| 摘要 |
An earthen hole drilling device having an elongated tube with first and second ends where a source of vacuum pressure is connected to the first end and shroud is connected to the second end. A waterline is connected to a source of pressurized water at one end and extends into an interior of the shroud through an opening where the line is connected to a nozzle that is angled at 45°. The shroud additionally has at least one opening that allows air induction/conduction through the shroud in order to dislodge material that accumulates within the shroud. |
