| 摘要 |
PURPOSE: A sand sorting machine is provided to sort sand having quality usable as sand for ready-mixed concrete by removing foreign materials of waste building material crushed recycling stone powder. CONSTITUTION: The sand sorting machine comprises a rotational cylinder(10) which is horizontally put on supporting rollers so that the rotational cylinder(10) is rotated by receiving rotational force of geared motor through chain, and at both sides of which injection port(10a) and discharge port(13) are installed; a transfer screw(12) fixed to the inner surface of the rotational cylinder(10) in several lines; a conveyor belt(5) for injecting stone powder into the rotational cylinder(10); a water supply port(8) for supplying water into the rotational cylinder(10); a catchment tank(14) for moving the collected water to the wastewater treatment tank by collecting water discharged from the lower part of the injection port(10a) of the rotational cylinder(10); a discharge cone(20) installed at the inner side of the discharge port(13) of the rotational cylinder(10), formed in a conical shape, and installed in such a way that a front end part of the discharge cone(20) faces the side of the discharge port(13); a plurality of discharge vanes(21) installed on the outer surface of the discharge cone(20) and on the inner surface of the rotational cylinder(10); and a discharge mesh(22) integrally installed on the discharge vanes(21) to discharge water.
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