Rotary drum filter
US6267889A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2000 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Jan 26, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D33/09
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a filter assembly for producing a paste-like filter cake and a substantially solids free filtrate or permeate. The filter assembly includes a substantially cylindrical member having an exterior foraminous surface, the cylindrical member being mounted on an elongate shaft for rotating the surface about an axis defined by the shaft. The exterior foraminous surface is covered by a microporous filter media. A stationary housing is positioned adjacent a portion of the exterior surface of the cylindrical member. The stationary housing includes a filter feed inlet and a sealing device and is spaced from the exterior surface a distance sufficient to enable cross flow relative to the filter media. Unique filter seal members promote retention of fluid to be filtered in a filtration area defined by the housing and cylindrical member. As the cylindrical member is rotated about the axis, a cake removal or membrane cleaning device removes filter cake from the filter media. The unique filter seal members enable use of a rotating cylindrical member containing the filter media. The unique design of the filtration device provides high solids production similar to a drum or b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.