Refiner and blade element
US9133579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2012 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Jun 25, 2032 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21D1/303
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A refiner (10, 11) for refining fibrous material has a first refining surface (1′) and a second refining surface (2′) arranged opposite to one another and mobile in relation to one another. The refining surfaces have refining surface portions (15, 27) feeding material to be refined and/or discharging refined material as well as refining surface portions (16) grinding the material to be refined, on the upper surface of which there are blade bars (17) and between them blade grooves (18). In the refining surface (1′, 2′) of the refiner (10, 11) the cross-sectional area (A) of at least some blade grooves (18) is arranged to decrease from one blade groove (18) to the next from the direction of the feed edge (13) to the direction of the discharge edge (14) of the refining surface (1′, 2′).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.