Patent · US Active

Wiping element for impeller leading edges of wastewater pumps

US12044252B2 · kind B2 · utility

0Cited by

5References

18Claims

0Family size

Assignee

KSB SE & Co. KGaA · DE

Inventors

Christoph Jaeger · Bischofswerda, DE
Mateusz Kaminski · Loos, FR
Enrico Mueller · Frankenthal, DE
Nicolas Petit · Sceaux, FR

Key dates

Filing date	Aug 3, 2020
Grant date	Jul 23, 2024
Priority date	—
Expiry date	Aug 5, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D29/2288
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A wastewater pump for conveying solids-laden wastewater includes a spiral housing with an inlet opening, an impeller with at least one vane having a leading edge running from the impeller hub in a backwardly curved manner, and at least one finger for wiping off contaminants from the leading edge. The at least one finger is arranged on the inlet inner wall and extends in the direction of the impeller rotational axis. At least one groove is present in a suction-side inner wall of the housing to receive and convey material that is removed by the at least one finger from the leading edge to. The leading edge of the impeller and the surface of the at least one finger which faces toward the leading edge are at an angle of 5° to 75° with respect to the rotational axis.

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