A large flow compressed air foam fire truck

Abstract

The invention belongs to the technical field of fire-fighting equipment, and is specifically a large-flow compressed air foam fire truck; it includes a body, a water inlet pipe, a foam liquid delivery pipe, an output pipe, an air inlet pipe, a nozzle and a controller; the water inlet pipe is close to The diameter of the end face of the foam liquid delivery pipe is reduced; the end of the delivery pipe near the water inlet pipe and the foam liquid delivery pipe is provided with a spoiler; the end face of the water inlet pipe near the foam liquid delivery pipe is inclined; One end of the water inlet pipe and the foam liquid delivery pipe is provided with a turbulence, and then cooperates with the inclined setting of the end face of the water inlet pipe close to the foam liquid delivery pipe, so as to achieve the purpose that the water can hit the surface of the spoiler blade and make the spoiler rotate. Furthermore, the water and the foam liquid are stirred to make the ratio of the water and the foam liquid more uniform, so that the foam generated by the contact between the mixed liquid and the air is more uniform and stable, and the use effect of a large-flow compressed air foam fire truck is improved.

Description

technical field [0001] The invention belongs to the technical field of fire-fighting equipment, in particular to a large-flow compressed air foam fire truck. Background technique [0002] When a fire breaks out in different places, different fire extinguishing agents are often required for fighting. For example, when some chemical materials are on fire, foam fire extinguishing agents must be used to fight fires, and different concentrations of foam fire extinguishing agents are required for different chemical materials; The fire trucks used are mostly equipped with water storage tanks and foam agent storage tanks, which are connected to the fire main pipe through a manifold, and booster pumps and manual control valves are respectively installed on the branch pipes connected to the water storage tanks and foam agent storage tanks; In the fire-fighting operations for fires in different places, the proportion of water and foam agent is completely controlled by manual control va...

AI Technical Summary

Problems solved by technology

[0002] When a fire breaks out in different places, different fire extinguishing agents are often required for fighting. For example, when some chemical materials are on fire, foam fire extinguishing agents must be used to fight fires, and different concentrations of foam fire extinguishing agents are required for different chemical materials; The fire trucks used are mostly equipped with water storage tanks and foam agent storage tanks, which are connected to the fire main pipe through a manifold, and booster pumps and manual control valves are respectively installed on the branch pipes connected to the water storage tanks and foam agent storage tanks; In the fire-fighting operations for fires in different places, the proportion of water and foam agent is completely controlled by manual control valve; the accuracy of the ratio control of water and foam agent depends entirely on the experience of firefighters; The inside of the channel cannot be fully stirred and mixed, so that the foam liquid cannot effectively form foam or the amount of foam generated is too small, which affects the fire extinguishing effect and causes waste of raw materials

[0003] A Chinese patent such as CN201210474375.2 discloses an explosion-proof foam fire truck. The technical solution includes a water storage tank, a foam agent storage tank and an engine, wherein the water storage tank and the foam agent storage tank are respectively communicated with the fire extinguishing agent main pipe through a transmission branch pipe. A fire-fighting water pump is set on the transmission branch pipe, an explosion-proof engine is used as the engine, an explosion-proof relay box and an explosion-proof metering control valve are set on the transmission branch pipe, and an explosion-proof DC-DC converter is set on the fire-fighting water pump; the explosion-proof relay box collects water pipes The mixing ratio of foam and water can be obtained through calculation; if the value is compared with the mixing ratio value given by the control panel, if they are not the same, the signal will be sent to the explosion-proof metering control valve to control the foam pipe. The flow rate of the road can be used to achieve a suitable mixing ratio; the matching engine and fire-fighting agent supply part of the explosion-proof foam fire truck have been treated with explosion-proof treatment, thereby avoiding the occurrence of secondary disasters, thereby meeting the requirements of explosion-proof safety; There are certain disadvantages. This technical solution cannot stir and mix the foam liquid and water well, thereby affecting the ratio of foam liquid to water, and then affecting the generation of foam, thus causing the limitations of this technical solution.

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