殺(sha)青(qing)(qing)主要(yao)目的(de)是通過高溫破壞和(he)鈍化鮮葉中(zhong)的(de)氧化酶(mei)活(huo)性，抑制鮮葉中(zhong)的(de)茶多(duo)酚(fen)等的(de)酶(mei)促氧化，防止烘干過程中(zhong)變色。同(tong)時(shi)散發青(qing)(qing)臭味，促進良好香(xiang)氣(qi)(qi)的(de)形成。殺(sha)青(qing)(qing)機(ji)(ji)械(xie)多(duo)采(cai)用(yong)微波殺(sha)青(qing)(qing)機(ji)(ji)、滾(gun)筒殺(sha)青(qing)(qing)機(ji)(ji)和(he)燃(ran)氣(qi)(qi)炒青(qing)(qing)機(ji)(ji)。

微波殺青機

微(wei)波殺(sha)青(qing)設備是一種(zhong)新型的殺(sha)青(qing)設備，殺(sha)青(qing)速度(du)快、效(xiao)(xiao)率高(gao)、效(xiao)(xiao)果好。在(zai)(zai)殺(sha)青(qing)的同時(shi)，還可以除去約10%的鮮(xian)葉水分。微(wei)波殺(sha)青(qing)機的原理主要是利用迅速升(sheng)溫(wen)來鈍化鮮(xian)葉的的活性氧(yang)化酶，抑制鮮(xian)葉中的茶多酚(fen)等酶加(jia)速氧(yang)化，防止在(zai)(zai)后續烘干過程中發生色澤嚴(yan)重改變，同時(shi)揮發鮮(xian)葉的腥草味，使茶香更好的形成。采用微(wei)波殺(sha)青(qing)設備對茶葉、菊花、金銀(yin)花等農產品進行殺(sha)青(qing)，平均每公斤的量所需要的電費不到三毛錢，而且(qie)殺(sha)青(qing)效(xiao)(xiao)果顯著，產品色澤、外(wai)形和香氣(qi)都屬上佳品。

滾筒殺青機

烏龍茶(cha)(cha)殺青常用(yong)(yong)90型(xing)與(yu)(yu)110型(xing)兩(liang)(liang)種(zhong)機型(xing)，該機結構緊(jin)湊、操作(zuo)方便(bian)、效率(lv)高。爐火直接加熱轉(zhuan)動(dong)的筒(tong)(tong)(tong)(tong)體(ti)(ti)(ti)，茶(cha)(cha)葉(xie)(xie)(xie)在筒(tong)(tong)(tong)(tong)體(ti)(ti)(ti)內(nei)靠摩(mo)擦和筒(tong)(tong)(tong)(tong)體(ti)(ti)(ti)轉(zhuan)動(dong)的離(li)心力在滾筒(tong)(tong)(tong)(tong)內(nei)拋轉(zhuan)，并(bing)吸收(shou)熱量達到殺青目的。殺青適(shi)度(du)后，反(fan)轉(zhuan)滾筒(tong)(tong)(tong)(tong)，利用(yong)(yong)筒(tong)(tong)(tong)(tong)壁的螺旋導葉(xie)(xie)(xie)板將(jiang)茶(cha)(cha)葉(xie)(xie)(xie)推出(chu)筒(tong)(tong)(tong)(tong)外(wai)。同時，借助滾筒(tong)(tong)(tong)(tong)末端(duan)的風(feng)(feng)扇將(jiang)筒(tong)(tong)(tong)(tong)內(nei)茶(cha)(cha)葉(xie)(xie)(xie)排凈。該機由滾筒(tong)(tong)(tong)(tong)、傳動(dong)裝置(zhi)、風(feng)(feng)扇、機架(jia)、爐灶(zao)等(deng)部(bu)分組成(cheng)。滾筒(tong)(tong)(tong)(tong)用(yong)(yong)鋼板卷制而成(cheng)，內(nei)壁焊有(you)(you)(you)導葉(xie)(xie)(xie)板，導葉(xie)(xie)(xie)角為(wei)24°，其作(zuo)用(yong)(yong)是(shi)幫助進葉(xie)(xie)(xie)或(huo)推出(chu)殺青葉(xie)(xie)(xie)，并(bing)將(jiang)茶(cha)(cha)葉(xie)(xie)(xie)帶至一定(ding)高度(du)后拋下。風(feng)(feng)扇可正、反(fan)轉(zhuan)，以吹葉(xie)(xie)(xie)出(chu)筒(tong)(tong)(tong)(tong)或(huo)吸排濕氣。滾筒(tong)(tong)(tong)(tong)的兩(liang)(liang)端(duan)外(wai)圍設有(you)(you)(you)擋(dang)煙(yan)圈，中(zhong)心有(you)(you)(you)一轉(zhuan)軸，通過兩(liang)(liang)端(duan)的輻條與(yu)(yu)筒(tong)(tong)(tong)(tong)體(ti)(ti)(ti)相(xiang)接，轉(zhuan)軸由軸承(cheng)支(zhi)撐于機架(jia)上。機架(jia)一般用(yong)(yong)角鋼制作(zuo)。爐灶(zao)由通風(feng)(feng)道、爐柵、爐膛(tang)(tang)、煙(yan)囪等(deng)組成(cheng)。滾筒(tong)(tong)(tong)(tong)體(ti)(ti)(ti)置(zhi)于爐膛(tang)(tang)內(nei)，爐膛(tang)(tang)頂部(bu)有(you)(you)(you)拔風(feng)(feng)口(kou)與(yu)(yu)煙(yan)囪相(xiang)通。110型(xing)殺青機傳動(dong)配用(yong)(yong)功率(lv)1.1千瓦，投葉(xie)(xie)(xie)量15~25千克,風(feng)(feng)機功率(lv)0.75千瓦。