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公开(公告)号：US12241203B2
公开(公告)日：2025-03-04
申请号：US18009456
申请日：2021-06-07
Applicant: Valmet Technologies Oy
Inventor： Marko Loijas , Matti Kaarineve
Abstract: A blade segment (4, 4a, 4b, 8, 8a, 8b) for a refiner (1) for refining fibrous material has first (20) and second (21) end edges and first (22) and second (23) side edges, the first (22) and second (23) side edges extending between the first (20) and second (21) end edges. The segment has a refining surface (5, 9) with blade bars (27) and grooves (28) on the segment front surface (25). At least one opening (14, 15) at the side edge (22, 23) extends through the whole thickness of the segment body (24) and towards the opposite side edge (22, 23). A guide element projects from the segment background surface (26) at the side edge which provides a guide surface that intensifies the feed of the material to be refined through the opening to the refining surface of the blade segment into the refining chamber of the refiner.
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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
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).
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公开(公告)号：US11891758B2
公开(公告)日：2024-02-06
申请号：US17004882
申请日：2020-08-27
Applicant: Valmet Technologies Oy
Inventor： Juha-Pekka Huhtanen , Marko Loijas
IPC: D21D1/22
CPC classification number: 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.
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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
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).
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Patent Agency Ranking
公开(公告)号：US20230243098A1
公开(公告)日：2023-08-03
申请号：US18009456
申请日：2021-06-07
Applicant: Valmet Technologies Oy
Inventor： Marko Loijas , Matti Kaarineve
Abstract: A blade segment (4, 4a, 4b, 8, 8a, 8b) for a refiner (1) for refining fibrous material has first (20) and second (21) end edges and first (22) and second (23) side edges, the first (22) and second (23) side edges extending between the first (20) and second (21) end edges. The segment has a refining surface (5, 9) with blade bars (27) and grooves (28) on the segment front surface (25). At least one opening (14, 15) at the side edge (22, 23) extends through the whole thickness of the segment body (24) and towards the opposite side edge (22, 23). A guide element projects from the segment background surface (26) at the side edge which provides a guide surface that intensifies the feed of the material to be refined through the opening to the refining surface of the blade segment into the refining chamber of the refiner.
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公开(公告)号：US20230228033A1
公开(公告)日：2023-07-20
申请号：US18007679
申请日：2021-06-02
Applicant: Valmet Technologies Oy
Inventor： Marko Loijas , Tomi Iisakkila , Håkan Sjöström
IPC: D21D1/24
CPC classification number: D21D1/24
Abstract: A blade segment (4, 8) for a refiner (1) for refining fibrous material has first (20) and second (21) end edges opposite one another in a direction of a longitudinal axis (LA) of the blade segment (4, 4a, 4b, 8, 8a, 8b), and first (22) and second (23) side edges which extend between the first end edge and the second end edge. The blade segment has a refining surface (5, 9) with blade bars (26) and grooves (27) therebetween on a front surface (25) of the blade segment (4, 8). At least one side edge (22, 23) has at least two edge portions (31, 33, 35, 41, 43, 45) arranged to deviate from the direction of the longitudinal axis (LA) of the blade segment (4, 4a, 4b, 8; 8a, 8b) and connected by an elbow (32, 34, 42, 44) between each two edge portions (31, 33, 35, 41, 43, 45).
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公开(公告)号：US20230183921A1
公开(公告)日：2023-06-15
申请号：US17924997
申请日：2021-05-12
Applicant: VALMET TECHNOLOGIES OY
Inventor： Marko Loijas , Ville Ruola
Abstract: A blade element (4, 8) for a refiner (1) for refining fibrous material has a first end edge (18) to be directed towards a feed of the fibrous material to be refined and a second end edge (19) to be directed towards a discharge of the refined fibrous material and a refining surface (5, 9) comprising blade bars (16) and blade grooves (17) therebetween. The refining surface (5, 9) has at least one equalizing pocket (23) extending along the refining surface (5, 9) of the blade element (4, 8) and crossing a number of the blade bars (16) and a number of the blade grooves (17) for equalizing flow of the fibrous material along the refining surface (5,9).
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公开(公告)号：US20230220624A1
公开(公告)日：2023-07-13
申请号：US18008625
申请日：2021-06-03
Applicant: Valmet Technologies Oy
Inventor： Marko Loijas , Tomi Iisakkila
IPC: D21D1/30
CPC classification number: D21D1/306
Abstract: A blade segment (4, 8) for a refiner (1) for refining fibrous material has a first (20) and a second (21) end edge and a first (22) and a second (23) side edge opposite to the first side edge (22) and a refining surface (5, 9) having blade bars (27, 27a, 27b) and grooves (28, 28a, 28b) therebetween on a front surface (25). At least one opening (14, 15) is on at least at one side edge (22, 23) which extends through the whole thickness of the blade segment body (24). There is at least one feed groove (29) on the refining surface, the feed groove (29) extending from the opening and crossing the blade bars and the blade grooves for feeding the material to be refined across the refining surface. The blade bars (27, 27a, 27b) of the blade segment are interlaced at the feed groove.
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公开(公告)号：US20210062422A1
公开(公告)日：2021-03-04
申请号：US17004882
申请日：2020-08-27
Applicant: Valmet Technologies Oy
Inventor： Juha-Pekka Huhtanen , Marko Loijas
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.
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