Screen for fiber suspensions and method for the manufacture thereof

US6789681B2 · kind B2 · utility

Assignee

• Voith Paper Patent GmbH · DE

Inventors

• Erich Czerwoniak · Pfullingen, DE
• Wilhelm Hagen Hutzler · Reutlingen, DE
• Erwin Mayer · Burghausen, DE
• Jochen Gustav Pfeffer · Eningen unter Achalm, DE

Key dates

• Filing date: Aug 15, 2002
• Grant date: Sep 14, 2004
• Expiry date: Apr 10, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49938
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In the rotationally symmetrical screen for fiber suspensions with a series of straight profiled bars which extend the direction of the screen axis and form slot-shaped screen openings between them, and with several ring-shaped profiled bar supports lying in planes extending perpendicularly to the screen axis, each of the profiled bar supports having in its edge region adjacent to the inlet side of the screen a series of cutouts opening towards the inlet side of the screen for insertion of the profiled bars, with the shape of these cutouts corresponding to the configuration of the cross-sectional regions of the profiled bars held positively in these cutouts, in order to simplify insertion of the profiled bars into the cutouts of the profiled bar supports each profiled bar has for each profiled bar support a recess which decreases the width of this cross-sectional region of the profiled bar, and the recesses lie outside the profiled bar supports in the finished screen.