Anti-floating drainage device for pressure relief well of basement

The invention relates to the field of anti-floating drainage, and discloses a basement pressure relief well anti-floating drainage device which comprises a filter pipe body, a top pipe is arranged at the top end of the filter pipe body, a sleeve is connected to the surface of the filter pipe body in a sleeving mode, and a shaft rod is arranged in the filter pipe body. The left end and the right end of the shaft rod are rotationally connected with connecting rods through embedded bearings, the two sides of the surface of the shaft rod are evenly sleeved with fan blades, the bottom ends of the connecting rods are fixedly connected with supporting blocks, the bottom ends of the supporting blocks are fixedly connected with the inner wall of a sleeve, and the surface of the shaft rod is sleeved with a protective shell; the top end of the protective shell is fixedly connected with a mounting rod, the top end of the mounting rod is fixedly connected with the inner wall of the filter pipe main body, the device can di