| 摘要 |
The present invention relates to a blasting apparatus (10) for blasting rock drill bits comprising a blast nozzle (20) for conducting a pressurized blast medium towards a rock drill bit, said nozzle having a direction (L), a fixture (17,21) for the location and rotation of the rock drill bit a nd a first chamber (14), which surrounds blast nozzle (20) and at least a part of the fixture (21), as well as means (15,23,25) for the forwarding of blast medium . A second chamber (26) is mounted in the first chamber (14). The second chamber (26) is arranged to, at least partially enclose, the fixture (17,21) . The second chamber (26) is movable in said direction (L). The second chamber (26 ) has an opening (31) located between the fixture (17,21) and the blast nozzle (20).
|
