N95 yog qib kev lees paub ntawm Asmeskas lub tshuab nqus pa, ntawv pov thawj los ntawm National Institute of Occupational Safety thiab Health (NIOSH). Qhov npog ntsej muag no tuaj yeem lim tawm ntau dua 95% ntawm cov teeb meem tsis muaj roj (aerosol) hauv qab huab cua qhia tawm (85L / min), yog li nws tau lub npe N95. Yog tias nws tuaj yeem lim tau ntau dua li 99% ntawm cov teeb meem me me (aerosol), nws hu ua daim npog N99. Ib qho ntxiv, sib raug rau N95, KN95 yog daim npog ntsej muag uas tau lees paub los ntawm Tuam Tshoj GB2626-2006 Kev Tiv Thaiv Kev Tiv Thaiv Kev Tiv Thaiv Kab Mob Tus Kheej Kev Pleev Cov Tshuaj Tiv Thaiv Cov Tshuaj Tiv Thaiv Txheej Txheem.
Lub ntsej muag KN95 thiab N95 muaj tib qhov kev tiv thaiv ib yam, tab sis tsuas yog ua raws cov qauv xeem ntawm ntau lub teb chaws. KN95 qhov ncauj qhov ntswg ua raws li cov qauv hauv Suav, thiab N95 qhov ncauj qhov ntswg ua raws li Asmeskas cov qauv, ob qho tib si muaj kev tiv thaiv kev tiv thaiv tsis tsawg dua 95% rau cov tsis muaj roj-cov hmoov av (sodium chloride particulates rau kev sim).
Lub ntsej muag KN95 tuaj yeem siv rau kev tiv thaiv ua ntej?
Ob lub ntsej muag KN95 thiab N95 daim npog ntsej muag suav nrog hom tshuaj khomob thiab tsis siv tshuaj. Ntawm lawv, cov qhov ncauj qhov ntswg nrog cov cim "Kev Kho Mob" hauv KN95 / N95 qhov ncauj qhov ntswg tuaj yeem siv rau kev tiv thaiv thawj kab ntawm cov neeg ua haujlwm kho mob thaum lub sijhawm tawm tsam. Lub qhov ncauj qhov ntswg tsis muaj "Cim Kho" tsis pom zoo rau cov neeg ua haujlwm kho mob, thiab tuaj yeem siv los ntawm cov neeg zoo tib yam. Cov npog ntsej muag qib 1 thiab siab dua los ua raws GB19083 tuaj yeem tsis tsuas yog ua tiav 95% kev tiv thaiv, tab sis kuj tiv thaiv kua nkag mus ua kua, thiab tuaj yeem siv rau ntau yam haujlwm hauv cov tsev kho mob.
Cov txheej txheem ntawm KN95 qhov ncauj lus tsa los ntawm Hubei Red Cross lub sijhawm no, yog tias cov ntsiab lus ntawm kev tshaj tawm yog muaj tseeb, tom qab paub meej nrog cov tuam tsev pab kev noj qab haus huv, thiab lees tias tus qauv tsis tuaj yeem siv rau kev tiv thaiv thawj cov neeg ua haujlwm kho mob ntawm lub tsev kho mob xaiv rau kev kho mob mob ntsws tshiab, tuaj yeem xav tias nws nyob hauv daim npog KN95 Pawg no tsis yog kev kho mob.
Vim li cas cov ntsej muag KN95 / N95 tuaj yeem tawm tsam?
Cov kab mob feem ntau tsis muaj nyob hauv cov huab cua ib leeg xwb, tab sis txuas rau cov khoom sib xws xws li cov tee dej, plua plav, dander, thiab lwm yam. tsim Kev Tiv Thaiv kev tiv thaiv.
Yog li no, thaum hnav cov KN95 / N95 cov cuab yeej tiv thaiv kev tiv thaiv tus kheej ua pa los tiv thaiv lub ntsej muag tiv thaiv lub ntsej muag lub ntsej muag, them sai sai rau lub ntsej muag, yuav tsum nyob ze rau lub ntsej muag, thiab tsis txhob tawm "lub rooj vag ntawm kev yooj yim" rau cov kab mob thiab kab mob, nws raug nquahu txhawm rau siv kev ceev faj Lub sijhawm muaj "exhalation valve" hom qhov ncauj qhov ntswg.
Qhov txawv ntawm cov qhov ncauj qhov ntswg rau kev kho mob thiab cov tsis yog mob hauv KN95 / N95 yog dab tsi?
