1. The structure of the grinding roller rice mill consists of a frame and an exhaust fan. The rice milling chamber is fixed on the frame, the feeding device is installed at the upper part of the rice milling chamber, and the chaff collecting hopper is installed at the lower part of the rice milling chamber.

2. The main shaft in the rice milling chamber is a hollow shaft with air inlets at both ends, a rice cleaning and cooling device at the rice outlet, an inclined guide plate at the rice outlet, and a rice cleaning and cooling device at the lower part of the guide plate. The grinding roller rice mill is characterized by low pressure in the rice milling chamber and high linear speed of the rice milling roller.

3. Because the rice milling only exists between the rice milling roller and brown rice, and between the brown rice and the chaff outlet pipe, and the negative pressure bidirectional multi-channel air intake, the rice crushing rate is low in the rice milling process. During the working process, brown rice enters the end of the rice milling chamber from 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 in the rice milling chamber, the pushing screw continues to push the brown rice.

4. The pressure in the rice milling room is increasing. When the pressure of brown rice balls is large enough to overcome the resistance of the pressure door at the discharge port, the discharge port is opened and the rice grains are discharged from the rice milling chamber. Brown rice has been milled from the entrance to the exit of the rice mill, and the cortex is gradually stripped into rice bran, which is discharged through the hole of the rice bran barrel, and finally the rice milling is completed. A rice cleaning and cooling device is arranged at the discharge port to further cool the rice grains.

Extended data:

Precautions:

1. Before brown rice enters the hopper, check whether there are metal objects and stones to avoid damaging the grinding wheel.

2. Pull out the front rotating block after whitening, and clean up the rice sugar in the residual whitening room, so as not to affect the accuracy of the sample.

3. The accuracy of rice milling depends on the variety of brown rice, and the number of samples and the milling time should be determined. The number of samples with low accuracy is 17- 18g, and the milling time is slightly shorter. The number of high-precision samples is 20g, and the whitening time is slightly longer.

4. When the machine has been used for a long time and the grinding wheel with rice bran affects the fine whiteness, you can remove the grinding wheel with a wrench, brush off the bran powder with a wire brush and put it back as it is.

References:

Baidu encyclopedia-rice milling machine