DOOR UNIT OF COKE FURNACE WITH SEALING DIAPHRAGM Russian patent published in 1999 - IPC

FIELD: sealing of door unit of coke furnaces. SUBSTANCE: door unit of coke furnace includes frame of chamber of coke furnace, door body, at least one connecting plate joined with door body, main cover plate joined with connecting plate, sealing diaphragm. Cut-off frame is joined with sealing diaphragm in zone of frame of coke furnace chamber. Connecting plate may be regulated relative to door body by means of actuating members. The last have clamping threaded sleeve and return screw moving in said sleeve. Clamping threaded sleeve is screwed-on into door body and it may perform helical motion. Return screw is mounted with possibility of motion along thread in connecting plate towards chamber of coke furnace and in backward direction and it is provided with outer land supported by means of inner shoulder of clamping threaded sleeve. Actuating members are mounted in such a way that sealing diaphragm (with the aid of connecting plate) may be regulated in plane of diaphragm at operational deformations. EFFECT: increased service life period of sealing diaphragm. 6 cl, 6 dwg