Cycling type shell lotus classifying sieve for automatic shell lotus processing equipment

The invention discloses a cycling type shell lotus classifying sieve for automatic shell lotus processing equipment. The cycling type shell lotus classifying sieve for the automatic shell lotus processing equipment comprises a first machine frame; a plurality of first sieving units are erected on the first machine frame from top to bottom; each first sieving unit comprises a first rectangular frame; each first rectangular frame is communicated with a first discharging opening; a first sieve plate is fixed to the interior of each first rectangular frame; a first backflow plate is fixed below each first sieve plate; first sieve pores of the first sieve plates from the top to the bottom become small in sequence; each first rectangular frame is connected with a first sleeve ring through a first connecting rod; each first sleeve ring is arranged on a first crank shaft in a sleeving manner; each first crank shaft is connected with a first motor. According to the cycling type shell lotus classifying sieve for the au