STRUCTURE OF SEPARATION PART OF THRESHER

摘要

PROBLEM TO BE SOLVED: To provide the structure of the separation part of a thresher capable of improving separation performance to materials to be treated discharged from a dust feed port of a threshing chamber. SOLUTION: A front grain pan 12 and a chaff sieve 13 are longitudinally installed in an oscillating and separation case 5 and difference in level is provided so that a material to be treated is dropped and fed from final end of the front grain pan 12 onto the chaff sieve 13 between the front grain pan 12 and the chaff sieve 13 and an auxiliary separating air inlet 22 is formed in the front wall part 21 below the front grain pan 12 of the oscillating and separation case 5 so that an auxiliary separating air in the backward direction is introduced from a part of the difference in level and sent to the rear on the separation face of the chaff sieve and a rear grain pan 15 receiving the material to be treated discharged from a dust feed port 31 formed in the final end of a threshing chamber 3 is provided in the oscillating and separation case 5 to prevent the auxiliary separating air from blowing through the upper direction by the rear grain pan 15.