Centrifuge with a self-emptying drum

US4717376A · kind A · utility

Assignee

• Westfalia Separator GmbH · DE

Inventors

• Paul Bruning · Oelde, DE
• Willi Niemerg · Oelde, DE

Key dates

• Filing date: Jul 3, 1986
• Grant date: Jan 5, 1988
• Expiry date: Jul 3, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B1/14
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The centrifuge has a self-emptying drum. The jacket of the drum has expulsion apertures that lead from the solids space and that can be closed off by a piston slide. With the piston slide is associated a closure chamber. The closure chamber has channels for supplying closure liquid and communicates through a let-off channel in the form of an annular gap with a chamber. The inside diameter of the chamber equals the outside diameter of the closure chamber. The chamber can accommodate all the closure liquid in the closure chamber. This makes it possible to completely empty the closure chamber, so that there is no residual closure force on the piston slide.