| 摘要 |
PURPOSE: A waterway opening or closing device is provided to easily open a water gate and to prevent the water gate from being lifted by a back flow. CONSTITUTION: A waterway opening or closing device controls water quantity into a waterway with a water gate(10). The water gate is opened or is closed vertically by being installed in a suspended type at an outer surface of a discharge port with a hinge structure. The water gate is installed at an accommodating groove(60) of an external wall. The water gate includes a water tank(50), a water inlet unit(52), and a water outlet unit(54). |
