| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water area cleaner with its water sending machine easily moved to an appropriate height as the depth of water or the height of the water bottom is changed. SOLUTION: The water area cleaner 2 is composed of a pump 3 as a means for introducing water from a water area 1, a water sending machine 7 as a means for sending the water introduced by the pump 3 arranged in the water in the area 1, a strut 8 erected in the area 1 and connected to the machine 7, and a winch 5 as a means for vertically moving the machine 7 in the water along the strut 8.</p> |
