Disc filter
US4678574A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1985 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Dec 3, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D33/804
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for improving the operation of a disc filter used for the filtering of fluids containing solid matter such as fibers. Known filtering methods have the drawback that the rate of water exhaustion is limited, because a vacuum tends to be created inside the sectors when the filtered fluid is drained by suction from the central channel of the disc filter. This drawback is an obstacle to increasing the speed of rotation and therefore to increasing the capacity of the disc filter. With the method of the present invention, this problem is solved by providing the disc filter with a means of admitting ambient air into the disc sectors and the central shaft channel and/or with equipment for blowing air into the sectors and the channel to remove the filtered fluid from them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.