| 摘要 |
PROBLEM TO BE SOLVED: To feed the fixed quantity of fine abrasive cleaning material to an air carrying passage. SOLUTION: In this blasting device equipped with an air source, air carrying passage to be connected with the air source, a nozzle to be provided at the tip end of the air carrying passage, and with a abrasive cleaning material feeding means feeding abrasive cleaning material to an air flow flowing in the air carrying passage, and the abrasive cleaning material feeding means is equipped with an abrasive cleaning material storing container, a passage 32 connecting the abrasive cleaning material storing container with the air carrying passage, and at least, with one roller 71 which is set for blocking the passage 32 at the halfway of the passage 32 in such a way that it can be rotated, and has its outer circumference formed out of a soft member 71a.
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