| 摘要 |
PURPOSE: A trenched drainage apparatus with a checking function is provided to facilitate the checking and cleaning of the inside of a water collecting pipe through hands or tools by removing an odor counter current preventive tool or a checking tool. CONSTITUTION: A trenched drainage apparatus with a checking function comprises the followings. A hole to which an adult's hand is able to enter is formed in the trenched drainage pipe(300). A connecting part of an odor counter current preventive tool(600) is formed inside an upper plate connecting part(310) of the lower surface of the trenched drainage pipe. The outer tub projection is formed at the lower end of the connecting part of the odor counter current preventive tool. The outer tub of the odor counter current preventive tool comprises an outer tub body(611), an outer tub extension part(612), and an inner tub projection(613). The outer tub body is inserted into the water collecting pipe body(100). The outer tub extension part is extended and formed from the upper end of the outer tub body in the horizontal direction. The outer tub extension part has external diameter like the inside diameter of the connecting part of the odor counter current preventive tool. |
