Pressurized filter
US4264445A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1979 |
| Grant date | Apr 28, 1981 |
| Priority date | — |
| Expiry date | Nov 26, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D35/147
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An intermittently operating pressurized filter for concentrating a solid matter suspension, comprising a filtering tank with an inlet conduit provided with a feed pump for introducing under pressure the suspension to be filtered, and a draining conduit provided with valve for removal of the concentrated sludge, and a plurality of filtering elements suspended from the roof, through which the filtrate flows and of which the interior communicates with a filtrate collecting tank located above and which thereby collect on their external surface sludge, which has been arranged to be periodically removed by voiding the pressure within the filtering tank by opening for the suspension therein an exit flow path through a draining conduit. The filtrate in the collecting tank will pass in countercurrent fashion through the filtering elements. In the pressurized filter the filtrate has been arranged to be removed during the filtering step by a filtrate draining conduit departing from the collecting tank, by effect of the pressure produced by the feed pump in the suspension inlet conduit. The collecting tank is of enclosed construction. The sludge has been arranged to be removed from the surface…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.