The utility model relates to a granule material screening unloader, involving vibrations sieve and lower silo, the notch department of lower silo is provided with magnetic separation agency, magneticseparation agency includes a magnetic shelf and the 2nd magnetic shelf to make the metallic impurity in the material adsorbed on magnetic shelf through the secondary screening, the shale shaker is including sieving cage, primary screen, secondary screen cloth and motor, and the mesh diameter of secondary screen cloth is less than primary screen's mesh diameter to make resin raw material select thelarge granule when primary screen, select even granule through the secondary screen cloth of below again. The utility model discloses it is rational in infrastructure, design benefit, screening granule material is thorough, and sort out in the raw materials thoughtlessly some metallic impurity effective the branch, improves product appearance, increases enterprise benefit, and it is not good to solve present sieving mechanism primary screening effect, influences the outward appearance of product, seriously influences technical problem such as product quality, to prior art, is once great technical innovation, has fine market prospect and metallic impurity 0.