F - Mech Eng,Light,Heat,Weapons – 26 – B
Patent
F - Mech Eng,Light,Heat,Weapons
26
B
34/22
F26B 17/12 (2006.01) D21F 5/04 (2006.01) F26B 19/00 (2006.01) F26B 25/06 (2006.01)
Patent
CA 1171650
ABSTRACT OF THE DISCLOSURE An apparatus for use in the drying section of a paper machine. The drying section comprises two rows of drying clinders or rolls, one above the other. The web travels between these cylinders and rolls, meandering from one row to the other, all the time supported by a drying fabric. The web lies directly against the cylinder or roll surface in one row of cylinders or rolls and similarly the drying fabric is adjacent to the roll surface, while the web is on the outside, in the other row of cylinders or rolls. The apparatus comprises a suction box or a plurality of suction boxes, disposed to operate against the drying fabric. Said suction box or suction boxes extend sub- stantially over the entire length of the joint run of the web and the drying fabric from one cylinder to roll to the other. In addition, the suction of said suction box also extends into the wedge space between the drying fabric and the drying cylinder or equivalent roll shell and in at least the suction box on the entry side of the drying fabric and web or the respective suction boxes, there are suction apertures through which the subatmospheric pressure pre- vailing therein acts in said wedge space.
365025
Marks & Clerk
Valmet Oy
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