| 摘要 |
A water spray device for an automatic cleaning device for a water service tunnel is provided to save labor force and cost by effectively cleaning an inner wall of the water service tunnel using the water spray device that moves along the inner wall of the water service tunnel. A water spray device used for an automatic cleaning device for a water service tunnel comprises a case(100) having a movable frame(200), a first disc plate coupled to a front surface of the case, a second disc plate(400) coupled to a front surface of the first disc, a length adjustment frame(500) detachably attached to a front surface of the second disc plate, a water spray device(600) for cleaning an inner wall of a water service tunnel, and a rotating device installed in the case. The rotating device is connected to the water spray device by a water feeding pipe(910), an air pipe(920), and a suction pipe(930) which are connected to each other.
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