注意:超淨工作台(cleanbench)與生物安全櫃(Biosafety Cabinet)不同。
超淨工作台隻能保護在工作台內操作的試劑等不受汙染,並不保護工作人員,而生物安全櫃是負壓係統,能有效保護工作人員。
其工作原理為
通tong過guo風feng機ji將jiang空kong氣qi吸xi入ru預yu過guo濾lv器qi,經jing由you靜jing壓ya箱xiang進jin入ru高gao效xiao過guo濾lv器qi過guo濾lv,將jiang過guo濾lv後hou的de空kong氣qi以yi垂chui直zhi或huo水shui平ping氣qi流liu的de狀zhuang態tai送song出chu,使shi操cao作zuo區qu域yu達da到dao百bai級ji潔jie淨jing度du,保bao證zheng生sheng產chan對dui環huan境jing潔jie淨jing度du的de要yao求qiu。超chao淨jing工gong作zuo台tai根gen據ju氣qi流liu的de方fang向xiang分fen為wei垂chui直zhi流liu超chao淨jing工gong作zuo台tai和he水shui平ping流liu超chao淨jing工gong作zuo台tai,根gen據ju操cao作zuo結jie構gou分fen為wei單dan邊bian操cao作zuo及ji雙shuang邊bian操cao作zuo兩liang種zhong形xing式shi,按an其qi用yong途tu又you可ke分fen為wei普pu通tong超chao淨jing工gong作zuo台tai和he生sheng物wu(醫藥)超淨工作台。
1、工作原理
chaojinggongzuotaiyuanlishizaizaitedingdekongjiannei,shineikongqijingyuguolvqichulv,youxiaoxinglixinfengjiyarujingyaxiang,zaijingkongqigaoxiaoguolvqierjiguolv,congkongqigaoxiaoguolvqichufengmianchuichudejiejingqiliujuyouyidingdehejunyundeduanmianfengsu,keyipaichugongzuoquyuanlaidekongqi,jiangchenaikeliheshengwukelidaizou,yixingchengwujundegaojiejingdegongzuohuanjing。
2、產品分類從氣流流向分為:垂直流超淨工作台和水平流超淨工作台;超淨工作台從操作人員數上分:分為單人工作台和雙人工作台;超淨工作台從結構上分:分為常規型和新型推拉以及自循環型(僅限垂直流)。
超淨工作台根據氣流的方向分為垂直流超淨工作台(vertical flow clean bench)和水平流超淨工作台(horizontalflowclean bench),垂直流工作台由於風機在頂部所以噪音較大但是風垂直吹多用在醫藥工程這樣保證人的身體健康;shuipingliugongzuotaizaoyinbijiaoxiaofengxiangwangwaisuoyiduoyongzaidianzixingye,duishentijiankangyingxiangbuda。genjucaozuojiegoufenweidanbiancaozuojishuangbiancaozuoliangzhongxingshi,anqiyongtuyoukefenweiputongchaojinggongzuotaiheshengwu(醫藥)超淨工作台。
3、注意事項
超淨台電源多采用三相四線,其中有一零線,連通機器外殼,應接牢在地線上,另外三線都是相線,工作電壓是380V。三線接入電路中有一定的順序,如線頭接錯了,風機會反轉,這時聲音正常或稍不正常,超淨台正麵無風(可用酒精燈火焰觀察動靜,不宜久試),應(ying)及(ji)時(shi)切(qie)斷(duan)電(dian)源(yuan),隻(zhi)將(jiang)其(qi)中(zhong)任(ren)何(he)兩(liang)相(xiang)的(de)線(xian)頭(tou)交(jiao)換(huan)一(yi)下(xia)位(wei)置(zhi)再(zai)接(jie)上(shang),就(jiu)可(ke)解(jie)決(jue)。三(san)相(xiang)線(xian)如(ru)隻(zhi)接(jie)入(ru)兩(liang)相(xiang),或(huo)三(san)相(xiang)中(zhong)有(you)一(yi)相(xiang)接(jie)觸(chu)不(bu)良(liang),則(ze)機(ji)器(qi)聲(sheng)音(yin)很(hen)不(bu)正(zheng)常(chang),應(ying)立(li)即(ji)切(qie)斷(duan)電(dian)源(yuan)仔(zai)細(xi)檢(jian)修(xiu),否(fou)則(ze)會(hui)燒(shao)毀(hui)電(dian)機(ji)。這(zhe)些(xie)常(chang)識(shi)應(ying)在(zai)開(kai)始(shi)使(shi)用(yong)超(chao)淨(jing)台(tai)時(shi)就(jiu)向(xiang)工(gong)作(zuo)人(ren)員(yuan)講(jiang)解(jie)清(qing)楚(chu),免(mian)除(chu)不(bu)應(ying)造(zao)成(cheng)事(shi)故(gu)與(yu)損(sun)失(shi)。
超淨台進風口在背麵或正麵的下方,金屬網罩內有一普通泡沫塑料片或無紡布,用以阻攔大顆粒塵埃,應常檢查、chaixi,rufapaomosuliaolaohua,jishigenghuan。chujinfengkouyiwai,ruyoulouqikongxi,yingdangduyan,rutiejiaobu,saimianhua,tiejiaoshuizhideng。gongzuotaizhengmiandejinshuwangzhaoneishichaojilvqingqi,chaojilvqingqiyekegenghuan,rushiyongnianjiu,chenlidusai,fengsujianxiao,bunengbaozhengwujuncaozuoshi,zekehuanshangxinde。
