Automatic fire extinguishing tank

Abstract

The invention discloses an automatic fire extinguishing tank which comprises a tank body, an installation connecting piece, a bottom cover, a sliding rail support, a flow dividing cone, a sliding limiting piece, a spring, fire extinguishing dry powder, a connecting bolt and a fuse. The diversion cone can move in the extending direction of the sliding rail support, the bottom of the diversion cone is connected with the bottom cover, the bottom cover is used for sealing an opening in the bottom of the tank body, the spring is used for applying downward pushing elastic force to the diversion cone, the connecting bolt penetrates through the bottom cover and is connected with the fuse, and the fire extinguishing dry powder is filled in a containing cavity above the diversion cone. The fire extinguishing tank can be installed above a fire source, when a fire occurs, high temperature can enable the fuse to be fused and fall off, the spring releases thrust, the bottom cover and the diversion cone are driven to move downwards to open the tank body, the fire extinguishing dry powder is sprayed to cover the fire source area under the action of gravity, and therefore automatic fire extinguishing is achieved, and the fire extinguishing tank is flexible to install, wide in application scene and high in practicability. And the rapid fire extinguishing requirement of a user in a narrow space or an unattended occasion can be met.

Description

Technical Field

[0001] The present invention relates to the field of fire extinguishers, and in particular to an automatic fire extinguishing tank. Background Art

[0002] In various open fire or high-temperature operation areas, such as kitchen stoves, distribution rooms or vehicle cabins, etc., due to the existence of continuous heat sources, and combustibles such as grease, paper, wires, etc. often gather around, the environment is relatively enclosed and the space is narrow, which has always been the focus and difficulty in fire prevention and control. Moreover, with the improvement of people's awareness of fire safety, conventional fire extinguishing devices such as portable fire extinguishers, automatic sprinkler systems, smoke and temperature sensor linkage alarm devices, etc. have been widely installed in various places, so as to detect and extinguish fires when they occur.

[0003] In the prior art, most of the fire extinguishing devices on the market rely on external power supplies, induction circuits or communication networks to work. Once there is a power supply interruption or system failure, it is easy to cause the fire extinguishing device to fail to operate normally at a critical moment, thus missing the best opportunity to extinguish the initial fire source and increasing the risk of fire spread and accident expansion; at the same time, many fire extinguishing devices have large product volumes and complex structures, making it difficult to meet the installation and use requirements in narrow areas such as kitchens, vehicle cabins, and distribution rooms; in addition, some fire extinguishing equipment that requires manual operation not only has high requirements for the reaction speed and operation proficiency of the users, but also is often difficult to play a role in time in case of sudden fire or unattended situations, and cannot meet the urgent need for rapid fire extinguishing.

[0004] Therefore, there are defects in the prior art and improvement is needed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide an automatic fire extinguishing tank with a compact structure, capable of automatic triggering and suitable for installation in narrow spaces.

[0006] To achieve this purpose, the present invention adopts the following technical solutions: an automatic fire extinguishing tank, comprising a tank body, an installation connecting piece, a bottom cover, a slide rail bracket, a flow dividing cone, a sliding limiting piece, a spring, fire extinguishing powder, a connecting bolt and a fuse;

[0007] The tank body has an accommodation chamber, the slide rail bracket is arranged in the tank body, a chute is arranged inside the slide rail bracket, a connecting ear plate is arranged at the top of the flow dividing cone, and the connecting ear plate is arranged in the chute through the sliding limiting piece, so that the flow dividing cone can move along the extension direction of the chute;

[0008] A slide rail channel is arranged in the middle of the flow dividing cone, the bottom of the slide rail bracket is located in the slide rail channel, the bottom of the flow dividing cone is connected with the bottom cover, the bottom cover is arranged at the bottom of the tank body, and the bottom cover is used to seal the opening at the bottom of the tank body;

