| 摘要 |
PROBLEM TO BE SOLVED: To provide a sand suction mechanism for a sand removal facility attaining cost reduction of a vertical moving mechanism for a suction pipe and stabilization and miniaturization of a pontoon in sand removal in the sand suction mechanism for the sand removal facility for vertically moving the suction pipe by a lifting device provided at the pontoon, to allow the tip part of the suction pipe to contact and separate from deposited sand, and generating pulsating suction flow to discharge deposited sand. SOLUTION: The sand suction mechanism for the sand removal facility 1 moves the suction pipe 4 vertically by the lifting device 2 provided at the pontoon A, to enable the tip part of the suction pipe 4 to contact and separate from the deposited sand G, and generates the pulsating suction flow to discharge the deposited sand G. In this case, the inner periphery or outer periphery of the tip part of the suction pipe 4 is provided with a short pipe 5 to form a double pipe structure, and the short pipe 5 is vertically moved to generate the pulsating suction flow to discharge the deposited sand G. COPYRIGHT: (C)2006,JPO&NCIPI
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