Patent ID: 7156371
Filing Date: 2007-01-02
Classification: C21B,F27B,F27D

Abstract:
1. A device for closing or opening an opening, in particular a bottom opening ( 11 ) of a material bunker ( 12 ) arranged above the furnace throat of a blast furnace, including a tilting disk ( 10 ) connectable to a drive, and having a surface lying in a horizontal plane when the disk closes the opening characterized in that the tilting disk ( 10 ) is articulated to two swivel arms ( 15 , 16 ), pivotably mounted about two swivel axes ( 13 , 14 ) extending parallel to each other, in such a manner that upon a movement of said arms, the disk surface pivots about one of said axes away from the opening toward a first vertical plane while pivoting about said second of said axes toward a second vertical plane positioned above the opening along oppositely directed arc paths ( 23 , 24 ).