Multifunctional lotus nut screening machine

The invention provides a lotus nut screening machine comprising a rack; a lotus nut shake-off roller arranged on the rack and comprising a sieve barrel and a housing arranged on the periphery of the sieve barrel; a first lotus nut discharge hopper and a second lotus nut outlet hopper; a driving device comprising a drive motor and a driving control circuit; and a vibration device comprising a vibration motor and a vibration control circuit; wherein, an inlet of one end of the sieve barrel is provided with a feed hopper, and an outlet of other end of the sieve barrel is provided with a discharge hopper; the wall of the round sieve barrel is provided with helical push blades, and a lotus seed stirring plate is installed between the adjacent helical push blades. By this way, lotus nuts of massive lotus seeds with nuts removed or open edges can be shaken off, screened and dedusted continuously and efficiently; the lotus seeds are shaken off by combining the helical push blades and the lotus stirring plates, so that the separation rate of the lotus seeds from the lotus nuts is improved greatly, and lotus seed fragments, residual lotus nuts and dust mixed in the lotus seeds can be screened and separated effectively.