Drainage device

The utility model provides a drainage device which comprises a drainage tank, a first drainage pipe, a second drainage pipe and a permeable plate, and the top of the drainage tank is provided with a main opening used for receiving water flow; the first drainage pipe is communicated with the side wall of the drainage tank; the second drainage pipe is arranged below the first drainage pipe; a water permeable plate is arranged between the first water drainage pipe and the second water drainage pipe and divides the water drainage box into a first cavity and a second cavity in the vertical direction, the first cavity is located above the second cavity, and first water permeable holes are formed in the water permeable plate. The drainage device provided by the utility model aims to realize diversion of rainwater and sewage, and can increase the drainage amount when the rainwater amount is increased. 本实用新型提供了一种排水装置，包括排水箱、第一排水管、第二排水管和透水板，排水箱顶部具有用于承接水流的主开口；第一排水管与所述排水箱的侧壁连通；第二排水管设于所述第一排水管的下方；透水板设于所述第一排水管和所述第二排水管之间，所述透水