Fireproof foam fire extinguishing device

Abstract

The invention relates to the technical field of foam fire extinguishing, in particular to a fireproof foam fire extinguishing device, and solves the problems that in the prior art, a fire extinguisher needs to be started manually, and the fire extinguishing effect is poor. A fireproof foam fire extinguishing device comprises a cart plate, a plurality of gas tank grooves are fixedly connected to the top of the cart plate, gas storage tanks are installed in the gas tank grooves, gas outlets of the gas storage tanks are communicated with first four-way pipes, the tops of the first four-way pipes are communicated with second four-way pipes, and the tops of the second four-way pipes are communicated with ventilation pipes. A fireproof plate is fixedly connected to the top of the cart plate away from the edge of the gas tank groove. The outer edge of the fireproof plate is fixedly connected with an air bag, the air bag is made of a fireproof rubber material, a vent groove is formed in the fireproof plate, and the vertical section of the vent groove is in an inverted T shape. The device has a high-temperature triggering function, a user only needs to push the device to a fire source, the device can be automatically triggered, manual operation of personnel is not needed, and the safety of the personnel is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of foam fire extinguishing, in particular to a fire-proof foam fire extinguishing device. Background Art

[0002] Foam fire extinguishing is a common fire extinguishing method. The main principle is to cover the surface of the burning object with foam to isolate oxygen, cool and inhibit the combustion reaction. For oil fires in oil tank areas, oil depots, gas stations and other places of petrochemical enterprises, foam fire extinguishing is one of the main fire extinguishing methods. When a fire occurs in a large oil tank, the foam fire extinguishing system can spray a large amount of foam onto the surface of the oil in the tank to quickly control the fire and prevent further combustion of the oil and the occurrence of flowing fire.

[0003] Traditional foam fire extinguishers are mainly divided into two categories. One is a portable foam fire extinguisher, which is small and portable and can be used to deal with small-scale fires. It is extremely easy to operate and only requires simple training to use. Because of its small size and convenient storage, it has been widely used in shopping malls, residential areas with dense crowds and relatively limited space, and has become a common equipment in fire-fighting facilities in these places, silently contributing to the safety of people's lives and property.

[0004] The other type is a cart-type foam fire extinguisher, which is relatively large and inconvenient to move. However, its large capacity makes it play an irreplaceable role in large-area spaces such as factories and warehouses, or areas where fires may spread rapidly. Once a fire occurs, it can continuously and stably provide a large amount of foam fire extinguishing agent, effectively controlling the development of the fire and buying precious time for fire rescue. It is a key link in the fire safety guarantee system of such large spaces.

[0005] However, among the existing foam fire extinguishers, the portable foam fire extinguisher seems to be powerless when dealing with some fires with larger fires, and the portable foam fire extinguisher is limited by its own functions and it is difficult to take effective measures to deal with thick smoke. Its main function is to extinguish fires, and the problem of harmful gases in thick smoke cannot be properly solved, resulting in the portable foam fire extinguisher being unable to deal with fires with larger smoke in the first time. Therefore, the fire extinguishing and loss prevention efficiency that the portable foam fire extinguisher should have played is greatly reduced, and it is difficult to fully exert its power. The cart-type foam fire extinguisher that can extinguish fires in a large range of coverage at a long distance is usually too large in size, and it is difficult to enter places such as shopping malls or residential areas where people are relatively dense and space is relatively limited, and it cannot play its due role. Therefore, a foam fire extinguisher with fire prevention function is urgently needed to fill the gap in fire-fighting equipment when large smoke fires occur in places where people are relatively dense. Summary of the invention

