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

IPC分类号： D21F3/02 ,  D21F3/04 ,  D21F3/06 ,  D21F9/02

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。

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

IPC分类号： D21F3/04 ,  D21G9/00 ,  D21F3/02 ,  D21F7/00

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。

公开(公告)号：US5326435A

公开(公告)日：1994-07-05

申请号：US20139

申请日：1993-02-19

申请人： Martti Hirsimaki ,  Jouko Villa ,  Lauri Suvanto

发明人： Martti Hirsimaki ,  Jouko Villa ,  Lauri Suvanto

IPC分类号： D21F3/00 ,  D21F7/02 ,  D21F1/32

CPC分类号： D21F7/02 ,  D21F3/00

摘要： The invention relates to a method and device in the crawling operation of a press felt in a paper machine. The press felt is passed as a closed felt loop through a nip defined between a center roll and a press roll in a press section of the paper machine. The felt is driven during the running operation of the paper machine by means of a nip drive between the center roll and the press roll of the press. When the paper machine is not operating, and the nip between the center roll and the press roll in the paper machine is open, the felt is moved, so as to moisten the new felt, by means of the crawling drive by rotating the drive roll. An axle of the drive roll is permanently connected to a drive rim. During the crawling operation, a drive wheel of a hydraulic device is brought into engagement with the drive rim. When the crawling drive of the felt is not in operation, the drive roll is switched to the free revolving position by shifting the drive wheel of the hydraulic device apart from the drive rim. The drive wheel is operationally connected to the drive rim.

摘要翻译： 本发明涉及一种造纸机中压榨毛毯爬行操作的方法和装置。 压榨毛毯作为一个闭合的毡环通过在造纸机的压榨部分中间辊和中压辊之间限定的辊隙。 在造纸机的运行操作期间，毛毡通过中心辊和压机的压辊之间的夹持驱动而被驱动。 当造纸机不工作，并且造纸机中的中心辊和压辊之间的辊隙打开时，毛毡被移动，以便通过旋转驱动辊通过爬行驱动来润湿新的毛毯 。 驱动辊的轴永久地连接到驱动轮缘。 在爬行操作期间，液压装置的驱动轮与驱动轮缘接合。 当毛毡的爬行驱动不工作时，通过将液压装置的驱动轮与驱动轮缘分开移动，将驱动辊切换到自由旋转位置。 驱动轮可操作地连接到驱动轮缘。

公开(公告)号：US5759355A

公开(公告)日：1998-06-02

申请号：US673276

申请日：1996-06-28

申请人： Martti Hirsimaki

发明人： Martti Hirsimaki

IPC分类号： D21F3/02 ,  D21F3/04

CPC分类号： D21F3/045 ,  D21F3/04

摘要： A press section in a paper machine including a first press nip formed between an upper roll and a lower roll whereby a paper web to be dewatered is passed through the first press nip on support of two press felts. The press section includes at least a second and a third press nip formed in connection with a smooth-faced center roil. A press felt is passed through the second and third press nips formed in connection with the center roll. The lower roll in the first nip is a metal-mantle lower roll which has a diameter substantially larger than the diameter of the upper roll in the first nip.

摘要翻译： 一种造纸机中的压榨部，其包括形成在上辊和下辊之间的第一压榨压区，由此要脱水的纸幅通过两个压榨毛毯的支撑件上的第一压榨压区。 压榨部包括至少一个第二和第三挤压压区，其形成在平滑的中心辊上。 压榨毛毯穿过与中心辊相连形成的第二和第三压榨辊隙。 第一压区中的下辊是金属外套下辊，其直径基本上大于第一辊隙中上辊的直径。

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

IPC分类号： D21F3/04 ,  D21G9/00 ,  D21F3/02

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。