Archbreaking hopper for bulk solids

B - Operations – Transporting – 67 – D

Patent

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Details

B67D 7/06 (2010.01) B65D 88/28 (2006.01) B65D 88/64 (2006.01)

Patent

CA 2274699

A hopper that greatly reduces the tendency of the particulate material to form bridges within the hopper is shaped so that its walls slope downward more steeply at the bottom of the hopper and slope less steeply with increasing heights above the outlet. In one embodiment the slope decreases continuously with increasing height above the oulet. In another embodiment the hopper is formed of successive sections, each joined around its circumference to the next-lower section, the wall of each section being less steeply inclined than the wall of the adjoining next-lower section. Exact relationships are given, relating the slopes of successive sections, and if the hopper is built in conformity with theses relationships, arching of the particulate material is eliminated.

Trémie qui réduit fortement la tendance d'une matière particulaire à former des voûtes dans la trémie, dont la forme est telle que ses parois sont inclinées plus fortement vers le bas au niveau du fond de la trémie et sont inclinées moins fortement à mesure qu'elles s'éloignent de l'orifice de sortie. Dans un mode de réalisation, l'inclinaison décroît de manière continue à mesure que la hauteur augmente au-dessus de l'orifice. Dans un autre mode de réalisation, la trémie est constituée de parties successives, qui sont chacune jointes au niveau de leur circonférence à la partie immédiatement inférieure, la paroi de chaque partie étant inclinée moins fortement que la paroi de la partie immédiatement inférieure. Des relations exactes sont indiquées, concernant les inclinaisons des parties successives, et si la trémie est construite selon ces relations, le voûtage de la matière particulaire est éliminé.

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