发明名称 Method and apparatus at the end of the drying section of a paper machine
摘要 In a method at the end of the drying section of a paper machine, drying cylinders (1, 2) are arranged in two substantially horizontal cylinder rows, wherein the first drying cylinders (1) are placed substantially higher than the second drying cylinders (2). In the method, the web (W) to be dried is conveyed alternately between the cylinder rows of the drying cylinders (1, 2). Further in the method, the transfer of the web (W) between the drying cylinders (1, 2) is supported by a wire run arrangement, and the web is guided after the last drying cylinder (1, 2) of the drying section (A) by a transfer arrangement in between the rolls of a pair of rolls in the calender section (B) of the paper machine. In the method, after the uppermost horizontal cylinder row (SR1) formed by the first drying cylinders (1), at least one drying cylinder (1') is placed in such a way that the upper surface of its mantle lies substantially higher than the level defined by the upper surfaces of the mantles of the drying cylinders (1) of the upper horizontal cylinder row (SR1), and the web (W) is conveyed through this upper drying cylinder (1'), while being supported by a continuous support means, such as a support wire (3), towards the calender section (B). By placing several drying cylinders (1', 2') at levels one higher than the other, the web can be conveyed to the height of the upper portion of the calender section, and the drying section can simultaneously be shortened in the longitudinal direction of the machine.
申请公布号 AU9165098(A) 申请公布日期 1999.04.05
申请号 AU19980091650 申请日期 1998.09.14
申请人 VALMET CORPORATION 发明人 JUKKA KILPIA;ROBERT BARIL
分类号 D21F5/04;D21G1/00;D21G9/00 主分类号 D21F5/04
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