Roller pump system or liquid feed pump device, roller pump system equipped with roller pump device or liquid feed pump device Operation method of liquid feed pump system and roller pump device or liquid feed pump device

摘要

PROBLEM TO BE SOLVED: To enable a method of notifying a normal state of a roller pump device or a liquid feeding pump device by injecting air bubbles into a tube and monitoring the moving state of the air bubbles. SOLUTION: The liquid feeding path is equipped with one roller pump device, and a predetermined volume of air is sucked by an suction input derived from the roller pump device, and the sucked air is injected into a liquid flow. The other roller pump device discharges the flow of the liquid to the discharge side tube portion, and the liquid in which the bubbles are mixed flows in the discharge side tube portion, and the discharge side tube portion has a means for forming bubbles in the liquid. A bubble sensor for measuring bubbles in the flow of the discharged liquid is provided on the outside of the pump. [Selection diagram] Fig. 1