Water purification device for aquaculture of artificial lake in coal mining slump area

The utility model discloses a water purification device for aquaculture of an artificial lake in a coal mining slump area. The water purification device comprises vertical screws which are arranged front and back at intervals, a plurality of water body aeration components which are arranged at intervals up and down are assembled and connected between the vertical screw rods; the water body aeration part comprises an aeration pipe which is assembled and connected between the vertical screw rods, and the aeration pipe is communicated with a plurality of aeration pieces; the aeration piece comprises an annular through pipe communicated with the aeration pipe, the annular through pipe is communicated with a plurality of annular aeration pipes, and a plurality of aeration holes are formed in the annular aeration pipes; the annular through pipe penetrates through the annular center part of the annular aeration pipe; each aeration pipe is communicated with an air inlet header pipe; and angle adjusting parts are asse