Mobile foam tank (foam proportional mixing device), consisting of a cart, normal pressure foam tank, negative pressure proportional mixer, spray equipment (foam gun, etc.), water hose, safety valve, control valve and some auxiliary parts, etc.
When extinguishing a fire, the pipe joints at both ends of the negative pressure proportional mixer are connected to the fire hose and the pressure water source. When the pressure water flows through the proportional mixer of the foam fire extinguishing device, a negative pressure is formed in the proportional mixer chamber, so the foam fire extinguishing agent in the foam liquid storage tank enters the proportional mixer through the suction pipe under the action of atmospheric pressure, and is mixed with the pressure water to finally reach a certain proportion of the foam mixture. When the foam mixture with a certain pressure flows to the spray gun, due to the performance of the spray gun, a certain amount of air will be sucked in to make the foam mixture foam. So as to achieve the effect of foam fire extinguishing.
Scope of application: The foam fire extinguishing device is widely used in solid material warehouses, flammable liquid warehouses, boiler rooms, underground construction projects, cabins, oil depots, gas stations, chemical plants, hangars, docks, underground garages, dangerous goods warehouses and other places.
Features: The pressure drop of the foam tank is small, the sprayed foam has high energy and strong penetrating ability. Can quickly extinguish the fire. The mixing ratio of the foam proportional mixing device is quite stable, accurate and reliable, and can provide high-quality foam mixture. The trolley-type foam tank has strong mobility, and its light, mobile and flexible fire extinguishing performance covers a wide range and has a good fire extinguishing effect. Wide range of applications, no matter high, medium or low expansion foam fire extinguishing agents can be used.
