Device for cleaning adhering material off of sand

A device for removing adhering materials from the surfaces of sand, comprising;

• a rotary box that is horizontally rotatable for removing material from the surfaces of sand, the rotary box including a circular bottom plate, a circumferential and inclined wall extending from the circular end of the bottom plate in an upward and outward direction, and a ring portion which extends inwardly from the top of the inclined wall;
• driving means for rotating the rotary box;
• movable means having a movable surface, the movable surface being substantially parallel to and spaced a distance apart from the circumferential and inclined wall of the rotary box;
• and
• position adjusting means for moving the movable means in a direction to and away from the inclined wall.

A device for removing adhering materials from the surfaces of sand, comprising;

• a rotary box that is horizontally rotatable for removing material from the surfaces of sand, the rotary box including a circular bottom plate, a circumferential and inclined wall extending from the circular end of the bottom plate in an upward and outward direction, and a ring portion which extends inwardly from the top of the inclined wall;
• driving means for rotating the rotary box, said driving means including a motor, the load ampere of said motor being monitorable;
• movable means having a movable surface, the movable surface being substantially parallel to and spaced a distance apart from the circumferential and inclined wall of the rotary box;
• position adjusting means for moving the movable means in a direction to and away from the inclined wall;
• and
• means for adjusting said distance based on the monitored load ampere of said motor.