In modern rice mills, many adjustments (e.g. rubber roll clearance, separator bed inclination, feed rates) are automated for maximum efficiency and ease of operation. The whitener-polishers are provided with gauges that sense the current load on the motor drives which gives an indication of the operating pressure on the grain. This provides a more objective means of setting milling pressures on the grain.
To improve the process performance of the rubber roll rice husker and determine the optimum technical parameters, optimization on the technical parameters and the experiments on the process effect were carried out. The results indicated that the process parameters were all optimal, such as husked rice ratio (93.35%), output(146.41 kg/cm•h), rubber consumption (4.63 g) and percentage of raw broken (4.66%) when the roll pressure of rubber roll rice husker was 7.0 kg/cm on the condition that feeding , fast linear speed and difference of linear speed were all invariable. By the same ruler, when the fast linear speed was 18.47m/s, the process parameters of percentage of raw broken, output and rubber consumption were optimal, which were 5.29%, 142.16 kg/cm•h and 148.36 kg/cm•h respectiuely. When the feeding was 172.31 kg/cm•h, the optimal results were achieved which were 148.36 kg/cm•h in output, 4.63% in percentage of raw broken, and 3.62 g in rubber consumption; And when the difference of linear speed was 3.16 m/s, the optimal results were obtained, which were 90.83% in husked rice ratio, 4.51 g in rubber consumption and 4.41% in percentage of raw broken. The research results can offer references for the design of rubber roll rice huskers.