Smoke exhaust gun for fire fighting

Abstract

The utility model relates to the technical field of fire safety, in particular to a smoke exhaust gun for fire extinguishing, which comprises a fire-fighting spray gun, the left end of the fire-fighting spray gun is communicated with a high-pressure spray head, the left side of the surface of the high-pressure spray head is sleeved with a centralizing pipe, and the right side of the inner cavity of the centralizing pipe is fixedly connected with a rubber sealing gasket. And a buckling and fixing mechanism is installed between the concentration pipe and the high-pressure spray head, and mixed liquid conveying mechanisms are installed at the top and the bottom of an inner cavity of the concentration pipe correspondingly. By arranging the buckling and fixing mechanism, the mixed liquid conveying mechanism, the stacking spray head and the concentration pipe, the chemical smoke suppression device has the advantages of flexible disassembly and assembly and chemical smoke suppression, the stacking spray head and the concentration pipe can be buckled and installed on the high-pressure spray head, and a chemical smoke suppression agent can be introduced into the concentration pipe in cooperation with the mixed liquid conveying mechanism; the whole smoke suppression effect is better, the stacked nozzles and the centralized pipe are flexible and detachable, and follow-up maintenance is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fire safety, in particular to a smoke exhaust gun for fire extinguishing. Background Art

[0002] In the fire safety process, firefighting equipment is one of the indispensable components, which refers to the equipment and facilities used for fire extinguishing, fire prevention and fire accidents. Among them, the fire gun is a commonly used device, which is used to connect with the fire hose for firefighters to hold and extinguish the fire source.

[0003] After searching, the patent number is CN208809362U, and the name is a utility model of a smoke exhaust gun for fire extinguishing, including a water pipe. Through research and analysis, it is found that although the water source sprayed from the nozzle can also form water mist, thereby dispersing the thick smoke generated by the fire, there are still the following disadvantages to a certain extent.

[0004] For example, the device adopts a side-connected water sprinkler pipe and a short opening to perform smoke exhaust operations when smoke exhaust is needed. However, this design is in a fixed integrated state, which is not convenient for centralized transportation or carrying of the equipment, and will also increase the difficulty of subsequent maintenance. It cannot perform auxiliary chemical smoke suppression treatment, and only uses water mist dust reduction. It cannot effectively deal with the acid-containing smoke generated by fires, and there are certain limitations. In order to solve the above technical problems, we have designed a smoke exhaust gun for fire extinguishing. Utility Model Content

[0005] The purpose of the utility model is to provide a smoke exhaust gun for fire extinguishing, which has the advantages of flexible disassembly and assembly and chemical smoke suppression, and solves the problem that the device is in a fixed integrated state, is not convenient for centralized transportation or carrying of the equipment, and also increases the difficulty of subsequent maintenance, and cannot perform auxiliary chemical smoke suppression treatment. It only uses water mist dust reduction and cannot effectively deal with the problem of acid smoke generated by fire.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a smoke exhaust gun for fire fighting, including a fire spray gun, the left end of the fire spray gun is connected to a high-pressure nozzle, a concentrating pipe is installed on the left side of the surface of the high-pressure nozzle, a rubber sealing gasket is fixedly connected to the right side of the inner cavity of the concentrating pipe, a buckling and fixing mechanism is installed between the concentrating pipe and the high-pressure nozzle, a mixed liquid transmission mechanism is installed on the top and bottom of the inner cavity of the concentrating pipe, a stacked nozzle is fixedly installed on the left end of the concentrating pipe, a collecting groove is opened inside the stacked nozzle, and an atomizing nozzle is fixedly embedded in the outer ring on the left side of the collecting groove.

[0007] Preferably, the number of the buckling and fixing mechanisms is three and they are evenly distributed on the centralizing pipe and the high-pressure nozzle, and the buckling and fixing mechanisms include a fixing frame and a positioning seat.

