Organic fertilizer production screening device

The organic fertilizer production screening device comprises a fine material winnowing assembly, a coarse material screening assembly and a recycling assembly, the fine material winnowing assembly and the coarse material screening assembly are connected with the recycling assembly, and the fine material winnowing assembly comprises a feeding hopper, a first winnowing pipe, a second winnowing pipe, a first fan and a second pressure fan. The coarse material screening assembly comprises a spiral feeding screening pipe and a driving motor, the spiral feeding screening pipe comprises a screening pipe shell and a spiral feeding piece, and the spiral feeding piece is installed in the screening pipe shell through a rotating shaft. According to the fine material winnowing device for the organic fertilizer, the organic fertilizer can be finely divided, the fine dividing degree is high, the product grading quality can be improved, and the product competitiveness can be improved easily, and dust and chippings in the orga