Patent · US Active

Centrifugal pump in particular for waste water or polluted water

US9869326B2 · kind B2 · utility

8Cited by

4References

11Claims

0Family size

Assignee

WILO SE · DE

Inventors

Holger Stark · Allmersbach im Tal, DE
Alfred J. Otto · Oberkotzau, DE
Wolfgang Geier · Hof, DE
Bernd Kretschmer · Hof, DE
Wolfgang Stroessner · Hof, DE

Key dates

Filing date	Dec 2, 2013
Grant date	Jan 16, 2018
Priority date	—
Expiry date	Sep 15, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D29/708
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a centrifugal pump, in particular a waste water submersible pump having an impeller (1), of which the end face facing the pump intake opening is open and only the end face of the impeller facing away from the intake opening (8) is covered by a circular coaxial impeller hub (2), on which the curved vanes (3, 4) are fastened, and in particular molded on, wherein the base plate (7) having the intake opening (8) facing the impeller (1) or at least one segment (7a) of the base plate is mounted so as to be movable against spring pressure (20) in such a way that the distance thereof from the impeller (1) and thus from the impeller vanes (3, 4) changes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.