SEWERAGE BEING EASY TO DREDGING HAVING OFFENSIVE ODOR PROTECTION FUNCTIONS

摘要

A drainage in which shutter is equipped is provided that the emission of bad smell to outside is blocked through outside while the opened automatic shutter is automatically shut tightly. A drainage in which shutter is equipped comprises a drain upper plate(10) of the pair it is installed in order to be in opposite directions in the side wall top end portion of the drain installed at roadside, a rotating support(30) in which a bias supporting plate(31) is formed toward the dredging unit passage(20), and an automatic shutter(40) which automatically opens and closes the dredging unit passage.