Dynamic seal

Details Dynamic seal Dynamic seal

1993-07-02

1995-04-11

Reynolds, Bruce A.

Industrial electric heating furnaces

Arc furnace device

Furnace body detail

373 79, 373111, 432 8, 432 59, 110205, F27B 1404

Patent

active

054065798

ABSTRACT:
A method and apparatus for limiting the passage of a gas such as air through an opening, particularly an opening through which solid material passes, by providing a sealing chamber in advance of the entrance to the low pressure chamber having a large plenum with a variable speed exhaust blower in its upper portion, and a grate situated in its lower portion for access of air to the plenum. The blower speed is responsive to differential pressure measurements taken in the low pressure chamber and immediately adjacent the exterior of the low pressure chamber. Upstream of the plenum are one or more mechanical seals or flexible baffles which contact the top of the solid charge material and ride over it as the solid material passes beneath the mechanical seal.

REFERENCES:
patent: 1299337 (1919-04-01), Hechenbleikner
patent: 3645516 (1972-02-01), Turpin et al.
patent: 3841465 (1974-10-01), Miller et al.
patent: 4285668 (1981-08-01), Pepe
patent: 4543124 (1985-09-01), Vallomy
patent: 4609400 (1986-09-01), Vallomy

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