Fluid filtering unit with movable collector for cleaning
US5558761A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1995 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Jan 25, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/688
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The fluid filtering unit comprises a filter element through which fluid being filtered must pass and a device for cleaning the filter element in situ without interruption of the filtering process. The cleaning device comprises a collector movable between a first position and a second position relative to the filter element on the upstream side of the filter element during a cleaning operation, a device for urging the collector at least in use towards its first position relative to the filter element, an arrangement for moving the collector from its first position to its second position relative to the filter element against the force of the urging device, and a valve arrangement for automatically connecting the collector to dump at a pressure less than that of the fluid being filtered as the collector moves from its first position relative to the filter element towards its second position relative to the filter element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.