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    • 4. 发明授权
    • Arrangement in the wet end of a paper machine
    • 造纸机湿端的布置
    • US06942760B1
    • 2005-09-13
    • US10111342
    • 2000-10-26
    • Pertti HeikkiläAntti PoikolainenAri Puurtinen
    • Pertti HeikkiläAntti PoikolainenAri Puurtinen
    • D21F1/40D21F2/00D21F9/00
    • D21F9/003D21F2/00
    • At the end of the twin wire zone of a paper machine former, a suction box (17) inside the upper wire loop (11) has a curved lid (17′) opposite a roll (18) within the lower wire loop (10). The lid is curved in a run situation so the tension of the upper wire (11) reduces the normal force between the wire (11) and the lid (17′) caused by the underpressure of the suction box. The underpressure keeps the web mainly off from the roll (18) and the lower wire (10) while being adhered to the underside of the upper wire (11) and conforming to the curved shape of the lids. Members (17a, 18′) are provided for making the web follow the lower wire (10) in a break situation for conducting it to the broke handling system.
    • 在造纸机成型机的双线区域的末端,上线环(11)内部的吸箱(17)具有与下线环(10)内的辊(18)相对的弯曲盖(17'), 。 盖子在运行状态下弯曲,使得上线(11)的张力减小了由吸力箱的负压引起的线(11)和盖(17')之间的法向力。 负压在粘合到上线(11)的下侧并且符合盖的弯曲形状的同时保持幅材主要从辊(18)和下线(10)脱离。 成员(17a,18')被设置用于在断开情况下使网跟随下线(10),以将其引导到破碎处理系统。
    • 10. 发明授权
    • Suction box in paper machine and method in the suction box in a paper machine
    • 造纸机吸纸箱和造纸机吸箱中的方法
    • US06322668B1
    • 2001-11-27
    • US08998432
    • 1997-12-26
    • Jorma SnellmanAntti PoikolainenAri PuurtinenSamppa Salminen
    • Jorma SnellmanAntti PoikolainenAri PuurtinenSamppa Salminen
    • D21F148
    • D21F1/52
    • A suction box in a paper machine including a vacuum chamber, a deck or a number of substantially U-section holders open toward a wire and ribs arranged in the deck or the holders so that they can be loaded against the wire. At least in a running situation, the deck of the suction box is curved or the ribs are arranged to provide a curve run of the wire so that the wire tension of the curved run over the deck or ribs serves to lower a normal force which is produced by the vacuum present in the suction box and which is effective between the wire and the deck or ribs. A method in a suction box in a paper machine, wherein a vacuum is formed in a vacuum chamber of the suction box and, during formation of the vacuum, the deck and/or the ribs is/are pressed against the wire. At least in a running situation, the curve form of the deck of the suction box or the position of the ribs is such that the tension of the wire running over the deck or ribs lowers the normal force which is produced by the vacuum present in the suction box and which is effective between the wire and the deck/ribs.
    • 一种造纸机中的抽吸箱,包括真空室,甲板或多个基本上U形的保持器,其朝向布置在甲板或保持器中的线和肋开口,使得它们可以抵靠电线加载。 至少在运行情况下,吸气箱的甲板是弯曲的,或肋布置成提供钢丝的弯曲运行,使得弯曲运行在钢板或肋条上的钢丝张力用于降低法向力, 由抽吸箱中存在的真空产生,并且在电线和甲板或肋之间有效。 一种造纸机中的抽吸箱中的方法,其中在吸入箱的真空室中形成真空,并且在形成真空期间,甲板和/或肋被压靠在钢丝上。 至少在运行中,抽吸箱的甲板的曲线形式或肋的位置使得在甲板或肋上运行的钢丝的张力降低了由真空中存在的真空产生的法向力 抽吸箱,在电线和甲板/肋骨之间有效。