SPRAY SYSTEM FOR PRECISE DISCHARGING CHEMICAL LIQUID, AND SPRAY-TYPE PATTERN FORMING APPARATUS

摘要

A spray system for discharging chemical liquid includes: a chemical liquid supply device to supply a chemical liquid; a spray nozzle connected to the chemical liquid supply device through a liquid chemical supply passage to inject the chemical liquid on a printing roll; an air supply device to supply air to the spray nozzle through a common air supply passage and at least one first air branch passage; at least one first air pressure controller provided on the at least one first air branch passage to control pressure of the air to be supplied to the spray nozzle; a first valve provided between the at least one first air pressure controller and the spray nozzle on the at least one first air branch passage to adjust a supply amount of the air on the at least one first air branch passage; a ration pump provided between the chemical liquid supply device and the spray nozzle to uniformly supply the liquid chemical to the spray nozzle from the chemical liquid supply device; and a servo motor connected to the ration pump to control ration supply of the chemical liquid.