[0008] Preferably, the surface of the fixing frame is fixedly connected to the outer ring of the high-pressure nozzle, and the surface of the positioning seat is fixedly connected to the outer ring of the concentrating pipe.

[0009] Preferably, a movable frame is movably sleeved on the surface of the fixed frame, a buckling rod is fixedly connected to the left side of the surface of the movable frame, an arc groove is opened on the left side of the surface of the positioning seat, and a clamping groove is opened on the right side of the inner cavity of the arc groove.

[0010] Preferably, the mixed liquid transmission mechanism comprises a connector, which is fixedly mounted on the central pipe and communicated with the inner cavity of the central pipe.

[0011] Preferably, a side of the connector away from the central pipe is connected to a transmission pipe, and a one-way valve and a flow rate sensor are respectively mounted on the surface of the transmission pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model has the advantages of flexible disassembly and assembly and chemical smoke suppression by arranging a buckling fixing mechanism, a mixed liquid transmission mechanism, a stacked nozzle and a concentrated pipe. The stacked nozzle and the concentrated pipe can be buckled and installed on the high-pressure nozzle in conjunction with the buckling rod and the clamping groove, and the chemical smoke suppressant can be introduced into the concentrated pipe in conjunction with the mixed liquid transmission mechanism, and then atomized and sprayed out through the atomizing nozzle, so that the overall smoke suppression effect is better, and the stacked nozzle and the concentrated pipe are flexibly disassembled, which is convenient for subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a sectional stereoscopic diagram of the structure of the utility model;

[0016] Figure 3 It is a three-dimensional schematic diagram of the utility model when the structure is separated;

[0017] Figure 4 It is a sectional stereoscopic diagram of the stacked nozzle, the concentrated pipe and the high-pressure nozzle of the utility model;

[0018] Figure 5 For this utility model Figure 4 A is an enlarged schematic diagram.

[0019] In the figure: 1. fire spray gun; 2. buckling and fixing mechanism; 201. arc groove; 202. fixing frame; 203. movable frame; 204. buckling rod; 205. positioning seat; 206. clamping groove; 3. mixed liquid transmission mechanism; 301. one-way valve; 302. flow rate sensor; 303. connector; 304. transmission pipe; 4. stacking nozzle; 5. concentrating pipe; 6. high-pressure nozzle; 7. collecting tank; 8. atomizing nozzle; 9. rubber sealing pad. DETAILED DESCRIPTION

[0020] See also Figure 1-Figure 5 A smoke exhaust gun for fire fighting and extinguishing includes a fire spray gun 1. The left end of the fire spray gun 1 is connected to a high-pressure nozzle 6. A centralizing pipe 5 is installed on the left side of the surface of the high-pressure nozzle 6. By setting the centralizing pipe 5, a mixing space can be provided for water and chemical smoke suppressants. A rubber sealing pad 9 is fixedly connected to the right side of the inner cavity of the centralizing pipe 5. By setting the rubber sealing pad 9, the sealing performance of the connection between the centralizing pipe 5 and the high-pressure nozzle 6 can be ensured in the installed state. Since the rubber sealing pad 9 is made of rubber, in the installed state, the rubber sealing pad 9 provides a rightward supporting elastic force for the high-pressure nozzle 6, thereby increasing the buckle The friction between the pressure rod 204 and the card slot 206 prevents the pressure rod 204 from rotating arbitrarily and disengaging from the card slot 206. A pressure fixing mechanism 2 is installed between the central tube 5 and the high-pressure nozzle 6. The top and bottom of the inner cavity of the central tube 5 are both installed with a mixed liquid transmission mechanism 3. The left end of the central tube 5 is fixedly installed with a stacking nozzle 4. A collecting groove 7 is opened inside the stacking nozzle 4. The outer ring of the left side of the collecting groove 7 is fixedly inlaid with an atomizing nozzle 8. By setting the collecting groove 7 and the atomizing nozzle 8, the mixed liquid can be concentrated and drained to be atomized and sprayed through the atomizing nozzle 8, so as to achieve a good smoke suppression and exhaust effect.

