【摘要】 采用清粮装置试验台进行了水稻收割清选试验,得到了影响谷粒损失率与清洁率的主次参数和参数较佳组合;筛面上气流纵向分布与风扇出风道的配置;谷粒沿筛面的分选规律;振动参数与气流参数无明显互补提出以筛子加速度对筛面的垂直分量a_E1^V与平行分量a_E1^H作为清选性能的特征参数.更多还原

【Abstract】 In this paper, tests and research on the separating performance of the sieve-airstream cleaning unit were made on the cleaning unit test bed. The order of importance of the parameters which influence the separating performance was found, and optimal parametric combinations were obtained. It was found that the longitudinal distribution of the airstreain velocity on the sieve was influenced by the air blast direction of the fan. The regularity of the grain separation on the sieve was also investigated.The and might be used as the characteristic parameters indicating the separating performance of the sieve, and the proper range of their numerical values was proposed.更多还原