[0009] The spring is sleeved outside the slide rail bracket. The top of the spring abuts against the inner top wall of the tank body, and the bottom of the spring abuts against the top of the flow dividing cone. The spring is used to apply a downward pushing elastic force to the flow dividing cone;

[0010] The connecting bolt is arranged at the bottom of the slide rail bracket. The connecting bolt passes through the bottom cover and is connected to the fuse. The fuse is used to fit and fix the bottom cover to the bottom of the tank body;

[0011] The fire extinguishing dry powder is filled in the accommodation chamber above the flow dividing cone. When the fuse is heated and melted, the flow dividing cone and the bottom cover move downward under the elastic force of the spring to open the bottom opening of the tank body, so that the fire extinguishing dry powder is ejected downward to achieve fire extinguishing.

[0012] Adopting the above technical solution, in the automatic fire extinguishing tank, there is also a heat conducting sheet. The heat conducting sheet is made of aluminum alloy or stainless steel. The heat conducting sheet is in a fan-shaped structure. The heat conducting sheet is sleeved outside the fuse. The heat conducting sheet is used to transfer external heat to the fuse.

[0013] Adopting the above technical solution, in the automatic fire extinguishing tank, the sliding limit member is an open split pin. The open split pin is used to prevent the flow dividing cone from slipping off the slide rail bracket.

[0014] Adopting the above technical solution, in the automatic fire extinguishing tank, there is also a V-shaped pad. The V-shaped pad is arranged at the bottom of the chute. The V-shaped pad is used to abut against the sliding limit member when the sliding limit member slides to the bottom of the chute.

[0015] Adopting the above technical solution, in the automatic fire extinguishing tank, there is also an O-ring seal. The O-ring seal is arranged on the bottom cover. The O-ring seal is used to seal the gap between the bottom cover and the bottom opening of the tank body.

[0016] Adopting the above technical solution, in the automatic fire extinguishing tank, the fuse is made of a low melting point alloy or a high molecular polymer material.

[0017] Adopting the above technical solution, in the automatic fire extinguishing tank, the included angle between the conical surface of the flow dividing cone and the horizontal line is 30-50°.

[0018] Adopting the above technical solution, in the automatic fire extinguishing tank, a shaped metal sheet is arranged at the top of the tank body, and a reinforcing rib structure is arranged on the inner top wall of the tank body.

[0019] With the above technical solution, in the automatic fire extinguishing tank, the flow dividing cone is detachably connected to the bottom cover. A positioning post is provided at the bottom of the flow dividing cone, and a positioning sleeve adapted to be connected to the positioning post is provided at the top of the bottom cover.

[0020] With the above technical solution, in the automatic fire extinguishing tank, a positioning protrusion extending downward is provided on the inner top wall of the tank body. The positioning protrusion is used for sleeving and connecting with the top of the spring to fixedly install the spring.

[0021] With the above technical solution, in the automatic fire extinguishing tank, the installation connecting member is a magnetic attraction assembly. The magnetic attraction assembly includes a connecting rod, a magnet and an installation cover;

[0022] The bottom of the connecting rod is connected to the top of the tank body. A through hole is provided in the middle of the installation cover. The aperture of the through hole is larger than the diameter of the connecting rod, so that the connecting rod can swing relative to the installation cover. A stop block is provided at the top of the connecting rod. The stop block is used to prevent the connecting rod from slipping out of the through hole;

[0023] A receiving groove is provided on the top surface of the installation cover. The magnet is arranged in the receiving groove. The magnet is used for magnetically attracting and fixing the tank body.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The fire extinguishing tank of the present invention can be installed above a kitchen stove, a power distribution cabinet or other areas with high fire risks. The fire extinguishing tank is installed by magnetic attraction and adopts a passive thermal trigger mechanism. When a fire occurs, the external high temperature is conducted to the fuse through the heat conducting sheet, causing it to melt. The spring inside the tank body can instantaneously release thrust and drive the flow dividing cone and the bottom cover to open the opening at the bottom of the tank body downward, so that the fire extinguishing powder is quickly released under the action of gravity and thrust and evenly sprayed on the fire area below, thereby achieving rapid fire extinguishing and meeting the user's rapid fire extinguishing requirements in narrow spaces, high-risk and unattended occasions. The structure of the present invention is compact and has beneficial effects such as rapid response, flexible installation and wide application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0028] Figure 1 is a schematic diagram of the overall sectional structure of the present invention;

