Screening machine for preparing activating enzyme compound fertilizer

The utility model relates to the technical field of chemical fertilizer preparation, and discloses a screening machine for activated enzyme compound fertilizer preparation, which comprises a workbench, the top end of the workbench is fixedly connected with a preparation bin, the inside of the top end of the preparation bin is fixedly connected with a top cover, and the middle part of the bottom end of the top cover is fixedly connected with a motor. A rotating rod is fixedly connected to the output end of the motor, a plurality of stirring rollers are fixedly connected to the outer wall of the rotating rod, a butt joint column is arranged in the middle of the bottom end of the rotating rod, first connecting plates are fixedly connected to the four corners of the bottom end of the butt joint column, and first limiting columns are fixedly connected to the top ends of the first connecting plates; the outer wall of the sliding column is slidably connected with a first spring, and the bottom of the rotating rod is