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.
PHYM series tank pressure air foam ratio mixing device is composed of ratio mixer, foam tank (rubber diaphragm), pressure gauge, exhaust valve, safety valve, stainless steel valve and pipeline; Part of the water enters the storage tank to squeeze the capsule, and through the air foam generator or injection equipment, the foam liquid is automatically squeezed and mixed with the liquid flow through the straw;
1. According to the installation dimensions in the manual, fix it on the concrete foundation with anchor bolts. It is better to install the device indoors.
2. The water inlet and outlet pipes are connected according to the interface flange on the manual.
3. The length of the drainage pipe is determined on site according to the existing building facilities and the location of the sewer.
4. After the installation is completed, the system sealing test should be carried out. Storage tanks and piping must not be infiltrated, and safety valves must not fail.
It is suitable for indoor and outdoor flammable liquid fires in petrochemical enterprises, petroleum enterprises, docks, fuel tank areas, power plants, hangars, oil-fired boiler rooms, underground garages, shipyards, etc.
