文档介绍：螺旋式清选脱粒装置设计脱粒机一般由喂入装置、脱粒装置、分离装置、清选装置、输送装置和机架等组成。脱粒时,谷物由人工铺放到喂入台上,经喂入台送入脱粒装置,由滚筒脱粒。脱粒后的长茎秆从出草口被抛出。谷粒及杂余混合物从凹板的空隙落下,轻杂余被风扇产生的风力吹出机外,粮食落入出粮口后流出。设计有2级滚筒的机型,谷物经第1级滚筒脱粒后进入第2级滚筒,进行第2次脱粒,提高了脱粒净度,与普通机相比具有较高的脱净度。具有风扇和清选筛2种清选装置的机型,在风力清选的基础上,部分不能被风力吹出的轻杂物经清选筛清选后送出机外,加强了清选效果,清选出的粮食较为干净,清洁率明显优于普通机型。设计有逐稿器的脱粒机脱粒时,脱粒后的长茎秆经过逐稿器时被逐稿器不断抖动,使夹带在其中的籽粒被分离出来落入清选装置中,减少了籽粒的夹带损失。Shellergenerallybythefeedingdevice,threshingdevice,separationdevice,cleaningdevice,,grainsbyartificiallaidonthefeedingstage,thefeedingintothethreshingdevice,,thegapmorethanlightnoiseproducedbyfanwindblowingoutside,,grainafterlevel1rollerthreshingentersthedrumoflevel2,secondforthreshing,,onthebasisofthewindpowercleaning,partscannotbethewindblowoutimpuritiesaftercleaningsievecleaningouttheclosed,strengthenedthecleaningeffect,qingchoosefoodismoreclean,,threshingafterlongstalksafterdraftapparatuswereeachdraftapparatusjitter,entrainmentinthegrainsisseparatedoutfallstothecleaningdevice,reducetheentrainmentlossofgrain. sty-480型的脱粒机的清选工作则由扬场机来完成,脱粒时,由螺旋式推运器将籽粒和轻杂余运入扬场机,由扬场机以较大惯性向空中斜线抛出,籽粒由于质量大被抛出较远,而其他轻余被抛出较近,清选工作立即完成。Sty-480typeofthreshingandcleaningworkisdonebygrainthrower,threshing,thepushscrewconveyorwillbemorethanimpuritysubstancesingrainandtransportedintothegrainthrower,withlargerinertiaslashthrownintotheairbygrainthrower,grainthrownfaraway,becauseofthelargequalityandclosemorethanotherlightthrown,cleaningworktobedoneimmediately. 2脱粒机的安全使用技术2thresherthesafeuseoftechnology 一是安全检查。拧紧松动的螺母,如皮带轮、机架、紧固螺丝、滚筒间隙调整螺母,滚筒纹杆或钉齿紧固螺母等,以防发生机械或人身伤亡事故。检查滚筒、皮带轮、轴承座等部件有无裂缝、断开或其他损坏情况。二是试运转。首先在各运转部门加注润滑油,装好传动皮带,先用人力带动脱粒机转动,查看有无卡滞、碰撞和其他异常现象,若有应及时排除。然后接上动力,进行空运