Roughing device

Abstract

To provide a coarse sorting device that can be installed in various sizes while keeping costs down. [Solution] The coarse sorting device 10 removes impurities from the grain by passing the grain through the grain storage section 20, the air separation section 30, and the oscillating sieve section 40 in that order. The coarse sorting device 10 has a first unit 10A that forms the grain storage section 20 and a second unit 10B that forms the air separation section 30 and the oscillating sieve section 40, and the first unit 10A and the second unit 10B are separable. The second unit 10B is equipped with a lead roller 31 that adjusts the amount of grain supplied from the grain storage section 20 to the air separation section 30.

Claims

1. A coarse sorting device that removes impurities from grain by passing the grain through a grain storage section, an air separation section, and an oscillating sieve section in that order, The first unit forming the grain storage section, It has a second unit that forms the wind selection section and the oscillating sieve section, The first unit and the second unit are separable, The coarse sorting apparatus is characterized in that the second unit is equipped with a lead roller for adjusting the amount of grain supplied from the grain storage section to the wind separation section.

2. A rough sorting apparatus according to claim 1, Multiple second units are connected to one first unit. The first unit is a rough sorting device characterized by distributing and supplying received grain to a plurality of second units.

3. A rough sorting apparatus according to claim 1, The second unit is equipped with a supply trough that can be opened and closed around a pivot axis, through which grain is supplied from the grain storage section. The lead roller is arranged inside the supply trough so as to have a rotation axis parallel to the rotation axis, and is detachable from the supply trough in a direction parallel to the rotation axis, characterized in that it is a rough sorting device.

4. A rough sorting apparatus according to claim 3, The drive unit for the lead roller is attached to the supply trough. A rough sorting device characterized in that, when the supply trough is rotated, the drive unit rotates integrally with the supply trough.

5. A rough sorting apparatus according to claim 3, The aforementioned air selection section has a suction fan that generates airflow, The coarse sorting apparatus is characterized in that the suction fan is located on the opposite side of the supply trough in the second unit.

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