A fireproof foam fire extinguishing device

Abstract

This invention relates to the field of foam fire extinguishing technology, and more particularly to a fire-resistant foam fire extinguishing device that solves the problem of existing fire extinguishers requiring manual activation and having poor extinguishing effects. A fire-resistant foam fire extinguishing device includes a cart platform with several gas tank slots fixedly connected to the top. Each gas tank slot contains a gas storage tank, and the outlet of each gas storage tank is connected to a first four-way pipe. The top of the first four-way pipe is connected to a second four-way pipe, and the top of the second four-way pipe is connected to a vent pipe. A fireproof plate is fixedly connected to the top of the cart platform away from the edge of the gas tank slots. An air bladder made of fire-resistant rubber is fixedly connected to the outer edge of the fireproof plate. A venting groove is formed inside the fireproof plate, and the vertical cross-section of the venting groove is inverted T-shaped. This invention features a high-temperature triggering function; the user only needs to push the device to the fire source for automatic triggering, eliminating the need for manual operation and greatly increasing personnel safety.

Description

Technical Field

[0001] This invention relates to the field of foam fire extinguishing technology, and in particular to a fireproof foam fire extinguishing device. Background Technology

[0002] Foam fire suppression is a common method of extinguishing fires. Its main principle is to cover the surface of the burning material with foam, which isolates oxygen, cools the area, and inhibits the combustion reaction. For oil fires in petrochemical plants, such as tank farms, oil depots, and gas stations, foam fire suppression is one of the primary methods. When a large oil tank catches fire, a foam fire suppression system can spray a large amount of foam onto the surface of the oil inside the tank, quickly controlling the fire and preventing further combustion and spillage.

[0003] Traditional foam fire extinguishers are mainly divided into two categories. One is the portable foam fire extinguisher, which is small and portable, and can be very effective in dealing with small-scale fires. It is extremely easy to operate, requiring only simple training to use. Due to its small size, it is also quite convenient to store, so it has been widely used in densely populated areas with relatively limited space, such as shopping malls and residences, becoming a common piece of equipment in the fire protection facilities of these places, silently contributing to the protection of people's lives and property.

[0004] Another type is the wheeled foam fire extinguisher, which is relatively large and inconvenient to move. However, its large capacity makes it irreplaceable in large spaces such as factories and warehouses, or in areas where fires may spread rapidly. Once a fire breaks out, it can continuously and stably provide a large amount of foam extinguishing agent, effectively controlling the development of the fire and buying valuable time for fire rescue. It is a key link in the fire safety system for such large spaces.

[0005] However, among existing foam fire extinguishers, portable foam extinguishers are ineffective in dealing with large fires, and their inherent limitations make them unsuitable for effectively combating dense smoke. Their primary function is fire suppression, and they cannot adequately address the harmful gases in dense smoke, preventing them from responding promptly to fires with heavy smoke. Therefore, their fire-fighting and damage prevention capabilities are significantly reduced, hindering their full effectiveness. While wheeled foam extinguishers can extinguish fires over long distances and cover large areas, they are usually too large to be used in densely populated areas like shopping malls or residences with limited space, thus failing to fulfill their intended purpose. Therefore, there is an urgent need for a fire-resistant foam extinguisher to fill the gap in fire-fighting equipment for densely populated areas and large smoke fires. Summary of the Invention

