Suction roll in particular for a paper web dryer

Details Suction roll in particular for a paper web dryer Suction roll in particular for a paper web dryer

1993-07-19

1995-11-14

Gromada, Denise L.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

34117, 34120, D21F 310, F26B 1330

Patent

active

054655021

ABSTRACT:
A suction roll (1), in particular for a paper web dryer, comprising a perforated roll jacket (2), with at least one non-rotatable hollow shaft (3) which communicates with the interior of the suction roll via openings (7, 7') and at least one closing member (9) displaceable in the axial direction for separating off at least one peripheral region of the suction roll. The at least one, in particular disc-shaped dividing wall (5) is located in the suction roll interior and has at least one, preferably central opening (22). It can be of benefit when the dividing wall (5) corotates with the roll and/or when the at least one closing member (9) has the form of a hollow cylinder. Further, if the non-rotatable hollow shaft (3) is designed to be axially displaceable, it can be used to control the size of the opening (22) in the dividing wall (5).

REFERENCES:
patent: 5347728 (1994-09-01), Pinter et al.
patent: 5371954 (1994-12-01), Pinter et al.

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