Problem to be solved: to provide a foreign matter sorting machine with improved working efficiency.Foreign matter sorting machine 10Self propelled running bodyA pick-up section 30 for picking up the soilIt is provided on the flight side of the soil picked up by the pickup sectionA plurality of sieves 411a, which are used to select foreign matter in the soil411 BThe sieve Part 41 having 411c andEquipped withThe sieve portion 41 isMultiple sieves 411a411 B413c sieve is lattice shaped.The opening size of the sieve is formed to be different.Further, the plurality of sieves 411a, 411b, and 411c are arranged in a predetermined height direction at a predetermined interval, and are set such that the opening size of the sieve becomes smaller as the direction from the upper side to the downward direction.Diagram【課題】作業効率を向上させた異物選別機を提供すること。【解決手段】異物選別機１０は、自走式の走行車体２０と、土壌を掬い上げる掬い上げ部３０と、掬い上げ部３０で掬い上げられた土壌の飛翔側に設けられ、土壌を受けて異物を選別する複数の篩４１１ａ，４１１ｂ，４１１ｃを有する篩部４１と、を備え、篩部４１は、複数の篩４１１ａ，４１１ｂ，４１１ｃの篩目を格子状とするとともに、篩目の目開き寸法が各々異なるように形成される。また、複数の篩４１１ａ，４１１ｂ，４１１ｃは、異なる高さ方向の位置に所定の間隔をおいて並んで備えられるとともに、篩目の目開き寸法が上方から下方に行くに従って小さくなるように設定される。【選択図】図１
