| 摘要 |
The present invention relates to an opening and closing device of a drain pipe. The opening and closing device of the drain pipe is installed at a rear of the drain pipe in order to suppress flow of sewage along the drain pipe at all times, in order to make the sewage flowing along the drain pipe flow into an inlet pipe of a sewage treatment facility. The opening and closing device of a drain pipe comprises: a board type rotation floodgate which is arranged at one rear side of the drain pipe to be orthogonal to the flow of the sewage, and is installed to be rotatable; a floating object which is combined and fixed to one end of the rotation floodgate and is formed with a material capable of being floated on the surface of the sewage; and an excessive rotation prevention unit which is installed to protrude at one side of the bottom of the drain pipe in order to prevent excessive rotation of the rotation floodgate. Therefore, the opening and closing device of the drain pipe has the effect of controlling the opening and closing of the drain pipe easily by being able to close the drain pipe automatically if the height of the sewage flowing along a sewage pipeline exceeds a fixed height. |