超chao淨jing台tai使shi用yong壽shou命ming的de長chang短duan與yu空kong氣qi的de潔jie淨jing度du有you。在zai溫wen帶dai地di區qu超chao淨jing台tai可ke在zai一yi般ban實shi驗yan室shi使shi用yong,然ran而er在zai熱re帶dai或huo亞ya熱re帶dai地di區qu,由you大da氣qi中zhong含han有you量liang的de花hua粉fen,或huo多duo粉fen塵chen的de地di區qu,超chao淨jing台tai則ze宜yi放fang在zai較jiao好hao的de有you雙shuang道dao門men的de室shi內nei使shi用yong。任ren何he情qing下xia不bu應ying將jiang超chao淨jing台tai的de進jin風feng罩zhao對dui著zhe開kai敞chang的de門men或huo窗chuang,以yi免mian影ying響xiang濾lv清qing器qi的de使shi用yong壽shou命ming。
無菌室應定期用70%酒精或0.5%苯酚噴霧降塵和消毒,用2%新潔爾滅抹拭台麵和用具(70%酒精也可),用福爾馬林(40%甲醛)加少量**鉀定期密閉熏蒸,配合紫外線滅菌燈(每次開啟15分鍾以上)等等消毒滅菌手段,以使無菌室經常保持度的無菌狀。接種箱內部也應裝有紫外線燈,使用前開燈15分(fen)鍾(zhong)以(yi)上(shang)照(zhao)射(she)滅(mie)菌(jun),但(dan)凡(fan)是(shi)照(zhao)射(she)不(bu)到(dao)之(zhi)處(chu)仍(reng)是(shi)有(you)菌(jun)的(de)。在(zai)紫(zi)外(wai)線(xian)燈(deng)開(kai)啟(qi)時(shi)間(jian)較(jiao)長(chang)時(shi),可(ke)激(ji)發(fa)空(kong)氣(qi)中(zhong)的(de)氧(yang)分(fen)子(zi)締(di)合(he)成(cheng)臭(chou)氧(yang)分(fen)子(zi),這(zhe)種(zhong)氣(qi)分(fen)有(you)很(hen)強(qiang)的(de)殺(sha)菌(jun)作(zuo)用(yong),可(ke)以(yi)對(dui)紫(zi)外(wai)線(xian)沒(mei)有(you)直(zhi)接(jie)照(zhao)到(dao)的(de)角(jiao)落(luo)產(chan)生(sheng)滅(mie)菌(jun)效(xiao)果(guo)。由(you)於(yu)臭(chou)氧(yang)有(you)礙(ai)健(jian)康(kang),在(zai)進(jin)入(ru)操(cao)作(zuo)之(zhi)前(qian)應(ying)先(xian)掉(diao)紫(zi)外(wai)線(xian)燈(deng),後(hou)十(shi)多(duo)分(fen)鍾(zhong)即(ji)可(ke)入(ru)內(nei)。
zaichaojinggongzuotaishangyikediaozhuangziwaixiandeng,danyingzhuangzaizhaomingdengzhaozhiwai,bingcuokaizhaomingdengdepailie,zheyangzaigongzuoshibufangaizhaoming。ruojiangziwaixiandengzhuangruzhaomingdengzhao(玻璃板)裏麵,這是毫無用處的,為紫外線不能穿透玻璃,它的燈管是石英玻璃,而不是矽酸鹽玻璃的。
jiezhongshineiliqiujianjie,fanyubenshigongzuowuzhijieguanxidewupinyilvbunengfangru,yibaochiwujunzhuang。jiezhongshineidekongqiyuwaijiekongqiyingjueduigejue,yuliudetongqikongdaoyingjinliangmibi。tongqikongdaokesheshangxiaqichuang,qichuangmianjiyishaoda,xufushang4層ceng紗sha布bu作zuo簡jian單dan濾lv塵chen。在zai一yi天tian工gong作zuo之zhi後hou,可ke開kai窗chuang充chong分fen換huan氣qi,然ran後hou再zai予yu以yi密mi閉bi。總zong之zhi,既ji清qing潔jie無wu塵chen無wu菌jun,又you空kong氣qi新xin鮮xian,適shi宜yi工gong作zuo。覆fu在zai通tong氣qi窗chuang上shang的de紗sha布bu應ying經jing常chang換huan洗xi。但dan是shi上shang述shu種zhong種zhong措cuo施shi隻zhi是shi理li想xiang的de設she計ji方fang案an,往wang往wang不bu易yi全quan麵mian做zuo到dao,其qi實shi隻zhi嚴yan格ge無wu菌jun操cao作zuo手shou續xu,在zai門men窗chuang敞chang開kai的de室shi內nei,有you一yi超chao淨jing台tai的de保bao護hu,接jie種zhong的de汙wu染ran率lv仍reng可ke控kong在zai生sheng產chan上shang可ke以yi容rong忍ren的de水shui準zhun。
4、日常維護要點
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