公开(公告)号：US20250043510A1

公开(公告)日：2025-02-06

申请号：US18698037

申请日：2022-10-07

Applicant: Valmet Technologies Oy

Inventor： Håkan Sjöström ,  Jukka Virtanen

IPC: D21D1/30

Abstract: A refining segment (4, 8) for a refiner (1) for refining fibrous material has a body (20) with a front side (21) and a backside (22). The front side has a refining surface (5, 9) and the backside has a background surface (23). The refining segment has a first end edge (15) and a second end edge (16) opposite to the first end edge, and a first side edge (17) and a second side edge (18) opposite to the first side edge. The first side edge and the second side edge extend between the first end edge and the second end edge. The refining segment has backside support projections (29, 30) which project from the background surface and extend substantially along the first side edge and the second side edge without support projections extending substantially along the first end edge and the second end edge on the background surface.

公开(公告)号：US12186691B2

公开(公告)日：2025-01-07

申请号：US17323071

申请日：2021-05-18

Applicant: Valmet Technologies Oy

Inventor： Marilene Amaral Leite Manoel ,  Rafael de Felipe Zica ,  Siterzany Fonseca ,  Wallace Farias Bacelar ,  Thiago Pavan

IPC: B01D46/00 ,  B01D46/02

Abstract: A leaf filter bag for a leaf (110) of a pressure leaf filter (100) has a first sheet portion (50), adjacent to a second sheet portion (60). The first sheet portion (50) is connected to the second sheet portion (60) at a first edge (10), a second edge (20) and a third edge (30). Forth edges of the sheet portions define an openable and closable edge (40) which has an open position and a closed position, which allows inserting a frame (122) of the leaf (110) into the leaf filter bag (1) through an opening formed by the openable and closable edge (40) in the open position. A zipper (42) closure (41) is provided at the openable and closable edge (40), and a further hook-and-loop fastener closure may be provided.

公开(公告)号：US20240280258A1

公开(公告)日：2024-08-22

申请号：US18569930

申请日：2022-06-29

Applicant: Valmet Technologies Oy

Inventor： Juha HILJANEN ,  Pekka LEHTONEN ,  Juha OJANPERÄ ,  Tuomas KANNIAINEN

IPC: F23C10/20 ,  F23C10/24

CPC classification number: F23C10/20 ,  F23C10/24

Abstract: A grate assembly for use in a bottom section (28) of a combustion chamber (12) of a fluidized bed boiler (10), comprising: a grate bottom wall (32); a protective refractory material layer (36); a plurality of nozzle devices (38) for supplying fluidizing primary air; at least one grate module (40) formed on the grate bottom wall (32). Each grate module (40) comprises a solids removal opening (42); a plurality of concentric landings (46) formed in the refractory material layer (36) and separated by frontal surfaces (48) between the landings. Each frontal surface (48) surrounds one of the landings and follows the shape of the perimeter of a rectangle or a rectangle with at least one shaped corner. The landings (46) define a stepped structure. Each landing comprises a group of the nozzle devices embedded in the refractory material layer (36) and adapted to jet the air through one of the frontal surfaces (48) along one of the landings (46) that is adjacent to the frontal surface.

公开(公告)号：US20240181686A1

公开(公告)日：2024-06-06

申请号：US18556437

申请日：2022-04-20

Applicant: Metsä Spring Oy ,  Valmet Technologies Oy

Inventor： Arto HAAVANLAMMI ,  Jarkko TUOMINEN

IPC: B29C44/38 ,  B29C44/02 ,  B29C44/58 ,  B29K105/04

CPC classification number: B29C44/385 ,  B29C44/02 ,  B29C44/58 ,  B29K2105/04

Abstract: A method for forming a molded fiber product includes forming a layer of foam including fibers, water, air and foaming chemical by a pair of molds. In addition, in the method, foam is fed between the molds, and the pair is closed and opened. Foam is fed via one of the molds while the pair is sealed from its sides.

