Refiner and blade element
US9222220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2012 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Jun 24, 2032 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21D1/303
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A refiner comprises at least one first refining surface (1′) and at least one second refining surface (2′), which refining surfaces (1′, 2′) are arranged opposite to one another and mobile in relation to one another. In the refiner (10, 11) either at least the first (1′) or the second (2′) refining surface comprises refining surface portions (15, 27) feeding material to be refined and/or refining surface portions (15, 27) 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). Both in the first refining surface (1′) and in the second refining surface (2′) of the refiner (10, 11) the cross-sectional area (A) of at least some blade grooves (18) are arranged to change in the longitudinal direction of the blade grooves (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.