Arrangement for washing and dewatering cellulose pulp
US8048271B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 2008 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Nov 27, 2028 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F1/78
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for washing and dewatering cellulose pulp is disclosed comprising: a rotatable press roll having a perforated outer surface for dewatering the pulp; a stationary guide surface arranged at a distance from the perforated outer surface so as to enclose the press roll in the circumferential direction, such that a substantially closed vat is defined between stationary guide surface and the press roll; a pulp passage, being provided between the perforated outer surface and its stationary guide surface, such that during operation, pulp is transported in the direction of rotation and, at the end of the pulp passage, is pressed in a pinch between the press roll and a second press roll. A radial distance between the stationary guide surface and the associated press roll is generally increasing towards the pinch, such that the vat diverges, towards the pinch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.