| 摘要 |
PROBLEM TO BE SOLVED: To provide a blast device using a DD motor attached to an outer wall surface of a dusty blast chamber as a driving source of a nozzle.SOLUTION: A blast device 10 includes a nozzle holder 30 which is inserted into a through-hole 20b of a DD motor 20 mounted on an outer wall surface of a blast chamber 14, rotates according to rotation of a rotary drive section 20e and includes a projection material passage 30a passing through along a major axis. In the nozzle holder 30, a rear end of a first nozzle 24 is inserted into a nozzle insertion section 30b projecting from one end side of a DD motor 20, and a supply hose 26 is connected to a connection tool mounting section 30d projecting from the other end side of the DD motor 20 at the other end of the nozzle holder 30 via a hose joint 28. In the blast device 10, a lid body 38 is attached to one end side of a cylindrical casing 20a including the rotary drive section 20e, and a seal socket 48 internally inserted with a seal member 40b is externally inserted into a connection portion between the connection tool mounting section 30d and the hose joint 28. |