[0006] The purpose of the present invention is to provide a fire-proof foam fire extinguishing device, which solves the problem that portable fire extinguishers in the prior art need to be used for fire extinguishing at a close distance, smoke may cause harm to the bodies of fire extinguishers, and cart-type fire extinguishers are usually large in size and difficult to enter places with relatively limited space, and the existing foam fire extinguishers cannot isolate people from thick smoke.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A fireproof foam fire extinguishing device comprises a plurality of gas tank slots fixedly connected to the top of a cart plate, a gas tank is installed inside the gas tank slot, an air outlet of the gas tank is connected to a first four-way pipe, a second four-way pipe is connected to the top of the first four-way pipe, a ventilation pipe is connected to the top of the second four-way pipe, a fireproof board is fixedly connected to the top of the cart plate away from the edge of the gas tank slot, an air bag is fixedly connected to the outer edge of the fireproof board, the air bag is made of fire-resistant rubber material, a ventilation groove is opened inside the fireproof board, the vertical section of the ventilation groove is inverted T shape, the air inlet end of the ventilation groove is connected to the ventilation pipe, the three air outlet ends of the ventilation groove penetrate the fireproof board and are connected to the inner cavity of the air bag, and the second four-way pipe is connected to the inner cavity of the air bag. One end in the horizontal direction 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, and the trigger mechanism is installed on the top of the cart plate, and the top of the cart plate is fixedly connected to a foam storage box, and the top of the foam storage box is connected to a foam delivery pipe, and the end of the foam delivery pipe away from the foam storage box passes through the fireproof board and is connected to a foam spray box, and a nozzle is connected to one side of the foam spray box, and the foam spray box is fixedly connected to the fireproof board, and a through-hole piston is installed in the inner cavity of the horizontal end of the second four-way pipe, and the through-hole of the through-hole piston is opened in the middle part of the through-hole piston and is vertical, and the unopened part of the through-hole piston is located at the top of the first four-way pipe when it is not triggered.

[0009] Preferably, the trigger mechanism includes a supporting plate, a trigger gas tank, a support rod and a trigger groove, etc., the fireproof plate is provided with a drop groove inside, the top of the drop groove is provided with a counterweight block, and the bottom of the counterweight block is provided with a fusible alloy, the bottom of the fireproof plate close to the gas tank groove is provided with a trigger groove, the top of the trigger groove is connected with the drop groove, and a supporting plate is provided at the bottom of the drop groove, the bottom of the supporting plate is fixedly connected to the support plate bracket, the bottom of the support plate bracket is fixedly connected with a pin shaft, the top of the cart plate is fixedly connected with the support rod, the pin shaft at the top of the support rod is rotatably connected with a rotating rod, one side of the rotating rod is provided with a groove, the rotating rod is movably connected with the pin shaft at the bottom of the support plate bracket through the groove, and the rotating rod is fixedly connected with the gas tank plug at one end away from the support plate bracket. The rotating rod is elastically connected to the top of the trigger groove through a second tension spring, and a trigger gas tank is installed on the top of the cart plate through the gas tank groove, and the air outlet of the trigger gas tank is interference fit with the gas tank plug.

[0010] Preferably, the top of the trigger gas tank is communicated with one end of the trigger pipe, and the trigger pipe and the ventilation pipe are fixedly connected to the top of the foam storage box via a pipe fixing frame.

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

[0012] Preferably, a delivery pipe is connected to the bottom of the trigger pipe, and the end of the delivery pipe away from the trigger pipe passes through the foam storage box, and a piston groove is provided on the side of the delivery pipe located in the inner cavity of the foam storage box, and the piston groove of the delivery pipe is a clearance fit with the connecting plate, and the partition piston and the delivery pipe are a 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 box body of the jet box located on the outside of the fireproof board is connected to a nozzle, the top of the box body of the jet box located on the inside of the fireproof board is fixedly connected to a valve bracket, the jet box is provided with a T-shaped hole at the valve bracket, 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, a plurality of protective shells are installed on the top of the cart plate, one of the plurality of protective shells is rotatably connected to an adjacent protective shell via a pin, and another adjacent protective shell is connected to the adjacent protective shell via a snap-fit.

