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1, grinding sand roller machine structure, which is composed of a frame and air pumping mechanism, the rice milling room is fixed on the frame, the feeding device is installed in the upper part of the rice milling room, the bran collection hopper is installed in the lower part of the rice milling room.

2, the main shaft of the rice milling room is a hollow shaft, the air inlet is located at both ends of the hollow shaft, the rice nozzle is equipped with a cleaning cold rice machine device, the inclined guide plate is installed in the rice nozzle, the lower part of the guide plate is equipped with a cleaning cold rice device. The characteristics of the grinding sand rice mill are lower pressure in the rice mill chamber and higher linear speed of the rice roller.

3, because the grinding only exists between the rice roller and the brown rice, the brown rice and the bran discharge cylinder, coupled with the negative pressure bidirectional multi-channel air intake, the rice breaking rate in the rice milling process is low. During the working process, the brown rice enters the end of the rice milling chamber by the feed hopper through the flow regulating mechanism, and is pushed into the rice milling chamber by the rotating screw propeller. When the brown rice is filled with the rice milling chamber, the propulsion spiral continues to push the brown rice into the rice.

4, the pressure in the rice milling room continues to increase, when the pressure of the brown rice group is large enough to overcome the resistance of the pressure door of the discharge port, the discharge port is opened, the rice grain group is discharged from the rice milling room, the brown rice is imported from the rice machine to the export, and the skin is gradually peeled off and becomes the rice bran, which is discharged through the hole of the bran discharge cylinder, and the rice milling is finally completed. The discharge port is equipped with a cooling rice cleaning device to further cool the rice grains. 1. Before the brown rice enters the hopper, check whether there are metal objects and stones to avoid damaging the grinding wheel. 2. After grinding white, pull out the front rotating block and clean up the rice sugar in the remaining grinding white room so as not to affect the accuracy of the sample. 3, white grinding accuracy needs to be determined by the variety of brown rice to determine the number of samples and white grinding time, the number of low-precision samples 17-18g is appropriate, white grinding time is slightly shorter; The number of high-precision samples is 20g, and the grinding time is slightly longer. 4, when the machine is used for a long time and grinding too high water brown rice, rice bran bonded grinding wheel affects the whiteness, the board can be removed from the wheel, with a wire brush to brush the bran powder, as the hui can continue to use.

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