Apparatus and method for treatment of pulp
US8303771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2008 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Oct 23, 2028 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C9/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Washing apparatus as well as methods for washing and dewatering a cellulose pulp are disclosed comprising a rotary drum with outer compartments for pulp washing, and a stationary casing surrounding the drum to define an annular space between the casing and the drum which is divided into zones by longitudinal seals. The function of the seals is optimized by a force measurement device for measuring forces acting on the longitudinal seal for measuring a biasing force of a spring package in the measurement device and for measurement of a force acting on a load transmission shaft of the device as well as an extractor for extracting a force acting against the seal in a direction away from the drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.