[0015] Preferably, universal wheels are installed at the four corners of the bottom of the cart plate, a cart handle is fixedly connected to the top of the cart plate near the edge of the gas tank slot, 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 adopts a cart-type design, which greatly improves the convenience of personnel operation. In addition, when not in operation, the device occupies a relatively small space when not unfolded, which makes it perfectly adaptable to crowded but relatively cramped environments such as shopping malls and residential areas, and can be flexibly placed. In addition, the device adopts fire-proof silicone inflation. When a fire occurs, the airbag can expand rapidly and effectively block the passage. It can effectively prevent the thick smoke from spreading in the direction of personnel evacuation. The fireproof board facing the fire source will also spray fire-extinguishing foam to reduce the fire or even extinguish the fire. At the same time, carbon dioxide is used to trigger the expansion of the airbag, and the excess gas will also be sprayed directly below the surface of the fireproof board to cool the front fireproof board, greatly enhancing the fireproof ability of the fireproof board and extending the service life of the fireproof board. This device also has the function of automatic high-temperature triggering, and no manual operation is required. Once a fire breaks out, the user only needs to push the device near the fire source and then quickly evacuate the scene. This feature fundamentally reduces the risks faced by personnel in the fire fighting process, greatly reduces the possibility of casualties, and builds a solid and reliable barrier to protect people's lives and property. This device integrates high temperature triggering, fire prevention, smoke diffusion prevention, foam fire extinguishing and jet cooling, which greatly facilitates the use of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

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

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

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

[0022] Figure 4 It is a schematic diagram of the inflation structure of the present invention;

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

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

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

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

[0027] Fig. 9 It is an enlarged schematic diagram of a part of the structure of the trigger mechanism of the present invention;

[0028] Fig.10 It is an enlarged schematic diagram of the gas tank plug structure of the present invention;

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

[0030] In the figure: 1, air bag; 2, first four-way pipe; 3, fireproof board; 4, spray box; 5, cart board; 6, universal wheel; 7, cart handle; 8, buckle; 9, protective shell; 10, ventilation pipe; 11, foam delivery pipe; 12, trigger pipe; 13, foam storage box; 14, gas tank slot; 15, gas storage tank; 16, foam spray box; 17, pipe fixing frame; 18, T-shaped hole; 19, trigger mechanism; 1901, support plate; 1902, trigger gas tank; 1903, support rod; 1904, trigger slot ; 1905, gas tank plug; 1906, counterweight; 1907, support plate bracket; 1908, fusible alloy; 1909, second tension spring; 1910, drop groove; 1911, rotating rod; 20, second four-way pipe; 21, partition; 22, pressure gauge; 23, through-hole piston; 24, ventilation groove; 25, piston groove; 26, valve bracket; 27, first tension spring; 28, valve plate; 29, nozzle; 30, connecting plate; 31, piston support; 32, partition piston; 33, delivery pipe. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] Example 1: Reference Figure 1-4, 7 and 11, a fire-proof foam fire extinguishing device, comprising a cart plate 5, a plurality of gas tank slots 14 are fixedly connected to the top of the cart plate 5, a gas tank 15 is installed inside the gas tank slot 14, the gas tank 15 is a liquid carbon dioxide gas tank, the number of the gas tank 15 can be increased or decreased according to the use place and environment, when the applicable place is a large space such as a warehouse or a factory building, the gas tank 15 can be added, placed in the reserved gas tank slot 14, and connected with the reserved valve of the first four-way pipe 2, the gas outlet of the gas tank 15 is connected with the first four-way pipe 2, the first four-way pipe 2 is used to connect a plurality of gas tanks 15 and a second four-way pipe 20, the top of the first four-way pipe 2 is connected with the second four-way pipe 20, the top of the second four-way pipe 20 is connected with the ventilation pipe 10, the top of the cart plate 5 away from the edge of the gas tank slot 14 is fixedly connected with a fireproof board 3, the fireproof board 3 is made of calcium silicate board, and the calcium silicate board is A1 grade non-combustible material. Its structure is relatively stable, can withstand high temperatures without burning or deformation, and has good heat insulation. The outer edge of the fireproof board 3 is fixedly connected with an airbag 1, and the airbag 1 is made of fire-resistant rubber material. The fire-resistant rubber used in the airbag 1 is made of silicone rubber. The main chain of silicone rubber is composed of silicon-oxygen bonds. This chemical bond energy is very high, which makes silicone rubber have excellent high temperature resistance. By adding special flame retardants, such as aluminum hydroxide, decabromodiphenyl ether, etc., its fire resistance can be further improved, and silicone rubber can maintain good elasticity and flexibility at high temperatures.A ventilation groove 24 is provided inside the fireproof board 3, and the vertical section of the ventilation groove 24 is inverted T-shaped. The inverted T-shaped ventilation groove 24 can allow carbon dioxide to enter the airbag 1 from three directions, so that carbon dioxide can prop up the airbag 1 more quickly. The air inlet end of the ventilation groove 24 is connected to the ventilation pipe 10, and the three air outlet ends of the ventilation groove 24 pass through the fireproof board 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, and 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 can realize the function of automatic high-temperature triggering. The specific triggering method is described below. The trigger mechanism 19 is installed on the top of the cart plate 5, and the top of the cart plate 5 is fixedly connected to a foam storage box 13. The top of the foam storage box 13 is connected to a foam delivery pipe 11, and the foam delivery pipe 1 1 can deliver foam to the foam spray box 16, one end of the foam delivery pipe 11 away from the foam storage box 13 passes through the fireproof board 3 and is connected to the foam spray box 16, one side of the foam spray box 16 is connected to a nozzle 29, and the nozzle 29 is arranged in the front and can effectively spray foam forward to achieve the purpose of suppressing the fire, the foam spray box 16 is fixedly connected to the fireproof board 3, and the inner cavity of the horizontal end of the second four-way pipe 20 is installed with a through-hole piston 23, 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, because 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 storage 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 ventilation pipe 10.

