Drying and gas or vapor contact with solids – Apparatus – Rotary drums or receptacles
Patent
1989-10-05
1990-11-20
Yuen, Henry C.
Drying and gas or vapor contact with solids
Apparatus
Rotary drums or receptacles
34116, 34117, F26B 1102
Patent
active
049708058
ABSTRACT:
A transfer apparatus is disclosed for transferring a tail of a web from a press roll to a dryer of a dryer section. The apparatus includes a lead-in roll which is disposed adjacent to and spaced relative to the press roll for leading the tail of the web from the press roll towards the dryer. A dryer felt extends around the lead-in roll and from the lead-in roll to the dryer such that the tail is supported by the felt from the lead-in roll to the dryer. The felt and the dryer define therebetween a positive air pressure in-going nip. A rotatable suction roll is disposed adjacent to and on the opposite side of the felt relative to the in-going nip such that in use of the apparatus, the suction roll generates a flow of air from the positive air pressure in-going nip through the felt such that when the tail of the web is being transferred from the press roll towards the dryer, the tendency for the positive air pressure in the vicinity of the in-going nip to prevent threading of the tail between the felt and the dryer is inhibited.
REFERENCES:
patent: 4000035 (1976-12-01), Schiel et al.
patent: 4602439 (1986-07-01), Eskelinen et al.
patent: 4625434 (1986-12-01), Karlsson et al.
patent: 4669198 (1987-06-01), Wedel
patent: 4693784 (1987-09-01), Aula et al.
patent: 4716660 (1988-01-01), Thiele
patent: 4875976 (1989-10-01), Wedel
Archer David J.
Beloit Corporation
Campbell Raymond W.
Veneman Dirk J.
Yuen Henry C.
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