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1.发明授权Device for dewatering of a paper web including prepressing with extended nip shoe 失效纸幅脱水装置，包括使用延长的压印辊预压
公开(公告)号：US5611893A
公开(公告)日：1997-03-18
申请号：US377173
申请日：1995-01-24
申请人： Juhani Pajula , Martti Hipsimaki , Juha Kivimaa , Pekka Taskinen , Jorma Laapotti , Mikko Karvinen
发明人： Juhani Pajula , Martti Hipsimaki , Juha Kivimaa , Pekka Taskinen , Jorma Laapotti , Mikko Karvinen
CPC分类号： D21F3/0218 , D21F3/04 , D21F3/045
摘要： Method and device in the manufacture of paper or board for dewatering of a paper web that is being manufactured. The paper web is transferred from a forming wire onto a wire in the drying section while constantly on support of a fabric that receives water, a transfer fabric, or of any other, corresponding transfer surface as a closed draw, at a particularly high speed, which is higher than about 25-30 m/s. Dewatering of the paper web is carried out by means of at least two subsequent press nips, of which nips at least one press nip is a so-called extended-nip zone, whose length in a machine direction is larger than about 100 mm. The extended-nip zone is formed in connection with a mobile flexible press-band loop. The distribution of the compression pressure employed within said extended-nip press zone is regulated and/or selected both in the transverse direction of the web and in the machine direction so as to set or to control the different profiles of properties of the web.
摘要翻译： 制造纸张或纸板的方法和装置，用于正在制造的纸幅的脱水。 纸幅从成形线转移到干燥部分中的线上，同时以特别高的速度恒定地支撑接收水，转印织物或任何其它相应的转印表面作为封闭绘制的织物， 高于约25-30米/秒。 纸幅的脱水通过至少两个随后的压榨辊进行，其中至少一个压榨辊隙是所谓的延伸压区，其长度在机器方向上大于约100mm。 延伸压区是与移动的柔性压带环结合形成的。 在所述延伸压区压区中采用的压缩压力的分布在幅材的横向方向和机器方向上被调节和/或选择，以便设定或控制幅材的不同特性。
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2.发明授权Method for dewatering of a paper web by pressing using an extended nip shoe pre-press zone on the forming wire 失效通过在成形线上使用延长的压板预压区进行压制来对纸幅进行脱水的方法
公开(公告)号：US5389205A
公开(公告)日：1995-02-14
申请号：US26851
申请日：1993-03-05
申请人： Juhani Pajula , Juha Kivimaa , Jorma Lapotti , Martti Hirsimaki , Pekka Taskinen , Mikko Karvinen
发明人： Juhani Pajula , Juha Kivimaa , Jorma Lapotti , Martti Hirsimaki , Pekka Taskinen , Mikko Karvinen
CPC分类号： D21F3/0218 , D21F3/04 , D21F3/045
摘要： Method and device in the manufacture of paper or board for dewatering of a paper web that is being manufactured. The paper web is transferred from a forming wire onto a wire in the drying section while constantly on support of a fabric that receives water, a transfer fabric, or of any other, corresponding transfer surface as a closed draw, at a particularly high speed, which is higher than about 25-30 m/s. Dewatering of the paper web is carried out by means of at least two subsequent press nips, of which nips at least one press nip is a so-called extended-nip zone, whose length in a machine direction is larger than about 100 mm. The extended-nip zone is formed in connection with a mobile flexible press-band loop. The distribution of the compression pressure employed within said extended-nip press zone is regulated and/or selected both in the transverse direction of the web and in the machine direction so as to set or to control the different profiles of properties of the web.
摘要翻译： 制造纸张或纸板的方法和装置，用于正在制造的纸幅的脱水。 纸幅从成形线转移到干燥部分中的线上，同时以特别高的速度恒定地支撑接收水，转印织物或任何其它相应的转印表面作为封闭绘制的织物， 高于约25-30m / s。 纸幅的脱水通过至少两个随后的压榨辊进行，其中至少一个压榨辊隙是所谓的延伸压区，其长度在机器方向上大于约100mm。 延伸压区是与移动的柔性压带环结合形成的。 在所述延伸压区压区中采用的压缩压力的分布在幅材的横向方向和机器方向上被调节和/或选择，以便设定或控制幅材的不同特性。
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公开(公告)号：US5650049A
公开(公告)日：1997-07-22
申请号：US491621
申请日：1995-06-19
申请人： Juha Kivimaa , Juhani Pajula
发明人： Juha Kivimaa , Juhani Pajula
摘要： A press section for a paper machine employing at least two press nips placed one after the other. Of these nips, at least the first nip is an extended nip or an extended roll nip. The last nip in the press section is placed on a level higher than the preceding nip. The first nip and/or, when more than two nips are employed, the nip that immediately precedes the last nip is/are provided with two press fabrics that receive water. The paper web is transferred on the lower fabric of the two press fabrics onto an upper fabric of the last nip. On the lower face of the upper fabric, the web is transferred into the last nip. After the web transfer point, the upper fabric of the last nip has a relatively short upwardly inclined run. After this, the upper fabric is turned and guided by the lower roll of the last nip over a considerable sector thereof. The last nip is placed after, or at the vicinity of, the uppermost point of the lower roll that forms the last nip. The point of transfer of the web onto the drying wire of the first group in the dryer section following after the press section is placed underneath the level of the last nip.
