How to operate a small household rice mill? What are the main reasons that affect its effect?

First of all, before the brown rice enters the hopper, check if there are any metal objects or stones to avoid damaging the grinding wheel.

Second, after whitening, pull out the rotating block at the front and clean up any remaining rice sugar in the whitening chamber to avoid affecting the accuracy of the sample.

Thirdly, the milling accuracy of small household rice mills should be determined by the variety of brown rice. For low-precision samples, the sample quantity and milling time should be 17-18g, and the milling time should be relatively short. The quantity of high-precision samples is 20g, and the milling time is slightly longer.

Fourth, when the machine has been in use for a long time and is grinding high-moisture brown rice, if the rice bran adheres to the grinding wheel and affects the fineness and whiteness, you can remove the grinding wheel with a wrench, brush off the bran with a wire brush, and then put it back in its original state for use.

What are the main reasons that affect the rice milling effect of small household rice mills?

The small household rice mill is one of the important mechanical equipment in grain processing. According to different processing techniques, small household rice mills can be divided into two types: small household rice mills and coarse flour mills. The difference between the two lies in that the rice white rice machine (commonly known as the agricultural rice machine) is a small household rice milling machine with iron rollers or iron-reinforced sand rollers, which directly grinds rice into white rice. This machine has a simple structure, is easy to operate and maintain, and is low in price, making it very suitable for rural areas. Brown rice threshers, usually small household rice milling machines with sand rollers, are only suitable for processing clean brown rice with the husks removed. It needs to be combined with equipment such as dehullers for rice processing, and the investment scale is relatively large. It is mainly used in grain processing enterprises.

There are many factors that affect the rice milling effect of small household rice mills, and it is often the result of the combined effect of multiple factors. To sum up, the main factors include raw grain factors, human factors, objective factors, etc. Apart from the factors of the machine itself, the raw grain has a significant impact on the test results.

The selection of raw grains is an important step in the inspection or testing of small household rice mills. The quality of the raw grains will directly affect the test results, especially the technical parameters of the finished rice. Therefore, in grain purchasing, there are strict inspection standards for raw grains. The inspection items mainly include grain shape: The grain shape of rice is the surface shape of the grain. According to its length-to-width ratio, there are long grain shapes and round grain shapes (tending to be round). The rate of "waist burst" : "Waist burst" refers to the presence of one or more crisscrossing cracks in brown rice grains. Moisture content: The moisture content of rice directly affects the working condition of small household rice mills. Its condition is related to the toughness of the rice husk, the binding force between the brown rice bran and the endosperm, the intensity of endosperm damage, the difficulty of grinding, and the timely discharge of rice flour. Keratinization rate: The keratinization rate of rice endosperm is high (commonly known as glassy), with a dense structure and high compressive strength, and it is less likely to produce broken rice during processing. Uniformity: The uniformity of rice refers to the uniformity of the surface shape, particle shape, size and moisture content of the rice. Impurity ratio: According to the provisions of GB 1350-2009, the impurity ratio of any variety and grade of rice should be less than (or equal to)1.0%. However, the reality is that the sources of raw grains are diverse, and the proportion of impurities generally exceeds the standard, with some even reaching 3% to 4%. This will directly affect the performance indicators of small household rice mills, such as output, power consumption per ton of material, and productivity.