Patents Assigned to VALMET TECHNOLOGIES OY
  • Publication number: 20210381165
    Abstract: An industrial textile (6) for manufacturing a fibrous web has first machine direction yarns (1) on the front side (7) which bind to first cross-machine direction yarns (4) in a first pattern, while second machine direction yarns (2) on the back side bind to second cross-machine direction yarns (5) in a second pattern. Third machine direction yarns (3) bind to the first cross-machine direction yarns (4) and the second cross-machine direction yarns (5) in a third pattern. The third pattern has at least one interlacing point (71) on the front side where one of the third machine direction yarns (3) passes over one of the first cross-machine direction yarns (4) and at least one interlacing point (72) on the back side (8) where the same third machine direction yarn (3) passes under one of the second cross-machine direction yarns (5).
    Type: Application
    Filed: June 3, 2021
    Publication date: December 9, 2021
    Applicant: Valmet Technologies Oy
    Inventors: Hannu Martikainen, Tania Rautio, Mari Seppänen, Seppo Taipale
  • Publication number: 20210363698
    Abstract: A belt (10) for a sleeve roll forms a closed loop and has an inner surface (11), an outer surface (12), an elastic body (15), and a reinforcing structure (30). The reinforcing structure has first yarns (31a) arranged to a first direction (D1) of the belt, and second yarns (32a) arranged to a second direction (D2) of the belt which is parallel or substantially parallel to a travel direction of the belt, and/or perpendicular or substantially perpendicular to the first direction (D1). The belt (10) is configured to stretch elastically more in the second direction (D2) than in the first direction (D1) so that it will return to its original length after forces stretching the belt have been removed. This invention further relates to an arrangement including a belt and a sleeve roll. This invention further relates to a use of a belt.
    Type: Application
    Filed: May 19, 2021
    Publication date: November 25, 2021
    Applicant: Valmet Technologies Oy
    Inventors: Satu Hagfors, Vesa-Matti Riihioja
  • Publication number: 20210363697
    Abstract: A belt (10) for a sleeve roll forms a closed loop and has an inner surface (11) and an outer surface (12). The belt has an elastic body (15) with an outer surface (15a) and a reinforcing structure (30). The reinforcing structure has first yarns (31a) arranged to a first direction (D1), and second yarns (32a) arranged to a second direction (D2). The second yarns (32a) are arranged, at least partially, on the elastic body (15), and/or the second yarns (32a) are arranged to a depth of equal to or less than 2 mm, measured from the outer surface (15a) of the elastic body to a bottom (32a-i) of the second yarn (32a) in a depth direction of the belt. The invention further relates to a use of a belt. The invention further relates to an arrangement comprising a belt and a sleeve roll.
    Type: Application
    Filed: May 19, 2021
    Publication date: November 25, 2021
    Applicant: Valmet Technologies Oy
    Inventors: Satu Hagfors, Vesa-Matti Rilhioja
  • Publication number: 20210362084
    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.
    Type: Application
    Filed: May 18, 2021
    Publication date: November 25, 2021
    Applicant: Valmet Technologies Oy
    Inventors: Marilene Amaral Leite Manoel, Rafael de Felipe Zica, Siterzany Fonseca, Wallace Farias Bacelar, Thiago Pavan
  • Patent number: 11174593
    Abstract: The invention relates to a base fabric of a press felt. The base fabric comprises end regions which are provided with seam loops (4). The seam loops are slanted. Further, the invention relates to a press felt and a method of forming the same.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: November 16, 2021
    Assignee: VALMET TECHNOLOGIES OY
    Inventors: Kati Mikkonen, Jorma Naamanka
  • Publication number: 20210340707
    Abstract: A shoe press belt (10) for a shoe press has an inner surface (11), an outer surface (12), an elastomer body and a support structure (20, 21, 22, 23) for the elastomer body. A plurality of parallel dewatering grooves (50, 50a, 50b) are on the outer surface (12) of the shoe press belt (10), with a ridges (53) provided between two adjacent dewatering grooves (50a, 50b). The dewatering grooves (50, 50a, 50b) have a first wall (60), a second wall (70), and a bottom (80) therebetween. At least the first wall (60) of the dewatering groove (50, 50a, 50b) has a plurality of parallel auxiliary grooves (100, 100a, 100b). A paper, board or pulp drying machine has said shoe press belt (10). A method for installing the shoe press belt (10) is provided.
    Type: Application
    Filed: December 17, 2019
    Publication date: November 4, 2021
    Applicant: Valmet Technologies Oy
    Inventors: Jari Jännetyinen, Vesa-Matti Riihioja
  • Patent number: 11162675
    Abstract: A supporting beam arrangement (14) for supporting a flue gas duct (10) to a support frame (16) of the flue gas duct. The supporting beam arrangement comprises two horizontal first supporting beams (18) that are parallel and on two opposite sides of the flue gas duct (10) and separated by a distance from the flue gas duct, and further are connected to the support frame (16). The supporting beam arrangement (14) comprises a horizontal second supporting beam (20) defining two opposite ends (22) that are supported to the first supporting beams (18), the second supporting beam extending through the flue gas duct (10) that is supported to the second supporting beam. At least one or each one of the first supporting beams comprises an opening (24), in which opening one of the two opposite ends (22) of the second supporting beam is placed to rest on the first supporting beam (18). A power boiler (50) comprises the supporting beam arrangement (14), the flue gas duct (10) and the support frame (16).