[0029] Figure 2 is a schematic diagram of the overall exploded structure of the present invention;

[0030] Figure 3 is a schematic diagram of the overall structure of the present invention;

[0031] Figure 4 is a schematic diagram of the assembly structure of the installation connecting piece of the present invention;

[0032] Figure 5 is a schematic diagram of the internal structure of the tank body of the present invention;

[0033] Figure 6 is a schematic diagram of the installation structure of the slide rail bracket of the present invention;

[0034] Figure 7 is a schematic diagram of the bottom cover structure of the present invention. Detailed implementation manners

[0035] To make the invention purposes, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be intermediate components present at the same time.

[0037] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0038] As Figures 1 to 7 shown, an embodiment of the present invention provides an automatic fire extinguishing tank, which includes a tank body 11, an installation connecting piece 12, a bottom cover 13, a slide rail bracket 2, a flow dividing cone 3, a sliding limiting piece 4, a spring 5, fire extinguishing powder 6, a connecting bolt 7 and a fuse 8; a receiving chamber 110 is provided inside the tank body 11, the slide rail bracket 2 is arranged inside the tank body 11, a chute 20 is provided inside the slide rail bracket 2, a connecting ear plate 31 is provided at the top of the flow dividing cone 3, and the connecting ear plate 31 is arranged in the chute 20 through the sliding limiting piece 4 so that the flow dividing cone 3 can move along the extending direction of the chute 20; a slide rail channel 30 is provided in the middle of the flow dividing cone 3, the bottom of the slide rail bracket 2 is located inside the slide rail channel 30, the bottom of the flow dividing cone 3 is connected to the bottom cover 13, the bottom cover 13 is arranged at the bottom of the tank body 11, and the bottom cover 13 is used to close the opening at the bottom of the tank body 11; the spring 5 is sleeved outside the slide rail bracket 2, the top of the spring 5 abuts against the inner top wall of the tank body 11, and the bottom of the spring 5 abuts against the top of the flow dividing cone 3, and the spring 5 is used to apply a downward pushing elastic force to the flow dividing cone 3; the connecting bolt 7 is arranged at the bottom of the slide rail bracket 2, the connecting bolt 7 passes through the bottom cover 13 and is connected to the fuse 8, and the fuse 8 is used to fit and fix the bottom cover 13 at the bottom of the tank body 11; the fire extinguishing powder 6 is filled in the receiving chamber 110 above the flow dividing cone 3. When the fuse 8 is heated and melted, the flow dividing cone 3 and the bottom cover 13 move downward under the elastic force of the spring 5 to open the bottom opening of the tank body 11, so that the fire extinguishing powder 6 is ejected downward to achieve fire extinguishing.

