| 摘要 |
PURPOSE:To completely prevent after-dripping of an injection nozzle, by connecting a vacuum pump through an automatic valve to the injection nozzle. CONSTITUTION:A vacuum pump 18 is connected through an automatic valve 17 to an injection nozzle 12. After completion of injection of a fixed amount of oil by the injection nozzle 12, automatic valves 6 and 11 are closed, and an air cylinder 13 is raised, while the automatic valve 17 being opened, so as to conduct suction under vacuum. Thus, after-drip remaining in the injection nozzle 12 is sucked together with air, and oil mist is removed by a mist separator 19 thereby to be emitted to the atmosphere. Accordingly, after-dripping of the injection nozzle 12 may be completely prevented. |
