殺(sha)青(qing)主要目的(de)(de)(de)(de)是通(tong)過高溫破(po)壞(huai)和鈍化鮮(xian)葉中(zhong)的(de)(de)(de)(de)氧化酶活性(xing)，抑制(zhi)鮮(xian)葉中(zhong)的(de)(de)(de)(de)茶多(duo)酚等的(de)(de)(de)(de)酶促(cu)氧化，防止烘干過程中(zhong)變色。同時散(san)發青(qing)臭味(wei)，促(cu)進良(liang)好香(xiang)氣的(de)(de)(de)(de)形成(cheng)。殺(sha)青(qing)機械多(duo)采用微波殺(sha)青(qing)機、滾筒殺(sha)青(qing)機和燃氣炒青(qing)機。

微波殺青機

微(wei)波(bo)殺(sha)(sha)青(qing)(qing)設備是一種新型的殺(sha)(sha)青(qing)(qing)設備，殺(sha)(sha)青(qing)(qing)速(su)度(du)快、效率(lv)高、效果好(hao)。在殺(sha)(sha)青(qing)(qing)的同時，還可以除去約10%的鮮(xian)葉(xie)(xie)(xie)水分(fen)。微(wei)波(bo)殺(sha)(sha)青(qing)(qing)機的原理(li)主要是利用迅速(su)升(sheng)溫來鈍化鮮(xian)葉(xie)(xie)(xie)的的活(huo)性氧化酶，抑(yi)制(zhi)鮮(xian)葉(xie)(xie)(xie)中的茶(cha)多酚等(deng)酶加速(su)氧化，防止(zhi)在后續(xu)烘干過(guo)程(cheng)中發生色(se)澤(ze)嚴重(zhong)改變，同時揮發鮮(xian)葉(xie)(xie)(xie)的腥草味，使茶(cha)香(xiang)更好(hao)的形(xing)成。采(cai)用微(wei)波(bo)殺(sha)(sha)青(qing)(qing)設備對(dui)茶(cha)葉(xie)(xie)(xie)、菊花、金銀(yin)花等(deng)農產品進行殺(sha)(sha)青(qing)(qing)，平均每公斤的量所需要的電費不(bu)到三(san)毛(mao)錢，而(er)且殺(sha)(sha)青(qing)(qing)效果顯著，產品色(se)澤(ze)、外(wai)形(xing)和(he)香(xiang)氣都屬(shu)上佳品。

滾筒殺青機

烏(wu)龍茶殺(sha)青常用(yong)90型與(yu)110型兩種機(ji)(ji)型，該(gai)機(ji)(ji)結構緊湊、操(cao)作方便、效率高。爐(lu)(lu)火直接加熱(re)轉(zhuan)動(dong)的筒(tong)(tong)(tong)體，茶葉(xie)(xie)在筒(tong)(tong)(tong)體內(nei)靠摩(mo)擦(ca)和筒(tong)(tong)(tong)體轉(zhuan)動(dong)的離心力在滾(gun)(gun)(gun)筒(tong)(tong)(tong)內(nei)拋(pao)轉(zhuan)，并(bing)吸(xi)收(shou)熱(re)量達(da)到殺(sha)青目的。殺(sha)青適度后，反轉(zhuan)滾(gun)(gun)(gun)筒(tong)(tong)(tong)，利用(yong)筒(tong)(tong)(tong)壁的螺旋導葉(xie)(xie)板將(jiang)(jiang)茶葉(xie)(xie)推出(chu)筒(tong)(tong)(tong)外(wai)。同(tong)時(shi)，借助滾(gun)(gun)(gun)筒(tong)(tong)(tong)末端的風(feng)(feng)扇將(jiang)(jiang)筒(tong)(tong)(tong)內(nei)茶葉(xie)(xie)排(pai)凈。該(gai)機(ji)(ji)由滾(gun)(gun)(gun)筒(tong)(tong)(tong)、傳動(dong)裝置、風(feng)(feng)扇、機(ji)(ji)架(jia)、爐(lu)(lu)灶等部分(fen)組成(cheng)(cheng)(cheng)。滾(gun)(gun)(gun)筒(tong)(tong)(tong)用(yong)鋼(gang)板卷制(zhi)而成(cheng)(cheng)(cheng)，內(nei)壁焊有導葉(xie)(xie)板，導葉(xie)(xie)角為24°，其作用(yong)是幫助進(jin)葉(xie)(xie)或推出(chu)殺(sha)青葉(xie)(xie)，并(bing)將(jiang)(jiang)茶葉(xie)(xie)帶至一定高度后拋(pao)下。風(feng)(feng)扇可正、反轉(zhuan)，以吹葉(xie)(xie)出(chu)筒(tong)(tong)(tong)或吸(xi)排(pai)濕氣。滾(gun)(gun)(gun)筒(tong)(tong)(tong)的兩端外(wai)圍設有擋煙(yan)圈(quan)，中心有一轉(zhuan)軸，通過兩端的輻條(tiao)與(yu)筒(tong)(tong)(tong)體相接，轉(zhuan)軸由軸承支撐于機(ji)(ji)架(jia)上。機(ji)(ji)架(jia)一般用(yong)角鋼(gang)制(zhi)作。爐(lu)(lu)灶由通風(feng)(feng)道、爐(lu)(lu)柵、爐(lu)(lu)膛(tang)(tang)、煙(yan)囪等組成(cheng)(cheng)(cheng)。滾(gun)(gun)(gun)筒(tong)(tong)(tong)體置于爐(lu)(lu)膛(tang)(tang)內(nei)，爐(lu)(lu)膛(tang)(tang)頂部有拔(ba)風(feng)(feng)口與(yu)煙(yan)囪相通。110型殺(sha)青機(ji)(ji)傳動(dong)配用(yong)功(gong)率1.1千(qian)瓦，投葉(xie)(xie)量15~25千(qian)克,風(feng)(feng)機(ji)(ji)功(gong)率0.75千(qian)瓦。