| 摘要 |
A drainage trap of a catch basin is provided to offer pleasant environment by preventing the vertical movement of air to keep an offensive odor not to come up and cleaning simply with a small amount of water. A drainage trap(1), for draining off the filth and rainwater flew inward through a grating of a catch basin at two sides of a road, comprises a frame(2) installed to a catch basin, a collecting well(3) composed of a partition(4) to contain water and a stopper(7) to open and close a drain hole(6), a waterway(14) formed between the partition and the frame, a guide body(8) formed to form a space(13) between an internal wall of the collecting well fixed to the frame and a diaphragm(9), a collecting net(10) collecting the impurities guided by the guide body, and a chemical input device(12) having chemicals to be easily soluble in water contained in the collecting well. |
