| 摘要 |
A sandblasting device comprises a first and a second conduit, generally parallel, which are used for the conveyance of a pressurized fluid and of sand respectively. Their outlet ends are connected to a terminal support on which is mounted a removable and orientable nozzle. This nozzle is structured and positioned in such a way as to direct the sand, through a fan-shaped jet of the pressurized fluid coming from the first conduit, on to the surface to be cleaned. The sand stream coming out of the second conduit assumes a transverse lenticular cross-section.
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