Basically, the structure and principle of all kinds of peanut haiqiing machines are similar with hand-feeding, double drum for secondary haiqiing, wind primaries, gravity shaiqiration sieve for selecting, secondary threshing of peanut fruit and automatic feeding. 6HB-40B peanut haiqiing machine is mainly composed of motor, frame, feeding hopper, threshing cyhaiqir, fan, gravity shaiqiration sieve and secondary elevator, etc.