[0006] The purpose of this invention is to provide a fireproof foam fire extinguishing device, which solves the problems of existing technologies such as portable fire extinguishers requiring close-range fire extinguishing, smoke posing a health hazard to firefighters, wheeled fire extinguishers being generally large and difficult to enter relatively limited spaces, and existing foam fire extinguishers being unable to isolate personnel from dense smoke.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A fire-resistant foam extinguishing device includes a plurality of gas tank slots fixedly connected to the top of a trolley panel. Each gas tank slot contains a gas storage tank. The outlet of each gas storage tank is connected to a first four-way pipe. The top of the first four-way pipe is connected to a second four-way pipe, and the top of the second four-way pipe is connected to a vent pipe. A fireproof plate is fixedly connected to the top of the trolley panel away from the edge of the gas tank slots. An airbag is fixedly connected to the outer edge of the fireproof plate. The airbag is made of fire-resistant rubber. A venting groove is formed inside the fireproof plate. The venting groove has an inverted T-shaped vertical cross-section. The air inlet of the venting groove is connected to the vent pipe. The three outlets of the venting groove penetrate the fireproof plate and are connected to the inner cavity of the airbag. The second four-way pipe is connected to a water... One end of the horizontal section is connected to a trigger pipe, and the end of the trigger pipe away from the second four-way pipe is connected to a trigger mechanism. The trigger mechanism is installed on the top of the trolley board, and a foam storage box is fixedly connected to the top of the trolley board. A foam delivery pipe is connected to the top of the foam storage box, and the end of the foam delivery pipe away from the foam storage box passes through a fireproof board and connects to a foam spray box. A nozzle is connected to one side of the foam spray box, and the foam spray box is fixedly connected to the fireproof board. A through-hole piston is installed in the inner cavity of the horizontal end of the second four-way pipe. The through hole of the through-hole piston is opened in the middle part of the through-hole piston and is vertical. When not triggered, the unopened part of the through-hole piston is located at the top of the first four-way pipe.

[0009] Preferably, the triggering mechanism includes a support plate, a trigger gas cylinder, a support rod, and a trigger groove. A drop groove is formed inside the fireproof plate, a counterweight is placed at the top of the drop groove, and a fusible alloy is placed at the bottom of the counterweight. A trigger groove is formed on the bottom side of the fireproof plate near the gas cylinder groove, and the top of the trigger groove communicates with the drop groove. A support plate is placed at the bottom of the drop groove, and a support plate bracket is fixedly connected to the bottom of the support plate. A pin is fixedly connected to the bottom of the support plate bracket. A support rod is fixedly connected to the top of the trolley plate, and a rotating rod is rotatably connected to the top of the support rod via a pin. A groove is formed on one side of the rotating rod, and the rotating rod is movably connected to the pin at the bottom of the support plate bracket via the groove. A gas cylinder plug is fixedly connected to the end of the rotating rod away from the support plate bracket. The rotating rod is elastically connected to the top of the trigger groove via a second tension spring. A trigger gas cylinder is installed on the top of the trolley plate through the gas cylinder groove, and the gas outlet of the trigger gas cylinder and the gas cylinder plug are interference-fitted.

[0010] Preferably, the top of the trigger gas tank is connected to one end of the trigger pipe, and the trigger pipe and the vent pipe are fixedly connected to the top of the foam storage box through a pipe fixing bracket.

[0011] Preferably, the foam storage box is U-shaped, the inner cavity of the foam storage box is equipped with a partition, a connecting plate is fixedly connected to one side of the partition, a piston support is fixedly connected to the end of the connecting plate away from the partition, and a partition piston is fixedly connected to one end of the piston support.

[0012] Preferably, the bottom of the trigger pipe is connected to a delivery pipe, the end of the delivery pipe away from the trigger pipe passes through the foam storage box, and a piston groove is opened on one side of the delivery pipe located in the inner cavity of the foam storage box. The piston groove of the delivery pipe and the connecting plate are in clearance fit, and the partition piston and the delivery pipe are in transition fit.

[0013] Preferably, a jet box is installed on the top of the fireproof board, the jet box penetrates the fireproof board, the bottom of the jet box located on the outside of the fireproof board is connected to a nozzle, a valve bracket is fixedly connected to the top of the jet box located on the inside of the fireproof board, a T-shaped hole is opened at the valve bracket of the jet box, a valve plate is provided at the T-shaped hole, and the valve plate is elastically connected to the valve bracket through a first tension spring.

