| 摘要 |
PROBLEM TO BE SOLVED: To provide a generated mud soil suction device capable of continuously sucking mud water and mud soil irrespective of clay ball in a suction device for excess liquid discharged when digging. SOLUTION: A suction port 24 is set upward, and an inner side filter 22 is fixed above it. A ribbon screw 23 rotated and driven by a motor M to convey a clay ball and having scraper action is provided at its outer periphery. An outer side filter 21 having larger mesh than that of the inner side filter 22 is fixed to an outer side of the ribbon screw 23. COPYRIGHT: (C)2004,JPO
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