Pressure sorter

US5255788A · kind A · utility

Assignee

• J.M. Voith GmbH · DE

Inventors

• Reimund Rienecker · Heidenheim, DE
• Peter Schweiss · Langenau, DE
• Theodor Bahr · Heidenheim, DE

Key dates

• Filing date: Jul 10, 1992
• Grant date: Oct 26, 1993
• Expiry date: Jul 10, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D35/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A pressure sorter for a suspension flow includes a cylindrical housing having at least one inlet opening and at least one outlet opening with a defined pressure drop therebetween. A rotationally symmetric screen basket defining an axis is disposed within the housing. The screen basket has a plurality of openings defining a total screen perforation passage area. The axis of the screen basket is positioned offset a distance of 6 to 12% of the diameter of the screen basket. The axis of the screen basket is disposed in a plane which extends through the housing axis and is perpendicular to the housing outlet opening. A rotor and suspension sorting space are disposed centrically within the screen basket. An accepts space is disposed radially outward of the screen basket between the screen basket and the housing. The accepts space has a cross section causing a pressure drop between the suspension sorting space and the accepts space resulting in a suspension flow through the screen openings having a maximum velocity of 2.5 m/s, and a deviation to higher suspension flow velocity values from an arithmetic mean value based on the total screen perforation passage area across the entire screen …