Centrifugal separator

US5052996A · kind A · utility

Assignee

• Alfa Laval Separation A/S · SE

Inventor

• Christer Lantz · Stocksund, SE

Key dates

• Filing date: May 14, 1990
• Grant date: Oct 1, 1991
• Expiry date: May 14, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B1/08
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a centrifugal separator with a rotor having a separation chamber, a stack of frusto-conical separation discs arranged spaced from each other in the separation chamber coaxially with the rotor, and means defining centrally in the stack of separation discs radially inside thereof an inlet chamber. Inlet chamber is closed from connection with the separation chamber along the axial extension of the stack but communicates with the separation chamber at least at one end of the stack. The inlet means for introducing a liquid mixture into the inlet chamber and annular acceleration discs are placed coaxially with the rotor in the inlet chamber and arranged for gradual entrainment of incoming mixture in the rotation of the rotor. Each one of a plurality of the acceleration discs is made in one piece with a corresponding separation disc, so that a combination disc is formed, a plurality of such combination discs being arranged coaxially with the rotor and forming interspaces between adjacent combination discs. The central inlet chamber is delimited from the separation chamber by means of sealing members which close the interspaces between the combination discs thus fo…