Method and apparatus for ventilation in a multi-cylinder dryer o

Details Method and apparatus for ventilation in a multi-cylinder dryer o Method and apparatus for ventilation in a multi-cylinder dryer o

1990-03-27

1991-09-03

Bennett, Henry A.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

34115, F26B 1330, F26B 1304

Patent

active

050440950

ABSTRACT:
Method and apparatus for ventilating pockets in a twin-wire multi-cylinder dryer of a paper machine which comprises upper and lower lines of drying cylinders, an upper wire guided by surfaces of the upper cylinders and upper guide rolls and a lower wire guided by surfaces of the lower cylinders and lower guide rolls, and wherein the web runs between the upper and lower cylinders over an open draw, includes providing the guide rolls with perforated mantles for directing air flows from their interiors into the pockets, and providing blow boxes with nozzles for directing air flows into the pockets.

REFERENCES:
patent: 4172007 (1979-10-01), Kankaanpaa
patent: 4881327 (1989-11-01), Hauser et al.
patent: 37851822 (1973-08-01), Crist

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