公开(公告)号：US5666741A

公开(公告)日：1997-09-16

申请号：US610723

申请日：1996-03-04

申请人： Alfred Bubik ,  Erwin Brunmair ,  Harald Hess ,  Herbert Holik ,  Werner Leitenberger ,  Thomas Merath ,  Johann Moser ,  Helmet Stieb ,  Elmer Weisshuhn

发明人： Alfred Bubik ,  Erwin Brunmair ,  Harald Hess ,  Herbert Holik ,  Werner Leitenberger ,  Thomas Merath ,  Johann Moser ,  Helmet Stieb ,  Elmer Weisshuhn

IPC分类号： D21F3/02 ,  D21F5/04 ,  F26B11/02

CPC分类号： D21F5/04 ,  D21F3/0281

摘要： A drying section of a paper machine includes a plurality of individual drying groups, wherein the drying cylinders of a drying group are served by 2 respective dryer wire or felt that passes over drying cylinders of the drying group and presses a web to be dried against the surface of the drying cylinders. The invention is adapted for either single tier or double tier drying groups. At least one press roll is disposed between and separates two of the drying groups. In one embodiment, the at least one press roll forms a nip with the adjacent drying cylinder, either upstream or downstream, to define a dewatering nip through which the web passes. A dewatering belt passes over the press roll in the nip. The wire for a respective drying group is guided away from the dewatering nip so that only the web and the dewatering belt pass through the press nip. In alternate embodiments, two press rolls may be disposed between the adjacent drying groups, and the two press rolls define a press nip between them. A respective dewatering belt passes over each of the press rolls. One of those press rolls may also be in contact with and define a press nip with the adjacent drying cylinder in the adjacent drying group. An open draw free path may be defined between one of the press rolls and the adjacent drying cylinder.

摘要翻译： 造纸机的干燥部分包括多个单独的干燥组，其中干燥组的干燥筒由通过干燥组的干燥筒的两个相应的干燥丝或毛毡供应，并将干燥的网压在 干燥筒表面。 本发明适用于单层或双层干燥组。 至少一个压辊设置在两个干燥组之间并分离两个干燥组。 在一个实施例中，所述至少一个压榨辊与相邻干燥筒在上游或下游形成辊隙，以限定纤维网经过的脱水辊隙。 脱水带通过辊隙中的压辊。 用于相应干燥组的线被引导离开脱水辊隙，使得只有幅材和脱水带通过压榨压区。 在替代实施例中，两个压榨辊可以设置在相邻干燥组之间，并且两个压榨辊在它们之间限定了压榨压区。 相应的脱水带通过每个压榨辊。 这些压辊中的一个也可以与相邻干燥组中的相邻干燥筒接触并限定压区。 可以在一个压辊和相邻的干燥筒之间限定开放的无牵引路径。