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首页> 外文期刊>Agricultural mechanization in Asia, Africa and Latin America >Development of Rice Cleaner for Reduced Impurities and Losses
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Development of Rice Cleaner for Reduced Impurities and Losses

机译：开发减少杂质和损失的稻谷清洁剂

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摘要

The aim of this investigation was to improve a winnowing and cleaning machine for better efficiency and reduced losses. A general theory described the impurities and losses in terms of the other efficiency factors.rnCleaning efficiency and total losses were positively affected by air speed, and sieve tilt angle, but purity was negatively affected by moisture content, and feed rate. The total losses were negatively affected by moisture content and feed rate. Purity increased when using a round-hole sieve compared with slotted sieve.rnThe optimum performance was at air speed of 4 m/s, moisture content of 18 %, sieve tilt-angle of 2 degree, round-shaped sieve, and feed rate of 1,200 kg/h. Purity of these conditions was 98.98 %, with total losses of 0.21 %.rnRelationships describing % impurities (i) and total % losses (L) were derived into the following forms:rni=[k-(0.2a+k_sS)]c~(0.5)rnL = (k_L + 2.5a)S~(2.19)/c~2rnSymbols are as defined in the paper, "k, k; and k" take different values for round and slotted holes, as determined in the paper.
机译：这项调查的目的是改进风选和清洁机，以提高效率并减少损失。通用理论从其他效率因素的角度描述了杂质和损失。清洗效率和总损失受风速和筛网倾角的正影响，而纯度受水分和进料速度的不利影响。总损失受到水分含量和进料速度的不利影响。与开孔筛相比，使用圆孔筛可提高纯度。rn最佳性能是在风速4 m / s，含水量18％，筛倾角2度，圆形筛和进料速度的情况下。 1200公斤/小时这些条件的纯度为98.98％，总损失为0.21％。rn描述杂质％（i）和总损失％（L）的关系式如下：rni = [k-（0.2-（0.2a + k_sS）] c〜 （0.5）rnL =（k_L + 2.5a）S〜（2.19）/ c〜2rn符号如论文中所定义，“ k，k；和k”对圆孔和槽孔取不同的值，如本文所确定。

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