| 摘要 |
PURPOSE: A water purification system for a drilling machine is provided to effectively separate excavation soil transferred with water flowing out to the ground and separate soil, water gravel, and rock pieces. CONSTITUTION: A water purification system(20) for a drilling machine comprises a case, a separator, and a water spray nozzle. The case comprises a main body and a chute. The main body has a joint and an internal space. The joint is coupled with a guide tube(7) installed in an underground hole. The chute is installed on the outer surface of the main body and guides water discharged through a guide pipe. The separator connects to the chute and separates oil, water, and excavated soil. The water spray nozzle is installed inside the case and sprays water.
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