OCCLUSION PREVENTION DEVICE OF SAND LIFTING PIPE, AND SAND LIFTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an occlusion prevention device of a sand lifting pipe not allowing occlusion of the sand lifting pipe with sand, even when a large amount of sand is accumulated in a sand basin.;SOLUTION: An occlusion prevention device is a device for preventing occlusion of a sand lifting pipe 2 for sucking sand accumulated in a sand basin 1. The occlusion prevention device includes a water conduction pipe 6 arranged so as to enclose the sand lifting pipe 2, and installed in the sand basin 1.;COPYRIGHT: (C)2015,JPO&INPIT