Hunan Weidun Fire Fighting Equipment Co., Ltd.

Firefighting foam tank> Mainly consists of a foam liquid pressure storage tank with a capsule and a pressure-type proportional mixer made using the Venturi principle. When the water in the system pipe network flows through the pressure reducing orifice plate of the proportional mixer, it A pressure difference will form between the front and back of the orifice plate. A part of the water (% or %) at the high pressure point enters the tank through the water inlet pipe of the foam tank, squeezes the capsule, and squeezes the foam liquid in the capsule through the outlet pipe of the foam tank to the low pressure part of the proportional mixer to mix with water to form a foam mixture. The foam mixture formed by the liquid is output to the foam generating equipment (medium, low and high expansion foam generator, foam gun, foam cannon, etc.) and mixed with air to produce foam for fire extinguishing. This device is widely used in oil depots, chemical plants, hangars, oil fields, fuel boilers, underground garages and other places.
>
> Series fire foam tanks are composed of pressure tanks, capsules, proportional mixers, safety valves, exhaust valves, pressure gauges, one-way valves and various control valves and pipelines. The pump unit supplies pressure water to replace the foam in a certain proportion and mix it with the pressure water to form a foam mixture. Since the capsule separates the foam liquid from water, the foam liquid can be used again next time if it is not used up once, and the mixing accuracy is stable and reliable.
>
>
> Working principle: When the pressure water flows through the proportional mixer, a part of the pressure water (%~%) enters the foam liquid storage tank from the branch pipe and squeezes the capsule to replace an equal amount of foam liquid. Mix it with another part of water (%~%) in the proportional mixer to form a foam mixture and provide it to the foam generating device to generate air foam for fire extinguishing.