Centrifugal separator having a forcing device to create a radial leak flow

US9931646B2 · kind B2 · utility

Assignee

• ALFA LAVAL CORPORATE AB · SE

Inventors

• Roland Isaksson · Vimmerby, SE
• Peter Thorwid · Sundbyberg, SE

Key dates

• Filing date: Aug 31, 2012
• Grant date: Apr 3, 2018
• Expiry date: Oct 30, 2033

Classification

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

Abstract

A centrifugal separator includes a frame and a rotating part including a spindle and a centrifuge rotor enclosing a separation space. An inlet channel provides fluid communication into the separation space and includes a rotary channel part, a frame channel part, and a first seal at the interface between the rotary and frame channel parts. An outlet channel provides fluid communication out from the separation space and includes a rotary channel part, a frame channel part, and a second seal at the interface between the rotary and frame channel parts. The inlet and outlet channels are arranged concentrically with each other. A forcing device is provided to generate a leak flow through one of the first and second seals in a first direction from the outlet channel to the inlet channel and to counteract leakage in the opposite direction.