殺青主要目(mu)的(de)是通過(guo)高溫破壞(huai)和(he)鈍化鮮葉中的(de)氧化酶(mei)活性，抑制鮮葉中的(de)茶多(duo)(duo)酚等(deng)的(de)酶(mei)促氧化，防止烘(hong)干過(guo)程(cheng)中變色。同時散發青臭味，促進良好香氣的(de)形成。殺青機(ji)械多(duo)(duo)采(cai)用(yong)微波殺青機(ji)、滾筒殺青機(ji)和(he)燃氣炒(chao)青機(ji)。

微波殺青機

微(wei)(wei)(wei)波殺(sha)青設備(bei)是(shi)一(yi)種新型(xing)的(de)(de)(de)殺(sha)青設備(bei)，殺(sha)青速度快、效率高、效果(guo)好(hao)。在殺(sha)青的(de)(de)(de)同時，還(huan)可以除去約10%的(de)(de)(de)鮮(xian)(xian)(xian)葉(xie)(xie)(xie)水分。微(wei)(wei)(wei)波殺(sha)青機的(de)(de)(de)原理(li)主要是(shi)利(li)用(yong)(yong)迅速升溫來鈍化(hua)鮮(xian)(xian)(xian)葉(xie)(xie)(xie)的(de)(de)(de)的(de)(de)(de)活性氧化(hua)酶(mei)，抑制鮮(xian)(xian)(xian)葉(xie)(xie)(xie)中的(de)(de)(de)茶(cha)多酚等酶(mei)加速氧化(hua)，防(fang)止在后續烘干過程中發(fa)生(sheng)色澤(ze)(ze)嚴重改變(bian)，同時揮(hui)發(fa)鮮(xian)(xian)(xian)葉(xie)(xie)(xie)的(de)(de)(de)腥草味，使茶(cha)香(xiang)更好(hao)的(de)(de)(de)形成。采(cai)用(yong)(yong)微(wei)(wei)(wei)波殺(sha)青設備(bei)對茶(cha)葉(xie)(xie)(xie)、菊花、金銀花等農產品進行殺(sha)青，平均每(mei)公斤的(de)(de)(de)量所需要的(de)(de)(de)電(dian)費不到三毛錢，而(er)且殺(sha)青效果(guo)顯著，產品色澤(ze)(ze)、外形和香(xiang)氣都(dou)屬上佳品。

滾筒殺青機

烏龍茶殺青常(chang)用(yong)(yong)(yong)(yong)90型(xing)與(yu)110型(xing)兩種(zhong)機(ji)(ji)(ji)(ji)型(xing)，該機(ji)(ji)(ji)(ji)結構緊湊、操作方(fang)便、效率(lv)高。爐火直接加熱轉(zhuan)(zhuan)動的(de)筒(tong)(tong)(tong)體(ti)，茶葉(xie)(xie)在(zai)筒(tong)(tong)(tong)體(ti)內靠摩擦(ca)和筒(tong)(tong)(tong)體(ti)轉(zhuan)(zhuan)動的(de)離心力在(zai)滾(gun)筒(tong)(tong)(tong)內拋轉(zhuan)(zhuan)，并吸收(shou)熱量(liang)達到殺青目的(de)。殺青適度后，反轉(zhuan)(zhuan)滾(gun)筒(tong)(tong)(tong)，利用(yong)(yong)(yong)(yong)筒(tong)(tong)(tong)壁的(de)螺旋導葉(xie)(xie)板(ban)將(jiang)(jiang)茶葉(xie)(xie)推出筒(tong)(tong)(tong)外。同時，借助滾(gun)筒(tong)(tong)(tong)末(mo)端(duan)的(de)風(feng)扇(shan)將(jiang)(jiang)筒(tong)(tong)(tong)內茶葉(xie)(xie)排凈。該機(ji)(ji)(ji)(ji)由(you)(you)滾(gun)筒(tong)(tong)(tong)、傳動裝(zhuang)置、風(feng)扇(shan)、機(ji)(ji)(ji)(ji)架、爐灶等部分組(zu)成。滾(gun)筒(tong)(tong)(tong)用(yong)(yong)(yong)(yong)鋼板(ban)卷制(zhi)而成，內壁焊有(you)導葉(xie)(xie)板(ban)，導葉(xie)(xie)角為24°，其作用(yong)(yong)(yong)(yong)是幫助進葉(xie)(xie)或推出殺青葉(xie)(xie)，并將(jiang)(jiang)茶葉(xie)(xie)帶至一定高度后拋下。風(feng)扇(shan)可正、反轉(zhuan)(zhuan)，以吹葉(xie)(xie)出筒(tong)(tong)(tong)或吸排濕氣。滾(gun)筒(tong)(tong)(tong)的(de)兩端(duan)外圍設有(you)擋煙(yan)圈，中心有(you)一轉(zhuan)(zhuan)軸(zhou)，通(tong)(tong)過兩端(duan)的(de)輻條與(yu)筒(tong)(tong)(tong)體(ti)相接，轉(zhuan)(zhuan)軸(zhou)由(you)(you)軸(zhou)承支撐(cheng)于機(ji)(ji)(ji)(ji)架上(shang)。機(ji)(ji)(ji)(ji)架一般用(yong)(yong)(yong)(yong)角鋼制(zhi)作。爐灶由(you)(you)通(tong)(tong)風(feng)道、爐柵、爐膛、煙(yan)囪等組(zu)成。滾(gun)筒(tong)(tong)(tong)體(ti)置于爐膛內，爐膛頂部有(you)拔風(feng)口與(yu)煙(yan)囪相通(tong)(tong)。110型(xing)殺青機(ji)(ji)(ji)(ji)傳動配用(yong)(yong)(yong)(yong)功率(lv)1.1千瓦(wa)(wa)，投(tou)葉(xie)(xie)量(liang)15~25千克,風(feng)機(ji)(ji)(ji)(ji)功率(lv)0.75千瓦(wa)(wa)。