CONTINUOUS LIQUID FEED SYSTEM AND CONTROL METHOD THEREOF

摘要

33CONTINUOUS LIQUID FEED SYSTEM AND CONTROL METHOD THEREOFAbstract of the DisclosureA continuous liquid feed system sucks and pressurizes5 liquid accommodated in a container to be discharged to a demander. The continuous liquid feed system includes: plural pumps which are in communication with the container; valves each of which is provided for each pump and which are arranged between the pumps and the container;10 motors each of which is provided for each pump to drive the same; and a controller which controls the motors and the valves. When discharging a predetermined flow quantity with one pump, the controller allows the other pump to perform a suction operation or stops the other15 pump, decreases the flow quantity discharged by the one pump in a predetermined period from the time the one pump starts to discharge and in a predetermined period immediately before completion of the discharge, and allows the other pump to discharge only the decreased flow20 quantity. It is possible to suppress variations in the feeding amount of liquid even when a pump used for a liquid feed operation is switched to another while preventing an interruption in backflow.