Hunan foam fire extinguishing system PHYM | Hengyang foam proportioning mixing device YPHN

The pressure foam proportioning mixing device is mainly composed of a foam liquid pressure storage tank with a capsule and a pressure proportioning mixer made using the Venturi principle. When the water in the system pipe network passes through the pressure reducing hole of the proportioning mixer When the orifice plate is installed, a pressure difference will form before and after the orifice plate. A part of the water (3 or) at the high pressure enters the tank through the 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 foam. The mixed liquid, and the formed foam mixed liquid is output to the foam generating equipment (medium, low, and high multiple foam generators, foam guns, foam cannons, etc.) and mixed with air to produce foam fire extinguishing. This device is widely used in oil depots, chemical plants, hangars, oil fields, fuel boilers, underground garages and other places.
The series of pressure proportional mixing devices consists of pressure tanks, capsules, proportional mixers, safety valves, exhaust valves, pressure gauges, one-way valves and various control valves and pipelines. Pressure water is supplied from the pump unit, and the foam is replaced in a certain proportion and mixed with the pressure water to form a foam mixture. Since the capsule separates the foam liquid from water, the foam liquid is not used up once and can be used again next time with stable and reliable mixing accuracy.
Working Principle When the pressure water flows through the proportional mixer, part of the pressure water (3~) enters the foam liquid storage tank from the branch pipe to squeeze the capsule, displacing an equal amount of foam liquid and mixing it with the other part of water (~) in proportion The foam mixture mixed in the device is supplied to the foam generating device to generate air foam for fire extinguishing.