| 摘要 |
PURPOSE: A manhole box is provided to facilitate the connection of water pipes by preventing the accumulating of sludge by using a water flow guiding device. CONSTITUTION: A manhole box comprises a sewage feeding port(11), a body(10), a blocking block(20) and a water flow guiding device. A sewage supply pipe(2) and sewage exhaust pipe(4) are connected on the sewage supply opening. A sewage outlet(12) is formed on the body. The blocking block is convexly formed on a center area so that a flow path(20a) can be formed in the inner bottom edge of the body. The water flow guiding device is located on the blocking block, the sewage supply pipe and the sewage exhaust pipe. The water flow guiding device performs the water flow guide and reverses waterway. |