[0039] The interior of the tank body 11 is provided with a containing chamber 110, which can be used to fill the fire extinguishing dry powder 6. The opening at the bottom of the tank body 11 is closed by a bottom cover 13 to prevent the leakage of the fire extinguishing dry powder 6. The slide rail bracket 2 is installed inside the tank body 11 and is provided with a chute 20. The top of the flow dividing cone 3 is provided with a connecting ear plate 31 and is connected to the chute 20 through a sliding limiting member 4, so that the flow dividing cone 3 can move along the extending direction of the chute 20. The spring 5 is arranged outside the slide rail bracket 2. Its top abuts against the inner top wall of the tank body 11, and its bottom abuts against the top of the flow dividing cone 3. The spring 5 is in a compressed state in the non-triggered state to provide pre-stored elastic potential energy. A slide rail channel 30 is provided in the middle of the flow dividing cone 3 and is nested in the bottom area of the slide rail bracket 2, so as to realize the double guiding of the flow dividing cone 3 and prevent the flow dividing cone 3 from shifting or jamming during movement. The bottom of the flow dividing cone 3 is provided with a bottom cover 13, and is locked to the bottom of the tank body 11 together with the fuse 8 through a connecting bolt 7. Under normal conditions, the fuse 8 remains stable at room temperature, firmly attaching the bottom cover 13 to the bottom of the tank body 11, thereby closing the tank body 11 and preventing the premature leakage of the fire extinguishing dry powder 6. When a fire occurs or the local temperature rises abnormally in the external environment, the fuse 8 is heated and melted, losing its fixing function, so that the spring 5 originally in a compressed state quickly releases the thrust under the action of no binding force, driving the flow dividing cone 3 and the bottom cover 13 to slide downwards as a whole. The bottom cover 13 is opened accordingly, an outlet is formed at the bottom of the tank body 11, and the fire extinguishing dry powder 6 in the containing chamber 110 is quickly released under the action of gravity and inertia and is sprayed downwards through the guiding structure of the flow dividing cone 3, thereby realizing the covering and extinguishing of the fire source below.

[0040] Such as Figure 1 And Figure 3As shown in the figure, further, it further includes a heat conducting sheet 9. The heat conducting sheet 9 is made of aluminum alloy or stainless steel. The heat conducting sheet 9 is in a fan-shaped structure. The heat conducting sheet 9 is sleeved outside the fuse 8. The heat conducting sheet 9 is used to transfer external heat to the fuse 8. Since the fire extinguishing tank needs to be installed above the location where the fire occurs, such as above the kitchen stove or on the top of the distribution room. When a fire breaks out, the heat is first conducted or radiated upward by open flames or high-temperature flue gas. Since the fuse 8 is small in volume and low in metal heat capacity, if it is only heated by contacting the surrounding hot air or radiant heat, the heat transfer efficiency is relatively low and there is a certain lag in the fusing response. For this reason, in this embodiment, a circle of aluminum alloy heat conducting sheets 9 is arranged outside the fuse 8 and made into a fan-shaped structure. This can not only increase the contact area with the outside air and heat source, but also the aluminum alloy material has good heat conduction performance, which can absorb a large amount of heat generated by the fire source in the first time and conduct the heat to the fuse 8 efficiently; and the fan-shaped structure can quickly capture the heat in multiple directions to form a heat transfer surrounding effect. When the heat absorbed by the heat conducting sheet 9 accumulates to a certain extent, the fuse 8 can be heated to the melting point to realize the fusing of the fuse 8, thereby improving the release speed of the fire extinguishing powder 6, shortening the time delay from temperature sensing to action of the fire extinguishing device, and enhancing the sensitivity of the fire extinguishing tank.

[0041] As Figure 2 shown, further, the sliding limiting member 4 is a split pin. The split pin is used to limit the split cone 3 from slipping off the slide rail bracket 2. When the bottom cover 13 slides downward with the split cone 3 to a set position, the split pin can contact the bottom structure of the chute 20 to form a limit, thereby preventing it from continuing to slide down, keeping the bottom cover 13 in the open position without falling off. At the same time, when the split pin contacts the bottom of the chute 20, it will vibrate, so as to loosen the fire extinguishing powder 6 deposited on the surface of the split cone 3 and then sprinkle it down, so as to realize the complete release of the fire extinguishing powder 6, improve the fire extinguishing effect, and avoid the bottom cover 13 and the split cone 3 falling onto the fire source to interfere with the fire extinguishing or generate new safety hazards.