摘要翻译： 用于采用至少两个压榨辊的造纸机的压榨部分一个接一个地放置。 在这些压区中，至少第一压区是延长的压区或延伸辊压区。 压榨部中的最后一个压区放置在高于先前压区的水平面上。 当使用两个以上的压区时，第一压区和/或当最后压区之前的辊隙被提供有两个接收水的压榨织物。 纸幅在两个压榨织物的下部织物上转移到最后压区的上部织物上。 在上织物的下表面上，幅材被转移到最后的压区中。 在纸幅转印点之后，最后压区的上部织物具有相对较短的向上倾斜的行程。 之后，上部织物在其相当大的部分上由最后辊隙的下辊转动和引导。 最后的辊隙位于形成最后辊隙的下辊的最上部位置之后或附近。 将压榨部之后的干燥部中的第一组的干燥丝线的转移点放置在最后压区的水平面的下方。
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公开(公告)号：US5762761A
公开(公告)日：1998-06-09
申请号：US763016
申请日：1996-12-11
申请人： Juha Kivimaa , Juhani Pajula
发明人： Juha Kivimaa , Juhani Pajula
摘要： A press section for a paper machine employing at least two press nips placed one after the other. Of these nips, at least the first nip is an extended nip or an extended roll nip. The last nip in the press section is placed on a level higher than the preceding nip. The first nip and/or, when more than two nips are employed, the nip that immediately precedes the last nip is/are provided with two press fabrics that receive water. The paper web is transferred on the lower fabric of the two press fabrics onto an upper fabric of the last nip. On the lower face of the upper fabric, the web is transferred into the last nip. After the web transfer point, the upper fabric of the last nip has a relatively short upwardly inclined run. After this, the upper fabric is turned and guided by the lower roll of the last nip over a considerable sector thereof. The last nip is placed after, or at the vicinity of, the uppermost point of the lower roll that forms the last nip. The point of transfer of the web onto the drying wire of the first group in the dryer section following after the press section is placed underneath the level of the last nip.
摘要翻译： 用于采用至少两个压榨辊的造纸机的压榨部分一个接一个地放置。 在这些压区中，至少第一压区是延长的压区或延伸辊压区。 压榨部中的最后一个压区放置在高于先前压区的水平面上。 当使用两个以上的压区时，第一压区和/或当最后压区之前的辊隙被提供有两个接收水的压榨织物。 纸幅在两个压榨织物的下部织物上转移到最后压区的上部织物上。 在上织物的下表面上，幅材被转移到最后的压区中。 在纸幅转印点之后，最后压区的上部织物具有相对较短的向上倾斜的行程。 之后，上部织物在其相当大的部分上由最后辊隙的下辊转动和引导。 最后的辊隙位于形成最后辊隙的下辊的最上部位置之后或附近。 将压榨部之后的干燥部中的第一组的干燥丝线的转移点放置在最后压区的水平面的下方。
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公开(公告)号：US5989393A
公开(公告)日：1999-11-23
申请号：US27060
申请日：1993-03-05
申请人： Juha Kivimaa , Martti Hirsimaki
发明人： Juha Kivimaa , Martti Hirsimaki
CPC分类号： D21G9/0063 , D21F3/04
摘要： The invention relates to a device and method in a paper machine for guiding a web and in particular in guiding a leader of the web. The device operates in a paper machine in the area between a center roll of the press section and a separate press nip in the press section. The separate press nip is formed between a smooth-faced upper roll and a hollow-faced lower roll. Around this lower roll, a lower felt of the separate press is placed and runs from a suction-transfer roll placed at the proximity of the center roll as a straight run into the separate press nip. At the initial end of the straight run of the felt of the separate press nip, in connection with the guide roll, air-transfer devices are arranged, by whose means a reduced pressure is produced at least across the width of the leader in connection with a closing inlet nip between the felt and the leader and/or in connection with an opening outlet nip defined between the guide roll and the straight run of the felt.
