Dispenser with membrane piston for liquid or paste - has membrane piston with corrugated membranes and piston with stroke adjustment screw

摘要

The dispenser has a membrane piston with one or more membranes which is guided by a guide bolt and driven by a piston via a hydraulic fluid. The stroke of the piston (10) can be varied using an adjustment screw (20) acting on a piston rod (17). Chambers (11, 13) which are filled with hydraulic fluid and connected via a bore are held at raised pressure by a non-return valve. One or more corrugated plastics or metal membranes are used. Alternatively, a corrugated tube can be used. USE/ADVANTAGE - For filling cartridges, bags etc. Dispensing inaccuracies caused by uncontrolled membrane deformations are eliminated.