公开(公告)号：US10464068B2

公开(公告)日：2019-11-05

申请号：US15523350

申请日：2015-10-23

Applicant: VALMET TECHNOLOGIES OY

Inventor： Håkan Sjöström ,  Matti Kaarineva ,  Tomi Iisakkila ,  Marko Loijas ,  Marcus Sjölund ,  Karl Lönngren

IPC: B02C17/00 ,  B02C7/12 ,  D21D1/30

Abstract: A blade element (12) for a refiner (10, 11) for refining fibrous material has an inner edge (13) and an outer edge (14) and first blade bars (18) and first blade grooves (19) therebetween, the first blade bars and the first blade grooves extending toward the outer edge of the blade element. At top surfaces of the first blade bars there are second blade bars (20) and second blade grooves (21) therebetween. At least some of the second blade bars (20) lying on an outer end portion (12b) of the blade element (12) have a width which is larger than a width of second blade bars (20) lying on an inner end portion (12a) of the blade element (12) and/or is increasing in direction toward the outer edge (14) of the blade element (12).

公开(公告)号：US20170320063A1

公开(公告)日：2017-11-09

申请号：US15523350

申请日：2015-10-23

Applicant: VALMET TECHNOLOGIES OY

Inventor： Håkan Sjöström ,  Matti Kaarineva ,  Tomi Iisakkila ,  Marko Loijas ,  Marcus Sjölund ,  Karl Lönngren

IPC: B02C7/12 ,  D21D1/30

Abstract: A blade element (12) for a refiner (10, 11) for refining fibrous material comprises an inner edge (13) and an outer edge (14) and first blade bars (18) and first blade grooves (19) therebetween, the first blade bars and the first blade grooves extending toward the outer edge of the blade element. At top surfaces of the first blade bars there are second blade bars (20) and second blade grooves (21) therebetween. At least some of the second blade bars (20) lying on an outer end portion (12b) of the blade element (12) have a width which is larger than a width of second blade bars (20) lying on an inner end portion (12a) of the blade element (12) and/or is increasing in direction toward the outer edge (14) of the blade element (12).