Compressed air foam fire extinguishing device

Abstract

The utility model discloses a compressed air foam fire extinguishing device which comprises a backpack water tank, a steel cylinder is detachably connected to the outer wall of the water tank, foam liquid and compressed gas are stored in the steel cylinder, a valve is installed at an opening in the top end of the steel cylinder, a liquid pumping pipe is installed at a liquid inlet of the valve, and the bottom end of the liquid pumping pipe is located at the inner bottom of the steel cylinder. A support is fixedly connected to the bottom of the water tank and internally provided with a storage battery and a water pump. When the device is used, after the water tank is carried on the back, the water pump is started to pump water in the water tank into the spray gun through the first hose, then the valve is adjusted to a proper opening degree, so that compressed gas in the steel cylinder pumps out foam liquid, the foam liquid enters the mixer through the liquid pumping pipe and the second hose, and then the spray gun is operated to spray the foam liquid. The fire extinguishing device is easy and convenient to operate, small in size, capable of being carried on the back, capable of easily entering a narrow area to conduct fire extinguishing work and good in using effect, and the device is small in size and capable of being carried on the back.

Description

Technical Field

[0001] The utility model relates to a fire extinguishing device, in particular to a compressed air foam fire extinguishing device. Background Art

[0002] UHV converter station refers to a station built in a high-voltage direct current transmission system to complete the conversion of alternating current into direct current or vice versa, and to meet the requirements of the power system for safety, stability and power quality. The existing UHV converter station fire extinguishing operation mainly adopts a water spray fire extinguishing system, which has poor fire extinguishing performance, large water consumption, and untimely response, and cannot achieve rapid and fixed-point fire extinguishing, which is easy to delay the fire extinguishing operation. In response to such problems, the patent with announcement number CN211798403U discloses a compressed air foam fire extinguishing device for a converter station, which uses a first pressure The compressed air foam generating device and the second compressed air foam generating device are used to generate fire extinguishing agent. The fire water pump pumps the water in the regulating water tank into the foam proportioning mixer. The foam pump pumps the foam in the foam storage tank into the foam proportioning mixer to mix it with water and transport it to the air mixer. The air compressor generates high-pressure air and enters the air mixer to mix it with foam and water and emits the mixed fire extinguishing agent. At the same time, two groups of fire water pumps, foam pumps and the third shut-off valve are provided, so as to realize one backup and one use, ensuring that the core components can be quickly switched when a failure occurs during operation, thereby ensuring normal operation.

[0003] Although the above scheme can achieve rapid and targeted fire extinguishing, it has great limitations in use because its pipelines and equipment are fixed and cannot deal with fires outside the coverage area.

[0004] After searching, the patent with announcement number CN220572583U discloses a mobile compressed air foam fire extinguishing device, which can effectively adjust the height of the foam fire extinguishing tank according to actual conditions through the cooperation of the threaded block, slider, movable rod, support block, bearing plate, cylinder and holder, making it convenient for users of different heights to use the device, avoiding safety hazards during fire extinguishing, and improving the use effect of the mobile compressed air foam fire extinguishing device.

[0005] Although the above device is easy to move, the foam fire extinguishing tank used is still large in size and needs to be moved with a cart. It also needs to be connected to a fire hydrant when in use, which makes it inconvenient to quickly deploy and enter narrow areas for firefighting work, and needs to be improved. Summary of the invention

[0006] The purpose of the utility model is to provide a compressed air foam fire extinguishing device to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A compressed air foam fire extinguishing device comprises a back-carrying water tank, the outer wall of the water tank is detachably connected to a steel cylinder, the steel cylinder stores foam liquid and compressed gas, the top opening of the steel cylinder is installed with a valve, the valve liquid inlet is installed with a liquid extraction pipe, and the bottom end of the liquid extraction pipe is located at the inner bottom of the steel cylinder, the bottom of the water tank is fixedly connected with a bracket, a battery and a water pump are installed in the bracket, the liquid inlet of the water pump is connected to the bottom of the water tank, the liquid outlet of the water pump is connected to a spray gun through a first hose, the liquid outlet of the spray gun is connected to a mixer, and the liquid outlet of the valve is connected to the mixer through a second hose.

[0009] As a further solution of the utility model: the outer wall of the water tank is provided with a mounting groove adapted to the steel cylinder, and a plurality of binding mechanisms for fastening the steel cylinder are installed at the corresponding positions of the outer wall of the water tank and the mounting groove.

[0010] As a further solution of the utility model: the binding mechanism includes a first binding strap and a second binding strap fixed on the outer wall of the water tank, the first binding strap and the second binding strap are respectively located on both sides of the installation groove, and the first binding strap and the second binding strap are connected to each other through a buckle.

