Centrifugal pump, to transport coarsely dispersed solid and fluid mixture, has hollow impeller with inner pipe and annular chambers branching laterally from inner pipe and opening into exit channel

摘要

The pump has a hollow impeller (1), which may be a rotor of a canned motor (14) or an air turbine and may be completely encapsulated. The impeller has several walls, with a central inner pipe (2) and at least one annular chamber (3) with blade mountings (5), whose inner and outer walls are formed in a wedge in the flow direction. The annular chamber branches laterally from the inner pipe in the impeller entry (6) and opens into an exit channel (7) with a guide unit (9) at an acute angle ( alpha ) at the end of the inner pipe in the exit (11) of the guide unit.