| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for sucking a sediment left in the bottom of a well pipe.SOLUTION: A high penstock 2 is mounted along a lift pipe 1 having an opening in the leading end, and the high penstock 2 is extended downward from the leading end of the lift pipe to arrange the leading end in the center part of the lift pipe and to bear a nozzle body 3 having nozzles 7, 7.., and 8 rotatably. Moreover, an air pipe 14 is connected to the midway of the lift pipe 1, and compressed air is fed from an air compressor to the lift pipe 1 so that the earth is sucked together with water from the opening 4 at the leading end of the lift pipe and up to the ground. |
