| 摘要 |
PROBLEM TO BE SOLVED: To smoothly discharge some powdery granules out of powdery granules storing hopper for storing and discharging powdery granules in which a problems caused key by vibration at a wall surface of the hopper is prevented. SOLUTION: Screens 11, 21 having vibration motors 12, 22 are installed in a powdery granule storing hopper 1 through supporting members 13, 23. The screens 11, 21 directly apply vibration against ignited ashes 4 of powdery granules fed into the powdery granules storing hopper 1 so as to prevent occurrence of bridging phenomenon or rat-hole phenomenon caused by coagulation of powdery granules. The screens 11, 21 are supported under a non-contacted state with the wall surface 3 and further soft member absorbing vibration is fixed to the supporting members 13, 23, so that the ignited ashes 4 are not coagulated through vibration at the wall surface 3 and further an occurrence of a resonance phenomenon or noise can be prevented.
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