Submersible motor-driven pump for viscous media, e.g. liquid manure

摘要

The pump has a drawing impeller (11) which is fixed to the motor drive shaft (17). There is a guiding impeller (21) in front of the drawing impeller, in the conveying direction of the medium. The guiding impeller works as an intake for the drawing impeller and is screwed to the drawing impeller. The axial connection of the guiding and drawing impellers and the drive shaft is given through a single screw (34). The guiding impeller comprises two identical spirals (23,24) which are displaceable about 180 degrees to each other, and are fixed against rotation on the spindle part (22) of the guiding impeller.