This utility model relates to the field of bio-
organic fertilizer technology and discloses a screening device for bio-
organic fertilizer, including a shell, a filter
assembly in the middle of the shell, and a
discharge port at the bottom of the shell. The screening device for bio-
organic fertilizer of this utility model uses an
auger to push organic
fertilizer to the left and a turning plate to turn the organic
fertilizer, thereby screening it through a screening cylinder. Because the screening cylinder is tilted and higher on the left than the right, the bio-organic
fertilizer stays inside the screening cylinder for a longer time, improving the
screening effect. An
air pump compresses air filtered by an
air filter and delivers it into the output
pipe through a three-way
pipe, finally spraying it out from a
nozzle to backflush the rotating screening cylinder, thereby blowing out organic fertilizer stuck in the screening cylinder holes. Cleaning brushes clean the outside of the screening cylinder to prevent the screen holes from becoming clogged, improving production efficiency.