System for sealing of kilns

Details System for sealing of kilns System for sealing of kilns

1979-10-17

1981-10-20

Camby, John J.

Heating

Tumbler-type rotary - drum furnace

Having flexible, cooled, or air curtain seal between rotary...

34242, 432242, F27B 724, F27D 118, F26B 2500

Patent

active

042958245

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.

REFERENCES:
patent: 1620989 (1927-03-01), Agthe
patent: 3584885 (1971-06-01), Oberndorfer
patent: 3940239 (1976-02-01), Rossi et al.

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