Impeller having transport elements disposed on a pressure side of a cover disk for a centrifugal pump for dirty liquids

US5605434A · kind A · utility

Assignee

• KSB Aktiengesellschaft · DE

Inventors

• Christian Haag · Assamstadt, DE
• Christoph Jaeger · Bischofswerda, DE
• Wolfgang Kochanowski · Windesheim, DE
• Thomas Pensler · Frankenthal, DE
• Rolf Witzel · Bischofswerda, DE

Key dates

• Filing date: Sep 29, 1995
• Grant date: Feb 25, 1997
• Expiry date: Sep 29, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04D29/225
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An impeller of a centrifugal pump for transporting dirty liquids has transport elements, for example back-vanes or grooves disposed on the pressure side of a cover disk. The transport elements are arranged asymmetrically and are limited to one arc sector of the cover disk to create a transverse stream that rotates with the impeller. Solids which have penetrated into the space to the side of the wheel are carried out by this stream in the direction of the transport elements.