Effect of Combinational Filling Methods on Wall Pressure of Bin-Hopper Gate.

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  • ビンホッパー入口の壁圧に及ぼす組合せ充填法の効果
  • ビンホッパー イリグチ ノ ヘキアツ ニ オヨボス クミアワセ ジュウテンホウ

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Abstract

It is already known that although a coarse bed achieved by central feeding flows down with a perfect mass flow during discharge, that of a dense bed achieved by peripheral feeding brings about a pulsating wall pressure at the hopper gate in a bin.<BR>This paper outlines the wall pressure generated during the discharge of a bed achieved by combinational filling methods, such as a coarse bed piled up above a dense bed or the opposite.<BR>As a result, it was found out that the severe pulsating wall pressure occured at the hopper gate, in the case of a combination bed achieved by central feeding on the surface after filling from the hopper gate to the initial upper parts of the cylindrical section by peripheral feeding.<BR>The mechanism was explained by reasoning that arching occuring at the hopper gate grows strong under flowing conditions such as becoming vertical load to flow joins above a dense filling bed unbecoming to a flow.

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