Fire foam truck and fire extinguishing agent conveying device

Abstract

The utility model discloses a foam fire fighting truck and fire extinguishing agent conveying device, which comprises a foam pump, the input end of the foam pump is communicated and provided with an input pipe, the output end of the foam pump is communicated and provided with an output pipe, the side walls of the two sides of the output pipe are communicated and provided with liquid outlet pipes, one end of each liquid outlet pipe is provided with a second connector, and the other end of each liquid outlet pipe is provided with a second connector. One end of the input pipe is provided with a main liquid pumping pipe in a communicating mode, and a manual valve is arranged between the main liquid pumping pipe and the input pipe. According to the outfield fire fighting truck, the connecting pipe does not need to be connected to the interior of the foam liquid tank and is directly connected to the interior of the standby liquid pumping pipe, then the manual valve is manually closed, and a passage between the main liquid pumping pipe and the foam liquid tank is cut off, so that a supplemented foam liquid fire extinguishing agent is directly pumped by the foam pump and then sprayed out from the liquid outlet pipe, and the fire extinguishing operation is realized; and the supplemented foam extinguishing agent can be used for directly extinguishing fire, so that the fire extinguishing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire trucks, in particular to a foam fire truck and a fire extinguishing agent conveying device. Background Art

[0002] The foam tank fire truck is a highly specialized firefighting equipment, and its technical background is deeply rooted in the development of modern firefighting technology. The core of the vehicle lies in its large foam liquid tank, which is the key to achieving efficient firefighting. The foam tank is usually loaded with a special foam fire extinguishing agent, which is generated by chemical reaction and has the characteristics of low density, good fluidity, low thermal conductivity, and high adhesion. It can quickly cover the surface of the burning object to form an isolation layer, effectively isolate the air, inhibit the combustion reaction, and reduce the temperature of the fire scene by absorbing heat, thereby achieving the purpose of fire extinguishing.

[0003] Since the fire scene requires the participation of a large number of foam fire trucks, however, due to limited space, only a very small number of foam fire trucks can actually approach the fire scene for direct firefighting. Most foam fire trucks can only stay on the periphery for reinforcement. Due to the distance limitation, the foam spraying force of these fire trucks on the periphery is far less than that of the fire trucks close to the fire site. Therefore, the fire extinguishing effect is relatively poor. When the foam liquid tank inside the fire truck close to the fire site is used up, it is urgently needed to replenish the foam liquid to continue the firefighting work. At this time, it is necessary to extract foam liquid from the outside spare fire truck to ensure the continuous progress of the firefighting work.

[0004] Patent document CN206867544U discloses a novel foam fire truck and foam supply and delivery device, which includes a foam pump, a foam inlet pipeline and a foam outlet pipeline, wherein the foam inlet pipeline is connected to the suction port of the foam pump, the foam outlet pipeline is connected to the outlet of the foam pump, the foam inlet pipeline includes a first foam tank connection port and multiple foam inlet interfaces, the foam outlet pipeline includes a second foam tank connection port and multiple foam outlet interfaces, wherein the multiple foam inlet interfaces, multiple foam outlet interfaces, the first foam tank connection port, and the second foam tank connection port are respectively provided with valves. The utility model not only effectively improves the fire extinguishing performance of the foam fire truck itself, but also greatly improves the joint combat capability with the main battle fire truck, and greatly improves the utilization rate and fire extinguishing efficiency of the stock foam liquid at the accident site.

