| 摘要 |
A double hinge type automatic water gate with a height regulable cover plate for sewage is provided to promote the convenience of use by regulating the location of a cover plate for an outlet of a sewage conduit simply and conveniently in the dry season or the wet season. A double hinge type automatic water gate(100) with a height regulable cover plate for sewage comprises a frame(110) fixed on an outlet of a sewage conduit, a cover plate(120) put on a discharge hole of the frame to be opened by internal water pressure and not to be opened by external water pressure to discharge sewage from the sewage conduit to rivers and to prevent the counterflow of river water to a drainpipe of the sewage conduit, a pair of supports(130) projected from the frame and provided with a frame connecting hole, a pair of rotary supports(200) installed between a support and a supporting projection by primary and secondary fastening bolts to couple the cover plate to be rotatable against the frame, and a height regulating fastener composed of primary and secondary fastening bolts(270,290) to couple with primary and secondary height regulating holes(205) to regulate the height of the cover plate against the frame selectively in the dry season or the wet season.
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