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公开(公告)号：US06926806B2
公开(公告)日：2005-08-09
申请号：US10204617
申请日：2001-02-01
申请人： Petter Honkalampi , Petteri Halme , Juhani Pajula
发明人： Petter Honkalampi , Petteri Halme , Juhani Pajula
摘要： A web (W) passes through a press section having two separate press nips (N1, N2). At least the first press nip (N1) has two water-receiving press felts (31, 41). After the first nip (N1), the web (W) is separated from one press felt (31/41) and transferred on support of the opposite press felt (41/31) through the second press nip (N2). One roll of the first nip (N1) is a press suction roll (11, 110) and the web (W) is transferred to follow the press felt (31, 41) on the side of said press suction roll (11, 110) by means of an underpressure in a suction zone (11a, 110a) of said press suction roll (11, 110). The press felt (31, 41) on the side of the press suction roll (11, 110) is also passed through the second nip (N2) of the press section.
摘要翻译： 纸幅（W）通过具有两个单独的压榨压区（N 1 N 2，N 2 N 2）的压榨部。 至少第一压榨压区（N 1> 1）具有两个水接收压榨毛毯（31,41）。 在第一压区（N 1> 1）之后，将纸幅（W）从一个压榨毛毯（31/41）分离，并通过第二压榨机将相对的压榨毛毯（41/31）的支撑转移 压区（N 2 2）。 第一辊隙（N 1 1）的一卷是压力吸辊（11,110），并且将幅材（W）转移以跟随所述压榨辊的侧面上的压榨毡（31,41） 通过所述压力抽吸辊（11,110）的吸入区域（11a，110a）中的负压将吸辊（11,110）压紧。 压力机吸力辊（11,110）一侧的压榨毛毯（31,41）也通过压榨部的第二压区（N 2 2 N）。
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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：US5240563A
公开(公告)日：1993-08-31
申请号：US829989
申请日：1992-02-03
申请人： Mikko Karvinen , Reima Kerttula , Jorma Laapotti , Juhani Pajula
发明人： Mikko Karvinen , Reima Kerttula , Jorma Laapotti , Juhani Pajula
摘要： Closed press section in a paper machine, comprising a compact combination of press rolls. Certain of rolls define press nips with each other, between which nips the web has a closed draw supported by the face of a fabric. The press section has a center roll in connection with which a press nip or press nips are provided. A closed loop of a transfer band is passed around the center roll. The web is transferred on an outer face of the transfer band after the last press nip in the compact combination of rolls as a closed and constantly supported draw onto a drying wire in a drying section following after the press section. The transfer band loop is made of a transfer band fabric that substantially does not receive water and does not rewet the web. The web-adhesion properties of the outer face of the transfer band fabric are chosen so that, after the last nip, the web follows the transfer band fabric, and so that the web can be transferred as a fully closed draw onto the drying wire. In connection with the loop of the transfer band fabric, means for conditioning of the band and/or safety devices are provided, by whose means an adequate operation of the transfer band fabric is maintained.
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4.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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公开(公告)号：US5108547A
公开(公告)日：1992-04-28
申请号：US369037
申请日：1989-06-20
申请人： Juhani Pajula
发明人： Juhani Pajula
CPC分类号： D21F3/04
摘要： Press section of a paper machine provided with a frame construction which includes first a front frame and than a rear frame in a direction of running of a paper web through the machine. Press rolls are mounted on the front and rear frames. Between the front frame and the rear frame, and above the press roll combination, there is an at least partially open space through which at least most of the press rolls can be replaced. The space also facilitates replacement of the upper press fabrics. The press roll which forms the second nip is the press section is attached to a first intermediate frame part separate from the rear and intermediate frames and arranged to be pivotable by means of power units around horizontal articulation shafts in conjunction with the front frame. This press roll is connected to the first intermediate frame part through a second intermediate frame part by means of horizontal joints. The second intermediate frame part can be pivoted around the horizontal articulated joints by means of power units. Between the first intermediate frame part and the front frame, there are openable and lockable intermediate parts by means of which the first intermediate frame part can be rigidly fixed to the front frame. The intermediate parts can be opened so that the first intermediate frame part can be pivoted towards the front frame, at least when the suction roll in the press section is being replaced.
