Heated dryer drum for paper machines and the like

Details Heated dryer drum for paper machines and the like Heated dryer drum for paper machines and the like

1974-11-21

1976-03-30

Sprague, Kenneth W.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

165 89, F26B 2500

Patent

active

039464997

ABSTRACT:
A heated dryer drum consisting of a peripherally closed cylindrical shell with dryer heads engaging the shell at opposite ends thereof and each comprising a central bearing journal for rotatably supporting the drum. Included inside the drum is at least one tie rod extending between and connected to the dryer heads near the centers thereof. The dryer heads are axially resilient and preloading of the tie rod, or tie rods, preloads the dryer shell. The dryer heads advantageously taper in thickness from a thicker hub portion to a thinner peripheral portion, with the peripheral portion engaging opposite ends of the dryer shell. The tie rod, or tie rods, may be heated during installation so that, upon cooling, a desired preload will be imparted to the dryer shell. Furthermore, spring means can be incorporated in the tie rod, or tie rods, for controlling the preload on the dryer shell. Still further, measuring means may be incorporated in the tie rod, or tie rods, so that the degree of preload thereon can readily be observed.

REFERENCES:
patent: 2166245 (1939-07-01), Goff et al.
patent: 2328321 (1943-08-01), Berry
patent: 2542287 (1951-02-01), Neubauer
patent: 2576036 (1951-11-01), Ostertag et al.
patent: 2879039 (1959-03-01), Skinner

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