| 摘要 |
PROBLEM TO BE SOLVED: To provide a suction nozzle which opens and closes a passage and has a simple structure.SOLUTION: A suction nozzle 3 includes: a nozzle body 23; a valve body 25 provided in the nozzle body 23. An inner surface of the nozzle body 23 includes a taper surface 23bt where a diameter is reduced toward a tip side of the nozzle body 23. The valve body 25 includes a conical surface 25a where a diameter is reduced toward the tip side of the nozzle body 23. The conical surface 25a may move between an open position which faces the taper surface 23bt across a gap S1 and a closed position where the conical surface 25a contacts with the taper surface 23bt. |
