Centrifugal separator for separating solids from a liquid mixture centrally fed through a gear device

US6712751B2 · kind B2 · utility

Assignee

• ALFA LAVAL CORPORATE AB · SE

Inventors

• Klaus Stroucken · Åkersberga, SE
• Rolf Ridderstrale · Stockholm, SE

Key dates

• Filing date: Oct 4, 2002
• Grant date: Mar 30, 2004
• Expiry date: Oct 4, 2022

Classification

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

Abstract

In a decanter centrifuge having a rotor and a screw conveyor the rotor is suspended only at its one end, the rotational axis of the rotor extending vertically. The inlet of the rotor for a sludge containing liquid to be separated as well as the rotor outlet for liquid having been freed from sludge are situated at the upper end of the rotor, whereas a sludge outlet for separated sludge is situated at the lower end of the rotor. The rotor as well as the screw conveyor are adapted to be driven through shafts situated at the upper end of the rotor. By the invention it becomes possible by simple implementation to adapt the decanter centrifuge for different separation duties, since the location of the sludge outlet can be chosen freely without other parts of the decanter centrifuge preventing this.