公开(公告)号：US20240084510A1

公开(公告)日：2024-03-14

申请号：US18178133

申请日：2023-03-03

Applicant: Valmet Technologies Oy

Inventor： David BOUTHILLETTE ,  Stephane LECUYER ,  Jonathan OLSZAK

IPC: D21G3/00

CPC classification number: D21G3/005

Abstract: The invention relates to a bracket for a pivot rod in a doctor arrangement. The bracket has a base with a mounting aperture and adjacent ears with a hole for a pivot rod arranged perpendicular to the base. The bracket is a cast or 3D-printed piece. The invention also relates a doctor arrangement for a fiber web machine.

公开(公告)号：US20230321858A1

公开(公告)日：2023-10-12

申请号：US18131991

申请日：2023-04-07

Applicant: Valmet Technologies Oy

Inventor： Jaakko Haapanen ,  Marko Jorkama ,  Jari Kääriäinen ,  Marko Kääriäinen ,  Kenneth Åkerlund

IPC: B26D5/32 ,  B26D1/14 ,  B65H35/00 ,  B65H43/00

CPC classification number: B26D5/32 ,  B26D1/141 ,  B65H2301/4148 ,  B65H43/00 ,  B65H35/008

Abstract: A system (50) for controlling performance of a slitter-winder (25) and/or a fiber web production line (100) has an advisor unit (34, 36, 37) with a processor and a memory including computer program code, configured to cause the advisor unit (34, 36,37) to generate and transmit signals as first control data to the slitter-winder (25) and/or as second control data to the fiber web production line (100) based on information data received from the slitter-winder (25) and the fiber web production line (100) to control performance of the slitter-winder (25) and/or the fiber web production line (100). Performance of a slitter-winder (25) and/or a fiber web production line is controlled by receiving information data from the slitter-winder and the fiber web production line (100), processing the received information data according to a predetermined configuration, based on the processed data; generating signals according to the predetermined configuration to control the performance.

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

IPC: D21D1/24 ,  D21D1/30

CPC classification number: D21D1/24 ,  D21D1/306

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.

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).

公开(公告)号：US11629438B2

公开(公告)日：2023-04-18

申请号：US17553301

申请日：2021-12-16

Applicant: Valmet Technologies Oy

Inventor： Hannu Martikainen ,  Mari Seppänen ,  Seppo Taipale

IPC: D03D11/00 ,  D03D1/00 ,  D21F1/00 ,  D21F7/08

Abstract: An industrial textile has two layers, a web-side layer and a wear-side layer. The web-side layer has machine direction yarns (1) and binding cross-machine direction yarns (5). The wear-side layer has machine direction yarns (3) and cross-machine direction yarns (4). The binding cross-machine direction yarns (5) extend from the web-side layer to the wear-side layer and bind a portion of the wear-side layer machine direction yarns (3) to bond the web-side layer and the wear-side layer together, and wherein the web-side layer is a non-plain weave.

公开(公告)号：US11619000B2

公开(公告)日：2023-04-04

申请号：US16769475

申请日：2018-12-20

Applicant: Valmet Technologies Oy

Inventor： Risto Hämäläinen ,  Seppo Tuominiemi

IPC: D21C11/08 ,  D21C11/00 ,  D21C11/06

Abstract: The invention relates to a method and a system for adjusting S/Na-balance of a pulp mill, wherein an aqueous pulp mill liquor containing sulphides is diverted into a bioreactor and oxidized by means of sulphur-oxidizing microbes, thereby producing an aqueous suspension from which elemental sulphur can be separated as a precipitate and the residual solution may be directed to causticizing. Optionally, prior to oxidation in the bioreactor, the aqueous pulp mill liquor may be first stripped to obtain a gas stream containing H2S which is then scrubbed with a scrubbing solution to obtain an aqueous spent scrubbing solution containing sulphides, in which case the residual solution can be used to replenish the scrubbing solution.