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简式脱粒机仅有脱粒装置,只能将籽粒从穗头上脱下,至于分离和清选等工作需其它的机具完成。这种脱粒机结构简单,动力多数用人力,如脚踏式人力打稻机(图见第5期36页)。半复式脱粒机除具有脱粒装置外,还有简单的分离装置和清粮装置(筛子和风扇),这种脱粒机除脱粒外,还可以进行初步的分离和清选(图26),一般在风扇后上方设有清粮筛,谷粒经筛选时,风扇将颖壳和杂余吹走。
Simple thresher only threshing device, only the grain from the spike head off, as the separation and clearance and other work required other equipment to complete. This thresher structure is simple, most of the power with manpower, such as foot-type human playing rice machine (see No. 5 36). In addition to the threshing device, the semi-duplex thresher has simple separating devices and cleaning devices (sieves and fans). In addition to threshing, the thresher can also perform preliminary separation and cleaning (Figure 26) After the fan with a clean grain above the screen, the grain by screening, the fan blisters and impurities blown away.