| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous supplying method of a grinding and cleaning material capable of being continuously jetted in a direct pressure type blasting device. SOLUTION: In this direct pressure type blasting device, a grinding and cleaning material tank 2 is constituted of three steps of a recovery tank 21, a spare tank 22 and a grinding and cleaning material force-feeding tank 23. In a closed state in a space between the spare tank 22 and the grinding and cleaning material force-feeding tank 23, the grinding and cleaning material recovered by communicating in a space between the recovery tank 21 and the spare tank 22 is introduced into the spare tank 22. A space between the recovery tank 21 and the spare tank 22 is closed, and pressure in the spare tank 22 is increased to the same pressure as that in the grinding and cleaning material force-feeding tank 23. Subsequently, a space between the spare tank 22 and the grinding and cleaning material force-feeding tank 23 is communicated, and the grinding and cleaning material is introduced into the grinding and cleaning material force-feeding tank 23. As a result, pressure drop in the grinding and cleaning material force-feeding tank 23 in a pressurized state is prevented when jetting the grinding and cleaning material to enable the continuous jetting. COPYRIGHT: (C)2007,JPO&INPIT
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