| 摘要 |
PROBLEM TO BE SOLVED: To make it possible deal with a discharge trough of a rice milling machine, etc., by providing the inside of a case body with an inclining sorting perforated plate, providing the top of this sorting perforated plate with a supply port for supplying grains and constituting this supply port of plural supply ports varying in height. SOLUTION: The case body 3 of the stone removing machine 1 is internally provided with the inclining sorting perforated plate 7. Inclining projections are disposed zigzag on the front surface of the sorting perforated plate 7. The front surface thereof is partitioned by a partition plate 8 to a stone removing part 9 and a grain lifting part 10. A cap 5 is provided with the high polished rice supply port 15 and the low polished rice supply port 16 existing on the stone removing part 9 side. These two supply ports 15 and 16 are successively disposed along the longitudinal direction of the perforated plate 7. The height of the high polished rice supply port 15 in the central part of the stone removing part 9 is defined as h1 and the height of the low polished rice supply port 16 on the side at the end lower than the supply port 15 as h2 and these heights h1 and h2 are properly selected by taking the height of the polished rice outlet trough of the rice milling machine into consideration.
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