[0021] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 The number of the buckling and fixing mechanisms 2 is three and they are evenly distributed on the centralizing pipe 5 and the high-pressure nozzle 6. The buckling and fixing mechanisms 2 include a fixing frame 202 and a positioning seat 205;

[0022] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 The surface of the fixed frame 202 is fixedly connected to the outer ring of the high-pressure nozzle 6. By setting the fixed frame 202, the movable frame 203 can be installed and the rotation requirement of the movable frame 203 can be met. The surface of the positioning seat 205 is fixedly connected to the outer ring of the concentrated pipe 5. By setting the positioning seat 205, the space requirement for the arc groove 201 and the clamping groove 206 can be met.

[0023] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 The surface of the fixed frame 202 is movably sleeved with a movable frame 203, and the left side of the surface of the movable frame 203 is fixedly connected with a buckling rod 204. The left side of the surface of the positioning seat 205 is provided with an arc groove 201. By providing the arc groove 201, the rotation space requirement of the buckling rod 204 can be met. A clamping groove 206 is provided on the right side of the inner cavity of the arc groove 201. By providing the buckling rod 204 and the clamping groove 206, buckling can be achieved in the installed state to prevent the concentrated pipe 5 and the high-pressure nozzle 6 from being displaced and separated at will;

[0024] See also Figure 1 , Figure 3 and Figure 4 The mixed liquid transmission mechanism 3 includes a connector 303, which is fixedly mounted on the central tube 5 and communicated with the inner cavity of the central tube 5. By setting the connector 303, the transmission tube 304 can be connected with the central tube 5, thereby meeting the demand for transmitting the chemical smoke suppressant into the central tube 5;

[0025] See also Figure 1 , Figure 3 and Figure 4 The side of the connector 303 away from the central pipe 5 is connected to a transmission pipe 304, and a one-way valve 301 and a flow rate sensor 302 are respectively installed on the surface of the transmission pipe 304. By setting the one-way valve 301, the one-way transmission requirement of the chemical smoke suppressant can be met, and the water in the central pipe 5 can be prevented from flowing back into the transmission pipe 304. By setting the flow rate sensor 302, the transmission speed of the chemical smoke suppressant can be flexibly monitored;

[0026] There are several atomizing nozzles 8, which are evenly distributed on the left side of the stacked nozzles 4 and communicate with the inner cavity of the manifold 7;

[0027] The arc groove 201 and the movable frame 203 have central angles at the same position, and the clamping groove 206 is matched with the buckling rod 204;

[0028] One end of the two transmission tubes 304 away from the connector 303 is connected to an external sodium bicarbonate solution source, and in actual application, the sodium bicarbonate solution is introduced into the transmission tube 304 through an external infusion pump, wherein the acidic substances in the fire smoke mainly come from the chemical reaction during the combustion process, including sulfur dioxide, nitrogen oxides, sulfur trioxide, hydrogen chloride or hydrogen fluoride;

[0029] Sodium bicarbonate solution has a chemical inhibition effect and can decompose into sodium carbonate, water and carbon dioxide at high temperature. The newly generated sodium carbonate is highly reactive at the moment of generation and can undergo chemical adsorption reaction with acidic pollutants in the flue gas, thereby removing these pollutants.

[0030] In actual application, in order to improve the mixing effect of the smoke suppression solution and water, a spiral groove may be opened inside the concentrating pipe 5 so that there is a rotational force when the water flows to the left.