[0014] Preferably, the top of the trolley board is equipped with several protective shells, one of which is rotatably connected to an adjacent protective shell by a pin, and the other adjacent protective shell is connected by a snap-fit.

[0015] Preferably, omnidirectional wheels are installed at the four corners of the bottom of the trolley board, a trolley handle is fixedly connected to the top of the trolley board near the edge of the gas tank, and a pressure gauge is installed on the outer wall of the first four-way pipe.

[0016] The present invention has the following beneficial effects:

[0017] This device features a trolley-style design, which greatly enhances the ease of operation. When not in use and not deployed, the device occupies minimal space, making it perfectly suited for densely populated but relatively confined environments such as shopping malls and residential areas, allowing for flexible placement. Furthermore, the device uses fire-retardant silicone gas inflation; in the event of a fire, the gasbags rapidly inflate and effectively block passageways. It effectively prevents dense smoke from spreading in the direction of evacuation, and the fireproof panel facing the fire source will spray fire-extinguishing foam to reduce or even extinguish the fire. Simultaneously, carbon dioxide triggers the gasbag inflation, and excess gas is sprayed downwards from the fireproof panel surface to cool it, significantly enhancing its fire resistance and extending its lifespan. The device also features an automatic high-temperature trigger function, requiring no manual operation. In the event of a fire, users only need to push the device near the fire source and then quickly evacuate the scene. This feature fundamentally reduces the risks faced by personnel during firefighting and greatly minimizes the possibility of casualties, building a solid and reliable barrier to protect people's lives and property. This device integrates high-temperature triggering, fire prevention, prevention of dense smoke spread, foam fire extinguishing, and jet cooling, greatly facilitating its use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a schematic cross-sectional view of the pipeline structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the inflatable structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the triggering mechanism structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the partition structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the pipeline structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the jet box structure of the present invention;

[0027] Figure 9 This is an enlarged schematic diagram of part of the triggering mechanism of the present invention;

[0028] Figure 10 This is an enlarged schematic diagram of the gas cylinder plug structure of the present invention;

[0029] Figure 11 This is an enlarged schematic diagram of the through-hole piston structure of the present invention.