[0033] Example 2: Reference Figure 5 , 9and 10, the trigger mechanism 19 includes a supporting plate 1901, a trigger gas tank 1902, a support rod 1903 and a trigger groove 1904, etc., a drop groove 1910 is opened inside the fireproof plate 3, a counterweight block 1906 is arranged on the top of the drop groove 1910, and the counterweight block 1906 is made of cast iron, which can reduce the cost while ensuring its weight, and a fusible alloy 1908 is arranged on the bottom of the counterweight block 1906, one side of the fusible alloy 1908 penetrates the fireproof plate 3 to expose part of the alloy to the outside, and the exposed fusible alloy 1908 can accept the temperature of the environment more quickly, so that the fusible alloy 1908 can be accurately triggered when needed.The fusible alloy 1908 adopts a bismuth-based fusible alloy, which is a new type of fusible alloy. The main components are bismuth, tin and indium. The proportion of each metal can be adjusted according to the needs of different places and tasks to make the melting point range of the fusible alloy 1908 between 47°C and 183°C. The specific metal configuration ratio can be customized according to different usage scenarios. For example, in some high-temperature environments such as factories, fusible alloys with higher melting points can be configured for use, while in some places with normal temperature environments, such as shopping malls, some fusible alloys with lower melting points can be configured for use. A trigger groove 1904 is provided at the bottom of the fireproof board 3 near the gas tank groove 14. The top of the trigger slot 1904 is connected with the drop slot 1910, and the bottom of the drop slot 1910 is provided with a supporting plate 1901, and the bottom of the supporting plate 1901 is fixedly connected to a supporting plate bracket 1907, and the bottom of the supporting plate bracket 1907 is fixedly connected to a pin shaft, and the top of the trolley plate 5 is fixedly connected to a support rod 1903, and the top pin shaft of the support rod 1903 is rotatably connected to a rotating rod 1911, and a groove is provided on one side of the rotating rod 1911, and the rotating rod 1911 is movably connected to the pin shaft at the bottom of the supporting plate bracket 1907 through the groove. When the supporting plate 1901 falls, the rotating rod 1911 will be driven to rotate, but because the supporting plate 1901 is vertically downward The rotating rod 1911 is not always located at the same position of the rotating rod 1911, so the rotating rod 1911 needs to be grooved to realize its rotating function. The end of the rotating rod 1911 away from the support plate bracket 1907 is fixedly connected to the gas tank 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 closer to one side of the gas tank plug 1905, increasing the torque on one side of the supporting plate 1901, and cooperating with the pulling force of the second tension spring 1909 to firmly press the gas tank plug 1905 on the gas outlet of the trigger gas tank 1902. The top of the cart plate 5 is installed through the gas tank groove 14 There is a trigger gas tank 1902, which does not need to store too much gas, so the trigger gas tank 1902 uses a helium gas tank with a lower pressure. The gas outlet of the trigger gas tank 1902 is interference fit with the gas tank plug 1905, ensuring that the gas tank plug 1905 is tightly plugged in the tank mouth 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, ensuring 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 ventilation pipe 10 are fixedly connected to the top of the foam storage box 13 through the pipe fixing frame 17.

