This relates to devise the bean thresher, did not particularly during threshing threshing beans beanstalk beans on rampage and discharged without having to re-haesoham repeated threshing, threshing and then be able to filter out the remaining beans that have remained completely inside the thresher and, again, no foreign material such as stones piled stiffness while stuck inside the machine load and can be prevented from causing a malfunction is improved. ; intended to achieve the above object, the present geombul outlet (B2) make-up to the top of the inner peripheral surface and the serrated protrusion of the unevenness threshing chamber (B) 11 selecting a stagnation plate (1) of a predetermined height with a network (B0) and also attached to the inner circumferential surface, a lower portion of the discharging screw (D2) which can be attached to the side walls from the main body (A) screw guide plate (2) but adhered to, the discharge screw (D2) to form a circumferential surface of the bottom portion to the reinforcing portion 20 that is a polygon one end by cutting a part of the hinge 31, the coupling ring tartan 32 and the locking step (33) configured to open and close the door (3) provided, and the opening and closing door 3, the lowermost circumferential surface which provides a bean thresher hayeoseo configuration number of foreign matter falling ball (30), which is a size smaller than Tic.
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