[0005] As in the prior art of the above-mentioned patent, the above-mentioned device innovatively realizes the efficient transportation of fire-extinguishing foam from the outdoor fire foam tank truck to the interior of the main fire-fighting fire truck. Usually, fire trucks rely on foam pumps to extract the fire extinguishing agent from the foam tank inside the vehicle body to extinguish the fire. This device directly injects the supplementary fire extinguishing agent into the foam tank of the main fire truck, and then the fire truck uses the foam pump to extract it for fire extinguishing. However, there are potential disadvantages: theoretically, the foam should be replenished before it is almost consumed, but the actual fire scene is complicated, and sometimes it will be replenished only after it is used up. Due to the large area of ​​the bottom end of the tank, when replenishing the foam fire extinguishing agent, it is necessary to wait for the foam liquid to soak through the pump input end before continuing to extinguish the fire. This will make it impossible to extinguish the fire in a short period of time, affecting the efficiency and effectiveness of fire extinguishing, causing fire delays, and affecting life and property installation. Utility Model Content

[0006] The utility model aims to provide a foam fire truck and a fire extinguishing agent delivery device to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fire extinguishing agent delivery device, including a foam pump, the input end of the foam pump is connected to an input pipe and installed, the output end of the foam pump is connected to an output pipe and installed, the side walls on both sides of the output pipe are connected to liquid outlet pipes, one end of the two liquid outlet pipes is provided with a second connector, one end of the input pipe is connected to a main liquid extraction pipe and installed, a manual valve is provided between the main liquid extraction pipe and the input pipe, the bottom end of the input pipe is connected to a spare liquid extraction pipe and installed, one end of the spare liquid extraction pipe is provided with a first connector, and a limiting component is provided on the first connector.

[0008] As a further description of the above technical solution: the limiting assembly includes a fixing ring, which is fixedly sleeved on the outside of the first connecting head, a bracket is fixedly installed on the side wall of the fixing ring, a fixing frame is fixedly installed on the top of the bracket, a pressure rod is slidably installed on the top of the fixing frame, and a spring is provided on the side wall of the pressure rod, one end of the spring is fixedly connected to the top of the fixing frame, and the other end of the spring is fixedly connected to the top of the pressure rod.

[0009] As a further description of the above technical solution: an unloading valve is arranged between the output end of the foam pump and the output pipe.

[0010] As a further description of the above technical solution: the bottom end of the pressure rod is rollingly connected with a ball.

[0011] A foam fire truck comprises a fire extinguishing agent delivery device and a foam liquid tank, wherein the foam liquid tank is communicated with a main liquid extraction pipe, the foam pump is fixedly installed on the top of the foam liquid tank, a fixing platform is fixedly installed on the top of the foam liquid tank, and the fixing platform is fixedly connected to an output pipe and two liquid outlet pipes.

[0012] As a further description of the above technical solution: a supplementary port is provided in communication with the side wall of the foam liquid tank, an inclined tube is connected between the supplementary port and the foam liquid tank, and a one-way valve is provided inside the inclined tube.

[0013] The utility model provides a fire extinguishing agent delivery device. It has the following beneficial effects: the field fire truck does not need to connect the connecting pipe to the inside of the foam liquid tank, but directly connects it to the inside of the spare liquid extraction pipe, and then manually closes the manual valve to cut off the passage between the main liquid extraction pipe and the foam liquid tank, so that the supplementary foam liquid fire extinguishing agent is directly extracted by the foam pump and then sprayed out from the liquid outlet pipe, realizing the fire extinguishing operation, so that there is no delay in supplementary fire extinguishing, and the supplementary foam fire extinguishing agent can be used to directly extinguish the fire, which increases the fire extinguishing efficiency. Since the spare liquid extraction pipe is not directly connected to the inside of the foam tank body for extraction, but is connected to the fire hose, the fire hose is prone to deviation and movement due to the internal water pressure when extinguishing the fire, and may seriously cause the interface to fall off. The setting of the limit component can increase the limit and fixation of the fire hose, avoiding the risk of falling off.

[0014] Since the fire extinguishing agent delivery device has the above-mentioned beneficial effects, a foam fire truck including the fire extinguishing agent delivery device also has the above-mentioned beneficial effects.

[0015] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0016] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a foam fire truck and a fire extinguishing agent delivery device proposed by the utility model;

[0018] Figure 2 A schematic diagram of a three-dimensional structure from another viewing angle of the present invention;

[0019] Figure 3 It is a schematic diagram of the main structure of the utility model and the cross-sectional structure inside the foam liquid tank;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting component of the utility model.