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: November 2, 2021
    Assignee: Valmet Technologies Oy
    Inventors: Tero Heino, Juha Ojanperä
  • Patent number: 11142422
    Abstract: A method of operating an off-line finishing device for fiber webs, in particular an off-line slitter-winder for winding fiber webs, wherein in operating the off-line device the running speed is automatically optimized to minimize cost of web breaks. The method considers the costs associated with a web break during unwinding in addition to the cost benefit of maximizing web unwind speed so as to maximize machine utilization. The method determines an optimal web break stopping time in a web break situation and how often a web break is predicted. Automatic optimization incorporates limitations including the maximum rotation speed of the parent roll, the maximum speed of the fiber web being unwound, the maximum positive torque which can be applied to the parent roll to accelerate the parent roll to a rotation rate which produces a desired web speed, and maximum braking torque.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: October 12, 2021
    Assignee: VALMET TECHNOLOGIES OY
    Inventor: Jari Paanasalo
  • Patent number: 11141735
    Abstract: A refiner plate segment including a plurality of bars and grooves for refining lignocellulosic materials, where the grooves between adjacent bars includes a plurality of teeth having a wave-like profile with alternating high and low points. The wave-like profile of the teeth within the grooves increases turbulence in the refining process to tumble the fibers and push them toward the refining gap to reduce energy and improve the efficiency of the fiber reduction process.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: October 12, 2021
    Assignee: Valmet Technologies Oy
    Inventor: Ryan A. Knight
  • Publication number: 20210301470
    Abstract: A method and an arrangement (1) for producing nanofibrillar cellulose, wherein lignocellulose-containing fibre material is refined to separate nanofibrils. The method comprises refining the lignocellulose-containing fibre material in at least one refining zone (20) in one or more refiners (5) to separate nanofibrils, supplying the fibre material to be refined into the at least one refining zone of at least one refiner through at least one opening (12, 19) in the refining surface (11, 18) of at least one refining element (7, 13) and/or discharging the fibre material already refined in the at least one refining zone of at least one refiner out of the at least one refining zone through at least one opening (12, 19) in the refining surface (11, 18) of at least one refining element (7, 13), and operating the said at least one refiner to produce a specific edge load (SEL) of less than three J/m in the refining.
    Type: Application
    Filed: March 21, 2021
    Publication date: September 30, 2021
    Applicant: Valmet Technologies Oy
    Inventors: Juha-Pekka HUHTANEN, Pekka SAUKKO
  • Patent number: 11053639
    Abstract: A hub and a member, the member having a central opening. The hub is received in the member central opening. The hub has a center, and a hub axis through the center. The hub also has a splined exterior with a plurality of splines, each spline having a spline surface, and the member central opening has internal splines that engage with the hub splined exterior. At least one of the hub splines has a wear indicator, the wear indicator comprising a surface mark that extends along a portion of the spline surface in the same direction as the hub axis.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: July 6, 2021
    Assignee: VALMET TECHNOLOGIES OY
    Inventor: Robert Short
  • Patent number: 11040847
    Abstract: A core chuck system (10) comprising a core chuck (11) and a spindle (12) onto which the core chuck (11) is lockable, which core chuck system (10) comprises a ball locking mechanism, a locking button (15) and a cone connection (C).
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: June 22, 2021
    Assignee: Valmet Technologies Oy
    Inventor: Tommi Vuoristo
  • Patent number: 11008911
    Abstract: A scrubber for exhaust gas cleaning onboard a marine vessel, comprising a scrubber shell (12) forming a scrubber chamber; and a tubular pipe (18) running through the scrubber shell for feeding scrubber liquid into the scrubber chamber; a concave bowl (32) for connecting the tubular pipe to the scrubber shell, the concave bowl having the shape of a solid of revolution, and the shape curving smoothly from the rim (46) of the concave bowl to the bottom (48) of the concave bowl. The tubular pipe runs through the bottom of the concave bowl in such a way that the bottom encircles the tubular pipe, and the tubular pipe and the bottom are connected to each other. The concave bowl is placed in an opening (34) in the scrubber shell in such a way that the scrubber shell encircles the rim of the concave bowl, and the scrubber shell and the rim are connected to each other.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: May 18, 2021
    Assignee: Valmet Technologies Oy
    Inventors: Kalle Hannula, Heikki Airikkala, Jere Fabritius, Juha Ojanperä, Kari Mäkelä
  • Patent number: 11008190
    Abstract: A method for monitoring a machine element in a paper finishing machine (10). The machine element mounted for rotation machine elements (16-19) equipped with a sensor assembly (24) measuring force or pressure, and a counter-pair (15, 20, 33, 44) for said machine element. The machine element is made to rotate against the counter-pair, a measurement signal (25) is generated between the machine element and the counter-pair with the sensor assembly, and recording a reference cross-directional profile (21) of force or pressure generated. Condition monitoring (38) of vibration with the reference profile is by comparison of current signals with the reference so as to detect periodic variation (39.1, 39.2) in the cross-directional pressure profile, and producing visual information (37) from the analysis for monitoring. The invention also relates to a corresponding system, a rotating machine element for the method or the system, and a computer program product.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: May 18, 2021
    Assignee: VALMET TECHNOLOGIES OY
    Inventors: Tatu Pitkänen, Heikki Kettunen, Todd Vandenheuvel
  • Patent number: 10982356
    Abstract: An industrial textile (1) having a longitudinal direction (MD) and a cross direction (CMD) and a first surface and a second surface, the industrial textile (1) extending in the cross direction from a first edge (E1) to a second edge (E2). The industrial textile (1) has a double warp which comprises a first warp having first machine direction yarns (U1, U2) and a second warp having second machine direction yarns (LI, L2). The yarns (U1, U2) of the first warp are arranged above the yarns (LI, L2) of the second warp and the yarns of the first warp are at least partially offset in respect of the yarns of the second warp. The industrial textile has a weft having cross machine direction yarns (W1, W2, W3, W4).
