The foam tank is alsio called pressure foam proportional mixing device, which is mainly composed of a tank, a capsule, a proportional mixer, a water inlet pipe, a liquid outlet pipe, a drain valve, a sewage valve, a safety valve, and a pressure gauge.
The pressure-type foam proportional mixing device is mainly composed of a foam hydraulic pressure storage tank with capsules and a PHY-type pressure-type proportional mixer made of Venturi principle. When the water in the system pipe network flows through the pressure-reducing orifice of the proportional mixer, There is a pressure differential across the orifice. Part of the water (3% or 6%) at the high pressure 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 liquid outlet pipe of the foam tank to the low pressure part of the proportional mixer and water Mix to form a foam mixture, and the formed foam mixture is output to foam generating equipment (medium, low, high expansion foam generators, foam guns, foam cannons, etc.) and mixed with air to generate foam for fire extinguishing. Part of the water passes through the "inlet valve" pipeline Enter the water cavity of the storage tank and squeeze the capsule. Due to the small pressure difference between the front and back of the nozzle, the foam liquid in the capsule is squeezed out through the suction pipe and mixed with water to form a foam mixed liquid flow, which is sprayed by an air foam generator or other spray equipment. Use foam to extinguish fire. There is a capsule made of rubber in the storage tank, which separates the water and the foam liquid. After each use, the water and the foam liquid in the tank cannot be mixed and the performance of the original foam liquid remains unchanged, which can continue to be used, avoiding the Waste of foam solution.
Fetures:
1 The foam tank has a stable mixing ratio and high reliability, and can provide high-quality foam mixture.
2. The pressure drop of the foam tank is the smallest, and the sprayed foam fire extinguishing agent has high energy and strong penetration ability. Can quickly extinguish the fire. 3. Save foam liquid and reduce fire extinguishing costs. Because the capsule of the foam tank separates the foam liquid from water, the foam liquid is not used up at one time and can be used next time, and the mixing accuracy is stable and reliable.
3. Wide range of application, no matter high, medium or low expansion foam fire extinguishing agent can be used. The foam proportional mixing device of the automatic foam fire extinguishing system can use both foam sprinklers and sprinklers.
Application:
Widely used in oil storage tank farms, chemical plants, hangars, oil fields, fuel-fired power plants, boiler rooms, underground garages, dangerous goods warehouses, chemical warehouses and other places.