[0042] As Figure 2 and Figure 6 shown, further, it further includes a V-shaped pad 21. The V-shaped pad 21 is arranged at the bottom of the chute 20. The V-shaped pad 21 is used to abut against the sliding limiting member 4 when the sliding limiting member 4 slides to the bottom of the chute 20. Since the V-shaped structure has a certain guiding and positioning function, the sliding limiting member 4 can be stably fixed at the bottom position and can provide a small impact force to the sliding limiting member 4, avoiding the position deviation of the split cone 3 when shaking the fire extinguishing powder 6 up and down, thereby improving the guiding effect of the split cone 3 on the fire extinguishing powder 6 and the uniformity of spraying.

[0043] As Figure 1 and Figure 7As shown, further, an O-ring 14 is included, and the O-ring 14 is provided on the bottom cover 13. The O-ring 14 is used to seal the gap between the bottom cover 13 and the bottom opening of the tank body 11. When the bottom cover 13 is fixed to the bottom of the tank body 11 by connecting bolts 7 and the fuse 8, the O-ring is appropriately compressed, thereby forming a tightly fitting sealing layer between the sealing surfaces, preventing moisture, oil smoke or dust in the outside air from entering the accommodating cavity along the gap, which causes the fire extinguishing dry powder 6 to absorb moisture and agglomerate, and its fluidity becomes poor, affecting the subsequent spraying effect.

[0044] Furthermore, the fuse 8 is made of a low-melting-point alloy or a high-molecular polymer material. In this way, the fuse 8 can quickly melt and fail in a high-temperature environment, thereby realizing automatic triggering of the fire extinguishing tank; when the fire extinguishing tank is in normal state, the fuse 8 can firmly lock the bottom cover 13 at the bottom of the tank body 11, so that the internal structure of the tank body 11 is in a closed state, and compress the spring 5 to store energy; but once a fire occurs, the external high temperature is transmitted to the fuse 8 through the heat conducting plate 9. When the temperature reaches its melting point, the fuse 8 quickly melts and disengages from the connecting bolt 7, and the bottom cover 13 is opened under the push of the spring 5, thereby releasing the fire extinguishing dry powder 6 to complete the spraying action; low-melting-point alloys or high-molecular polymer materials have fast response speed and good thermal sensitivity, such as bismuth-tin alloy, lead-tin alloy or nylon, etc., and the material and ratio are selected according to different usage environments such as kitchens and distribution rooms, so as to control the temperature of triggering the fuse, so that the fire extinguishing tank can respond to the trigger in time in the early stage of the fire to release the fire extinguishing agent, thereby improving the fire extinguishing efficiency and reducing the risk of fire spread.

[0045] like Figure 1 As shown, further, the angle between the conical surface of the diverter cone 3 and the horizontal line is 30-50 degrees. During the release process, the fire extinguishing powder 6 will first contact the conical surface of the diverter cone 3. The angle between the conical surface and the horizontal line will affect the spraying and diffusion effect of the fire extinguishing powder 6. If the angle is too small, the conical surface will be too flat, which will affect the spraying speed of the fire extinguishing powder 6. If the angle is too large, the conical surface will be too steep, and the fire extinguishing powder 6 will easily concentrate in a certain position, resulting in a small spraying surface and affecting the fire extinguishing effect. Controlling the angle between 30-50 degrees can take into account the spraying speed and coverage area of the fire extinguishing powder 6, meeting the fire extinguishing needs in a small space. It should be noted that in this embodiment, the angle between the conical surface of the diverter cone 3 and the horizontal line is 45 degrees.

