To improve recovery efficiency of abrasive in recovery of the abrasive.
A batch processing type blasting device, comprising a cabinet 1, a cyclone 2, an abrasive tank 3, a dust collector 4, and a blower 5, is capable of circulating/reusing the abrasive among the abrasive tank 3, the cabinet 1, and the cyclone 2. The cyclone 2 and the abrasive tank 3 are connected via a sand circulation valve 14 opened in the recovery of the abrasive. A dust collection adjusting valve 20 is provided for a dust collection duct 12 between the dust collector 4 and the cyclone 2, and the adjusting valve 20 is once closed before opening of the sand circulation valve 14 in the recovery of the abrasive. This can effectively prevent the abrasive from being recovered by the dust collector 4 by preventing air flow generated when opening the sand circulation valve 14 and flowing backward from the abrasive tank 3 to the cyclone 2.
SAKATA HIDENORI
FUJIMOTO KOZO
| JPH05285840A | 1993-11-02 | |||
| JPS59214563A | 1984-12-04 | |||
| JPH08155837A | 1996-06-18 |
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura