| 摘要 |
The present invention relates to a non-powered drainage device of a manhole, and, more specifically, to a non-powered drainage device of a manhole which is provided to detect waterlogging by using a floating unit to detect water level when the inside of the manhole is flooded; to prevent the corrosion and breakdown of facilities due to waterlogging inside the manhole by operating an ejector, which is disposed in a connection pipe branched off from a manhole pipe and operated without power supply, to quickly discharge water inside the manhole; and to keep the manhole in a clean condition. The non-powered drainage device of a manhole comprises: a manhole body having a manhole pipe disposed therein, and a water collection unit formed on one side of the bottom surface; a connection pipe branched off from the manhole pipe in the manhole body and communicated with the outside; an opening and closing valve which is disposed on one side of the connection pipe and which uses the floating unit, which moves up and down according to the water level of the water collection unit disposed on one side of the connection pipe, to open and close a water flow unit of the connection unit; an inlet pipe which is vertically disposed on the lower part of the water collection unit and which has an upper end connected to the ejector for inhaling water from the water collection unit; and the ejector disposed on the rear end of the opening and closing valve of the connection pipe to discharge water through a discharge unit of the connection pipe to the outside. |
