Centrifuge drum for clarifying or separating centrifugates

US4961723A · kind A · utility

Assignee

• Westfalia Separator GmbH · DE

Inventors

• Paul Bruning · Oelde, DE
• Wilfried Mackel · Oelde, DE
• Ulrich Wrede · Ennigerloh, DE
• Willi Niemerg · Oelde, DE

Key dates

• Filing date: Feb 6, 1989
• Grant date: Oct 9, 1990
• Expiry date: Feb 6, 2009

Classification

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

Abstract

The intake space of a centrifuge drum is divided into a vestibule with ribs and an intake chamber without ribs. The vestibule communicates with the intake chamber through an annular gap between the outside diameter of a disk secured to an intake pipe and the inside diameter of the intake space. The intake chamber communicates with a set of disks through channels. The diameter D.sub.K of the intake chamber at the level of the channels is longer than the diameter D.sub.F that must be maintained at the upper surface of the centrifugate in a skimming chamber during operation. Since the incoming centrifugate does not rotate in the intake chamber and since no rotational pressure is accordingly generated, the intake pressure in the intake pipe is transmitted when the intake chamber is full to the centrifugate in the intake chamber, until the requisite level of centrifugate in the skimming chamber is attained. The pressure that is transmitted to the annular gap is compensated for by the rotational pressure of the centrifugate in the vestibule, allowing absolutely smooth distribution of the centrifugate when the intake chamber is full throughout the whole operational range of the drum.