Positive displacement pump

摘要

Displacement pump comprises a pump housing (10), a pump rotor (16) eccentrically positioned in the housing chamber (12) and rotationally fixed to a drive shaft (14), and a rotor blade (18) which is radially displaceable in the pump rotor. The pump rotor has a rotor casing (24) provided with a blade guide strip (26) in which the rotor blade is held so that it can be radially displaced. The blade guide strip is at least partly closed on the end side of the pump rotor. Preferred Features: The rotor casing is a hollow cylinder with internal webs (28) extending in a radial direction. The blade guide strip extends along the internal diameter of the pump rotor.