[0031] When in use, all components are in the initial installation state. In the normal fire fighting process, the firefighters can install and connect the right end of the fire spray gun 1 with the fire hose, and the handheld fire spray gun 1 sprays water from the high-pressure nozzle 6 to extinguish the fire source, while the auxiliary firefighters pre-connect the transmission pipe 304 with the external infusion pump. When smoke suppression is required, the centralizing pipe 5 is first moved to the right and sleeved on the high-pressure nozzle 6, and the rubber sealing pad 9 is compressed. The firefighters push the centralizing pipe 5 to the right again, and the rubber sealing pad 9 is further compressed, and the movable frame 203 is rotated synchronously, so that the buckling rod 204 enters the arc groove 2 01, and continue to rotate the movable frame 203 to place it in the card slot 206. At this time, no thrust is applied to the central tube 5. Under the elastic support of the rubber sealing pad 9, the pressing rod 204 is stably pressed in the card slot 206 to achieve quick installation. Then, the sodium bicarbonate solution is introduced into the transmission pipe 304 through the external infusion pump, and transmitted to the central tube 5 through the one-way valve 301. At the same time, the water sprayed by the high-pressure nozzle 6 will also enter the central tube 5, and the smoke suppressant is mixed with the water. Under the drainage action of the collecting trough 7, the mixed liquid is evenly atomized and sprayed by the atomizing nozzle 8, so as to achieve better smoke suppression and exhaust effects.

[0032] To sum up: the smoke exhaust gun for fire fighting solves the problem that the device is in a fixed integrated state, which is inconvenient for centralized transportation or carrying of the equipment, and will also increase the difficulty of subsequent maintenance, and cannot perform auxiliary chemical smoke suppression treatment. It only uses water mist dust reduction method, which cannot effectively deal with the problem of acid smoke generated by fire fighting.

Claims

1. A smoke exhaust gun for fire extinguishing, comprising a fire spray gun (1), characterized in that: The left end of the fire-fighting spray gun (1) is connected to a high-pressure nozzle (6), a centralizing tube (5) is sleeved and installed on the left side of the surface of the high-pressure nozzle (6), a rubber sealing pad (9) is fixedly connected to the right side of the inner cavity of the centralizing tube (5), a buckling fixing mechanism (2) is installed between the centralizing tube (5) and the high-pressure nozzle (6), a mixed liquid transmission mechanism (3) is installed at the top and bottom of the inner cavity of the centralizing tube (5), a stacking nozzle (4) is fixedly installed on the left end of the centralizing tube (5), a collecting groove (7) is opened inside the stacking nozzle (4), and an atomizing nozzle (8) is fixedly embedded in the outer ring of the left side of the collecting groove (7).

2. A smoke exhaust gun for fire extinguishing according to claim 1, characterized in that: The number of the buckling and fixing mechanisms (2) is three and they are evenly distributed on the centralizing pipe (5) and the high-pressure nozzle (6). The buckling and fixing mechanisms (2) include a fixing frame (202) and a positioning seat (205).

3. A smoke exhaust gun for fire extinguishing according to claim 2, characterized in that: The surface of the fixing frame (202) is fixedly connected to the outer ring of the high-pressure nozzle (6), and the surface of the positioning seat (205) is fixedly connected to the outer ring of the centralizing pipe (5).

4. The smoke exhaust gun for fire extinguishing according to claim 3, characterized in that: A movable frame (203) is movably sleeved on the surface of the fixed frame (202), a buckling rod (204) is fixedly connected to the left side of the surface of the movable frame (203), an arc-shaped groove (201) is opened on the left side of the surface of the positioning seat (205), and a clamping groove (206) is opened on the right side of the inner cavity of the arc-shaped groove (201).

5. The smoke exhaust gun for fire extinguishing according to claim 1, characterized in that: The mixed liquid transmission mechanism (3) comprises a connector (303), wherein the connector (303) is fixedly mounted on the central tube (5) and is in communication with the inner cavity of the central tube (5).

6. A smoke exhaust gun for fire extinguishing according to claim 5, characterized in that: The side of the connector (303) away from the central pipe (5) is connected to a transmission pipe (304), and a one-way valve (301) and a flow rate sensor (302) are respectively sleeved and installed on the surface of the transmission pipe (304).

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