PURPOSE: To reduce the noise and to decrease the abrasion of the bearing by linking the opening operation of a change-over body between a processing material storage chamber and a conveying chamber, and the driving of a conveyer unit, in a captioned device for grains and the like.

CONSTITUTION: When a processing material is stored in a specific amount or more in a processing material storage chamber 2 of a processing tank 8, a detector 1 is turned ON. When the operator turns a converting lever 15 to the position A in such a condition, a change-over detector 6 is turned ON. By the change-over detector 6 ON, an electric motor 10 is driven, and a forcible conveyer unit 3 is rotated through a wheel body 11, an endless body 12, and a wheel body 9. At the same time, a change-over body 5 is moved to the right side, the conveying material is dropped from the storage chamber 2 to a conveying chamber 4, and conveyed forcibly. In such a composition, the noise and the abrasion can be decreased.