| 摘要 |
PROBLEM TO BE SOLVED: To enable a worker to easily charge grains in a raw material charging tank by making arranging height of the floor surface on the side of a service chamber higher than that of the floor surface on the side of a machine chamber. SOLUTION: A grain bag placing stand 2 and a raw material charging tank 5 are respectively arranged over the range from an operation chamber to a machine chamber, and a rotary valve is provided to the lower part of the raw material charging tank 5 to be allowed to communicate with the hopper part of a lifter 6 for a stone-removing device 7 on the delivery side thereof and the discharge port of the lifter 6 for the stone removing device is allowed to face to the charging port of the stone removing device 7. The arranging height of the floor surface 21a of a building on the side of a service chamber is made higher than that of the floor surface 21b on the side of the machine chamber by h1 and the height from the floor surface 21a on the side of the sevice chamber to the charging port 5a of the raw material charging tank 5 is set to h2 and the relative arranging height of the charging port 5a of the raw material charging tank 5 is made low.
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