Method and apparatus for resealing the large bell rod in a doubl

Details Method and apparatus for resealing the large bell rod in a doubl Method and apparatus for resealing the large bell rod in a doubl

1976-05-27

1977-12-27

Sheridan, Robert G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

214152, 277 2, 277 64, F27B 1112

Patent

active

040650049

ABSTRACT:
When the packing rings about the large bell rod in a double bell blast furnace charging system become worn, a new seal is established about the large bell rod above the worn seal without requiring shutdown of the furnace or removal and replacement of the worn seal and bell rod. This is achieved by forming an enclosure in situ about the large bell rod directly above the worn packing to entrap leakage past the worn packing in the enclosure, and by providing a new seal assembly including new packing rings about the large bell rod in the upper end of the enclosure where the large bell rod emerges. The upper end portion of the enclosure is secured relative to the large bell rod by brackets projecting outwardly from the enclosure to a point where they are fastened to hanger rods conventionally utilized to raise and lower the small bell rod. Preferably, the half sections of the enclosure are manufactured in a plurality of vertical sections secured and sealed together one above the other in serial fashion about the bell rod.

REFERENCES:
patent: 3070242 (1962-12-01), Berczynski
patent: 3233824 (1966-02-01), Johnson

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