| 摘要 |
PROBLEM TO BE SOLVED: To easily clean an injection hole in a short time when a fluid medium invades into the injection hole of a nozzle and closes the same. SOLUTION: In a nozzle cleaning tool 1 for cleaning an air injection hole of a nozzle, there are provided a frame body 21 disposed inside the nozzle, a drill 3 capable of protrusion from the frame body 21, and movement direction conversion means 6 for converting a movement of the drill 3 in a direction different from a direction 4 where the drill 3 is inserted to a movement in a direction where the drill 3 is inserted. The movement direction conversion means 6 includes a pin 10 with one end thereof formed slantingly and with the other end 12 on which the drill 3 is extended, and a tapered member 16 for pressing the one end 11 of the pin 10. Further, there is provided in a tip end 26 of the frame body a concave portion 25 engaging a convex portion provided on an upper end of the nozzle inside the same. Further, closing of the air injection hole may be cleaned by applying higher pressure air than pressure of air for flowing the fluid medium from the inside of the nozzle.
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