Device for cleaning and recovering paper pulp
US4447320A · kind A · utility
13Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1982 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Jan 21, 2002 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21D5/026
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A device for cleaning and recovering paper pulp includes a tank divided into inner and outer chambers by a fixed cylindrical sieve. The inner chamber also contains a rotating drum with blades that draw acceptable pulp from the outer chamber through the sieve to the inner chamber for discharge and moves rejected material through a helical path in the outer chamber toward another discharge point. The end of the helical path is blocked to form a dead space where the rejected material is concentrated and then periodically discharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.