Screening equipment and screening method based on biological fermentation feed production

The invention relates to the technical field of screening equipment, and discloses screening equipment and a screening method based on biological fermentation feed production. Through the arrangement of the slicking mechanism, when raw materials are fed to the equipment shell by the feeding unit to be sieved, a rotating rotary disc enables a swing arm to drive a sector gear to swing back and forth through a cylinder, so that a sliding rod meshed with the sector gear through a rack is driven to do reciprocating motion on the equipment shell; the raw materials on the equipment shell are scraped to be flat through the sliding rods, the dispersion uniformity of the raw materials on the surface of the screen is improved, meanwhile, in the reciprocating motion process of the scraping plates, the scraping plates crush the raw materials which are agglomerated into a cluster, the phenomenon that the raw materials which are agglomerated into a cluster block the screen is avoided, and therefore the screening effect is i