[0030] In the diagram: 1. Airbag; 2. First four-way pipe; 3. Fireproof board; 4. Air jet box; 5. Trolley board; 6. Casters; 7. Trolley handle; 8. Buckle; 9. Protective shell; 10. Vent pipe; 11. Foam delivery pipe; 12. Trigger pipe; 13. Foam storage box; 14. Air tank trough; 15. Air tank; 16. Foam spray box; 17. Pipe fixing bracket; 18. T-hole; 19. Trigger mechanism; 1901. Support plate; 1902. Trigger air tank; 1903. Support rod; 1904. Trigger slot ; 1905, Gas cylinder plug; 1906, Counterweight; 1907, Pallet bracket; 1908, Fusible alloy; 1909, Second tension spring; 1910, Drop groove; 1911, Rotating rod; 20, Second four-way pipe; 21, Baffle plate; 22, Pressure gauge; 23, Through-hole piston; 24, Vent groove; 25, Piston groove; 26, Valve bracket; 27, First tension spring; 28, Valve plate; 29, Nozzle; 30, Connecting plate; 31, Piston support; 32, Baffle piston; 33, Delivery pipe. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] Example 1: Refer to Figure 1-47 and 11, a fireproof foam fire extinguishing device, including a trolley board 5, with several gas tank slots 14 fixedly connected to the top of the trolley board 5. Each gas tank slot 14 contains a gas storage tank 15, which is a liquid carbon dioxide gas tank. The number of gas storage tanks 15 can be increased or decreased depending on the application location and environment. When the application location is a large space such as a warehouse or factory, more gas storage tanks 15 can be added and placed in the reserved gas tank slots 14, and connected to a reserved valve on a first four-way pipe 2. The outlet of each gas storage tank 15 is connected to the first four-way pipe 2, which connects several gas storage tanks 15 to a second four-way pipe 20. The top of the first four-way pipe 2 is connected to a second four-way pipe 20, and the top of the second four-way pipe 20 is connected to a vent pipe 10. A fireproof board 3 is fixedly connected to the top of the trolley board 5 away from the edge of the gas tank slots 14. The fireproof board 3 is made of calcium silicate board, which is an A1-grade non-combustible material. Its structure is relatively stable, capable of withstanding high temperatures without burning or deforming, and possesses good heat insulation capabilities. An airbag 1 is fixedly connected to the outer edge of the fireproof board 3. The airbag 1 is made of fire-resistant rubber, specifically silicone rubber. The main chain of silicone rubber consists of silicon-oxygen bonds, which have high chemical bond energy, giving silicone rubber excellent high-temperature resistance. By adding special flame retardants, such as aluminum hydroxide and decabromodiphenyl ether, its fire resistance can be further improved. Furthermore, silicone rubber maintains good elasticity and flexibility at high temperatures.The fireproof board 3 has a ventilation groove 24 inside. The vertical cross-section of the ventilation groove 24 is inverted T-shaped. The inverted T-shaped ventilation groove 24 allows carbon dioxide to enter the airbag 1 from three directions, which facilitates the carbon dioxide to inflate the airbag 1 more quickly. The air inlet of the ventilation groove 24 is connected to the ventilation pipe 10, and the three air outlets of the ventilation groove 24 pass through the fireproof board 3 and are connected to the inner cavity of the airbag 1. One horizontal end of the second four-way pipe 20 is connected to a trigger pipe 12, and the end of the trigger pipe 12 away from the second four-way pipe 20 is connected to a trigger mechanism 19. The trigger mechanism 19 can realize the function of automatic triggering at high temperature. The specific triggering method is described below. The trigger mechanism 19 is installed on the top of the trolley board 5. A foam storage box 13 is fixedly connected to the top of the trolley board 5. A foam delivery pipe 11 is connected to the top of the foam storage box 13. 1. Foam can be delivered to the foam spraying box 16. The end of the foam delivery pipe 11 away from the foam storage box 13 passes through the fireproof plate 3 and is connected to the foam spraying box 16. A nozzle 29 is connected to one side of the foam spraying box 16. The nozzle 29 is set in front and can effectively spray foam forward to suppress the fire. The foam spraying box 16 is fixedly connected to the fireproof plate 3. A through-hole piston 23 is installed in the inner cavity of the horizontal end of the second four-way pipe 20. The through hole of the through-hole piston 23 is opened in the middle part of the through-hole piston 23 and is vertical. When not triggered, the unopened part of the through-hole piston 23 is located at the top of the first four-way pipe 2. Since the unopened part of the through-hole piston 23 is located at the top of the first four-way pipe 2, the gas in the gas tank 15 will be blocked by the through-hole piston 23 at the first four-way pipe 2 and will not continue to flow into the vent pipe 10.

