1.Air from the air supply source branches at the inlet of two way solenoid valve. Through the purge air control valve , core purging for bleeding from the shooting hose and out purging for drying the end of sprinkling nozzle are usually effected.
2.The two way solenoid valve is controlled by the concentration timer preset in the sequencer, and every time the water feed pulse signal is inputted to this timer, it is excited for a specific time.
3.When the two way solenoid valve is excited, the valve opens to let air flow from the inlet to outlet, and the driving air is supplied into the air ejector for a specific time.
4.By the vacuum built up in the air ejector, a specified amount of powder guided from the hopper is supplied outside through the shooting hose.