Method and apparatus for the after-treatment of the thick material in the thick material discharge region of a solid bowl worm centrifuge

US5176616A · kind A · utility

Assignee

• Kloeckner-Humboldt-Deutz AG · DE

Inventors

• Reinhold Schlip · Herrsching am Ammersee, DE
• Wolfgang Epper · Bergheim, DE

Key dates

• Filing date: Feb 18, 1992
• Grant date: Jan 5, 1993
• Expiry date: Feb 18, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B1/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A centrifugal solid bowl worm separator having an outer cylindrical drum and an inner rotatable worm with helical flights on the outer surface with the drum arranged to receive a material to be separated in light and heavy fractions or phases and the mechanism provides for a method of injecting and mixing a fluidizing substance into the heavy fraction material within the drum before it leaves the drum to mix with the heavy fraction within the drum. The fluidizing substance lowers the density of the heavy fraction to enable its discharge by the worm flights. The hydraulic pressure of the liquid helps push the heavy fraction out of the separator which prevents a reverse flow and intermixing of the heavy fraction with the liquid fraction.