【摘要】 本文介绍了重力式精选机进行小麦、水稻和玉米台架试验的内容及结果,通过试验,采用t检验加权法计算分选质量评分值,分析了物料的分离规律及分选原则;找出了影响分选质量的主、次参数以及它们各自对分选质量的影响和适宜范围:建立了分选质量与参数间的回归方程;并通过优化计算,提出了参数的较佳与最佳组合。更多还原

【Abstract】 This paper introduces following tested contents and results which were obtained by many tests of separating quality for wheat, rice and maize on the test-bed; ( 1 ) The "method of weighted t-test" was introduced to eval-uate separating quality for seed. ( 2 ) The order of the effect, suitable range and interaction of parameters on separating quality for three kinds of seeds were obtained. ( 3 ) To evaluate separating quality by gravity was compared with by specific gravity. ( 4 ) The relation between the separating quality and the distribution state of grains on the sieve was discussed. ( 5 ) By means of optimization technique the optimum parameters for three kinds of seeds were provided.更多还原