, according to its usage description, it also has the problems of cumbersome use and inability to self-trigger.

[0006] Thirdly, the Chinese invention patent with authorization announcement number CN114129938B discloses a throwable and handheld dual-purpose fire extinguisher, which also has the problem of using the impact generated by throwing as a triggering action for subsequent fire extinguishing actions and the inability to self-trigger.

[0007] Based on the above, the present invention proposes a portable fire extinguisher assembly. Summary of the invention

[0008] To solve the problems mentioned in the above background, the present invention provides a portable fire extinguisher assembly.

[0009] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0010] A portable fire extinguisher assembly comprises a fire extinguishing tank, which comprises a tank body, a tank cover is arranged at the upper opening of the tank body, and a tank bottom is arranged at the lower opening, the tank cover is in an arc shape that is concave downwards, a bottom hole is opened at the bottom of the tank cover, a convex tube extends at the lower hole mouth of the bottom hole, the convex tube is coaxial with the tank body, a trigger valve tube is installed at the lower pipe mouth of the convex tube, a bottom tube is installed at the lower pipe mouth of the trigger valve tube, the lower pipe mouth of the bottom tube is close to the tank bottom, the upper arc surface of the tank cover is installed with the trigger cover through a connecting column which is vertically arranged and has a hollow structure, the lower surface of the trigger cover is in an arc shape that matches the tank cover, and there is a gap between the lower surface of the trigger cover and the upper arc surface of the tank cover, a one-way valve for allowing the trigger medium in the trigger cover to flow into the tank body in one direction is arranged in the connecting column, and a trigger valve is arranged between the trigger cover and the trigger valve tube, and when the trigger medium in the trigger cover receives the heat of the high-temperature flame and volatilizes, the trigger valve can be driven to open the trigger valve tube.

[0011] As a further improvement and optimization of the present invention, an installation groove is provided at the middle position of the lower cavity wall of the trigger cover, the trigger valve includes a piston sleeved in the installation groove, a trigger spring is provided between the piston and the bottom of the installation groove, a valve stem extends from the bottom of the piston, the bottom of the valve stem passes through the convex tube, the trigger valve tube and the bottom tube, a trigger valve core located in the trigger valve tube is provided on the outside of the valve stem, and a step is provided at the lower tube mouth of the convex tube. Initially, the elastic force of the trigger spring makes the trigger valve core fit against the step, and the lower tube mouth of the convex tube is blocked.

[0012] As a further improvement and optimization of the present invention, the upper cavity wall of the trigger cover is provided with a pressure relief valve tube and an air hole for connecting the pressure relief valve tube with the outside world, a pressure relief valve core is sleeved inside the pressure relief valve tube, a pressure relief spring is provided between the pressure relief valve core and the upper cavity wall of the trigger cover, the force required to open the one-way valve is greater than the maximum elastic force of the pressure relief spring, and the elastic force coefficient of the trigger spring is greater than the elastic force coefficient of the pressure relief spring.

[0013] As a further improvement and optimization of the present invention, a plurality of fins are distributed in an array on the upper surface of the trigger cover.

[0014] As a further improvement and optimization of the present invention, a counterweight is provided at the bottom of the tank bottom.

[0015] As a further improvement and optimization of the present invention, a buckle assembly is provided at the bottom of the tank bottom, and the buckle assembly is used to limit the movement of the valve stem when the fire extinguishing tank is triggered to spray the fire extinguishing medium outward.

[0016] As a further improvement and optimization of the present invention, the snap assembly includes a bracket body arranged at the bottom of the tank, a snap bracket is slidably installed on the bracket body in a horizontal direction, two snap brackets are provided and are respectively located on both sides of the valve stem, a snap spring is provided between the snap bracket and the bracket body, initially, the snap bracket is in contact with the valve stem, the snap spring is in a compressed state, the elastic force of the snap spring is used to drive the snap bracket to move close to the valve stem, and a snap groove is provided on the outer cylindrical surface of the valve stem.

[0017] As a further improvement and optimization of the present invention, the snap assembly also includes a button slidably mounted on the bracket body, an insertion rod extending from the button, the end of the insertion rod passing through the snap bracket, the snap bracket is provided with a slope one, and the insertion rod is provided with a slope two, and the slope one is parallel to the slope two. When the button is pressed, the snap bracket can be moved away from the valve stem through the cooperation of the slope one and the slope two.

[0018] As a further improvement and optimization of the present invention, the interior of the valve stem is hollow and a sealing cover is detachably installed on the bottom, a avoidance hole connected to the valve stem is provided on the piston, a nozzle is provided at the bottom of the tank bottom, and an end cap is detachably installed at the end of the nozzle.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This solution is easy to use. Compared with the existing patent documents mentioned in the background technology, it does not require any operation before use. The fire extinguisher can can be directly thrown into the fire. In addition, this solution can also play the following roles:

[0021] a. When placing the fire extinguisher, you can place it in a place where fire is easy to start. In this way, when a fire occurs, the fire extinguisher can be triggered by itself and spray the fire extinguishing medium around to extinguish the fire or suppress the spread of the fire;

[0022] b. When firefighters enter the fire for rescue, they can carry several fire extinguishing cans with them. According to the actual situation inside the fire, they can place the fire extinguishing cans one by one on the retreat path. The fire extinguishing cans placed on the retreat path can be triggered by themselves and continue to spray the fire extinguishing medium around to protect the retreat path and reserve a safer return passage for firefighters. It should be noted that in this scheme, when the fire extinguishing cans spray the fire extinguishing medium around, they are triggered by the size of the surrounding fire. When the surrounding fire is extinguished by the fire extinguishing medium and the temperature drops, the volatilization speed of the triggering medium also slows down, and the spraying speed of the fire extinguishing medium slows down. The advantage is that it avoids spraying the fire extinguishing medium all at once, so that when the fire nearby spreads later, it is impossible to continue to spray the fire extinguishing medium to suppress it, that is, not only leaving a return passage for firefighters, but also being able to adapt to the surrounding fire situation and spray the corresponding fire extinguishing medium to extend the preservation time of the return passage as much as possible. In addition, this situation can also be used at the fire passage to protect the fire passage in the event of a fire and give people enough time to escape;

[0023] c. The fire extinguisher tanks in this solution can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 is a cross-sectional view of the present invention;

[0026] Figure 3 is a cross-sectional view of the tank cover and the trigger cover;

[0027] Figure 4 It is a cross-sectional view of the bottom tube, tank bottom and snap assembly;

[0028] Figure 5 is a schematic diagram of a buckle assembly and a valve stem;

[0029] Figure 6 A cross-sectional view of the buckle assembly.

[0030] The reference numerals in the accompanying drawings are:

[0031] 100. Tank body; 101. Handle; 102. Tank cover; 103. Trigger cover; 104. Fin; 105. Connecting column; 106. Pressure relief valve tube; 107. Pressure relief valve core; 108. Pressure relief spring; 109. Trigger valve tube; 110. Piston; 111. Valve stem; 1111. Slot; 112. Trigger spring; 113. Trigger valve core; 114. Bottom tube; 115. Tank bottom; 116. Buckle assembly; 1161. Buckle bracket; 1162. Buckle spring; 1163. Button; 1164. Insert rod. DETAILED DESCRIPTION

[0032] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0033] Embodiment 1

[0034] Reference Figure 1-Figure 6 A portable fire extinguisher assembly includes a fire extinguishing tank, which includes a tank body 100. The tank body 100 is arranged vertically as an example for explanation. The upper opening of the tank body 100 is provided with a tank cover 102, the lower opening is provided with a tank bottom 115, and the outer surface is provided with a handle 101. The setting of the handle 101 makes the fire extinguishing tank in this scheme easy to carry. In addition, as shown in the accompanying drawings, the fire extinguishing tank of this scheme is cylindrical as a whole, without a nozzle or the like, and is also more convenient to transport and carry.

[0035] The tank cover 102 is in an arc shape that is concave downward. A bottom hole is opened at the bottom of the tank cover 102. A convex tube extends from the lower hole opening of the bottom hole. The convex tube is coaxial with the tank body 100. A trigger valve tube 109 is installed at the lower tube opening of the convex tube. A bottom tube 114 is installed at the lower tube opening of the trigger valve tube 109. The lower tube opening of the bottom tube 114 is close to the tank bottom 115.

[0036] The upper curved surface of the tank cover 102 is equipped with a trigger cover 103 through a vertically arranged hollow connecting column 105. The upper surface of the trigger cover 103 is arrayed with a number of fins 104, and the lower surface is a curved surface shape matching the tank cover 102. There is a gap between the lower surface of the trigger cover 103 and the upper curved surface of the tank cover 102, and the gap is named the output gap.

