Seal of a mill

Details Seal of a mill Seal of a mill

1982-10-21

1984-04-10

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 15, 277 74, F16J 1540

Patent

active

044417209

ABSTRACT:
A sealing arrangement between rotating and stationary parts of grinding mills, particularly those operated at pressure above atmospheric. A barrier air chamber is connected through a gap with the interior space of the mill. The flow direction of barrier air to the chamber is directed downwardly within the gap. The barrier air has a pressure exceeding the pressure of carrier gas for preventing passage of the carrier gas together with coal dust toward the outside. The width of the gap is adjustable, and the flow direction of the barrier air may also be oblique downwards within the gap. The gap at the same time, may be formed by an obliquely extending guide portion.

REFERENCES:
patent: 4920 (1847-01-01), Gendebien et al.
patent: 1649148 (1927-11-01), Blyth
patent: 3508758 (1970-04-01), Strub
patent: 3909012 (1975-09-01), Denis
patent: 4087097 (1978-05-01), Bossens et al.

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