| 摘要 |
PURPOSE: A manhole with an offensive odor cutoff device is provided to prevent larvae of mosquito and flies from growing in foreign material remaining inside a manhole body. CONSTITUTION: A manhole with an offensive odor cutoff device comprises a body(10), a cover(20), and an offensive odor cutoff device(30). A coating layer(13) of rubber materials is formed inside the main body. The cover is installed on the upper part of the body. The offensive odor cutoff device is installed between the body and the cover. The offensive odor cutoff device is composed of a cutoff member(31) and a float(35). The offensive odor cutoff device prevents bad smell generated inside the body from exhausting to the outside. |
