To solve problems in difficulties in dissolving a powdery wettable powder in pure water discharged from a pump in the constitution for discharging the pure water from the pump, mixing in a chemical in the discharged pure water and spraying the agent.
This apparatus for diluting a wettable powder is obtained by placing a wettable powder tank 22 on a weight detecting means 84, arranging a detecting means 37 for the flow rate of pure water between a pump 2 and a chemical mixing part 28, installing a regulating means 80 for a charged amount of the chemical between the wettable powder tank 22 and the mixing part 28, detecting the amount reduced in the weight in the tank 22 with the weight detecting means 84, governing the speed and controlling the regulating means 80 for the charged amount so that the amount reduced may be proportional to the flow rate of the pure water. The pure water discharged with the pump 2 is discharged from a tapered nozzle 82 to the inlet side of a Venturi tube 81 and the wettable powder is conveyed to the inlet side of the Venturi tube 81 and mixed with the pure water.
KADOTA CHIAKI
OSUMI KAZUYASU
