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1978年研制了具有三种滚筒、四种凹板和五种滚筒上盖的轴流滚筒试验台,可变换七种结构方案进行对比试验。1979—1980年进行了小麦、大豆和玉米等作物脱谷试验,从试验中看出: 七种结构方案均可达6公斤/秒的喂入量,其损失率为1％以下,大豆破碎率为0.5—1％,玉米破碎率为3％左右。诸方案中以钉齿叶片滚筒与三栅条凹板组成方案的脱粒、分离性能最强,对作物湿度的适应性也最大,但功率消耗略大;纹杆叶片滚筒与三栅条凹板组成方案的综合性能指标最好,但对作物湿度的适应性较差。各种方案脱较干的小麦和大豆时,分离物含杂率较大;脱湿小麦时较小;脱玉米时含杂率最小。谷物通过滚筒的时间与滚筒上盖的导板数成正比,与滚筒转速成反比。
In 1978, we developed an axial flow roller test bench with three kinds of rollers, four kinds of concave plates and five kinds of roller covers, which can transform seven kinds of structures and compare them. From 1979 to 1980, experiments on threshing of crops such as wheat, soybean and corn were carried out. From the experiment, we can see that all the seven kinds of structures can reach 6 kg / s, the loss rate is below 1%, the soybean breaking rate 0.5-1%, corn broken rate of about 3%. In all the schemes, the threshing and separating performance of the pinion blade roller and the trilobular concave plate is the strongest, and the adaptability to the crop humidity is also the largest, but the power consumption is slightly larger; the composition of the rapier blade cylinder and the trilobular concave plate The scheme has the best comprehensive performance index but poor adaptability to crop humidity. Various programs off dry wheat and soybean, the larger the impurity content of isolates; smaller when dehumidified wheat; corn removal at the smallest impurity. The time it takes for grain to pass through the drum is proportional to the number of guides on the drum lid and inversely proportional to drum speed.