Piezoelectrically operated dosing pump for conveying and dosing small liquid quantity with higher pressure, has movable piston, which is assigned to piezoelectric stack translator, which varies in length in dependence of applied voltage

摘要

The piezoelectrically operated dosing pump has a movable piston, which is assigned to a piezoelectric stack translator (6), which varies in length in dependence of the applied voltage. The valve has different natural frequencies and the movement of the piezoelectric stack translator is guided by the applied voltage. The adjusting volume flow rate is controlled in both moving directions of the differential piston and regulated according to the requirement.