| 摘要 |
An abrasive blasting device comprising means ( 15 ) for entraining abrasive particles in a gas flow and propelling them against a surface to be blasted and means ( 16, 25 ) for drawing spent particles and debris away from said surface using a vacuum generated internally using the compressed gas source that propels the abrasive particles. The vacuum is preferably generated using a vacuum nozzle that directs compressed air away from the surface to be blasted into a conical chamber tapering to an exhaust port. The device also incorporates an easily replaceable blasting nozzle unit ( 16 ) for quick maintenance and may incorporate a hopper ( 50 ) for recycling the abrasive particles.
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