[0037] A one-way valve is arranged in the connecting column 105, which is used to make the trigger medium in the trigger cover 103 flow into the tank body 100 in one direction. The trigger medium will volatilize when encountering high temperature. For example, alcohol will volatilize into gas at high temperature and be injected into the tank body 100. Preferably, when no fire occurs, the high temperature of the environment where the fire extinguisher is located may easily cause the trigger medium to be triggered, resulting in false triggering. Therefore, the upper cavity wall of the trigger cover 103 is provided with a pressure relief valve tube 106 and an air hole for connecting the pressure relief valve tube 106 with the outside world. The pressure relief valve tube 106 is provided with a pressure relief valve. The valve core 107 is provided with a pressure relief spring 108 between the pressure relief valve core 107 and the upper cavity wall of the trigger cover 103. The one-way valve is a prior art and includes a one-way spring in its structure. The elastic coefficient of the one-way spring is greater than the elastic coefficient of the pressure relief spring 108. That is, when no fire occurs, the ambient temperature of the fire extinguisher is high, causing part of the triggering medium to volatilize. The pressure relief valve core 107 is pushed upward in the pressure relief valve pipe 106, and the pressure relief spring 108 is compressed, and the volatilized triggering medium will not open the one-way valve to enter the tank body 100, thereby preventing false triggering.

[0038] A mounting groove is provided at the middle position of the lower cavity wall of the trigger cover 103, a piston 110 is sleeved in the mounting groove, a trigger spring 112 is provided between the piston 110 and the groove bottom of the mounting groove, a valve stem 111 extends from the bottom of the piston 110, the bottom of the valve stem 111 passes through the convex tube, the trigger valve tube 109 and the bottom tube 114 and is located below the fire extinguisher, a trigger valve core 113 located in the trigger valve tube 109 is provided outside the valve stem 111, a step is provided at the lower pipe mouth of the convex tube, initially, the elastic force of the trigger spring 112 causes the valve stem 111 and the trigger valve core 113 to have an upward movement tendency, so that the trigger valve core 113 is closely fitted with the step, and the lower pipe mouth of the convex tube is blocked; the trigger spring 112 The elastic coefficient is greater than the elastic coefficient of the pressure relief spring 108 to prevent false triggering. When the trigger cover 103 is close to the flame or directly contacts the flame, the high temperature will cause the compression of the pressure relief spring 108 to reach the maximum in a short time. After that, the trigger medium in the trigger cover 103 continues to evaporate, and the air pressure increases, pushing the piston 110 downward, so that the trigger valve core 113 cancels the blockage of the convex pipe. At the same time, the gaseous trigger medium continues to enter the tank body 100. Under the action of continuous positive pressure, the fire extinguishing medium in the tank body 100 is sprayed 360 degrees around through the bottom pipe 114, the trigger valve pipe 109, the convex pipe, and the output gap in turn, so as to achieve the purpose of extinguishing and suppressing the fire.

[0039] Preferably, the present solution is to throw the extinguisher into the fire. Therefore, a counterweight or other structure may be provided at the bottom of the tank bottom 115. By utilizing the existing tumbler technology, the extinguisher tank may stand up and spray the extinguishing medium around after being thrown into the fire.

[0040] Working process of embodiment 1:

[0041] When there is no fire, if the trigger medium evaporates due to the ambient temperature of the fire extinguisher, the gaseous trigger medium will push the pressure relief valve core 107 upward in the pressure relief valve tube 106, and the pressure relief spring 108 will be compressed, thereby preventing false triggering.

[0042] When a fire occurs, the fire extinguishing tank is directly thrown into the fire. Under the action of high temperature flame, the heat is transferred to the trigger medium through the fins 104, causing the trigger medium to volatilize quickly and the air pressure to increase, thereby opening the convex tube. At the same time, the gaseous trigger medium continues to enter the tank body 100 through the one-way valve. Under the action of continuous positive pressure, the fire extinguishing medium in the tank body 100 is sprayed 360 degrees around through the bottom tube 114, the trigger valve tube 109, the convex tube, and the output gap in sequence, thereby achieving the purpose of extinguishing and suppressing the fire.