[0034] Example 3: Reference Figure 1 , 2, 6, 7 and Example 2, the foam storage box 13 is in a U shape, and the U shape can increase the volume of the foam storage box 13 without affecting the trigger mechanism 19. The inner cavity of the foam storage box 13 is installed with a partition 21. Two liquids are stored in the foam storage box 13, namely, aluminum sulfate solution and sodium bicarbonate solution. After the two liquids are mixed, aluminum sulfate and sodium bicarbonate undergo a double hydrolysis reaction, which will produce foam 7-10 times their own volume. Since the amount of substances required by the two liquids during the double hydrolysis reaction is 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 is used in combination with existing technologies such as sealing rubber to separate the two liquids. A connecting plate 30 is fixedly connected to one side of the partition 21, and a piston support 31 is fixedly connected to the end of the connecting plate 30 away from the partition 21, and a partition piston 32 is fixedly connected to one end of the piston support 31. The trigger pipe A delivery pipe 33 is connected to the bottom of 12, and the delivery pipe 33 is located at the untriggered position of the through-hole piston 23 in the trigger pipe 12, closer to the second four-way pipe 20, to ensure that the gas in the trigger pipe 12 will first push the through-hole piston 23 to the specified position and then be connected to the foam storage box 13 through the delivery pipe 33. The delivery pipe 33 passes through the foam storage box 13 at one end away from the trigger pipe 12, and the delivery pipe 33 is located on one side of the inner cavity of the foam storage box 13 and is provided with a piston groove 25, and the piston groove 25 of the delivery pipe 33 is clearance-fitted with the connecting plate 30, and the partition piston 32 and the delivery pipe 33 are transitionally fitted. The residual gas in the trigger gas tank 1902 will enter the foam storage box 13 through the delivery pipe 33, push the partition piston 32, and thus drive the partition 21 to move backward, mixing the two liquids in the foam storage box 13, and at the same time, the residual gas will also stir the liquid in the foam storage box 13 to accelerate the mixing of the two liquids and generate foam faster.

[0035] Example 4: Reference Figure 1 , 2, 4, 7 and 8, a jet box 4 is installed on the top of the fireproof board 3, and the jet box 4 penetrates the fireproof board 3. The bottom of the box body of the jet box 4 located on the outside of the fireproof board 3 is connected to a nozzle 29, and the nozzle 29 is arranged directly below, and can spray the remaining carbon dioxide onto the fireproof board 3, provide a cooling effect for the fireproof board 3, and isolate the oxygen on the surface of the fireproof board 3, so as to further enhance the flame retardant ability of the fireproof board 3. The jet box 4 is located on the top of the box body inside the fireproof board 3 and is fixedly connected with a valve bracket 26. The jet box 4 is provided with a T-shaped hole 18 at the valve bracket 26, and a valve plate 28 is arranged 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 arrangement 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 pulling force provided by the first tension spring 27, the valve plate 28 will be opened, and the gas enters the jet box 4 and is finally ejected. When the gas in the gas tank 15 is exhausted and the tension provided by the first tension spring 27 is greater than the pressure inside the airbag 1, the valve plate 28 will close, ensuring that the airbag 1 will be in an expanded state when there is no gas in the gas tank 15, thereby ensuring the effect of isolating smoke.

