Solid-bowl centrifuge having a disk stack on the drum cover

US7083565B2 · kind B2 · utility

Assignee

• Westfalia Separator GmbH · DE

Inventors

• Jürgen Hermeler · Haltern, DE
• Paul Bruning · Oelde, DE
• Ludger Horstkötter · Ennigerloh, DE

Key dates

• Filing date: Oct 23, 2001
• Grant date: Aug 1, 2006
• Expiry date: Dec 17, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B2001/2083
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention is a solid-bowl screw centrifuge that includes a centrifugal drum. The drum has a drum casing and a screw with a screw body that is surrounded by a screw blade. The screw blade forms at least one screw spiral with a conveying path for transporting material to be centrifuged. The centrifuge also includes an inlet into the centrifugal drum, at least one solid matter discharge and at least one liquid outlet. The centrifuge includes a drum chamber that is axially closed by a drum cover having essentially a conical shape. Further included is a disk stack having at least one conical disk, and the disk stack is mounted to the drum cover directly upstream of the liquid outlet. At least a portion of the disk stack is arranged in a cylindrical section of the drum chamber that has an essentially constant diameter. A screw disk is arranged on the screw body between the drum cover and a first screw spiral.