Differential circulating type corn long (square) and round seed kernel separating and selecting machine

The invention discloses selecting equipment for separating corn seeds according to kernel shapes and selecting machine and relates to the field of agricultural machinery. The equipment comprises a separating belt, a support and the like. According to the structure, the separating belt is a wide one made of rubber material with V-shaped projections which are arrayed sequentially in a staggered manner and sleeves drive and driven rolling drums, two ends of the separating belt is sewed in the head-tail direction of the V shape, and a circulating separating belt rotating circularly is obtained and is fixed to the bevel of the right-angle support; when corn seeds of a feed hopper fall to the high end of the separating belt through the outlet, the corn seeds roll or be static on the surface of the separating belt and performs opposite movements on the separating belt driven by a variable speed motor upwardly, and the differential condition that the speed of round seeds rolling on the separating belt downwardly > the upward transmission speed of the separating belt > the falling speed of the long (square) seeds on the separating belt is met, and the long (square) seeds and the round seeds can be separated. The equipment is simple in structure, convenient to use, low in manufacture cost and wide in application range and has fine advantages.