家用小型玉米脱粒机的设计
The Design of a Small Corn Thresher for Household Use

我国玉米种植地区广，对于一些偏远山区丘陵地带，大型脱粒设备不便运输，因此设计一种小型的，效率高的家用设备具有十分重要的实际意义。本设计主要采用板齿式的脱离滚筒和筛网组成，这两个原件间隙组合，滚筒上有螺旋式的推进结构。工作时，通过入料口进入的玉米由螺旋结构将玉米推入板齿与筛网的间隙中，通过与滚筒上的板齿和筛网进行充分的旋转接触，进而将玉米棒上的籽粒脱掉，以达到脱粒的目的，不同于钉齿式和打击式的脱粒，板齿式的脱粒方法也能有效地降低破损率。
China’s corn planting area is wide, for some remote mountainous and hilly areas, large-scale threshing equipment is inconvenient to transport, so the design of a small, high-efficiency household equipment has very important practical significance. This design is mainly composed of plate-tooth type detachment drum and screen, the gap between the two elements is combined, and the drum has a spiral propulsion structure. During the work, the corn entering through the inlet is pushed into the gap between the plate tooth and the screen by the spiral structure, and the grain on the corn cob is removed by making full rotational contact with the plate tooth and the screen on the drum, so as to achieve the purpose of threshing. Unlike the nail-tooth and impact threshing methods, the plate-tooth threshing method can also effectively reduce the breakage rate.