| 摘要 |
PROBLEM TO BE SOLVED: To provide a crushed sand fine particle sorter capable of sorting crushed sand by spraying air on the crushed sand spread. SOLUTION: This sorter is provided with a sorter body 1 in which an inclined sorting surface 4 formed by placing plural receiving plates 40 in a staircase-like state so as to downwardly move crushed sand from above is provided, a sorting chamber 5 formed on the upper face side of the sorting surface 4, an air inflow chamber 6 formed on the rear side of the inclined sorting surface 4 and netlike sheets 42 each of which is placed so as to extend from the front end of the corresponding one of the receiving plates 40 in the movement direction of the crushed sand. Flow passages 41 each of which is formed between adjacent two of the receiving plates 40, partly overlapping each other, and has openings below the corresponding one of the netlike sheets 42 in the sorting chamber 5 and the air inflow chamber 6, respectively, so as to communicate the air inflow chamber 6 with the sorting chamber 5 and to allow air to flow from the air inflow chamber 6 to the sorting chamber 5 through the air flow passages 41 are provided.
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