| 摘要 |
PURPOSE: An aggregate sorting screen is provided to improve aggregate sorting yield by increasing residence time of the aggregate. CONSTITUTION: An aggregate sorting screen comprises a screen mesh(20) inside a frame(10). The screen mesh comprises a plurality of sorting holes. The screen mesh comprises a plurality of a first strap(24), and a plurality of a second straps(26). The first straps are fixed to the frame, and are arranged along the progress direction of the aggregate. The second scraps are arranged in the location crossing the first strap and are combined with the first strap in a weaving method. The second strap comprises an aggregate holding portion(28) on the upper location of the first strap. A holding protrusion is placed inside the lower circumference part. The holding protrusion circulates the aggregate and has a height relatively higher than the screen net. |
