Centrifugal separator having end walls and a central shaft to resist axially directed forces

US6508752B1 · kind B1 · utility

Assignee

• ALFA LAVAL CORPORATE AB · SE

Inventors

• Ingvar Hallgren · Stockholm, SE
• Hans Martin · Kloten, CH
• Berndt Nyström · Stuvsta-Snättringe, SE

Key dates

• Filing date: Dec 29, 1999
• Grant date: Jan 21, 2003
• Expiry date: Dec 29, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B2001/2066
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a centrifugal separator for separating solid particles from a liquid, a centrifugal rotor (2) has two axially separated end walls (13, 14) and a surrounding wall (17) arranged therebetween. The end walls (13, 14) and the surrounding wall (17) surround a separation chamber (20) in which there are arranged separation discs (21) and one or more conveyor screws (29, 62) for axial transportation of separated solid particles. According to the invention the end walls are connected with each other through a central member (15), which is dimensioned in a way such that during the rotor operation it will take up a substantial part, preferably at least 80%, of the forces acting axially on the end walls (13, 14) as a consequence of centrifugally generated pressure of liquid present in the separation chamber (20).