DEVICE FOR BLOCKING AN OFFENSIVE ODOR FOR A MANHOLE, CAPABLE OF PREVENTING AN INNER OFFENSIVE ODOR FROM BEING EXPOSED TO OUTSIDE

摘要

PURPOSE: A device for blocking an offensive odor for a manhole is provided to automatically open and close the device by the weight of water in the top end of a manhole.;CONSTITUTION: A device for blocking an offensive odor for a manhole comprises a body(10), a fixing block(70), a rubber film(80), and an elasticity restoring unit. The body has a central axis. The fixing block fixes the body to the inner side of a manhole. The rubber film guides flowing materials from the top of the manhole to the top of the body. The elasticity restoring unit is opened and closed by the flowing materials.;COPYRIGHT KIPO 2010