Screen for vibrating material sorting apparatus

B - Operations – Transporting – 07 – B

Patent

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Details

B07B 1/46 (2006.01)

Patent

CA 2261788

A screen (22, 24) for a vibrating material sorting apparatus (12, 14, 16, 18, 20) of the type used to sort material in mining operations and the like has a plurality of rows and columns of trapezoidal apertures (30) formed through it. The apertures (30) are oriented so that the narrowest end first encounters material moving down the screen. The apertures are further tapered in cross section, and flare outwardly (34, 36) from the top surface of the screen to the bottom surface. In addition, each of the apertures slopes at an angle (B) which is selected to be the same as the degree of incline of the screen when it is mounted in a vibrating material sorting apparatus.

L'invention concerne un tamis (22, 24) pour un appareil vibrant de triage de matériau (12, 14, 16, 18, 20) du type de ceux utilisés pour trier des matériaux dans les opérations minières et similaire, et qui présente plusieurs rangées et colonnes d'ouvertures trapézoïdales (30). Les ouvertures (30) sont orientées de sorte que l'extrémité la plus étroite entre la première en contact avec le matériau descendant dans le tamis. Les ouvertures présentent, de plus, une section conique, et s'évasent vers l'extérieur (34,36) depuis la surface supérieure du tamis jusqu'à la surface inférieure. De plus, chacune des ouvertures est oblique selon un angle (B) choisi de sorte qu'il soit équivalent au degré d'inclinaison du tamis lorsqu'il est monté dans un appareil vibrant de triage de matériaux.

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