Method for the backflushing of filters

US8349057B2 · kind B2 · utility

Assignee

• Balcke-Durr GmbH · DE

Inventors

• Wolfgang Holten · Düsseldorf, DE
• Arnold Kalka · Datteln, DE
• Miroslav Podhorsky
• Horst Hoffmann · Pentling, DE
• Friedel Kordas · Recklinghausen, DE

Key dates

• Filing date: May 28, 2008
• Grant date: Jan 8, 2013
• Expiry date: Jul 17, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D46/71
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Air filters comprising thin-walled textile filter bodies have to be cleaned periodically. According to a method known to this purpose, the filtered material is loosened using pressure pulses in a flushing air flow. According to the invention, for generating the pressure pulses a plurality of small, quick-acting valves are in each case briefly opened, the opening moments being adapted to one another in such a way that partial pulses released thereby arrive simultaneously at the inlet of a flushing line common thereto.