[0021] Legend:

[0022] 1. Foam liquid tank; 2. Refilling port; 3. Fixed platform; 4. Foam pump; 5. Input pipe; 6. Manual valve; 7. Main pumping pipe; 8. Spare pumping pipe; 9. First connector; 10. Outlet pipe; 11. Second connector; 12. Unloading valve; 13. Fixed ring; 14. Bracket; 15. Fixed frame; 16. Pressure rod; 17. Spring; 18. Ball; 19. Output pipe; 20. Inclined pipe; 21. One-way valve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-4 , a fire extinguishing agent delivery device comprises a foam pump 4, the input end of the foam pump 4 is connected and installed with an input pipe 5, the output end of the foam pump 4 is connected and installed with an output pipe 19, the side walls on both sides of the output pipe 19 are connected and installed with liquid outlet pipes 10, one end of the two liquid outlet pipes 10 is provided with a second connector 11, one end of the input pipe 5 is connected and installed with a main liquid extraction pipe 7, a manual valve 6 is provided between the main liquid extraction pipe 7 and the input pipe 5, the bottom end of the input pipe 5 is connected and installed with a spare liquid extraction pipe 8, one end of the spare liquid extraction pipe 8 is provided with a first connector 9, and a limiting position component is provided on the first connector 9; during normal fire extinguishing, the foam pump 4 extracts the fire extinguishing agent inside the foam liquid tank 1 through the main liquid extraction pipe 7 and the input pipe 5, and sprays it out from the liquid outlet pipe 10 to achieve fire extinguishing. When the foam in the foam liquid tank 1 inside the fire truck is used up, When the outside fire truck needs to replenish the foam fire extinguishing agent, the outside fire truck will directly connect the connecting pipe to the inside of the spare liquid extraction pipe 8 without connecting it to the inside of the foam liquid tank 1, and then manually close the manual valve 6 to cut off the passage between the main liquid extraction pipe 7 and the foam liquid tank 1, so that the replenished foam liquid fire extinguishing agent is directly extracted by the foam pump 4 and then sprayed out from the liquid outlet pipe 10, thereby realizing the fire extinguishing operation and making the replenishment of fire extinguishing without delay. The replenished foam fire extinguishing agent can be used to directly extinguish the fire, thereby increasing the fire extinguishing efficiency. Since the spare liquid extraction pipe 8 is not directly connected to the inside of the foam tank body for extraction, but is connected to the fire hose, the fire hose is prone to deviation and movement due to the internal water pressure when extinguishing the fire, and may seriously cause the interface to fall off. The setting of the limit assembly can increase the limit and fixation of the fire hose and avoid the risk of falling off.

[0025] As a preferred technical solution of this embodiment, the limiting assembly includes a fixing ring 13, which is fixedly sleeved on the outside of the first connecting head 9, and a bracket 14 is fixedly installed on the side wall of the fixing ring 13, and a fixing frame 15 is fixedly installed on the top of the bracket 14, and a pressure rod 16 is slidably installed on the top of the fixing frame 15, and a spring 17 is provided on the side wall of the pressure rod 16, one end of the spring 17 is fixedly connected to the top of the fixing frame 15, and the other end of the spring 17 is fixedly connected to the top of the pressure rod 16; the bracket 14 can lift the fire connection hose close to the first connecting head 9, and the pressure rod 16 can press the fire connection hose under the action of the spring 17 to fix the fire connection hose.

[0026] As a preferred technical solution of this embodiment, a unloading valve 12 is arranged between the output end of the foam pump 4 and the output pipe 19; the unloading valve 12 mainly controls and adjusts the working pressure and flow of the foam pump 4, which helps to maintain the stable operation of the system, protect the equipment, extend its service life, and improve the efficiency and safety of the overall fire-fighting operation.

