Biological organic fertilizer screening machine is a kind of equipment used for separating the finished organic fertilizer products from the unqualified ones. It is commonly used in the biological organic fertilizer production line to ensure the quality of the final products. The screening machine can effectively remove the impurities and large particles from the finished organic fertilizer products, making the products more refined and uniform in size. This equipment usually adopts a drum screening structure, and the mesh size of the screen can be customized according to the different needs of the production process.