[0033] Example 2: Refer to Figure 5 , 9The triggering mechanism 19 includes a support plate 1901, a trigger gas cylinder 1902, a support rod 1903, and a trigger groove 1904. The fireproof plate 3 has a drop groove 1910 inside. A counterweight 1906 is provided at the top of the drop groove 1910. The counterweight 1906 is made of cast iron, which can reduce costs while ensuring its weight. A fusible alloy 1908 is provided at the bottom of the counterweight 1906. One side of the fusible alloy 1908 penetrates through the fireproof plate 3, exposing part of the alloy. The exposed fusible alloy 1908 can accept the ambient temperature more quickly, so that the fusible alloy 1908 can be accurately triggered when needed.The 1908 fusible alloy is a bismuth-based fusible alloy, a new type of fusible alloy. Its main components are bismuth, tin, and indium. Adjusting the proportions of each metal according to different locations and tasks allows the melting point of the 1908 fusible alloy to range from 47℃ to 183℃. The specific metal configuration can be tailored to different application scenarios. For example, in high-temperature environments such as factories, a fusible alloy with a higher melting point can be used, while in normal-temperature environments, such as shopping malls, a fusible alloy with a lower melting point can be used. The fireproof plate 3 has a trigger groove 1904 at its bottom near the gas tank 14. The top of the trigger groove 1904 is connected to the drop groove 1910. A support plate 1901 is provided at the bottom of the drop groove 1910. A support plate bracket 1907 is fixedly connected to the bottom of the support plate 1901. A pin is fixedly connected to the bottom of the support plate bracket 1907. A support rod 1903 is fixedly connected to the top of the trolley plate 5. A rotating rod 1911 is rotatably connected to the pin at the top of the support rod 1903. A groove is provided on one side of the rotating rod 1911. The rotating rod 1911 is movably connected to the pin at the bottom of the support plate bracket 1907 through the groove. When the support plate 1901 falls, it will drive the rotating rod 1911 to rotate. However, since the support plate 1901 is vertically lowered... The rotating rod 1911 is not always in the same position on the rotating rod 1911, so the rotating rod 1911 needs to be slotted to realize its rotation function. The end of the rotating rod 1911 away from the support plate bracket 1907 is fixedly connected to the gas canister plug 1905. The rotating rod 1911 is elastically connected to the top of the trigger groove 1904 through the second tension spring 1909. By setting the position of the support rod 1903, the support rod 1903 is made closer to the side of the gas canister plug 1905, increasing the torque on the side of the support plate 1901. The tension of the second tension spring 1909 firmly presses the gas canister plug 1905 against the air outlet of the trigger gas canister 1902. The top of the trolley plate 5 is installed through the gas canister groove 14. There is a trigger gas tank 1902. The trigger gas tank 1902 does not need to store too much gas, so a helium gas tank with lower pressure is selected for the trigger gas tank 1902. The gas outlet of the trigger gas tank 1902 and the gas tank plug 1905 are interference fit to ensure that the gas tank plug 1905 is tightly sealed in the opening of the trigger gas tank 1902. The top of the trigger gas tank 1902 is connected to one end of the trigger pipe 12, and the other end of the trigger pipe 12 is connected to the second four-way pipe 20 to ensure that the gas in the trigger gas tank 1902 can push the through-hole piston 23 after the trigger mechanism 19 is triggered. The trigger pipe 12 and the vent pipe 10 are fixedly connected to the top of the foam storage box 13 through the pipe fixing bracket 17.

[0034] Example 3: Refer to Figure 1 , 2In embodiments 6, 7, and 2, the foam storage box 13 is U-shaped. The U-shape increases the volume of the foam storage box 13 without affecting the triggering mechanism 19. A partition 21 is installed inside the foam storage box 13. The foam storage box 13 stores two liquids: aluminum sulfate solution and sodium bicarbonate solution. When the two liquids are mixed, aluminum sulfate and sodium bicarbonate undergo a double hydrolysis reaction, producing foam 7-10 times their own volume. Because the amounts of the two liquids required for the double hydrolysis reaction are different, the partition 21 is not placed in the middle of the foam storage box 13. When foam is not needed, the two solutions cannot be mixed. Therefore, the partition 21, along with existing technologies such as sealing rubber, is used to separate the two liquids. A connecting plate 30 is fixedly connected to one side of the partition 21. A piston support 31 is fixedly connected to the end of the connecting plate 30 away from the partition 21. A partition piston 32 is fixedly connected to one end of the piston support 31. The triggering pipe... The bottom of the trigger pipe 12 is connected to a delivery pipe 33. The delivery pipe 33 is located closer to the second four-way pipe 20 than the untriggered position of the through-hole piston 23 inside the trigger pipe 12. This ensures that the gas in the trigger pipe 12 will first push the through-hole piston 23 to the designated position before being connected to the foam storage box 13 through the delivery pipe 33. The end of the delivery pipe 33 away from the trigger pipe 12 passes through the foam storage box 13, and a piston groove 25 is opened on one side of the delivery pipe 33 inside the foam storage box 13. The piston groove 25 of the delivery pipe 33 is clearance-fitted with the connecting plate 30. The partition piston 32 is transition-fitted with the delivery pipe 33. The remaining gas in the trigger gas tank 1902 will enter the foam storage box 13 through the delivery pipe 33, pushing the partition piston 32 and thus causing the partition 21 to move backward, mixing the two liquids in the foam storage box 13. At the same time, the remaining gas will also agitate the liquids in the foam storage box 13 to accelerate the mixing of the two liquids and generate foam faster.

