The utility model belongs to the technical field of
impurity removal and cleaning, and particularly relates to an external secondary
impurity removal and cleaning device which comprises a
bract primary
impurity removal and cleaning mechanism and a
bract secondary impurity removal and cleaning mechanism matched with the
bract primary impurity removal and cleaning mechanism, and the
tail end of the bract primary impurity removal and cleaning mechanism is aligned to the head end of the bract secondary impurity removal and cleaning mechanism. The bract primary impurity removing and cleaning mechanism comprises a peeling rack, a primary cleaning
sieve plate is arranged at the lower end of the peeling rack, a primary impurity removing
auger is hinged to the interior of the peeling rack and arranged above the primary cleaning
sieve plate, a primary cleaning grain collecting
auger is arranged below the primary cleaning
sieve plate, and a secondary cleaning grain collecting
auger is arranged below the primary cleaning sieve plate. The bract secondary impurity removing and cleaning mechanism comprises a fixed rack, a secondary impurity removing auger is hinged to the interior of the fixed rack, a cavity where the primary cleaning grain collecting auger is located is connected with a
grain elevator, the
grain elevator is connected with a grain collecting hopper, and through primary and secondary bract impurity removing and primary and secondary grain collecting, the grain collecting hopper is connected with the grain collecting hopper. Therefore, the collection amount of the grains on the bracts is larger.