公开(公告)号：EP4484642A1

公开(公告)日：2025-01-01

申请号：EP24181563.8

申请日：2024-06-12

Applicant: Valmet Technologies Oy

Inventor： PIIPPOLA, Leif ,  HUOVILA, Jari ,  KEINONEN, Niko

IPC: D21D5/26

Abstract: The invention relates to a stock deaeration system (10) comprising a deaeration tank (11) with an inlet (12) and a feed pipe (13) for feeding stock flow into the deaeration tank (11) for removal of air and other gases from the stock. The stock deaeration system (10) further comprises a static mixer (20) or a fluidizator (20) located between the feed pipe (13) and the inlet (12) of the deaeration tank (11).

公开(公告)号：EP4484641A2

公开(公告)日：2025-01-01

申请号：EP24180463.2

申请日：2024-06-06

Applicant: Valmet Technologies Oy

Inventor： HAUTANIEMI, Timo ,  SCHIAVI, Robert ,  YALLURE, Sanjay

IPC: D21B1/32 ,  D21B1/34

Abstract: The invention relates to a horizontal pulper (10) comprising a vat (11) and at least one rotor (15), which has a cylindrical design extending from a first end (12) to a second end (13) and which vat (11) has an open top part (17), a bottom part (18) and side walls (16), which vat (11) comprises an opening (20) on the side wall (16) for the rotor (15). The rotor (15) is mounted to the opening (20) on the side wall (16) by a mounting collar (21) such, that the center line (C) of the rotor (15) is horizontal.

公开(公告)号：EP4441287A1

公开(公告)日：2024-10-09

申请号：EP22814133.9

申请日：2022-11-24

Applicant: Valmet Technologies Oy

Inventor： AHO, Tuomo ,  POUSI, Juha

IPC: D21D1/00 ,  D21D99/00

CPC classification number: D21D99/00 ,  D21D1/00

公开(公告)号：EP4416331A1

公开(公告)日：2024-08-21

申请号：EP22792834.8

申请日：2022-10-07

Applicant: Valmet Technologies Oy

Inventor： SJÖSTRÖM, Håkan ,  VIRTANEN, Jukka

IPC: D21D1/30

CPC classification number: D21D1/306

公开(公告)号：EP4397607A1

公开(公告)日：2024-07-10

申请号：EP23209631.3

申请日：2023-11-14

Applicant: Valmet Technologies Oy

Inventor： HAAPANEN, Jaakko ,  RÄMÄ, Mikko

IPC: B65H19/18 ,  B65H19/20

CPC classification number: B65H2301/4141420130101 ,  B65H2301/414820130101 ,  B65H2301/4601120130101 ,  B65H19/18 ,  B65H19/20

Abstract: The invention relates to a slitter-winder for fiber webs, which comprises an unwinding section (10), a slitting section (20) and a winding section (30). The slitter-winder is configured to unwind, slit and wind a thick fiber web to customer rolls (33). The thick fiber web has basic weight of at least 200 g/m2.The unwinding section (10) of the slitter-winder comprises a first unwinder (11) and a second unwinder (12) for unwinding the thick fiber web of from a parent roll comprising full-width thick fiber web (W11, W12), and a joining device (16, 17) for joining a beginning end of a thick fiber web (W11) coming from a parent roll in the first unwinder to an end of a thick fiber web (W12) coming from a parent roll in the second unwinder by forming a joint (J), and the winding section (30) of the slitter-winder comprises a cutting device (35) for cutting and removing part/-s of the thick fiber web comprising the joint (J) from the winding section (30).

公开(公告)号：EP4375418A1

公开(公告)日：2024-05-29

申请号：EP23208974.8

申请日：2023-11-10

Applicant: Valmet Technologies Oy

Inventor： SIMILÄ, Esko

IPC: D21F5/18 ,  D21F7/00

CPC classification number: D21F5/188 ,  D21F7/00

Abstract: The invention relates to a hoisting accessory (10) for a blower (12) of a pulp dryer (100), which hoisting accessory (10) includes:
- a hoisting element (14) for fastening the hoisting accessory (10) to the blower (12) to be hoisted, and
- first fastening devices (16) for locking the hoisting element (14) to the blower (12) for the duration of hoisting,
- a guideway (18) comprising a first end (20) and second end (22),
- a carriage (24) adapted on the guideway (18) for transferring a blower (12) on the guideway (18) while said hoisting element (14) is suspended from said carriage (24),
- a support device (28) connected to said guideway (18) for suspending the hoisting accessory (10) from a second blower (13) so that said guideway (18) is supported essentially in the horizontal direction by means of the support device (28).
The invention also relates to a method for transferring a blower (12) of a pulp dryer (100) from the pulp dryer (100) by means of the hoisting accessory (10).

