Device for dehydrating and washing suspensions of fibrous material
US6311849A · kind A · utility
14Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1999 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Nov 24, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F1/78
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a device for dewatering and washing fibre stock suspensions with two counter-rotating rolls (2, 3), a stock feed (4, 5) and a stock discharge (6). It is mainly characterized by the headbox (4, 5) at the two rolls (2, 3) being arranged separately in the lower section of the rolls (2, 3), and a discharge screw (6) being foreseen for discharge of the filter mat below the gap between the two rolls (2, 3) and a washing zone (9", 10") in the upper part of the rolls (2, 3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.