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公开(公告)号：EP3990696A1
公开(公告)日：2022-05-04
申请号：EP20833511.7
申请日：2020-06-11
申请人： Valmet Aktiebolag
发明人： BJERKE, Michael
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公开(公告)号：EP3477003A1
公开(公告)日：2019-05-01
申请号：EP17199425.4
申请日：2017-10-31
申请人： Valmet Aktiebolag
摘要： The invention relates to a method of manufacturing a Yankee drying cylinder 1 for drying wet fibrous webs W by heat. The manufacturing method comprising the steps of: providing a shell 2 which is a circular cylindrical steel shell 2 with two axial ends 3, 4 and the shell 2 having a diameter in the range of 2 m - 8 m. Circumferential grooves 6 are formed on an internal surface 5 of the shell during some part of the manufacturing process. An end cover 7, 8 of steel is provided for each axial end 3, 4 of the shell 2 and each end cover 7, 8 has a circular circumference. The method comprises welding each end cover 7, 8 to an axial end of 3, 4 the shell 2. According to the invention, each end cover 7, 8 is welded to its respective axial end 3, 4 of the shell 2 at 16 - 32 separate welding points 12a, 12b, 12c, 12d.....12x that are made in a sequence, one after the other, and separated from each other along the circumference of the end cover 7, 8. For at least the first 8 welding points 12a, 12b, 12c, 12d.....12x, the welding points 12a, 12b, 12c, 12d.....12x are made in pairs of two in which the second welding point 12a, 12b, 12c, 12d.....12x in a pair is made directly after the first welding point 12a, 12b, 12c, 12d.....12x of that pair and the second welding point 12a, 12b, 12c, 12d.....12x in each pair is placed at an angular distance along the circumference of the end cover 7, 8 which lies in the range of 175°- 185° from the first welding point of that pair.
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公开(公告)号：EP3160653B1
公开(公告)日：2019-03-27
申请号：EP15811976.8
申请日：2015-06-24
申请人： Valmet Aktiebolag
发明人： THYR, Anders , AHLGREN, Örjan , SJÖBLOM, Krister
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公开(公告)号：EP3452394A1
公开(公告)日：2019-03-13
申请号：EP17707317.8
申请日：2017-02-27
申请人： Valmet Aktiebolag
摘要： The invention relates to an apparatus for winding a paper web. It comprises a rotatably mounted reel spool (3) onto which paper can be wound and an endless flexible belt (5) which is permeable to air and supported by support rolls (12). The flexible belt is positioned adjacent the reel spool (3) to engage the web against the reel spool during winding such that the endless flexible belt is deflected from the path of travel. The flexible belt has a web-contacting side (6). An actuator (9) is arranged to position the reel spool (3) and the flexible belt relative to each other to vary the amount of deflection. The apparatus further comprises a cleaning device (11) with at least one nozzle for blowing air against the web-contacting side of the flexible belt at a point where the flexible belt is not in contact with the paper. The invention also relates to a method of removing dust particles.
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6.发明授权
公开(公告)号：EP2132378B1
公开(公告)日：2018-10-10
申请号：EP08724244.2
申请日：2008-03-17
申请人： Valmet Aktiebolag
CPC分类号： F23C5/06 , D21C11/02 , F23D11/36 , F23G7/04 , F23G2900/54402
摘要： The arrangement is for positioning equipment in association with an opening in a boiler wall and has a rotation mechanism that rotates the equipment around a virtual rotation axis that lies within the outer wall of the boiler. During the use of a liquor spreader for the introduction of combustible material, the opening of the liquor spreader is arranged in the virtual center of rotation so that the point at which the combustible material is introduced is retained independently of the angle of rotation. The liquor spreader is united either with a glide device or the guide in the rotation mechanism.
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公开(公告)号：EP3084071B1
公开(公告)日：2018-08-08
申请号：EP14871933.9
申请日：2014-12-15
申请人： Valmet Aktiebolag
发明人： MELLANDER, Stefan , SVEDBERG, Peter
IPC分类号： D21C9/06 , B01D33/073 , D21C9/18
摘要： A dewatering roll (10) comprises a roll body (20), a mantle support structure (30) and a mantle (40). The mantle support structure (30) is attached around the roll body (20). The mantle (40) is attached against an outer surface (36) of the mantle support structure (30). The mantle (40) has a plurality of through holes (42) constituting mantle flow paths (44). The mantle support structure (30) presents support flow paths (38) from the outer surface (36) of the mantle support structure (30). The support flow paths (38) are in fluid contact with the mantle flow paths (44). The outer surface (36) of the mantle support structure (30) has a static geometric shape defining an envelope having a smaller radius in vicinity of each axial end (15) than in vicinity of a centre (16). Thereby, the inner surface (48) of the mantle (44) assumes the shape of the envelope.
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8.发明公开
公开(公告)号：EP3332955A1
公开(公告)日：2018-06-13
申请号：EP17192581.1
申请日：2017-09-22
申请人： Valmet Aktiebolag
发明人： ADAMSSON, Karl
CPC分类号： B05B13/041 , B05B1/04 , B05B1/20 , B05B1/30 , B05B13/0278 , B31F1/14 , D21H23/50
摘要： A device for spraying a coating chemical onto a moving surface ( 1 ) of a papermaking machine includes a machine-wide box body ( 2 ) extending in a cross machine direction and defines an internal space configured to enclose part of a spraying equipment ( 3 ) and also defines an elongate opening ( 22 ) facing said moving surface ( 1 ). The spraying equipment ( 3 ) includes a plurality of spray nozzle members ( 30 ) for spraying coating chemical through said opening ( 22 ) onto the moving surface ( 1 ), a coating chemical supplying tube ( 32 ) is connected to the nozzle members ( 30 ), and a plurality of valves ( 33 ) are mounted on the coating chemical supplying tube ( 32 ), one for each nozzle member ( 30 ). To make it possible to change a nozzle member ( 30 ) without requiring that the coating chemical supplying tube ( 32 ) has to be pulled out of the box body ( 2 ), and where the nozzle change can be carried out with less risk for the operator to any danger, the coating chemical supplying tube ( 32 ) with said valves ( 33 ) is located outside of the box body ( 2 ), and the nozzle members ( 30 ) extend through a wall portion ( 36 ) of the box body ( 2 ) and are mounted to be individually movable axially to permit removal of anyone of them independently of the other ones.
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9.发明授权
公开(公告)号：EP2785817B1
公开(公告)日：2018-05-16
申请号：EP11876468.7
申请日：2011-11-29
申请人： Valmet Aktiebolag
发明人： BJÖRKLUND, Peter
摘要： The improved method and arrangement are for cooling torrefied lignocellulosic material. By adding water in controlled amounts to the torrefied material in a grinder at exit from a roaster the entire volume of torrefied material could be cooled down to a temperature well below the critical temperature without increasing the water content of the final product.
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10.发明授权
公开(公告)号：EP2061930B1
公开(公告)日：2018-05-02
申请号：EP06769607.0
申请日：2006-08-10
申请人： Valmet Aktiebolag
发明人： VIDEGREN, Leif
CPC分类号： D21F1/66 , D21F9/003 , Y10T29/49826
摘要： The invention discloses a pre-assembled self-supporting unit (1) for a twine wire forming section. The unit comprises an integrated save-all tray (25) and other integrated elements such as cross walkway (17), piping beam (10), connecting arms (8). The rolls (2) for supporting at least one forming clothing loop (4) and the other elements are mounted onto this separate unit instead of being mounted onto the same machine frame. The unit provides a diminished foot print for the forming section, and it is dimensioned to fit in a standard transport container.
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