Continuous backwashing filter apparatus with filtered fluid retention plate

US5128029A · kind A · utility

Inventor

• Karl Herrmann · Lenzkirch, DE

Key dates

• Filing date: Jun 11, 1990
• Grant date: Jul 7, 1992
• Expiry date: Jun 11, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2201/287
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Filter apparatus for continuously filtering fluids containing large amounts of particles, including large amounts of ultrafine particles. The filter apparatus includes filter media and a backwash system which continuously removes deposited filtrate from an inlet side of the filter media. The filter apparatus also includes means for at least temporarily retaining filtered fluid in an outlet chamber of the apparatus at a location immediately proximate an outlet side of the filter media, such that backwashing of the filter means occurs continuously and instantaneously as filtered fluid passes through the filter means.