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公开(公告)号：US4932578A
公开(公告)日：1990-06-12
申请号：US244501
申请日：1988-09-14
申请人： Juhani Pajula
发明人： Juhani Pajula
IPC分类号： B65H23/032 , B65H23/038
CPC分类号： B65H23/038 , B65H23/032 , B65H2555/112
摘要： An adjustable guide assembly for a moving web or fabric. The guide assembly includes a bearing housing adapted to receive a bearing carrying an axle journal of a web or fabric guide roll and a pair of bellows mounted on opposite sides of the bearing housing, and wherein the bearing housing is movable with respect to a fixed frame for positioning the end of the web guide roll through adjustment of the fluid pressure within the bellows. Each of the bellows has a fluid space therewithin in which are situated a first bearing lug which is fixed in position relative to the fixed frame and a second bearing lug fixed to the movable bearing housing, the first and second bearing lugs having pivot points to which a connecting arm member is pivotally connected.
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公开(公告)号：US06510623B2
公开(公告)日：2003-01-28
申请号：US09867104
申请日：2001-05-29
申请人： Juhani Pajula
发明人： Juhani Pajula
IPC分类号： F26B1102
CPC分类号： D21G9/0063 , D21F5/00 , D21F5/18 , D21F5/185
摘要： A cantilevered frame in a paper machine dryer group of a dryer section supports a drying wire loop to run by at least one impingement drying unit positioned outside the loop. The frame structure (60) supports devices and rolls situated inside the wire loop (13) of the dryer group (R) which guide and support the run of the wire (13) and the web (W). A dryer section may have multiple such dryer groups which overlap one another with closed draws therebetween.
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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：US5611892A
公开(公告)日：1997-03-18
申请号：US319164
申请日：1994-10-06
申请人： Mikko Karvinen , Reima Kerttula , Jorma Laapotti , Juhani Pajula
发明人： Mikko Karvinen , Reima Kerttula , Jorma Laapotti , Juhani Pajula
摘要： A closed press section in a paper machine including a compact combination of press rolls, some of which define press nips with each other between which the web has a closed draw supported by the face of a fabric. The press section has a center roll in connection with which at least one press nip is formed. A closed loop of a transfer band is passed around the center roll. The web is transferred on an outer face of the transfer band after the last press nip in the compact combination of rolls as a closed and constantly supported draw onto a drying wire in a drying section following after the press section. The transfer band loop is preferably made of a fabric that substantially does not receive water and does not rewet the web. The web-adhesion properties of the outer face of the transfer band are chosen so that, after the last nip, the web follows the transfer band, and so that the web can be transferred as a fully closed draw onto the drying wire. In connection with the loop of the transfer band, means for conditioning/cleaning the band and/or safety devices are provided, by whose means an adequate operation of the transfer band is maintained.
摘要翻译： 一种造纸机中的封闭压榨部，包括压榨辊的紧凑组合，其中一些压榨辊彼此限定压榨辊，纤维网之间具有由织物的表面支撑的封闭的牵伸。 压榨部具有与其形成至少一个压榨压区的中心辊。 传送带的闭环绕中心辊。 在紧密组合的辊之间的最后一个压榨辊隙之后，将纸幅作为封闭且持续支撑的牵引力转印到转印带的外表面上，在牵引部之后的干燥部分中的干燥丝线上。 转移带环优选由基本上不接收水并且不再润湿网的织物制成。 选择转移带的外表面的网粘附性能，使得在最后压区之后，幅材跟随转印带，并且使得幅材可以作为完全封闭的拉丝转印到干燥丝上。 结合传送带的环路，提供用于调节/清洁带和/或安全装置的装置，通过它们的手段保持传送带的适当的操作。
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公开(公告)号：US5534116A
公开(公告)日：1996-07-09
申请号：US326581
申请日：1994-10-20
申请人： Mikko Karvinen , Reima Kerttula , Jorma Laapotti , Juhani Pajula
发明人： Mikko Karvinen , Reima Kerttula , Jorma Laapotti , Juhani Pajula
摘要： The invention relates to a closed press section in a paper machine and comprises a compact combination of press rolls. Several of the rolls define press nips with each other, between which nips the web has a closed draw supported by the face of a fabric. The press section has a center roll in connection with which a press nip or press nips are provided. A closed loop of a transfer band is passed around the center roll. The web is transferred on an outer face of the transfer band after the last press nip in the compact combination of rolls as a closed and constantly supported draw onto a drying wire in a drying section following after the press section. The transfer band loop is made of a transfer band fabric that substantially does not receive water and does not rewet the web. The web-adhesion properties of the outer face of the transfer band fabric are chosen so that, after the last nip, the web follows the transfer band fabric, and so that the web can be transferred as a fully closed draw onto the drying wire. In connection with the loop of the transfer band fabric, means for conditioning of the band and/or safety devices are provided, by whose means an adequate operation of the transfer band fabric is maintained.
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