摘要 咖啡是当下主流饮品之一，经济价值极高，咖啡豆是制成咖啡的主要原材料，外层包裹着一层硬壳，采用人工脱壳效率低、劳动成本高。文中根据查找有关于咖啡豆脱壳机的文献，对其优缺点进行分析后，确定以三辊式脱壳装置为基础进行改进设计，三辊式脱壳装置主要由两根动辊和一根静辊组成，辊上设置有等距螺纹，动辊与静辊形成转速差，外壳与辊产生摩擦、挤压作用实现脱壳。改进设计内容主要包括：在其原有的基础上增加二次脱壳装置，在原有的静辊上设置调节装置，分离装置采用先风选后网筛的方式，传动系统的设计计算。改进设计主要解决了原有脱壳装置脱壳率不高、不能对体积大小的咖啡豆进行脱壳、分离不彻底等问题。 关键词：咖啡豆；脱壳；风选；网筛 Abstract Coffee is o
ne of the mai
nstream dri
nks at the mome
nt. The eco
nomic value is extremely high. Coffee bea
ns are the mai
n raw materials for maki
ng coffee. The outer layer is covered with a hard shell, a
nd the use of artificial shelli
ng is i
nefficie
nt a
nd the labor cost is high. Accordi
ng to the literature o
n coffee bea
ns huski
ng machi
ne, the paper a
nalyzes the adva
ntages a
nd disadva
ntages of coffee bea
ns huski
ng machi
ne, a
nd determi
nes that the three-roll huski
ng device is used as the basis for improvi
ng the desig
n. The three-roll huski
ng device is mai
nly composed of two dy
namic rolls a
nd o
ne static roller., The roller is equipped with equidista
nce thread. The rotatio
n speed differe
nce betwee
n the dy
namic roller a
nd the static roller, the frictio
n betwee
n the shell a
nd the roller, a
nd the extrusio
n effect to achieve shelli
ng. The improved desig
n mai
nly solves the problems such as the low huski
ng rate of the origi
nal huski
ng device, the i
nability to husk the size of the coffee bea
ns, a
nd the i
ncomplete separatio
n. The mai
n co
nte
nts of the improved desig
n i
nclude: the additio
n of a seco
ndary dehulli
ng device o
n the basis of its origi
nal, the setti
ng of a adjusti
ng device o
n the origi
nal static roller, the separatio
n device usi
ng the method of first wi
nd selectio
n a
nd the
n scree
n, a
nd the desig
n a
nd calculatio
n of the tra
nsmissio
n system. Key words: coffee bea
ns; Shelli
ng; Wi
nd selectio
n; Double scree
ni
ng; Sole works 目录 1概述1 1.1课题研究背景1 1.2咖啡豆脱壳机的研究现状1 1.2.1咖啡豆脱壳装置国外研究现状1 1.2.2咖啡豆脱壳装置国内研究现状1 1.2.3分离装置的研究现状4 1.3该课题研究的主要内容4 2咖啡豆脱壳机方案设计5 2.1咖啡豆脱壳装置方案设计5 2.2咖啡豆分离装置方案设计6 3咖啡豆脱壳装置的设计7 3.1动辊的设计7 3.2静辊的设计7 3.2橡胶辊的设计8 3.3导流板的设计9 3.4调节装置的设计10 4分离装置的设计11 4.1风选装置的设计11 4.1.1风机的选择11 4.2网筛装置的设计12 5传动系统的设计14 5.1电机的选择14 5.2带传动设计计算15 5.2.1 V带设计计算15 5.2.2带轮结构设计17 5.3齿轮设计计算18 5.4链传动设计计算19 5.4.1滚子链设计计算19 5.4.2链轮设计20 5.5轴的校核22 6咖啡豆脱壳机的机架设计26 7结论与展望28 7.1结论28 7.2展望29 参考文献31 附录32