CONTROL OF CRACK GEOMETRY IN AN ECCENTRIC SCREW PUMP

摘要

the invention relates to an eccentric screw pump (1) for transporting liquids loaded with solids, with a helically wound rotor (4), a stator (2), with an inlet (10) and an outlet (12), in which the rotor (4) is rotatably arranged around a longitudinal axis (l1), and which has a helical inner wall (8) corresponding to the rotor (4), the rotor (4) having a tapered shape in the direction of the outlet (12) or inlet (10), preferably conical, and / or has a variable eccentricity (e1, e2), and the rotor (4) and the stator (2) are arranged and configured one in relative to the other in such a way that at least one chamber (5) is formed, which serves to transport the liquid, and the chamber (5) is separated by a narrowing (7), especially the sealing line (d). the invention is distinguished by a displacement device for displacement of an axial relative position of rotor (4) and stator (2), the displacement device (39) being configured to widen the narrowing (7) between the rotor (4) and the stator (2).