Multi-cylinder swash-plate pump with membrane seals for foodstuff, cosmetic or pharmaceutical applications

摘要

The pistons (51) are driven by the oscillating motion of a plate (31) which runs on an extension of the drive shaft (36). The axis (49) of the extension is angled relative to the drive shaft axis (25) so that the axes intersect in the mounting plane (50) of the membrane seal (30). An Independent claim is included for a method of pumping with a membrane pump where the transverse component of motion in the membrane due to the drive plate oscillation is essentially eliminated.