[0046] like Figure 1 and Figure 5As shown in the figure, further, a shaping metal sheet 112 is provided at the top of the tank body 11, and a reinforcing rib structure 113 is provided on the inner top wall of the tank body 11. In this fire extinguishing tank, the spring 5 is arranged outside the slide rail bracket 2, its upper end is tightly abutted against the top of the tank body 11, and the lower end abuts against the flow dividing cone 3. The spring 5 is in a continuously compressed state, thus applying a long-term reverse thrust to the top of the tank body 11. If the rigidity of the top of the tank body 11 is insufficient, local bulging or deformation is likely to occur at the top of the tank body 11 after long-term stress, causing a slight deviation at the connection part, thereby affecting the sealing fit between the bottom cover 13 and the bottom opening of the tank body 11 and even causing a leakage risk; by setting the shaping metal sheet 112, the top of the tank body 11 can be reinforced and shaped to keep a stable structure during installation, transportation and use; and the reinforcing rib structure 113 can enhance the compressive and anti-deformation capabilities of the top area of the tank body 11. The two cooperate with each other to inhibit the deformation caused by the fatigue resistance of the stress point on the bottom surface of the tank body 11 and avoid the sealing failure caused by the displacement of the product connection.

[0047] As Figure 1 , Figure 2 and Figure 7 shown in the figure, further, the flow dividing cone 3 is detachably connected to the bottom cover 13. A positioning post 32 is provided at the bottom of the flow dividing cone 3, and a positioning sleeve 131 adapted to be connected to the positioning post 32 is provided on the top of the bottom cover 13. In this way, the flow dividing cone 3 and the bottom cover 13 can be accurately aligned during the assembly process, thereby improving the assembly efficiency of the fire extinguishing tank.

[0048] As Figure 1 and Figure 5 shown in the figure, further, a positioning convex block 111 extending downward is provided on the inner top wall of the tank body 11. The positioning convex block 111 is used for sleeving and connecting with the top of the spring 5 to fixedly install the spring 5, prevent the spring 5 from shifting or dislocating during the triggering moment, avoid jamming of the flow dividing cone 3 during the downward movement, and improve the working stability of the fire extinguishing tank.

[0049] As Figure 1 and Figure 4As shown in the figure, further, the installation connecting member 12 is a magnetic attraction assembly. The magnetic attraction assembly includes a connecting rod 121, a magnet 122, and an installation cover 123. The bottom of the connecting rod 121 is connected to the top of the tank body 11. A through hole 1231 is provided in the middle of the installation cover 123. The aperture of the through hole 1231 is larger than the diameter of the connecting rod 121, so that the connecting rod 121 can swing relative to the installation cover 123. A stop block 1211 is provided at the top of the connecting rod 121. The stop block 1211 is used to prevent the connecting rod 121 from slipping out of the through hole 1231. A receiving groove 1232 is provided on the top surface of the installation cover 123. The magnet 122 is arranged in the receiving groove 1232. The magnet 122 is used to magnetically attract and fix the tank body 11. Since the fire extinguishing tank needs to be installed above the fire source, such as above the kitchen stove, on the top of the power distribution cabinet, or on the inner top surface of the vehicle cabin, etc., the space at these positions is limited, and the installation surface may be an inclined surface or an irregular metal surface. If rigid fixing methods such as screws or buckles are used, not only the operation is cumbersome, but it is also difficult to adjust the dry powder spraying angle of the fire extinguishing tank. By setting the clearance fit structure between the connecting rod 121 and the through hole 1231, the connecting rod 121 can have a certain degree of swing freedom in the installation cover 123. When the fire extinguishing tank is adsorbed on a non-horizontal installation surface, the connecting rod 121 can automatically align in the through hole 1231, so that the tank body 11 is naturally vertically suspended under the action of gravity and maintains a stable posture, enabling the fire extinguishing dry powder 6 to be sprayed straight downwards, avoiding deviation, and thus improving the stability of the fire extinguishing effect. This structure can not only achieve quick disassembly and assembly and adapt to different installation environments, but also automatically correct the angle in the inclined surface installation scenario, so that the fire extinguishing tank is always in the best vertical state, effectively enhancing the versatility and applicability of the fire extinguishing tank.