[0027] As a preferred technical solution of this embodiment, a ball 18 is rollingly connected to the bottom end of the pressure rod 16; the ball 18 can reduce the friction between the pressure rod 16 and the fire hose, and reduce the wear of the pressure rod 16 on the fire hose.

[0028] A foam fire truck includes a fire extinguishing agent delivery device and a foam liquid tank 1. The foam liquid tank 1 is interconnected with a main liquid extraction pipe 7. The foam pump 4 is fixedly installed on the top of the foam liquid tank 1. A fixed platform 3 is fixedly installed on the top of the foam liquid tank 1. The fixed platform 3 is fixedly connected to an output pipe 19 and two liquid outlet pipes 10. The foam liquid tank 1 is used to store a certain amount of fire extinguishing agent, and the fire extinguishing agent in the foam liquid tank 1 is extracted through the main liquid extraction pipe 7 for fire extinguishing.

[0029] As a preferred technical solution of this embodiment, a replenishing port 2 is provided on the side wall of the foam liquid tank 1, and an inclined tube 20 is connected between the replenishing port 2 and the foam liquid tank 1, and a one-way valve 21 is provided inside the inclined tube 20; the replenishing port 2 is used for replenishing the fire extinguishing agent of the foam liquid tank 1 in a normal state, that is, when not extinguishing a fire, the inclined tube 20 provided at the replenishing port 2 facilitates the foam liquid fire extinguishing agent to flow into the interior of the tank body, and the one-way valve 21 prevents the internal liquid from overflowing through the replenishing port 2.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fire extinguishing agent delivery device, comprising a foam pump (4), wherein an input end of the foam pump (4) is connected to an input pipe (5), an output end of the foam pump (4) is connected to an output pipe (19), side walls on both sides of the output pipe (19) are connected to liquid outlet pipes (10), one end of the two liquid outlet pipes (10) is provided with a second connector (11), one end of the input pipe (5) is connected to a main liquid extraction pipe (7), and the device is characterized in that: A manual valve (6) is provided between the main liquid extraction pipe (7) and the input pipe (5); a spare liquid extraction pipe (8) is connected to the bottom end of the input pipe (5) and installed thereon; a first connector (9) is provided at one end of the spare liquid extraction pipe (8); and a limit position assembly is provided on the first connector (9).

2. A fire extinguishing agent delivery device according to claim 1, characterized in that: The limiting assembly comprises a fixing ring (13), the fixing ring (13) is fixedly sleeved on the outside of the first connecting head (9), a bracket (14) is fixedly installed on the side wall of the fixing ring (13), a fixing frame (15) is fixedly installed on the top of the bracket (14), a pressure rod (16) is slidably installed on the top of the fixing frame (15), and a spring (17) is provided on the side wall of the pressure rod (16), one end of the spring (17) is fixedly connected to the top of the fixing frame (15), and the other end of the spring (17) is fixedly connected to the top of the pressure rod (16).

3. A fire extinguishing agent delivery device according to claim 1, characterized in that: An unloading valve (12) is provided between the output end of the foam pump (4) and the output pipe (19).

4. A fire extinguishing agent delivery device according to claim 2, characterized in that: The bottom end of the pressure rod (16) is rollingly connected with a ball (18).

5. A foam fire truck, characterized in that: It comprises the fire extinguishing agent delivery device according to any one of claims 1 to 4, and also comprises a foam liquid tank (1), wherein the foam liquid tank (1) is interconnected with a main liquid extraction pipe (7), the foam pump (4) is fixedly installed on the top of the foam liquid tank (1), and a fixed platform (3) is fixedly installed on the top of the foam liquid tank (1), and the fixed platform (3) is fixedly connected to an output pipe (19) and two liquid outlet pipes (10).

6. A foam fire truck according to claim 5, characterized in that: A supplementation port (2) is provided in communication with the side wall of the foam liquid tank (1), an inclined pipe (20) is connected between the supplementation port (2) and the foam liquid tank (1), and a one-way valve (21) is provided inside the inclined pipe (20).

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