Foam mixing device of foam supply vehicle and control method thereof

Abstract

The invention provides a foam mixing device of a foam supply vehicle and a control method thereof. The foam mixing device comprises a foam pump, a straight section water pipeline, a foam flowmeter, afirst electric proportioning valve and a second electric proportioning valve. An outlet of the foam pump is connected with a connector on the lateral wall of the straight section water pipeline sequentially through the foam flowmeter and the first electric proportioning valve. The end, connected with the outlet of the foam pump, of the foam flowmeter is connected with an inlet of the foam pump through the second electric proportioning valve. After a conveying water hose of a water tanker is connected with the pipeline of the foam supply vehicle, the foam supply vehicle directly injects foam raw liquid according to a preset foam proportion, the mixed liquid is then conveyed to a water pump water inlet of a frontline main fire fighting truck, and the frontline main fire fighting truck directly carries out coupling jetting foam operation for fire extinguishment.

Description

technical field [0001] The invention relates to the technical field of fire protection, in particular to a foam mixing device of a foam liquid supply vehicle and a control method thereof. Background technique [0002] Among the many fires, the number of petrochemical and other fires is increasing. Now the fire brigade mostly uses urban main battle foam fire trucks to extinguish fires. However, this truck is mostly used in cities. The volume of water tanks and foam tanks is small, so large-tonnage water supply trucks and For the replenishment of foam liquid supply trucks, the traditional solution is to supply water from large-tonnage water supply trucks to the water tanks of the main fire trucks, and the foam liquid supply trucks supply the original foam solution to the foam tanks of the main fire trucks, and then the main fire trucks The fire truck itself then mixes the foam to spray foam to extinguish the fire. [0003] At present, the liquid supply fire trucks of all dome...

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Problems solved by technology

[0007] The object of the present invention is to provide a foam mixing device of a foam liquid supply vehicle and its control method, to solve the problem in the prior art that the foam stock solution needs to be injected into the foam tank of the main fire fighting vehicle first, and then wait for the water supply vehicle to fill the water tank Foam fire extinguishing can only be carried out after the replenishment is complete, and it takes a long time to start the operation, which will delay the precious fire extinguishing time for fire extinguishing operations

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