| 摘要 |
PROBLEM TO BE SOLVED: To provide a blast device capable of reducing costs in installation and maintenance, by restraining a device height, in the blast device of using a plurality of grinding, polishing, cleaning materials different in a grain size.SOLUTION: A blast processing device has a circulating passage 1 for circulating the grinding, polishing, cleaning materials, and processes a workpiece by projecting the grinding, polishing, cleaning material on the workpiece 2, and a classifier 8 for classifying the grinding,polishing, cleaning material, a plurality of storage pins 10 for storing the grinding, polishing, cleaning material classified by the classifier 8 with every different grain size and projection means 3 for projecting the grinding, polishing, cleaning material stored in the storage pin 10 on the workpiece, are arranged in the circulating passage 1 so that the grinding, polishing, cleaning material can move by freely falling up to the inlet side of the projection means 3 from the outlet side of the classifier 8, and a grinding, polishing,cleaning material amount adjusting passage 14 is also provided so as to communicate with the circulating passage 1 on this side of the classifier 8 via a storage tank 15 of the grinding, polishing, cleaning material provided outside the circulating passage 1 from the storage pin 10. |