[0035] Example 4: Refer to Figure 1 , 24, 7, and 8, a jet box 4 is installed on the top of the fireproof board 3. The jet box 4 penetrates the fireproof board 3. The bottom of the jet box 4 located on the outside of the fireproof board 3 is connected to a nozzle 29. The nozzle 29 is located directly below and can spray the remaining carbon dioxide onto the fireproof board 3 to provide a cooling effect and isolate the oxygen on the surface of the fireproof board 3, further enhancing the flame retardant ability of the fireproof board 3. A valve bracket 26 is fixedly connected to the top of the jet box 4 located on the inside of the fireproof board 3. A T-shaped hole 18 is opened at the valve bracket 26 of the jet box 4. A valve plate 28 is set at the T-shaped hole 18. The valve plate 28 is elastically connected to the valve bracket 26 through a first tension spring 27. The setting of the first tension spring 27 can realize that when the airbag 1 reaches the surrounding wall, the pressure inside the airbag 1 will gradually increase. When the pressure is greater than the tension provided by the first tension spring 27, the valve plate 28 will be forced open, and the gas will enter the jet box 4 and finally be sprayed out. When the gas inside the gas tank 15 is exhausted, the tension provided by the first tension spring 27 is greater than the pressure inside the airbag 1, and the valve plate 28 will close, ensuring that the airbag 1 will be in the deployed state even when there is no gas inside the gas tank 15, thus ensuring the device's smoke isolation effect.

[0036] Example 5: Refer to Figure 1-4 The top of the trolley plate 5 is equipped with several protective shells 9, which can reduce damage and bumps to the device during storage. One of the protective shells 9 is rotatably connected to its adjacent protective shell 9 by a pin, and the other adjacent protective shell 9 is connected by a buckle 8. The buckle 8 can facilitate maintenance personnel to open the protective shell 9 for inspection and maintenance. The bottom of the trolley plate 5 is equipped with casters 6 at the four corners, which can facilitate users to quickly push the device to the fire source. The top of the trolley plate 5 is fixedly connected to the trolley handle 7 near the edge of the gas tank 14. The outer wall of the first four-way pipe 2 is equipped with a pressure gauge 22, which allows users and maintenance personnel to quickly understand the pressure inside the gas tank 15.

[0037] In summary:

