| 摘要 |
PROBLEM TO BE SOLVED: To provide a sand lifting system which is lower in cost and driving force as compared to the conventional jet pump system, is stronger to burying and is easier to releasing of blocking as compared to the conventional sand pump system. SOLUTION: The system is provided with a suction pipe 1 to suck sand and a sand pressure-feeding nozzle 2 to generate negative pressure by supplying high pressure water to the suction pipe 1 is installed in a sand sedimentation pond S and a discharge side of the suction pipe 1 is connected to the suction side of a land sand pump 3 and the high pressure water is supplied from a sand collecting water pump 4 disposed in a pump well S1 etc., to the sand pressure-feeding nozzle 2. COPYRIGHT: (C)2006,JPO&NCIPI
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