Invention Grant
- Patent Title: Arrangement for washing and dewatering cellulose pulp
- Patent Title (中): 洗涤和脱水纤维素纸浆的布置
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Application No.: US12600939Application Date: 2008-05-21
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Publication No.: US08211273B2Publication Date: 2012-07-03
- Inventor: Rickard Andersson
- Applicant: Rickard Andersson
- Applicant Address: FI Helsinki
- Assignee: Metso Paper, Inc.
- Current Assignee: Metso Paper, Inc.
- Current Assignee Address: FI Helsinki
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Priority: SE0701269 20070525
- International Application: PCT/SE2008/050595 WO 20080521
- International Announcement: WO2008/147310 WO 20081204
- Main IPC: D21F1/00
- IPC: D21F1/00

Abstract:
Washing apparatus is disclosed comprising one or possibly two co-operating cylindrical press rolls, each having a perforated outer surface. A guide surface is provided at a distance from the perforated outer surface and encloses the respective press roll in the circumferential direction over at least 225° of the roll's circumference, wherein a pulp passage is provided between the perforated outer surface and the guide surface. During operation, pulp that is fed into the pulp passage is guided in a direction of rotation of the respective press roll and is pressed in a pinch between the press rolls. The radial distance between the outer surface of the press roll and the guide surface is substantially the same throughout a portion of the pulp passage in the circumferential direction.
Public/Granted literature
- US20110303380A1 Arrangement For Washing And Dewatering Cellulose Pulp Public/Granted day:2011-12-15
Information query
IPC分类:
D | 纺织;造纸 |
D21 | 造纸;纤维素的生产 |
D21F | 造纸机;用以生产纸张的方法 |
D21F1/00 | 制造连续纸幅的纸机湿部 |