With the rapid development of my country’s social and economic construction, there are more and more high-rise buildings, and Fire monitor foam equipment valve system manufacturer enterprises continue to emerge, which put forward higher requirements for foam fire trucks. The following is a brief introduction to the structure of foam fire trucks.

Foam Extinguishing Mechanism

The foam has low relative density, good fluidity, strong durability and burning resistance, low thermal conductivity, and strong adhesion. These physical properties enable it to quickly cover the surface of the burning liquid, and can isolate combustible steam, air, and heat transfer , together with the cooling effect, played the role of fire extinguishing.

The structure and working principle of the foam fire truck

The foam fire truck consists of a car chassis and a special device for its upper part. Most of the foam fire trucks produced at home and abroad use the second-class general-purpose chassis provided by the vehicle manufacturer. Its special devices mainly include power take-off, water foam liquid tank, equipment box, pump room, fire pump, vacuum pump, foam proportional mixing device, etc.

Its working principle is: through the power take-off device, the power output of the automobile chassis engine is output, and the fire pump is driven to work through a set of transmission devices, and the water and foam are mixed in a certain proportion through the fire pump and the foam ratio mixing device, and then the fire monitor is used to and foam fire gun spray to extinguish the fire. Therefore, it is required that the chassis of the car must meet a certain load capacity and engine power. At present, the national standard has been formulated. The chassis is selected according to the national standard of “General Chassis Series, Types, Basic Parameters and Technical Requirements for Fire Trucks”. meet its requirements.