Title:
【発明の名称】製紙機械の乾燥領域におけるウエブの保持方法並びに装置、及びこれに使用されるシリンダ
Document Type and Number:
Japanese Patent JP2795666
Kind Code:
B2
Abstract:
The invention concerns a method to adhere a web (W) to a drying wire (H) against the centrifugal forces and various blow phenomena, which attempt to detach the web (W) from said wire (H) in the drying groups provided with single-wire draw in a multi-cylinder dryer of paper machine. The drying groups comprise as upper cylinders drying cylinders (K) heated by means of steam or equivalent and the web (W) is pressed by the drying wire (H) against outer cylinder faces of said drying cylinders (K). The drying groups further comprise as lower cylinders leading cylinders (10) on which the web (W) runs outside the drying wire (H), said leading cylinders (10) being provided with holes (15) passing through a mantle (11) of the leading cylinders (10). The holes (15) open into an interior space (14) of negative pressure (P1) in the leading cylinders (10) and into the outer face of said cylinders (10), said negative pressure (P1) being transmitted to said outer face through said holes (15). The leading cylinders (10) comprise shafts (18) on which the respective leading cylinder (10) is journalled revolving, and at least one of said shafts (18) has a duct (18a) through which said negative pressure (P1) is applied to the space (14) inside said cylinder (10). The shafts (18) communicate with a suction duct (19) from a source (20) of said negative pressure (P1). A part of the holes (15) in each leading cylinder (10) opens into the open air in the upper part of the leading cylinder (10) so that flow of air is directed into the interior (14) space of said cylinder. Said negative pressure (P1) in said interior space (14) is selected within the range of 1000 Pa to 3000 Pa.
Inventors:
HEITSUKI IRUBESUPEEE
ARAN RIIDESU
ORABI BIITANEN
ARAN RIIDESU
ORABI BIITANEN
Application Number:
JP5394889A
Publication Date:
September 10, 1998
Filing Date:
March 08, 1989
Export Citation:
Assignee:
BARUMETSUTO PEEPAA MASHINARII INC
International Classes:
D21F3/10; D21F5/04; (IPC1-7): D21F5/04; D21F3/10
Domestic Patent References:
| JP5515242U | ||||
| JP4731U |
Attorney, Agent or Firm:
Takashi Ishida (2 outside)