[0050] As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic fire extinguishing tank, characterized in that, It includes a tank body, an installation connecting piece, a bottom cover, a slide rail bracket, a diversion cone, a sliding limit piece, a spring, fire extinguishing dry powder, connecting bolts and a fuse; There is an accommodation chamber in the tank body. The slide rail bracket is arranged in the tank body. A chute is provided inside the slide rail bracket. A connecting ear plate is provided at the top of the diversion cone. The connecting ear plate is arranged in the chute through the sliding limit piece, so that the diversion cone can move along the extension direction of the chute; A slide rail channel is provided in the middle of the diversion cone. The bottom of the slide rail bracket is located in the slide rail channel. The bottom of the diversion cone is connected to the bottom cover. The bottom cover is arranged at the bottom of the tank body. The bottom cover is used to seal the opening at the bottom of the tank body; The spring is sleeved outside the slide rail bracket. The top of the spring abuts against the inner top wall of the tank body. The bottom of the spring abuts against the top of the diversion cone. The spring is used to apply a downward pushing elastic force to the diversion cone; The connecting bolts are arranged at the bottom of the slide rail bracket. The connecting bolts pass through the bottom cover and are connected to the fuse. The fuse is used to fit and fix the bottom cover to the bottom of the tank body; The fire extinguishing dry powder is filled in the accommodation chamber above the diversion cone. When the fuse is heated and melted, the diversion cone and the bottom cover move downward under the action of the elastic force of the spring to open the bottom opening of the tank body, so that the fire extinguishing dry powder is ejected downward to achieve fire extinguishing.

2. The automatic fire extinguishing tank according to claim 1, characterized in that, It also includes a heat conducting sheet. The heat conducting sheet is made of aluminum alloy or stainless steel. The heat conducting sheet is in a fan-shaped structure. The heat conducting sheet is sleeved outside the fuse. The heat conducting sheet is used to transfer external heat to the fuse.

3. The automatic fire extinguishing tank according to claim 1, characterized in that, The sliding limit piece is an open pin. The open pin is used to prevent the diversion cone from slipping off the slide rail bracket.

4. The automatic fire extinguishing tank according to claim 3, characterized in that, It also includes a V-shaped pad. The V-shaped pad is arranged at the bottom of the chute. The V-shaped pad is used to abut against the sliding limit piece when the sliding limit piece slides to the bottom of the chute.

5. The automatic fire extinguishing tank according to claim 1, characterized in that, It also includes an O-ring. The O-ring is arranged on the bottom cover. The O-ring is used to seal the gap between the bottom cover and the opening at the bottom of the tank body.

6. The automatic fire extinguishing tank according to claim 1, characterized in that, The fuse is made of a low melting point alloy or a high molecular polymer material.

7. The automatic fire extinguishing tank according to claim 1, characterized in that, The included angle between the conical surface of the diversion cone and the horizontal line is 30-50°.

8. The automatic fire extinguishing tank according to claim 1, characterized in that, A shaped metal sheet is provided at the top of the tank body. A reinforcing rib structure is provided on the inner top wall of the tank body.

9. The automatic fire extinguishing tank according to claim 1, characterized in that, A positioning convex block extending downward is provided on the inner top wall of the tank body. The positioning convex block is used to be sleeved and connected with the top of the spring to fixedly install the spring.

10. The automatic fire extinguishing tank according to claim 1, characterized in that, The installation connecting piece is a magnetic attraction assembly. The magnetic attraction assembly includes a connecting rod, a magnet and an installation cover; The bottom of the connecting rod is connected to the top of the tank body. A through hole is provided in the middle of the installation cover. The diameter of the through hole is larger than the diameter of the connecting rod, so that the connecting rod can swing relative to the installation cover. A stop block is provided at the top of the connecting rod, and the stop block is used to prevent the connecting rod from slipping out of the through hole; A receiving groove is provided on the top surface of the installation cover. The magnet is arranged in the receiving groove. The magnet is used to magnetically attract and fix the tank body.

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