| 摘要 |
<p>Work efficiency is improved while reducing costs even when a workpiece is subjected to abrasive blasting by changing the particle size of the abrasive material. An abrasive blasting device (10) is provided with: a plurality of storage tanks (14 to 16) which stores a plurality of types of abrasive materials categorized by different particle sizes; a projection unit (18) which projects the abrasive material supplied from the plurality of storage tanks (14 to 16); storage tank switching valves (50 to 52) which are each disposed on a projection path (46 to 48) connecting the plurality of storage tanks (14 to 16) with the projection unit (18), and select a storage tank for supplying the abrasive material to the projection unit (18) from among the plurality of storage tanks (14 to 16); a transfer unit (24) which transfers the abrasive material projected from the projection unit (18); and a sieve (26) which is connected to the transfer unit (24) via a returning path (60), separates the abrasive material transferred by means of the transfer unit (24) on the basis of the particle size categorization, and returns the abrasive material to the respective storage tank among the plurality of storage tanks (14 to 16).</p> |