摘要翻译： 本发明涉及一种造纸机中的装置和方法，用于引导幅材，特别是引导幅材的引导件。 该设备在造纸机中在压榨部的中心辊和压榨部中的单独的压榨区域之间的区域中操作。 单独的压榨辊隙形成在平滑的上辊和中空的下辊之间。 在该下辊周围，分开的压榨机的下毛毯被放置并且从设置在中心辊附近的吸力转移辊直线运行到分开的压榨压区中。 在分开的压榨压区的毛毯的直线运行的初始阶段，与引导辊相关联地，布置空气传送装置，通过它们的方式，至少跨越引导件的宽度产生减压，结合 毡和引导件之间的闭合入口压合部和/或与引导辊和毛毡的直线段之间限定的开口出口压头相连接。
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公开(公告)号：US5666740A
公开(公告)日：1997-09-16
申请号：US638442
申请日：1996-04-26
申请人： Antti Leinonen , Henrik Pettersson , Risto Salminen , Hannu Niemikko , Juha Kivimaa , Pertti Heikkila , Tapio Lento , Erkki Kiilavuori
发明人： Antti Leinonen , Henrik Pettersson , Risto Salminen , Hannu Niemikko , Juha Kivimaa , Pertti Heikkila , Tapio Lento , Erkki Kiilavuori
摘要： A hood for a wire part and/or a press section in a paper/board machine including walls and a ceiling which form a closed hood around the wire part and/or press section, air-conditioning or another air-control system being arranged in connection with the hood. The hood walls have outer and inner walls which define an air duct therebetween for passing a replacement air flow into the interior of the hood, preferably toward a middle area of the paper machine, through openings in the inner wall, the replacement air keeping the interior of the hood substantially dry and clean. The walls of the hood include a vertical side wall at the driving side, which wall is preferably fixed, and a tending-side vertical side wall and a ceiling formed as a single wall which is preferably L-shaped and displaceable. The displaceable hood wall at the tending side has two parts so that the first hood wall is placed by the wire section and the second hood wall is placed by the press section.
摘要翻译： 包括墙壁和天花板的纸/纸机器中的线部分和/或压榨部分的罩，其围绕线部分和/或按压部分形成封闭的罩，空调或另一空气控制系统布置在 与罩的连接。 发动机罩壁具有外壁和内壁，其在其间限定一个空气管道，用于将更换的气流通过内壁的开口，使更换空气流进入罩的内部，优选地朝向造纸机的中间区域，保持内部的更换空气 的罩子基本上干燥干净。 罩的壁包括在驱动侧的垂直侧壁，该壁优选是固定的，并且倾斜侧垂直侧壁和形成为单个壁的天花板，其优选为L形且可移位。 倾斜侧的可移动的罩壁具有两部分，使得第一罩壁由线部分放置，第二罩壁由压榨部放置。
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公开(公告)号：US5503716A
公开(公告)日：1996-04-02
申请号：US347729
申请日：1994-12-01
申请人： Juha Kivimaa , Martti Hirsimaki
发明人： Juha Kivimaa , Martti Hirsimaki
CPC分类号： D21G9/0063 , D21F3/04
摘要： The invention relates to a device in a paper machine for guiding a web and in particular in guiding a leader of the web. The device operates in a paper machine in the area between a center roll of the press section and a separate press nip in the press section. The separate press nip is formed between a smooth-faced upper roll and a hollow-faced lower roll. Around this lower roll, a lower felt of the separate press is placed and runs from a suction-transfer roll placed at the proximity of the center roll as a straight run into the separate press nip. At the initial end of the straight run of the felt of the separate press nip, in connection with the guide roll, air-transfer devices are arranged, by whose means a reduced pressure is produced at least across the width of the leader in connection with a closing inlet nip between the felt and the leader and/or in connection with an opening outlet nip defined between the guide roll and the straight run of the felt.
摘要翻译： 本发明涉及一种用于引导网，特别是引导网的领导者的造纸机中的装置。 该设备在造纸机中在压榨部的中心辊和压榨部中的单独的压榨区域之间的区域中操作。 单独的压榨辊隙形成在平滑的上辊和中空的下辊之间。 在该下辊周围，分开的压榨机的下毛毯被放置并且从设置在中心辊附近的吸力转移辊直线运行到分开的压榨压区中。 在分开的压榨压区的毛毯的直线运行的初始阶段，与引导辊相关联地，布置空气传送装置，通过它们的方式，至少跨越引导件的宽度产生减压，结合 毡和引导件之间的闭合入口压合部和/或与引导辊和毛毡的直线段之间限定的开口出口压头相连接。
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公开(公告)号：US5178731A
公开(公告)日：1993-01-12
申请号：US707462
申请日：1991-05-30
申请人： Juha Kivimaa , Lauri Suvanto
发明人： Juha Kivimaa , Lauri Suvanto
摘要： The invention concerns a method and a device for removing water out of the perforations in a suction roll wherein a doctor blade is brought into contact with the face of the suction roll. The doctor blade is mounted with its slat face in such an angular position in relation to the face of the suction roll that the angle between the face plane of the doctor blade and the tangential direction of the face of the suction roll, when the tangent is drawn at the contact point between the tip of the doctor blade and the face of the suction roll, is from about 2.degree. to about 10.degree.. In the method, water is removed by means of the inlet-side surface plane of the doctor blade, the inlet side being seen in the sense of rotation of the suction roll, and the water is allowed to flow smoothly over the doctor blade out of contact with the construction. According to the invention, water may be additionally removed by means of a suction effect out of the area between the slat face of the doctor blade and the suction roll, negative pressure being produced in the space. The negative pressure produces flow of water out of the perforations or grooves in the suction roll.
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