公开(公告)号：EP4357519A1

公开(公告)日：2024-04-24

申请号：EP23194484.4

申请日：2023-08-31

Applicant: Valmet Technologies Oy

Inventor： KETTUNEN, Heikki ,  TOIKKANEN, Jukka ,  MÅNSSON, Carl ,  MATTSSON, Kenneth ,  HEIKKINEN, Jukka T. ,  PITKÄNEN, Tatu ,  BERG, Jonas ,  NORDIN, Andreas ,  KULLGREN, Olle ,  BERG, Anna ,  PIIPONNIEMI, Joni ,  CHRISTOFFERSEN, Caroline

IPC: D21F3/10

CPC classification number: D21F3/10

Abstract: The invention relates to a suction roll (30), which comprises a rotatable outer shell (31), which has a plurality of openings (32) arranged spaced apart along the circumference of the outer shell (31), and an inside the rotatable outer shell (31) arranged in axial direction of the suction roll (30) extending stationary suction box (33), which comprises two side walls and a lower wall extending between the side walls, and a setup of seals (34, 35) configured to seal the suction box (33) against inner surface of the rotatable outer shell (31) by the seals (34, 35) of the seal setup, which seals (34, 35) are by lubrication medium lubricated seals and extend in axial direction of the suction roll (30) and are located on the side walls of the suction box (33) at edges of the side walls pointing towards the inner surface of the rotatable outer shell (31) of the suction roll (30). The outer shell (31) of the suction roll (30) is rotatable in both rotation directions (S30) and that the seals (34, 35) are similar and located in the seal setup as mirror images to each other. The invention also relates to a seal setup of a suction roll.

公开(公告)号：EP4344766A1

公开(公告)日：2024-04-03

申请号：EP23200026.5

申请日：2023-09-27

Applicant: Valmet Technologies Oy

Inventor： PAAVOLA, Mikko ,  VUORINEN, Ilari

IPC: B01D53/56

Abstract: The present invention relates to a method for minimising consumption of a reducing agent during removal of nitrogen oxides from a gas flow in a wet scrubber (10). The method comprises leading the gas flow (F) comprising nitrogen dioxide into a first wet scrubbing stage (3), where the gas flow is contacted with a first liquid phase (11) comprising a reducing agent, wherein nitrogen dioxide is reduced into NO 2 - and absorbed into the liquid phase. Then the gas flow, comprising nitrogen dioxide, is removed from the first wet scrubbing stage and led into at least one second wet scrubbing stage (4), where the gas flow is contacted with a second liquid phase (12) comprising a reducing agent, wherein nitrogen dioxide is reduced into NO 2 - and absorbed into the liquid phase. The nitrogen dioxide absorption in the first wet scrubbing stage is at most 65% and in the second wet scrubbing stage at most 65%.

公开(公告)号：EP4343060A2

公开(公告)日：2024-03-27

申请号：EP23198694.4

申请日：2023-09-21

Applicant: Valmet Technologies Oy

Inventor： LECUYER, Stephane ,  OLSZAK, Jonathan

IPC: D21G3/00

Abstract: The invention relates to a stud for a doctor blade holder in a fiber web machine. The stud (15) has a body (16) with a flange (17). The body (16) is a single piece having a form for a standard tool. The invention also relates a doctor blade holder assembly for a fiber web machine.

公开(公告)号：EP4265841A1

公开(公告)日：2023-10-25

申请号：EP22168768.4

申请日：2022-04-19

Applicant: Valmet Technologies Oy

Inventor： TRÄFF, Henrik ,  VAINIO, Kevin

IPC: D21J3/00 ,  D21J7/00

Abstract: The invention relates to a mold for manufacturing of a molded fiber product. The mold (11) includes a porous product surface (23) made by additive manufacturing. The product surface (23) is arranged as a double deck structure (40) including two layers (41, 42). Between the layers (41, 42) there is a cavity (43) wherein the first layer (41) has porousness from the cavity (43) to the product surface (23). The second layer (42) has perforations isolated from the cavity (43) and extending from the product surface (23) through the double deck structure (40).