| 摘要 |
PROBLEM TO BE SOLVED: To provide a sand blasting nozzle device continuously usable for many hours while protecting a holder. SOLUTION: This sand blasting nozzle device is provided with: a nozzle 10 for blasting blast grains from the tip; the holder 12 with the nozzle 10 detachably connected to the tip side and with a hose 16 for force-feeding the blast grains, connected to the rear end side; and a buffer member 14 mounted into a cylindrical hole of the holder 12, formed with a through hole 24 bored to communicate with a nozzle hole 34 and a hose hole, and arranged to be held by the base part of the nozzle 10 and the tip part of a hose 16 to lead the blast grains directly into the nozzle hole 34 through the through hole 24 while receiving the blast grains force-fed from the hose 16. The collision of the blast grains against the internal wall of the holder is thereby prevented to protect the holder, thus improving the durability of the holder. COPYRIGHT: (C)2004,JPO
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