Dewatering device
US6461505B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2001 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | May 4, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus is disclosed for dewatering aqueous suspensions including a pair of rotatable rolls forming a nip therebetween, so that the aqueous suspension can pass downwardly through the nip and be dewatered by removing a filtrate from the suspension, and the dewatered suspension can pass downwardly from the nip, at least one of the rolls being liquid permeable, and at least one screen adjacent to the roll and disposed below the nip, the screen is separated from the roll by a predetermined distance and extends along its length, the predetermined distance being a sufficient distance so that a film of filtrate on the roll passes between the roll and upper end of the screen on one side of the screen and the dewatered suspension passes on the other side of the screen so that the filtrate is prevented from contacting the dewatered suspension below the nip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.