Lub ntsiab sib txawv yog qhov txawv sab nrauv ntawm kev kho mob hom npog ntsej muag tau raug kho hydrophobically. Kev kho mob lub qhov ncauj qhov ntswg ntawm GB19083-2010 thiab YY0469-2011 kom meej meej tso rau cov kev xav tau ntawm "hluavtaws nkag mus rau hauv ntshav", qhov ntsuas qhov ntsuas ntawm "saum npoo noo tiv thaiv", thiab ntshiab huv tiv thaiv qhov ncauj qhov ntswg tiv thaiv ntxim rau cov ntshav, dej lub cev thiab lwm yam kua. Hauv cov lus hais, ib yam li cov dej ntws tawm ntawm nplooj nplooj qhaus, cov kua tsis tuaj yeem nkag rau hauv lub npog ntsej muag, uas tuaj yeem tiv thaiv cov neeg ua haujlwm kho mob feem ntau kov cawv, ntshav, thiab lwm yam kom tiv thaiv nws los ntawm kev nrawm nrawm; nws tsis yog hom kev kho mob KN95 / N95 qhov ncauj qhov ntswg yuav tsis mus los ntawm qhov kev kho mob tshwj xeeb no.
Txoj haujlwm tiv thaiv zoo tshaj plaws ntawm KN95 thiab N95 lub ntsej muag tiv thaiv yog cov lim txheej. Cov txheej lim tau ua los ntawm polypropylene yaj-blown microfiber electret khoom. Lub ntsej muag sab nraud ntawm daim npog tsis tau kho nrog tshuaj pleev cov dej. Daim ntawv thov ntawm dej thiab cawv yuav tua cov khoom. Cov qauv ntawm lub taub lim zoo heev txo cov txiaj ntsig lim. Dab tsi ntxiv, cov ntshav feem ntau muaj cov kab mob, kab mob, thiab lwm yam, thiab lub tsev kho mob daim ntawv thov kev txiav txim siab tias cov neeg ua haujlwm kho mob yuav tsum raug rau tus neeg mob cov ntshav ib puag ncig nrog qhov muaj qhov tshwm sim ntau. Yog li no, kev kho mob hydrophobic rau saum npoo ntawm daim npog kho mob yog qhov tseem ceeb. Thiab cov neeg zoo tib yam tsis tshua muaj hmoo pom muaj cawv thiab ntshav. Tsuav tus npog ntsej muag tau hloov pauv tsis tu ncua, sab nraud yuav tsis muaj kev phom sij yog tsis muaj kev kho mob no.
Dab tsi yog kev tiv thaiv kev tiv thaiv ntawm KN95 / N95 daim npog nrog lub qhov ncauj ua pa?
KN95 / N95 qhov ncauj qhov ntswg tseem muab faib ua lub tshuab ua pa thiab tsis muaj pa ua pa. Rau cov qhov ncauj qhov ntswg, breathability thiab filtration efficiency yog ib txwm muaj kev sib cav. Yog tias qhov pom kev ua haujlwm tau zoo, koj yuav hnov mob ib ce heev. Lub nqus pa valve yog tsim los daws qhov ua tsis taus pa.
Lub exhalation valve thiab lub laum pa yog qhov hloov hloov tshuab. Thaum nqus tau, lub valve qhib thaum nqus pa. Cov huab cua yog "kuaj" los ntawm txheej lim. Lub valve qhib thaum lub zog tso tawm kom txo qhov kev nkag siab. Qhov teeb meem yog tias nws tsis paub meej tias lub tshuab hloov hluav taws xob no yuav dheev tawg thaum hnav, lossis nws yuav ntes tau los ntawm cov khoom tawg zoo, cia cov pa phem ntawm cov huab cua uas tsis tau dhau los ntawm cov lim txheej kom tau txais txiaj ntsig nws. Yog li, txhua hom kev kho mob qhov ncauj qhov ntswg tsis muaj qhov tsis muaj pa ua pa. Nyob rau tib lub sijhawm ntawd, peb tseem thov rov hais dua tias lub sijhawm tiv thaiv kev kis mob, tshwj xeeb tshaj yog thaum ib puag ncig ib puag ncig tsis zoo, cov neeg zoo tib yam tseem sim xaiv lub ntsej muag KN95 / N95 lossis kev kho mob qhov ncauj qhov ntswg uas tsis muaj qhov ua pa tawm.
daim ntawv qhia
Peb tsis tsim cov khoom tiv thaiv xws li lub npog qhov ncauj, tab sis kuj tsis kam muag txhua yam khoom tiv thaiv ntawm tus nqi siab. Yog tias koj xav tau thiab tab tom nrhiav rau cov khoom qub, thov hu rau peb, peb yuav ua qhov zoo tshaj plaws pab txhua tus kom tau txais cov khoom tiv thaiv lawv tsim nyog. Cov ntaub ntawv peb tuaj yeem pab koj kom tau txais tam sim no: qhov ncauj qhov ntswg, tiv thaiv khaub ncaws, looj hnab looj tes. riohua@fiberfocc.com