[0038] Depending on the needs of different locations, different numbers of gas cylinders 15 can be placed in the gas cylinder tank 14. In the event of a fire, the user should quickly push the device to the fire source and evacuate immediately. The melting temperature of the fusible alloy 1908 on the top of the fireproof plate 3 is between 60°C and 200°C. Different melting points of fusible alloy 1908 can be selected according to the needs of different locations. When the temperature at the fusible alloy 1908 reaches its melting point, the fusible alloy 1908 will melt rapidly. The counterweight 1906 on top of the fusible alloy 1908 will slide down the drop groove 1910 under the action of gravity and finally hit the support plate 1901. The support plate 1901 will drive the rotating rod 1911 to rotate, thereby pulling out the gas cylinder plug 1905 and triggering the liquid carbon dioxide in the gas cylinder 1902 to move under pressure. When used, it will be quickly ejected, pushing the through-hole piston 23 backward along the trigger pipe 12. When the hole of the through-hole piston 23 moves to the top of the four-way pipe 2, a passage is formed between the four-way pipe 2 and the vent pipe 10. The liquid carbon dioxide in the gas storage tank 15 is also quickly ejected under pressure and filled into the airbag 1 through the vent pipe 10 and the vent groove 24 inside the fireproof plate 3. The airbag 1 is made of fire-resistant rubber, which is elastic and can be used for a long time at temperatures of 200°C to 300°C or even higher. Under some special formulas, the short-term temperature resistance can exceed 500°C. The airbag 1 expands rapidly. When the airbag 1 touches the surrounding walls, it stops inflating. Meanwhile, the gas tank 15 continues to release gas, causing the pressure inside the airbag 1 to gradually increase. When the pressure exceeds the tension of the first tension spring 27, the valve plate 28 is opened by the gas, allowing carbon dioxide to enter the jet box 4 and finally spray downwards at the nozzle 29, providing cooling for the front fireproof plate 3. Simultaneously, the remaining gas in the trigger gas tank 1902 flows downwards through the through-hole piston 23, passing through the foam trigger tube 33 and being blown into the foam storage box 13, pushing the partition piston 32. The partition piston 32 then moves the partition 21. At this time, the aluminum sulfate solution and sodium bicarbonate solution inside the foam storage box 13 come into contact and mix, producing foam. The remaining gas in the trigger gas tank 1902 continuously fills the foam storage box 13, accelerating the mixing of the aluminum sulfate solution and sodium bicarbonate solution. When aluminum sulfate solution and sodium bicarbonate solution are mixed, foam with a volume of 7 to 10 times their own volume will be generated. The foam will enter the foam spray box 16 through the foam delivery pipe 11 and finally be sprayed forward at the nozzle 29 to extinguish the fire source.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A fire-resistant foam fire extinguishing device, comprising a trolley board (5), characterized in that, The top of the trolley board (5) is fixedly connected to several gas tank slots (14). Gas tanks (15) are installed inside the gas tank slots (14). The outlet of the gas tank (15) is connected to a first four-way pipe (2). The top of the first four-way pipe (2) is connected to a second four-way pipe (20). The top of the second four-way pipe (20) is connected to a vent pipe (10). A fireproof plate (3) is fixedly connected to the top of the trolley board (5) away from the edge of the gas tank slots (14). An airbag (1) is fixedly connected to the outer edge of the fireproof plate (3). The airbag (1) is made of fire-resistant rubber. A venting groove (24) is opened inside the fireproof plate (3). 4) The vertical cross-section is inverted T-shaped. The air inlet of the ventilation groove (24) is connected to the ventilation pipe (10). The three outlets of the ventilation groove (24) pass through the fireproof plate (3) and are connected to the inner cavity of the airbag (1). One end of the second four-way pipe (20) in the horizontal direction is connected to the trigger pipe (12). The end of the trigger pipe (12) away from the second four-way pipe (20) is connected to the trigger mechanism (19). The trigger mechanism (19) is installed on the top of the trolley plate (5). A foam storage box (13) is fixedly connected to the top of the trolley plate (5). A foam delivery pipe (11) is connected to the top of the foam storage box (13). The foam delivery pipe (11) is away from the foam storage box (13). One end of the storage box (13) passes through the fireproof board (3) and is connected to the foam spray box (16). A nozzle (29) is connected to one side of the foam spray box (16). The foam spray box (16) is fixedly connected to the fireproof board (3). A through-hole piston (23) is installed in the inner cavity of the horizontal end of the second four-way pipe (20). The through hole of the through-hole piston (23) is opened in the middle part of the through-hole piston (23) and is vertical. When not triggered, the unopened part of the through-hole piston (23) is located at the top of the first four-way pipe (2). The foam storage box (13) is U-shaped. A partition (21) is installed in the inner cavity of the foam storage box (13). The partition (21) is one A connecting plate (30) is fixedly connected to the side. A piston support (31) is fixedly connected to the end of the connecting plate (30) away from the partition (21). A partition piston (32) is fixedly connected to the end of the piston support (31). A delivery pipe (33) is connected to the bottom of the trigger pipe (12). The end of the delivery pipe (33) away from the trigger pipe (12) passes through the foam storage box (13). A piston groove (25) is opened on one side of the inner cavity of the foam storage box (13). The piston groove (25) opened on the delivery pipe (33) is clearance-fitted with the connecting plate (30). The partition piston (32) is transition-fitted with the delivery pipe (33).

