PAGEIV摘要随着我国农业粮一经一饲三元种植结构的建立，种植牧草、发展草食家畜，已成为许多地方经济发展新的增长点。本研究就拿苜蓿做为研究对象。本研究利用已查阅的文献资料，总结出不同含水量、直径、长度的苜蓿段的临界速度;以及苜蓿干燥过程中热风温度、热风速度、物料初始水分、干燥时间对干燥后苜蓿水分、分钟降水率、分钟降水量、单位能耗的影响规律，寻找苜蓿薄层干燥最佳工艺参数组合，为牧草干燥机设计提供可借鉴的技术参数;并设计制造出小型牧草干燥机。关键词：干燥机；牧草；隧道式AbstractPassesthroughassoonasassoonasalongwithourcountryagriculturegrainraisesthreeYuanplanterstructurestheestablishment,theplanterforagegrass,thedevelopmentgrassfooddomesticanimal,hasbecomemanyplaceeconomiestodevelopthenewpointofgrowth.Thisresearchtakesthealfalfatodofortheobjectofstudy.Thisresearchusehasconsultedtheliteraturematerial,summarizesthedifferentwatercontent,thediameter,thelengthalfalfasectioncriticalspeed;Aswellasinthealfalfadryingintransitthehot-blasttemperature,thehotblastspeed,thematerialinitialmoisturecontent,thedryingtimeafterthedrynessthealfalfamoisturecontent,aminuteprecipitationrate,aminuteprecipitation,theunitenergyconsumptioninfluencerule,seekthealfalfathinlayerdrybestcraftparametercombination,providesthetechnicalparameterfortheforagegrassdryerdesignwhichmayprofitfrom;Anddesignsmakesthesmallforagegrassdryer.Keyword:Dryer;Foragegrass;Tunneltype目录TOC\o"1-2"\h\z\uHYPERLINK\l"_Toc200360097"前言PAGEREF_Toc200360097\h-1-HYPERLINK\l"_Toc200360098"1.国内外牧草干燥技术发展概况PAGEREF_Toc200360098\h-2-HYPERLINK\l"_Toc200360099"1.1牧草干燥方法简介PAGEREF_Toc200360099\h-2-HYPERLINK\l"_Toc200360100"1.2国外研究现状PAGEREF_Toc200360100\h-3-HYPERLINK\l"_Toc200360101"1.3国内研究现状PAGEREF_Toc200360101\h-3-HYPERLINK\l"_Toc200360102"2.立题依据及设计目的PAGEREF_Toc200360102\h-5-HYPERLINK\l"_Toc200360103"3.设计要求PAGEREF_Toc200360103\h-5-HYPERLINK\l"_Toc200360104"4.主要结构、原理及技术性能参数PAGEREF_Toc200360104\h-5-HYPERLINK\l"_Toc200360105"4.1牧草干燥机组组成PAGEREF_Toc200360105\h-5-HYPERLINK\l"_Toc200360106"4.2技术关键及牧草干燥原理PAGEREF_Toc200360106\h-6-HYPERLINK\l"_Toc200360107"4.3设计依据PAGEREF_Toc200360107\h-6-HYPERLINK\l"_Toc200360108"4.4牧草干燥的工艺流程