Centrifugal separator

US4861329A · kind A · utility

Assignee

• Alfa Laval Separation A/S · SE

Inventors

• Leonard Borgstrom · Tyresö, SE
• Claes-Goran Carlsson · Höör, SE
• Peter Franzen · Tullinge, SE
• Claes Inge · Hagfors, SE
• Torgny Lagerstedt · Stockholm, SE
• Hans Moberg · Stockholm, SE
• Olle Nåbo · Tullinge, SE

Key dates

• Filing date: Dec 6, 1988
• Grant date: Aug 29, 1989
• Expiry date: Dec 6, 2008

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B7/14
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In the rotor of a centrifugal separator a stack of conical separation discs (4) is arranged concentric with the rotor axis. The rotor has an inlet for a dispersion and an outlet for liquid having been freed from a substance dispersed therein. In each space between adjacent separation discs (4) the disc surface from which the dispersed substance moves away as a consequence of centrifugal force during rotor operation has flow influencing members, whereas the surface of the other separation disc, situated opposite to said members, is substantially smooth. The relation (L/H) where L is the distance between adjacent flow influencing members and H is the distance between the separation discs, and the relation (1/H) where 1 is the extension of each flow influencing member along the disc surface and H is the distance between the separation discs, are larger than zero but less than 2.