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: April 20, 2021
    Assignee: VALMET TECHNOLOGIES OY
    Inventors: Rauno Enqvist, Juha Paavolainen
  • Publication number: 20210108367
    Abstract: A refiner for refining lignocellulose containing fiber material has two substantially oppositely positioned refining elements (6, 6a, 6b, 9) with refining surfaces (8, 8a, 8b, 11, 11a, 11b) with blade bars (25, 27) and grooves (26, 28). Opposed refining surfaces face each other forming a refining chamber (15, 15a, 15b) which receives fiber material to be refined. The refiner has two feed channels (19a, 19b) for feeding into the refiner at least one fiber material fraction (FM1, FM2) to be refined, and two refining zones (21a, 21b) with at least one different refining surface characteristic between the refining zones (21a, 21b). Each refining zone (21a, 21b) is intended to refine one fiber material fraction (FM1, FM2) of the at least one fiber material fraction (FM1, FM2). There is at least one discharge channel (23, 23a, 23b) for discharging out of the refiner at least one flow of refined material.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 15, 2021
    Applicant: Valmet Technologies Oy
    Inventor: Ramon Muñoz
  • Publication number: 20210102339
    Abstract: A dryer fabric has a weft of cross machine direction yarns (6) and a first warp of first machine direction yarns (5) and a second warp of second machine direction yarns (9). The yarns of the first warp are arranged above the yarns of the second warp on a first surface (FS) side. The first warp has primary yarns (51) of PPS or PK yarns whose breaking load remains substantially stable within 15 days in conditions where RH=100%, T=125° C. and p=2.3 bar; and secondary yarns (52) of PET with breaking loads which substantially decrease under the same conditions. At least every second yarn of the first warp is a secondary yarn (52). The secondary yarns (52) may be two out of three or three out of four of the first machine direction yarns (5). PET reduces cost and adds elasticity to the dryer fabric.
    Type: Application
    Filed: October 2, 2020
    Publication date: April 8, 2021
    Applicant: Valmet Technologies Oy
    Inventor: Rauno Enqvist
  • Publication number: 20210062422
    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.
    Type: Application
    Filed: August 27, 2020
    Publication date: March 4, 2021
    Applicant: Valmet Technologies Oy
    Inventors: Juha-Pekka Huhtanen, Marko Loijas
  • Patent number: 10920622
    Abstract: Disclosed is a system for producing electricity, the system comprising a chemical recovery boiler adapted to supply superheated steam to a steam turbine driving a generator, the chemical recovery boiler comprising a first flue discharge channel with a first heat exchanger arrangement; and a lime kiln comprising a second flue discharge channel with a second heat exchanger arrangement; and a circulation for heat transfer medium between the said heat exchanger arrangements. Also disclosed is a method for producing electricity, wherein said heat transfer medium is circulated between said heat exchanger arrangements such that thermal energy may be transferred from the flue gases in the first flue charge channel and/or the second flue discharge channel into the feed water of the chemical recovery boiler and/or into a heat-consuming process.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: February 16, 2021
    Assignee: Valmet Technologies Oy
    Inventor: Jarmo Mansikkasalo
  • Patent number: 10890323
    Abstract: A circulating fluidized bed boiler is described, comprising a furnace, a loopseal, and a loopseal heat exchanger arranged in the loopseal. The loopseal heat exchanger comprises walls limiting an interior of the loopseal heat exchanger, a first particle outlet for letting out particulate material from the loopseal heat exchanger, an inlet for receiving bed material, heat exchanger tubes arranged in the interior of the loopseal heat exchanger, and a first ash removal channel configured to let out ash from the loopseal heat exchanger. An ash cooler is configured to receive ash from the first ash removal channel. In the loopseal heat exchanger the first ash removal channel is arranged at a lower level than the first particle outlet.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: January 12, 2021
    Assignee: Valmet Technologies Oy
    Inventor: Pekka Lehtonen