Method and a device for internal cleaning of a centrifugal rotor, and a centrifugal separator equipped with a device of this kind

US6080098A · kind A · utility

Assignee

• ALFA LAVAL CORPORATE AB · SE

Inventors

• Leonard Borgstrom · Tyresö, SE
• Patrik Brehmer · Täby, SE
• Claes-Goran Carlsson · Höör, SE
• Peter Franzen · Tullinge, SE
• Claes Inge · Hagfors, SE
• Torgny Lagerstedt · Stockholm, SE
• Hans Moberg · Stockholm, SE
• Stefan Szepessy · Stockholm, SE

Key dates

• Filing date: May 8, 1998
• Grant date: Jun 27, 2000
• Expiry date: May 8, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B15/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a centrifugal rotor there is an inlet chamber (7), a separation chamber (8) and an outlet chamber (10), which chambers are coupled in series. A stationary outlet member (16) is arranged to remove from a predetermined level in the outlet chamber (10) separated liquid during normal operation of the centrifugal rotor. For internal cleaning of the centrifugal rotor there is arranged within the outlet chamber (10) inside said predetermined radial level a preferably stationary reconducting member (26) that is dimensioned to accomplish a recirculation flow of cleaning liquid through said chambers (7, 8, 10) in the centrifugal rotor, which circulation flow is substantially larger than the flow of liquid which during normal operation of the centrifugal rotor passes through these chambers.