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摘 要:本文對玉米脫粒理論與脫粒裝置的結(jié)構(gòu)進(jìn)行了分析與設(shè)計(jì)。作為家用小型玉米脫粒機(jī)，采用臥式結(jié)構(gòu)，要求玉米脫粒后使玉米芯和玉米粒分離；采用打擊式原理，相似于紋桿式玉米脫粒機(jī)通過滾筒筋打擊玉米，或玉米之間碰撞使玉米粒產(chǎn)生摩擦和振動(dòng)來破壞玉米粒與玉米芯的連接，從而實(shí)現(xiàn)脫粒。脫粒效率主要取決于打擊速度和打擊機(jī)會(huì)。玉米脫粒同時(shí)采用加裝風(fēng)機(jī)作為清選裝置，玉米粒從柵格板漏出落在出粒斜板上，玉米順著斜板下滑的同時(shí)，風(fēng)機(jī)順著斜板把玉米粒中雜質(zhì)吹開。脫粒機(jī)工作時(shí)，玉米由進(jìn)料口喂入，玉米經(jīng)螺旋推進(jìn)的滾筒筋旋轉(zhuǎn)打擊，玉米粒由柵格孔分離出去，玉米芯從機(jī)尾除雜口排出。結(jié)構(gòu)簡單，實(shí)施方便，使用安全性高，解決了玉米芯和玉米?；旌显谝黄馃o法分離或分離不干凈等問題，其機(jī)械損傷輕、破碎率低、清潔度高、夾帶損失率低。 關(guān)鍵詞：玉米脫粒機(jī) 臥式 打擊脫粒 滾筒筋
Abstract: In this paper, the theory and structure of threshing corn threshing device is analyzed and designed。 As a household small corn thresher, using the horizontal structure, requirements for corn threshing the corn cobs and maize grain separation; using the principle of the striking type, similar to the thread rod type corn thresher by roller bar fight corn, or maize collision between the maize particle friction and vibration to damage the connecting corn and corn cob, so as to realize threshing. The threshing efficiency depends mainly on hitting velocity and opportunity. Corn threshing and by adding the fan as the cleaning device, corn grain from the grid plate dew falls on the particle board, corn along the inclined plate decline at the same time, Fans along the inclined plate to blow off impurities in corn kernels, corn is fed from the feed port, roller bar rotary percussion corn by spiral propulsion, corn grain by grid hole is separated from the corn thresher, corncob impurity discharge port from the tail. Simple structure, easy implementation, high edible safety, which solves the corn cob and corn kernels mixed together cannot be separated or isolated issues such as not clean. The mechanical damage of light, low broken rate, high cleanliness, entrainment loss rate is low. Key words: Corn threshing machine；Horizontal；Blow threshing；Drum ribs |
