JPS6480478A - Control apparatus in grain sorter - Google Patents

Abstract

PURPOSE: To prevent a drastic fluctuation and to facilitate the resetting to an adequate value by finely adjusting the increasing or decreasing fluctuation of the rotating speeds of sorting cylinders on the bases of the speed change set positions of speed changing means at the time of automatic control when set speed change buttons are pushed. CONSTITUTION: The speed change position-changing commands to the speed changing means do not change drastically when the increase and decrease of the rotating speeds of the sorting cylinders 35, 36 are automatically controlled on the basis of the contact of unpolished rice with a target grain sensing sensor of grain sensing sensors SE1 to SE5 disposed at the unpolished rice receiving troughs within the sorting cylinders 35, 36. On the other hand, the set speed changing buttons 61a, 61b are pushed at the time of executing the speed change by an operator's desire, etc., by which the speed changing means are so finely controlled to accelerate or decelerate the speeds by as much as suitable extent on the basis of the speed changing positions at the time of automatic control. Consequently, the desired sorting is executed without drastically disturbing sorting control and the resetting to the reference value during the automatic control is expedited and facilitated.