| 摘要 |
PROBLEM TO BE SOLVED: To provide an abrasive material quantitative supply device for accurately controlling the amount of abrasive material to be supplied to a blasting device. SOLUTION: In an abrasive material tank 10, a rotary disc 20 is provided which is horizontally rotated in the state of being embedded in the abrasive material. An opening portion at one end 11a of an abrasive material carrying passage 11 and an opening portion at one end 12a of a carrying air flow introduction passage 12 are arranged adjacent to or in contact with the single face and the other face of the rotary disc 20, respectively, to form an abrasive material takeout part 5 between both opening porions. In the rotary disc 20 on a rotational trajectory passing through the abrasive material takeout part 5, metering holes 21 passing through the thickness are provided at equal spaces. A compressive gas introduction passage is provided for blowing compressed gas to the abrasive material on the metering holes 21 outside the abrasive material takeout part 5. COPYRIGHT: (C)2009,JPO&INPIT
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