System for sealing of kilns
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United States of America Patent
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Oct 20, 1981
Grant Date -
N/A
app pub date -
Oct 17, 1979
filing date -
Oct 25, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sealing assembly for a rotary kiln or furnace is achieved with a pair of outer sealing rings urged into a pressured sealing engagement by a barrier gas provided at a predetermined pressure from a burette. An internal intermediate ring, preferably formed of a graphite fiber material serves as an inner seal against the direct transfer of internal gases and heat to the outer sealing rings which provide the final sealing against gas escaping during rotation of the inner work support means relative to the outer stationary supporting means. The intermediate ring also acts as a bearing and as a spacer and absorbs compression forces between the turning inner chamber, or grate, and the outer stationary supporting means.
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