| 摘要 |
The invention relates to apparatus for opening and closing aperture, especially bottom aperture (10) of material hopper (11) is arranged above the mouth of blast furnace, having operated flap plate (12), which is can be moved to open position, leaving opening aperture and in closed position, closing of aperture and vise versa. The invention is characterized in that flap plate (12) is connected with linkage arrangement (13) so that in zone tapping aperture (10) is carried out liner movement is essentially perpendicularly of tapping aperture (10) plane and the distance from tapping aperture (10), - rotary motion. At that rotary motion of flap plate (12) at least in overlap zone of flap plate (12) of tapping aperture (10) comprises the translational motion parallel to tapping aperture (10) plane on which is applied on rotary motion. Technical result: avoidance premature of wear of sealing system. |
