Invention Grant
- Patent Title: Refiner blade element
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Application No.: US17004882Application Date: 2020-08-27
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Publication No.: US11891758B2Publication Date: 2024-02-06
- Inventor: Juha-Pekka Huhtanen , Marko Loijas
- Applicant: Valmet Technologies Oy
- Applicant Address: FI Espoo
- Assignee: Valmet Technologies Oy
- Current Assignee: Valmet Technologies Oy
- Current Assignee Address: FI Espoo
- Agency: Stiennon & Stiennon
- Priority: EP 193991 2019.08.28
- Main IPC: D21D1/22
- IPC: D21D1/22

Abstract:
A blade element pair (20) for a refiner (1, 2, 3) is intended for refining fibrous material. Each blade element (5, 5′, 8, 8′) of the blade element pair (20) has a refining surface (6, 9) with blade bars (16, 18) and blade grooves (17, 19) extending along the blade element (5, 5′, 8, 8′), and openings (14,15) extending through the blade element (5, 5′, 8, 8′). The openings (14, 15) in one of the blade elements (5, 5′, 8, 8′) is at different axial (A) or radial (R) positions from the openings (14,15) in the other blade element (5, 5′, 8, 8′) when the blade elements (5, 5′, 8, 8′) of the blade element pair (20) are set substantially opposite to each other.
Public/Granted literature
- US20210062422A1 REFINER BLADE ELEMENT Public/Granted day:2021-03-04
Information query