Centrifugal separator with a discharge device

US5024648A · kind A · utility

Assignee

• Alfa Laval Separation A/S · SE

Inventors

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

Key dates

• Filing date: Jan 17, 1990
• Grant date: Jun 18, 1991
• Expiry date: Jan 17, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B11/02
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention concerns a centrifugal separator comprising a rotor, which forms an inlet (12) for a liquid mixture, a separation chamber (5), connected to the inlet (12), for separation of components in a liquid formed mixture and a discharge chamber (10). The discharge chamber is delimited by two axially separated end walls (12, 13) and a circumferential wall (14) extending between these and has an inlet (11, 11a) connected to the separation chamber (5), an outlet in a discharge device (17) arranged in the discharge chamber (10), and means, which together with parts of the inner surfaces of the discharge chamber (10) are arranged, during operation of the rotor, to entrain into rotation a component present in the discharge chamber (10) so that this forms a rotating liquid body. This liquid body has a radially inwards directed, essentially cylindrical, free liquid surface radially inside the circumferential wall (14). The discharge device (17) extends during operation from a central liquid free, part of the discharge chamber (10) to a level radially outside the free liquid surface. In order to gently into rotation entrain the component present in the discharge chamber (10) an…