[0043] Based on the above, it can be seen that the present solution is simple to use. Compared with the existing patent documents mentioned in the background technology, no operation is required before use. The fire extinguisher can be directly thrown into the fire. In addition, the present solution can also play the following roles: a. When placing the fire extinguisher can, it can be placed in a place where fire is easy to start. In this way, when a fire occurs, the fire extinguisher can be self-triggered to spray the fire extinguishing medium all around, which plays a role in extinguishing the fire or suppressing the spread of the fire; b. When firefighters enter the fire for rescue, they can carry several fire extinguishing cans with them. According to the actual situation inside the fire, the fire extinguishing cans are placed one by one on the retreat road. The fire extinguishing cans placed on the retreat road can be self-triggered to continuously spray the fire extinguishing medium all around, thereby protecting the retreat road and providing firefighters with a warning. Leave a relatively safe return passage. It should be noted that in this scheme, when the fire extinguisher sprays the fire extinguishing medium all around, it is triggered by the size of the surrounding fire. When the surrounding fire is extinguished by the fire extinguishing medium and the temperature drops, the volatilization rate of the triggering medium also slows down, and the spraying speed of the fire extinguishing medium slows down. The advantage is that it avoids spraying the fire extinguishing medium all at once, so that when the subsequent nearby fire spreads, it will be impossible to continue spraying the fire extinguishing medium to suppress it. That is, not only a return passage is left for firefighters, but also it can adapt to the surrounding fire conditions and spray the corresponding fire extinguishing medium, thereby extending the storage time of the return passage as much as possible. In addition, this situation can also be used in fire passages. When a fire occurs, the fire passages can be protected to give people enough time to escape.

[0044] In the preferred embodiment, in order to prevent the trigger spring 112 from releasing its elastic force when the fire extinguishing tank is in use, so that the trigger valve core 113 re-blocks the convex tube, and then the air pressure in the trigger cover 103 increases, reopening the convex tube, and so on and so forth, it is easy to cause the ejected fire extinguishing medium to be intermittent, thus affecting the fire extinguishing effect. Figure 4 A buckle assembly 116 is provided at the bottom of the tank bottom 115, which is used to limit the movement of the valve stem 111 when the fire extinguishing tank is triggered to spray the fire extinguishing medium, so that the convex pipe remains in an open state, allowing the fire extinguishing medium to be sprayed smoothly around.

[0045] Specifically, refer to Figure 5 and Figure 6The buckle assembly 116 includes a bracket body arranged at the bottom 115 of the tank, and a buckle bracket 1161 is slidably mounted on the bracket body in the horizontal direction. Two buckle brackets 1161 are provided and are respectively located on both sides of the valve stem 111. A buckle spring 1162 is provided between the buckle bracket 1161 and the bracket body. Initially, the buckle spring 1162 is in a compressed state, and its elastic force is used to drive the buckle bracket 1161 to move close to the valve stem 111. Therefore, initially, the buckle bracket 1161 contacts the outer cylindrical surface of the valve stem 111, and the outer cylindrical surface of the valve stem 111 is provided with a clamping groove 1111. When the triggering medium drives the valve stem 111 to move downward under the action of the high-temperature flame, the clamping groove 1111 will face the buckle bracket 1161. At this time, the buckle spring 1162 releases its elastic force, so that the buckle bracket 1161 is inserted into the clamping groove 1111, thereby limiting the movement of the valve stem 111, and the convex tube remains in an open state.

[0046] Furthermore, the snap assembly 116 also includes a button 1163 slidably mounted on the bracket body, and an insert rod 1164 extends from the button 1163, the end of the insert rod 1164 passes through the snap bracket 1161, and the snap bracket 1161 is provided with a slope 1, and the insert rod 1164 is provided with a slope 2, and the slope 1 is parallel to the slope 2. When the button 1163 is pressed and moves with the insert rod 1164, the cooperation of the slope 1 and the slope 2 can make the snap bracket 1161 move away from the valve stem 111, thereby disengaging from the slot 1111. At the same time, the trigger spring 112 releases the elastic force to move the valve stem 111 upward and reset.

[0047] Embodiment 2

[0048] In this solution, the fire extinguisher tank is made of metal material, and in order to save costs, the fire extinguisher tank can be recycled and reused.