2. The fire-resistant foam fire extinguishing device according to claim 1, characterized in that, The triggering mechanism (19) includes a support plate (1901), a trigger gas cylinder (1902), a support rod (1903), and a trigger groove (1904). A drop groove (1910) is provided inside the fireproof plate (3). A counterweight (1906) is provided at the top of the drop groove (1910), and a fusible alloy (1908) is provided at the bottom of the counterweight (1906). A trigger groove (1904) is provided at the bottom of the fireproof plate (3) on the side near the gas cylinder slot (14). The top of the trigger groove (1904) is connected to the drop groove (1910). A support plate (1901) is provided at the bottom of the drop groove (1910). A support plate bracket (1907) is fixedly connected to the bottom of the support plate (1901). The bottom of the support plate bracket (1907) is fixedly connected to the support plate. A pin is fixedly connected to the top of the trolley plate (5), and a support rod (1903) is fixedly connected to the top of the support rod (1903). A rotating rod (1911) is rotatably connected to the top of the support rod (1903). A groove is opened on one side of the rotating rod (1911). The rotating rod (1911) is movably connected to the pin at the bottom of the tray bracket (1907) through the groove. An air tank plug (1905) is fixedly connected to the end of the rotating rod (1911) away from the tray bracket (1907). The rotating rod (1911) is elastically connected to the top of the trigger groove (1904) through a second tension spring (1909). A trigger air tank (1902) is installed on the top of the trolley plate (5) through the air tank groove (14). The air outlet of the trigger air tank (1902) and the air tank plug (1905) are interference fit.

3. A fire-resistant foam fire extinguishing device according to claim 2, characterized in that, The top of the trigger gas tank (1902) is connected to one end of the trigger pipe (12), and the trigger pipe (12) and the vent pipe (10) are fixedly connected to the top of the foam storage box (13) through the pipe fixing bracket (17).

4. A fire-resistant foam fire extinguishing device according to claim 1, characterized in that, A jet box (4) is installed on the top of the fireproof board (3). The jet box (4) penetrates the fireproof board (3). The bottom of the jet box (4) located on the outside of the fireproof board (3) is connected to a nozzle (29). A valve bracket (26) is fixedly connected to the top of the jet box (4) located on the inside of the fireproof board (3). A T-shaped hole (18) is opened at the valve bracket (26) of the jet box (4). A valve plate (28) is provided at the T-shaped hole (18). The valve plate (28) is elastically connected to the valve bracket (26) through a first tension spring (27).

5. A fire-resistant foam fire extinguishing device according to claim 1, characterized in that, The top of the trolley board (5) is equipped with several protective shells (9). One of the protective shells (9) is rotatably connected to its adjacent protective shell (9) by a pin, and the other adjacent protective shell (9) is connected by a buckle (8).

6. A fire-resistant foam fire extinguishing device according to claim 1, characterized in that, The trolley board (5) is equipped with casters (6) at the four corners at the bottom. The top of the trolley board (5) is fixedly connected to the edge of the gas tank (14). The outer wall of the first four-way pipe (2) is equipped with a pressure gauge (22).

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