[0011] As a further solution of the utility model: the mixer includes a cylinder with an opening at one end, a second liquid inlet pipe is fixedly penetrated through the blocked end of the cylinder, the end of the second liquid inlet pipe located outside the cylinder is connected to the liquid outlet of the spray gun, the outer peripheral wall of the cylinder is fixedly connected to the first liquid inlet pipe, the liquid inlet of the first liquid inlet pipe is connected to the liquid outlet end of the second hose, the inner wall of the cylinder is fixedly connected to a baffle, the outer wall of the baffle facing the second liquid inlet pipe is fixedly connected to a pointed cone, and the outer wall of the baffle is penetrated by a plurality of through holes.

[0012] As a further solution of the utility model: the outer wall of the water tank is fixedly connected to a back plate, two shoulder straps are symmetrically installed on the back plate, and a waist belt is installed on the outer wall of the back plate below the shoulder straps.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] When the utility model is in use, after the water tank is carried on the back, the water pump is started to pump the water in the water tank into the spray gun through the first hose, and then the valve is adjusted to an appropriate opening so that the compressed gas in the cylinder pumps out the foam liquid, and the foam liquid enters the mixer through the liquid extraction pipe and the second hose, and then the spray gun is operated to make water enter the mixer and mix with the foam liquid and then spray out, so that the fire extinguishing operation can be carried out. The operation is simple and convenient, and the device is small in size and can be carried on the back, so it is easy to enter a narrow area for fire extinguishing work, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the structure of a compressed air foam fire extinguishing device.

[0016] Figure 2 The present invention is a structural schematic diagram of a binding mechanism in a compressed air foam fire extinguishing device.

[0017] Figure 3 This is a schematic diagram of the internal structure of a mixer in a compressed air foam fire extinguishing device.

[0018] Among them, there are water tank 1, air filter element 2, bracket 3, battery 4, water pump 5, mounting groove 6, cylinder 7, valve 8, liquid extraction pipe 9, first strap 10, second strap 11, buckle 12, back plate 13, shoulder strap 14, waist belt 15, first hose 16, spray gun 17, cylinder 18, second hose 19, first liquid inlet pipe 20, second liquid inlet pipe 21, baffle 22, pointed cone 23, and through hole 24. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 3 In the embodiment of the utility model, a compressed air foam fire extinguishing device comprises a back-carrying water tank 1, an air filter element 2 is installed at the water injection port on the top of the water tank 1, a steel cylinder 7 is detachably connected to the outer wall of the water tank 1, foam liquid and compressed gas are stored in the steel cylinder 7, a valve 8 is installed at the top opening of the steel cylinder 7, a liquid inlet of the valve 8 is installed with a liquid extraction pipe 9, and the bottom end of the liquid extraction pipe 9 is located at the inner bottom of the steel cylinder 7, a bracket 3 is fixedly connected to the bottom of the water tank 1, a battery 4 and a water pump 5 are installed in the bracket 3, a switch for controlling the water pump 5 is installed on the side wall of the bracket 3, the liquid inlet of the water pump 5 is connected to the bottom of the water tank 1, the liquid outlet of the water pump 5 is connected to a spray gun 17 through a first hose 16, the liquid outlet of the spray gun 17 is connected to a mixer, and the liquid outlet of the valve 8 is connected to the mixer through a second hose 19.

[0021] By adopting the above scheme, when the utility model is in use, after the water tank 1 is carried on the back, the water pump 5 is started to pump the water in the water tank 1 into the spray gun 17 through the first hose 16, and then the valve 8 is adjusted to an appropriate opening so that the compressed gas in the cylinder 7 pumps out the foam liquid, and the foam liquid enters the mixer through the liquid extraction pipe 9 and the second hose 19, and then the spray gun 17 is operated to make the water enter the mixer and mix with the foam liquid and then spray it out, so that the fire extinguishing operation can be carried out. The operation is simple and convenient, and the device is small in size and can be carried on the back, so it is easy to enter a narrow area for fire extinguishing work, and the use effect is good.

[0022] Specific combination Figure 2 In one embodiment of the utility model, the outer wall of the water tank 1 is provided with a mounting groove 6 adapted to the steel cylinder 7, and a plurality of binding mechanisms for fastening the steel cylinder 7 are installed at the corresponding positions of the outer wall of the water tank 1 and the mounting groove 6.

[0023] Furthermore, the binding mechanism includes a first binding strap 10 and a second binding strap 11 fixed on the outer wall of the water tank 1, the first binding strap 10 and the second binding strap 11 are respectively located on both sides of the mounting groove 6, and the first binding strap 10 and the second binding strap 11 are connected to each other through a buckle.

