| 摘要 |
A material separating apparatus for separating particles up to a preselected size from a material having particles of different sizes therein includes a trough having a material input end longitudinally spaced from a material discharge end. The apparatus also includes a separator having a plurality of longitudinally spaced finger screen sections between the input end and the discharge end and along the longitudinal axis of the trough. The finger screen sections each have a backbone extending from side to side across the width of the trough and also each have forwardly extending fingers connected at one end to the backbone. The fingers are spaced side by side from each other by a preselected amount at forward ends thereof sufficient to allow particles up to the preselected size to pass through the fingers as the trough is vibrated to cause the material to move from the input end to the discharge end. The finger screen devices also each have the forward ends of the fingers thereof overlapping the next forwardly adjacent finger screen device and include a rearwardly depending leg connected at one end to the backbone thereof. The apparatus further includes the forward ends of the fingers being vertically spaced above the next forwardly adjacent finger screen device by an amount equal to the preselected amount of spacing therebetween. With this arrangement, the material is conveyed along therethrough and over successive ones of the finger screen sections with particles up to the preselected size falling through the finger screen sections as the material moves from the input end to the discharge end of the trough. |
