Hoppers with applied motion to promote flow

B - Operations – Transporting – 65 – G

Patent

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Details

B65G 25/00 (2006.01) B65D 88/66 (2006.01)

Patent

CA 2270536

An improvement to a hopper (1) to promote the flow of solid particulate material includes mounting one or more walls (3) of the hopper for limited oscillatory motion in a direction parallel to the wall and perpendicular to the desired flow direction, and then providing an actuator (6) connected to the remainder of the hopper (1) to impart such motion to the wall. The relative motion between the moving wall (3) and the particulate material effectively rotates the friction force to the direction of relative motion, leaving the friction in the desired flow direction approaching zero. As a result, downward flow can occur on walls that are only shallowly inclined. The improvement is applicable to hopper-like structures in railroad cars and ships, where it facilitates discharge onto moving conveyors.

Amélioration apportée à une trémie (1) et destinée à favoriser l'écoulement de matière particulaire solide, qui consiste à monter une ou plusieurs parois (3) de la trémie de manière à ce qu'elles effectuent un mouvement d'oscillation limité dans une direction parallèle à la paroi et perpendiculaire à la direction d'écoulement désirée, et à placer un actionneur (6) connecté au reste de la trémie (1) pour conférer ce mouvement à la paroi. Le mouvement relatif entre la paroi (3) mobile et la matière particulaire fait effectivement tourner la force de frottement dans la direction de mouvement relatif, le frottement dans la direction désirée d'écoulement étant pratiquement nul. Il en résulte qu'un écoulement vers le bas peut se produire sur des parois qui ne sont que légèrement inclinées. Ladite amélioration est applicable à des structures de type trémie présentes dans des wagons de chemin de fer et des bateaux, qui facilitent le déchargement sur des transporteurs mobiles.

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