[0049] Reference Figure 4 The interior of the valve stem 111 is hollow and a sealing cover is provided at the bottom. The piston 110 is provided with an avoidance hole connected to the valve stem 111. The bottom of the tank bottom 115 is provided with a nozzle, and the end of the nozzle is provided with an end cover. After the fire is extinguished, the fire extinguishing tank is recovered, and then the end cover and the sealing cover are opened, and the fire extinguishing medium or the triggering medium can be respectively injected into the tank body 100 and the triggering cover 103 to achieve the purpose of reuse.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A portable fire extinguisher assembly, comprising a fire extinguishing tank, the fire extinguishing tank comprising a tank body (100), a tank cover (102) being arranged at an upper opening of the tank body (100), and a tank bottom (115) being arranged at a lower opening, wherein: The tank cover (102) is in an arc shape that is concave downwards. A bottom hole is formed at the bottom of the tank cover (102). A convex tube extends from the lower hole opening of the bottom hole. The convex tube is coaxial with the tank body (100). A trigger valve tube (109) is installed at the lower tube opening of the convex tube. A bottom tube (114) is installed at the lower tube opening of the trigger valve tube (109). The lower tube opening of the bottom tube (114) is close to the tank bottom (115). The upper arc surface of the tank cover (102) is installed with a trigger cover (103) via a vertically arranged and hollow connecting column (105). The trigger cover (103) ) has a lower surface that is in an arc shape that matches the tank cover (102), a gap exists between the lower surface of the trigger cover (103) and the upper arc surface of the tank cover (102), a one-way valve for allowing the trigger medium in the trigger cover (103) to flow into the tank body (100) in a one-way manner is provided in the connecting column (105), and a trigger valve is provided between the trigger cover (103) and the trigger valve tube (109), and when the trigger medium in the trigger cover (103) receives the heat of the high-temperature flame and volatilizes, it can drive the trigger valve to open the trigger valve tube (109); A mounting groove is provided at a middle position of a lower cavity wall of the trigger cover (103); the trigger valve comprises a piston (110) sleeved in the mounting groove; a trigger spring (112) is provided between the piston (110) and the groove bottom of the mounting groove; a valve stem (111) extends from the bottom of the piston (110); the bottom of the valve stem (111) passes through a convex tube, a trigger valve tube (109) and a bottom tube (114); a trigger valve core (113) located in the trigger valve tube (109) is provided outside the valve stem (111); a step is provided at the lower tube opening of the convex tube; initially, the elastic force of the trigger spring (112) causes the trigger valve core (113) to fit the step, and the lower tube opening of the convex tube is blocked; The upper cavity wall of the trigger cover (103) is provided with a pressure relief valve tube (106) and an air hole for connecting the pressure relief valve tube (106) with the outside world; a pressure relief valve core (107) is sleeved inside the pressure relief valve tube (106); a pressure relief spring (108) is provided between the pressure relief valve core (107) and the upper cavity wall of the trigger cover (103); the force required to open the one-way valve is greater than the maximum elastic force of the pressure relief spring (108); and the elastic coefficient of the trigger spring (112) is greater than the elastic coefficient of the pressure relief spring (108); The fire extinguishing medium in the tank body (100) is sprayed 360 degrees in all directions through the bottom pipe (114), the trigger valve pipe (109), the convex pipe, and the gap between the lower surface of the trigger cover (103) and the upper arc surface of the tank cover (102).

2. A portable fire extinguisher assembly according to claim 1, characterized in that: A plurality of fins (104) are distributed in an array on the upper surface of the trigger cover (103).

3. A portable fire extinguisher assembly according to claim 1, characterized in that: A counterweight is arranged at the bottom of the tank bottom (115).

4. A portable fire extinguisher assembly according to claim 1, characterized in that: A buckle assembly (116) is provided at the bottom of the tank bottom (115), and the buckle assembly (116) is used to limit the movement of the valve stem (111) when the fire extinguishing tank is triggered to spray the fire extinguishing medium outward.

5. A portable fire extinguisher assembly according to claim 4, characterized in that: The snap assembly (116) comprises a bracket body arranged on the tank bottom (115), a snap bracket (1161) being slidably mounted on the bracket body in a horizontal direction, two snap brackets (1161) being arranged and being respectively located on both sides of the valve stem (111), a snap spring (1162) being arranged between the snap bracket (1161) and the bracket body, initially, the snap bracket (1161) is in contact with the valve stem (111), the snap spring (1162) is in a compressed state, the elastic force of the snap spring (1162) is used to drive the snap bracket (1161) to move closer to the valve stem (111), and a snap groove (1111) is arranged on the outer circumferential surface of the valve stem (111).

6. A portable fire extinguisher assembly according to claim 5, characterized in that: The snap assembly (116) further includes a button (1163) slidably mounted on the bracket body, an insert rod (1164) extending from the button (1163), the end of the insert rod (1164) passing through the snap bracket (1161), a first inclined plane is provided on the snap bracket (1161), and a second inclined plane is provided on the insert rod (1164), and the first inclined plane is parallel to the second inclined plane. When the button (1163) is pressed, the first inclined plane cooperates with the second inclined plane, so that the snap bracket (1161) can move away from the valve stem (111).

7. A portable fire extinguisher assembly according to claim 1, characterized in that: The interior of the valve stem (111) is hollow and a sealing cover is detachably mounted on the bottom. The piston (110) is provided with an avoidance hole connected to the valve stem (111). The bottom of the tank bottom (115) is provided with a nozzle, and an end cap is detachably mounted on the end of the nozzle.

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