[0024] The installation groove 6 facilitates the positioning and installation of the steel cylinder 7 on the water tank 1 , and the first strap 10 , the second strap 11 and the buckle facilitate the fixing of the steel cylinder 7 on the water tank 1 .

[0025] Specific combination Figure 3 In one embodiment of the utility model, the mixer includes a barrel 18 with an opening at one end, a second liquid inlet pipe 21 is fixedly penetrated through the blocked end of the barrel 18, an end of the second liquid inlet pipe 21 located outside the barrel 18 is connected to the liquid outlet of the spray gun 17, a first liquid inlet pipe 20 is fixedly connected to the outer peripheral wall of the barrel 18, the liquid inlet of the first liquid inlet pipe 20 is connected to the liquid outlet end of the second hose 19, a baffle 22 is fixedly connected to the inner wall of the barrel 18, a pointed cone 23 is fixedly connected to the outer wall of the baffle 22 facing the second liquid inlet pipe 21, a plurality of through holes 24 are penetrated through the outer wall of the baffle 22, and in order to facilitate the control of the amount of foam liquid entering the barrel 18 from the second liquid inlet pipe 21, a micro pressure reducing valve can also be installed at the liquid inlet end of the second liquid inlet pipe 21.

[0026] The water entering the cylinder 18 through the first liquid inlet pipe 20 and the foam liquid entering the cylinder 18 through the second liquid inlet pipe 21 will mix at the water outlet of the first liquid inlet pipe 20, collide on the pointed cone 23, and then pass through the through hole 24, thereby ensuring the mixing effect of water and foam liquid.

[0027] Specific combination Figure 1In one embodiment of the utility model, the outer wall of the water tank 1 is fixedly connected to a back plate 13, two shoulder straps 14 are symmetrically mounted on the back plate 13, and a waist belt 15 is mounted on the outer wall of the back plate 13 below the shoulder straps 14.

[0028] By using the back plate 13, the shoulder strap 14 and the waist belt 15, the water tank can be carried on the back, so that the device can be conveniently carried and moved.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compressed air foam fire extinguishing device, characterized in that: The invention comprises a water tank (1) which can be carried on the back. The outer wall of the water tank (1) is detachably connected to a steel cylinder (7). The steel cylinder (7) stores foam liquid and compressed gas. The top opening of the steel cylinder (7) is provided with a valve (8). The liquid inlet of the valve (8) is provided with a liquid extraction pipe (9), and the bottom end of the liquid extraction pipe (9) is located at the inner bottom of the steel cylinder (7). The bottom of the water tank (1) is fixedly connected to a bracket (3). A battery (4) and a water pump (5) are installed in the bracket (3). The liquid inlet of the water pump (5) is connected to the bottom of the water tank (1). The liquid outlet of the water pump (5) is connected to a spray gun (17) via a first hose (16). The liquid outlet of the spray gun (17) is connected to a mixer. The liquid outlet of the valve (8) is connected to the mixer via a second hose (19).

2. A compressed air foam fire extinguishing device according to claim 1, characterized in that: The outer wall of the water tank (1) is provided with a mounting groove (6) adapted to the steel cylinder (7), and a plurality of binding mechanisms for fastening the steel cylinder (7) are installed at positions corresponding to the outer wall of the water tank (1) and the mounting groove (6).

3. A compressed air foam fire extinguishing device according to claim 2, characterized in that: The binding mechanism comprises a first binding strap (10) and a second binding strap (11) fixed on the outer wall of the water tank (1); the first binding strap (10) and the second binding strap (11) are respectively located on two sides of the mounting groove (6); and the first binding strap (10) and the second binding strap (11) are connected to each other via a buckle.

4. A compressed air foam fire extinguishing device according to claim 1, characterized in that: The mixer comprises a cylinder (18) with an opening at one end, a second liquid inlet pipe (21) is fixedly penetrated through the blocked end of the cylinder (18), one end of the second liquid inlet pipe (21) located outside the cylinder (18) is connected to the liquid outlet of the spray gun (17), the outer peripheral wall of the cylinder (18) is fixedly connected to the first liquid inlet pipe (20), the liquid inlet of the first liquid inlet pipe (20) is connected to the liquid outlet end of the second hose (19), a baffle (22) is fixedly connected to the inner wall of the cylinder (18), a pointed cone (23) is fixedly connected to the outer wall of the baffle (22) facing the second liquid inlet pipe (21), and a plurality of through holes (24) are penetrated through the outer wall of the baffle (22).

5. A compressed air foam fire extinguishing device according to claim 1, characterized in that: The outer wall of the water tank (1) is fixedly connected to a back plate (13), two shoulder straps (14) are symmetrically mounted on the back plate (13), and a waist belt (15) is mounted on the outer wall of the back plate (13) below the shoulder straps (14).

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