[0036] Example 5: Reference Figure 1-4 Several protective shells 9 are installed on the top of the cart plate 5. The protective shells 9 can reduce damage and bumps to the device during storage. One of the several protective shells 9 is rotatably connected to an adjacent protective shell 9 through a pin shaft, and another adjacent protective shell 9 is snap-connected through a buckle 8. The buckle 8 can facilitate maintenance personnel to open the protective shell 9 for inspection and maintenance. Universal wheels 6 are installed at the four corners of the bottom of the cart plate 5. The universal wheels 6 are convenient for users to quickly push the device to the fire source. A cart handle 7 is fixedly connected to the top of the cart plate 5 near the edge of the gas tank slot 14. A pressure gauge 22 is installed on the outer wall of the first four-way pipe 2. The pressure gauge 22 allows users and maintenance personnel to quickly understand the pressure in the gas storage tank 15.

[0037] In summary:

[0038] According to the needs of different places, different numbers of gas storage tanks 15 can be placed in the gas tank slot 14. When a fire occurs, the user quickly pushes the device to the fire source and the personnel evacuate immediately. When the melting temperature of the fusible alloy 1908 on the top of the fireproof plate 3 is between 60°C and 200°C, fusible alloys 1908 with different melting points can be selected according to the needs of different places. When the temperature at the fusible alloy 1908 reaches the melting point, the fusible alloy 1908 will melt quickly, and the counterweight block 1906 on the top of the fusible alloy 1908 will slide down along 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, so that the gas tank plug 1905 is pulled up, triggering the liquid carbon dioxide in the gas tank 1902 to melt under the pressure. When used, it will be quickly ejected, pushing the through-hole piston 23 backwards 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 ventilation pipe 10, and the liquid carbon dioxide in the gas storage tank 15 is also quickly ejected under the action of pressure, and is filled into the airbag 1 through the ventilation pipe 10 and the ventilation groove 24 inside the fireproof board 3. The airbag 1 is made of fire-resistant rubber. While being elastic, it can also be used for a long time at temperatures of 200°C to 300°C or even higher. Under some special formulations, the short-term tolerance temperature can exceed 500°C, and the airbag 1 expands rapidly. When the airbag 1 touches the surrounding walls, the airbag 1 stops expanding. At this time, the gas storage tank 15 is still spraying gas, so the pressure inside the airbag 1 will gradually increase. When the pressure inside the airbag 1 is greater than the tension of the first tension spring 27, the valve plate 28 will be opened by the gas, and the carbon dioxide will enter the jet box 4, and finally spray downward at the nozzle 29, providing a cooling effect for the front fireproof board 3. At the same time, the remaining gas in the trigger gas tank 1902 will flow downward at the through-hole piston 23, blow into the foam storage box 13 through the foam trigger tube 33, push the partition piston 32, and the partition piston 32 drives the partition 21 to move. At this time, the aluminum sulfate solution and the sodium bicarbonate solution in the foam storage box 13 contact each other and mix to produce foam. The remaining gas in the trigger gas tank 1902 will be continuously filled into the foam storage box 13, accelerating the mixing of the aluminum sulfate solution and the sodium bicarbonate solution. When the aluminum sulfate solution and the sodium bicarbonate solution are mixed, foam of 7 to 10 times their own volume will be generated. The foam will enter the foam injection box 16 through the foam delivery pipe 11 and finally be ejected forward at the nozzle 29 to extinguish the fire at the fire source.

