Heated mill drive system

Details Heated mill drive system Heated mill drive system

1980-02-07

1981-11-17

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

74606R, 366 24, 366144, 432103, F26B 1104

Patent

active

043002927

ABSTRACT:
A rotatable drum apparatus for use with a drying kiln or a dry grinding mill has a large gear wheel secured to the periphery of the drum, the drum being heated. In order to minimize the generation of undue stresses between gear wheel and drum due to thermal gradients, the apparatus includes a stationary heat shield extending about the gear in thermal stabilizing relation therewith. The arrangement includes air pressurization within the shield and seal means between stationary and rotary components, to limit the loss of heated air from the enclosure, and to preclude the ingress of air and foreign particles into the enclosure.

REFERENCES:
patent: 1952464 (1934-03-01), Rybeck
patent: 3186255 (1965-06-01), Schmitter et al.
patent: 3197187 (1965-07-01), Lakin et al.
patent: 3822651 (1974-07-01), Harris et al.

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