Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1982-10-29
1983-09-20
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277148, 277199, 432115, F16J 1532, F27B 724
Patent
active
044051379
ABSTRACT:
A rotary seal seals a large, high temperature rotary drum to a stationary hood where the drum is mounted for rotation with respect to said hood. The seal is formed of a series of overlapping leaves of resilient metal disposed successively to encircle the drum surface, each leaf having an inner surface and an outer surface and a mounting end and a sealing end, with the mounting end affixed to the stationary hood, and the sealing end disposed at the drum surface with the outer surface concave. Each leaf extends obliquely at a substantial angle relative to an axial plane therethrough so that the sealing end is displaced circumferentially a substantial distance relative to the mounting end. Each leaf further has a sealing edge on its outer surface between the mounting and sealing ends extending obliquely of the axial plane, such sealing edge being disposed beneath the inner surface of an adjacent leaf. A wear liner is disposed on the inner surfaces of the leaves at their sealing ends for spacing the sealing ends from the drum surface and mating with the drum surface. The sealing ends are secured to the liner. The inner surface of a respective leaf is forced against the sealing edge of the respective adjacent leaf while leaving the respective sealing edge free to move relative to the respective inner surface upon flexure of the seal when the drum moves radially relative to the hood.
REFERENCES:
patent: 1550591 (1925-08-01), Stone
patent: 2253098 (1941-08-01), Schneider
patent: 2522993 (1950-09-01), Coffey
patent: 3383115 (1968-05-01), Eckley et al.
patent: 3917286 (1975-11-01), Loyd
patent: 3940239 (1976-02-01), Rossi et al.
patent: 4111439 (1978-09-01), Schmidt
Webb, "Rotary Kiln Seals," Pit & Quarry, Aug. 1975, 2 pp.
Ciments d'Obourg, Belgium, Cement Technology, Jan./Feb. 1974, pp. 251-253.
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