殺(sha)青主要目(mu)的是通過(guo)高溫破壞(huai)和鈍化鮮葉中(zhong)(zhong)的氧化酶(mei)活性，抑制鮮葉中(zhong)(zhong)的茶(cha)多(duo)(duo)酚等的酶(mei)促(cu)氧化，防止烘(hong)干(gan)過(guo)程中(zhong)(zhong)變(bian)色。同時散發青臭(chou)味(wei)，促(cu)進良(liang)好香氣(qi)的形成。殺(sha)青機械多(duo)(duo)采用(yong)微波殺(sha)青機、滾筒殺(sha)青機和燃氣(qi)炒青機。

微波殺青機

微(wei)(wei)波(bo)(bo)殺(sha)(sha)青(qing)(qing)(qing)設備(bei)是(shi)一(yi)種新型(xing)的(de)(de)(de)殺(sha)(sha)青(qing)(qing)(qing)設備(bei)，殺(sha)(sha)青(qing)(qing)(qing)速(su)度快(kuai)、效(xiao)率高、效(xiao)果好。在殺(sha)(sha)青(qing)(qing)(qing)的(de)(de)(de)同時，還可(ke)以除(chu)去約10%的(de)(de)(de)鮮(xian)葉(xie)(xie)水(shui)分(fen)。微(wei)(wei)波(bo)(bo)殺(sha)(sha)青(qing)(qing)(qing)機的(de)(de)(de)原理主(zhu)要(yao)是(shi)利用(yong)迅速(su)升溫來鈍化鮮(xian)葉(xie)(xie)的(de)(de)(de)的(de)(de)(de)活性氧化酶(mei)，抑(yi)制鮮(xian)葉(xie)(xie)中的(de)(de)(de)茶多酚等(deng)酶(mei)加速(su)氧化，防止(zhi)在后(hou)續烘干過程中發生色澤嚴重改變(bian)，同時揮發鮮(xian)葉(xie)(xie)的(de)(de)(de)腥(xing)草味(wei)，使茶香更好的(de)(de)(de)形成。采(cai)用(yong)微(wei)(wei)波(bo)(bo)殺(sha)(sha)青(qing)(qing)(qing)設備(bei)對茶葉(xie)(xie)、菊花(hua)、金銀花(hua)等(deng)農產品(pin)進行殺(sha)(sha)青(qing)(qing)(qing)，平均每公斤的(de)(de)(de)量所需要(yao)的(de)(de)(de)電費不到三(san)毛錢，而且殺(sha)(sha)青(qing)(qing)(qing)效(xiao)果顯(xian)著，產品(pin)色澤、外形和香氣都屬上佳品(pin)。

滾筒殺青機

烏龍(long)茶(cha)(cha)殺(sha)(sha)青(qing)常用(yong)(yong)(yong)90型(xing)與(yu)(yu)110型(xing)兩種(zhong)機(ji)(ji)型(xing)，該機(ji)(ji)結構緊湊、操作(zuo)方便、效率高(gao)。爐(lu)火(huo)直接(jie)加熱轉(zhuan)動(dong)的(de)(de)筒(tong)(tong)(tong)體，茶(cha)(cha)葉(xie)在(zai)筒(tong)(tong)(tong)體內靠摩擦和筒(tong)(tong)(tong)體轉(zhuan)動(dong)的(de)(de)離心(xin)力在(zai)滾(gun)(gun)筒(tong)(tong)(tong)內拋轉(zhuan)，并吸(xi)收熱量(liang)達到殺(sha)(sha)青(qing)目的(de)(de)。殺(sha)(sha)青(qing)適度后，反轉(zhuan)滾(gun)(gun)筒(tong)(tong)(tong)，利用(yong)(yong)(yong)筒(tong)(tong)(tong)壁(bi)的(de)(de)螺旋導葉(xie)板(ban)(ban)將(jiang)(jiang)茶(cha)(cha)葉(xie)推出(chu)筒(tong)(tong)(tong)外。同時，借助(zhu)滾(gun)(gun)筒(tong)(tong)(tong)末端的(de)(de)風(feng)扇(shan)將(jiang)(jiang)筒(tong)(tong)(tong)內茶(cha)(cha)葉(xie)排凈(jing)。該機(ji)(ji)由滾(gun)(gun)筒(tong)(tong)(tong)、傳動(dong)裝置、風(feng)扇(shan)、機(ji)(ji)架、爐(lu)灶(zao)等部(bu)分組成(cheng)(cheng)。滾(gun)(gun)筒(tong)(tong)(tong)用(yong)(yong)(yong)鋼(gang)板(ban)(ban)卷制而(er)成(cheng)(cheng)，內壁(bi)焊(han)有(you)導葉(xie)板(ban)(ban)，導葉(xie)角為24°，其作(zuo)用(yong)(yong)(yong)是幫助(zhu)進(jin)葉(xie)或(huo)推出(chu)殺(sha)(sha)青(qing)葉(xie)，并將(jiang)(jiang)茶(cha)(cha)葉(xie)帶至一定高(gao)度后拋下。風(feng)扇(shan)可(ke)正、反轉(zhuan)，以吹葉(xie)出(chu)筒(tong)(tong)(tong)或(huo)吸(xi)排濕(shi)氣。滾(gun)(gun)筒(tong)(tong)(tong)的(de)(de)兩端外圍(wei)設有(you)擋煙(yan)圈，中(zhong)心(xin)有(you)一轉(zhuan)軸(zhou)，通過兩端的(de)(de)輻條與(yu)(yu)筒(tong)(tong)(tong)體相(xiang)接(jie)，轉(zhuan)軸(zhou)由軸(zhou)承支(zhi)撐于機(ji)(ji)架上。機(ji)(ji)架一般用(yong)(yong)(yong)角鋼(gang)制作(zuo)。爐(lu)灶(zao)由通風(feng)道、爐(lu)柵、爐(lu)膛、煙(yan)囪(cong)等組成(cheng)(cheng)。滾(gun)(gun)筒(tong)(tong)(tong)體置于爐(lu)膛內，爐(lu)膛頂部(bu)有(you)拔(ba)風(feng)口與(yu)(yu)煙(yan)囪(cong)相(xiang)通。110型(xing)殺(sha)(sha)青(qing)機(ji)(ji)傳動(dong)配用(yong)(yong)(yong)功(gong)率1.1千瓦(wa)，投葉(xie)量(liang)15~25千克,風(feng)機(ji)(ji)功(gong)率0.75千瓦(wa)。