Blind drainage pipe

The utility model discloses a blind drainage pipe which comprises a guide pipe, a flange and a gate valve, and is characterized by further comprising a filter system which comprises a filter water pipe, a stainless steel mesh, grading gravel and baffles, wherein the baffles are fixed at two ends of the filter water pipe, and the filter water pipe and the baffles are provided with filter holes; a circle of stainless steel mesh is arranged on the inner wall of the filter water pipe which is internally filled with the grading gravel; the filter holes are arranged in a staggered manner at equal intervals; the baffles are stainless steel plates and welded at two end parts of the filer water pipe; the baffle at one end of the filer water pipe is welded with the guide pipe; and the gate valve is connected with the guide pipe through a flange piece. The blind drainage pipe can control the flow rate of ground water according to the flow of a water pump in drainage, can effectively improve the discharging effect of a basement, has a simple structure and simple raw materials, and is economical and practical.