A rice grader can be a simple one or two step process, or a multi stage process. In a one step milling process, husk and bran removal are done in one pass and milled or white rice is produced directly out of paddy.
A pneumatic rice polishing system has been developed to minimize broken content (BP) and maximize the degree of polishing (DP). This rice polisher consists of a metallic cyclone coated with hard abrasive material, a blower, a collection system.
In modern method of processing, the term milling encompasses cleaning, drying, dehusking, aspirating of husk, separating paddy and brown rice, polishing to remove bran and grading rice and broken by rice polisher.
Rice polisher is equipped with water-cooling system, which can control the processing temperature and ensure the material has no invariance during processing.
In the complete maintenance of rice polisher machine, we can disassemble the motor and maintain it, clean the motor bearing and infuse oil, check the insulation monitoring, make the cooling system perfect
Rice processing machines produced in developed countries are mostly unaffordable by rural farmers, hence there from available local materials desirable in food industry that meets the need of the rural farmers.
For small capacity, hand work is ok, can make labor use well, while if for large capacity, hand work may can not satisfy with the machine work, and too much labor work together may a little waste of time