| 摘要 |
PROBLEM TO BE SOLVED: To perform blasting work efficiently by taking pulverised grains of shells as a blast cleaning material, stabilizing quantitative supply of the the blast cleaning material into an injection nozzle to prevent jamming of the blast cleaning material and an insufficient jet of the material in the injection nozzle and secure favorable injection state of the blast cleaning material. SOLUTION: In the injection nozzle 2 for injecting a blast cleaning material, an injection pipe part 3 for injecting the blast cleaning material and a supply pipe part 4 for supplying the blast cleaning material are respectively arranged, a tank 5 for storing the blast cleaning material is disposed on the downstream side of the supply pipe part, and a rotary feeder 6 for quantitatively supplying the blast cleaning material in the tank to the supply pipe part is provided between the tank and the supply pipe part. COPYRIGHT: (C)2007,JPO&INPIT
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