Apparatus for regulating air flow through an air port of a chemi

Details Apparatus for regulating air flow through an air port of a chemi Apparatus for regulating air flow through an air port of a chemi

1989-10-30

1991-03-26

Bennett, Henry A.

Furnaces

Tuyeres

110297, 15246, 266266, F23L 500, F23L 1300, F23L 1310, C21B 716

Patent

active

050019929

ABSTRACT:
Apparatus for regulating air flow through an air port in a chemical recovery furnace. A plenum having an adjustable damper mounted inside a wind box associated with the furnace adjacent to the air port supplies and regulates the flow of air from the wind box to the furnace through the air port. A metal cleaning head adapted for rotatable insertion into the air port for cleaning excrescent material from the peripheral edges of the air port without blocking air flow through the port is pivotally mounted in a retracted, at-rest position adjacent to and above the air port so as not to interfere with movement of the adjustable damper. During a cleaning cycle, the damper is moved to a retracted position on the floor of the plenum so as not to interfere with the moving cleaning head. A short stroke, double articulated damper positioning mechanism facilitates movement of the damper blade in limited space.

REFERENCES:
patent: 4706324 (1987-11-01), Goodspeed
patent: 4838182 (1989-06-01), Goodspeed
patent: 4846080 (1989-07-01), Ross et al.

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