[0039] The above shows and describes 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 above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A fire-proof foam fire extinguishing device, comprising a trolley plate (5), characterized in that: The top of the pushcart plate (5) is fixedly connected to a plurality of gas tank grooves (14), a gas storage tank (15) is installed inside the gas tank groove (14), the gas outlet of the gas storage 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 ventilation pipe (10), and the top of the pushcart plate (5) away from the edge of the gas tank groove (14) is fixedly connected to a fireproof board (3 ), the outer edge of the fireproof plate (3) is fixedly connected with an airbag (1), the airbag (1) is made of fire-resistant rubber material, a ventilation groove (24) is provided inside the fireproof plate (3), the vertical section of the ventilation groove (24) is inverted T-shaped, the air inlet end of the ventilation groove (24) is connected to the ventilation pipe (10), the three air outlet ends of the ventilation groove (24) pass through the fireproof plate (3) and are connected to the inner cavity of the airbag (1), and one end of the second four-way pipe (20) in the horizontal direction is connected to the ventilation pipe (10). A trigger pipe (12) is connected, and one end of the trigger pipe (12) away from the second four-way pipe (20) is connected to a trigger mechanism (19), and the trigger mechanism (19) is installed on the top of the cart plate (5). The top of the cart plate (5) is fixedly connected to a foam storage box (13), and the top of the foam storage box (13) is connected to a foam delivery pipe (11). The end of the foam delivery pipe (11) away from the foam storage box (13) passes through the fireproof board (3) and is connected to a foam spray box (16). One side of the foam spray box (16) is connected to a nozzle (29), and 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), and 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 in the untriggered state, the unopened part of the through-hole piston (23) is located at the top of the first four-way pipe (2).

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

3. A fire-proof 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 ventilation pipe (10) are fixedly connected to the top of the foam storage box (13) via a pipe fixing frame (17).

4. A fire-proof foam fire extinguishing device according to claim 1, characterized in that: The foam storage box (13) is in a U shape, and a partition (21) is installed in the inner cavity of the foam storage box (13). A connecting plate (30) is fixedly connected to one side of the partition (21), and an end of the connecting plate (30) away from the partition (21) is fixedly connected to a piston support (31), and one end of the piston support (31) is fixedly connected to a partition piston (32).

5. A fire-proof foam fire extinguishing device according to claim 4, characterized in that: The bottom of the trigger pipe (12) is connected to a delivery pipe (33), one 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 provided on one side of the delivery pipe (33) located in the inner cavity of the foam storage box (13), and the piston groove (25) provided on the delivery pipe (33) and the connecting plate (30) are clearance-fitted, and the partition piston (32) and the delivery pipe (33) are transitionally fitted.

6. A fire-proof 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), and the jet box (4) penetrates the fireproof board (3). The bottom of the box body of the jet box (4) located on the outside of the fireproof board (3) is connected to a nozzle (29). The top of the box body of the jet box (4) located on the inside of the fireproof board (3) is fixedly connected to a valve bracket (26). The jet box (4) is provided with a T-shaped hole (18) at the valve bracket (26), and a valve plate (28) is arranged at the T-shaped hole (18). The valve plate (28) is elastically connected to the valve bracket (26) through a first tension spring (27).

7. A fire-proof foam fire extinguishing device according to claim 1, characterized in that: A plurality of protective shells (9) are installed on the top of the cart plate (5), one of the plurality of protective shells (9) is rotatably connected to an adjacent protective shell (9) via a pin, and another adjacent protective shell (9) is connected to the adjacent protective shell via a buckle (8) card box.

8. A fire-proof foam fire extinguishing device according to claim 1, characterized in that: Universal wheels (6) are installed at the four corners of the bottom of the cart plate (5), a cart handle (7) is fixedly connected to the top of the cart plate (5) near the edge of the gas tank tank (14), and a pressure gauge (22) is installed on the outer wall of the first four-way pipe (2).

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