Kev ua ntawv tau pib hauv Suav teb thaum ub, nrog rau nws cov txheej txheem tau txhim kho thiab nrov los ntawm Cai Lun thaum lub sijhawm Eastern Han Dynasty ua ntej kis mus thoob ntiaj teb. Tau ntau pua xyoo ntawm kev hloov pauv thev naus laus zis, kev ua ntawv niaj hnub no tau tsim los ua ib qho kev lag luam tag nrho thiab tsis siv neeg, suav nrog cov txheej txheem xws li tshuaj pulping thiab tshuab pulping.
Hauv kev ua ntawv niaj hnub no, kev tshem dej ntawm cov pulp yog ib qho ntawm cov kauj ruam tseem ceeb tshaj plaws. Thaum xub thawj cov pulp muaj dej ntau, thiab kev tshem dej yog qhov tsim nyog los ua kom qhuav raws li qhov xav tau rau kev ua tom qab. Cov twj nqus tsev tsim ib puag ncig siab tsis zoo kom tshem tawm cov dej ntau dhau ntawm cov pulp, maj mam nce nws cov khoom khov kom ua tau raws li cov lus qhia. Qhov no tsis yog tsuas yog txhim kho kev ua haujlwm ntau lawm xwb tab sis kuj ua kom ntseeg tau tias cov khoom siv lub cev thiab qhov zoo kawg ntawm daim ntawv.
Txawm li cas los xij, thaum lub sijhawm dewatering, cov dej noo, cov fiber fragments, thiab lwm yam impurities nqa los ntawm lub pulp yuav nkag mus rau hauv lub twj tso kua mis nrog cov cua. Cov impurities no tuaj yeem ua rau kom hnav thiab xeb ntawm cov khoom tseem ceeb ntawm lub twj tso kua mis (xws li rotors, vanes, thiab seals), ua rau cov theem nqus tsev tsawg dua, siv zog ntau dua, thiab txawm tias cov khoom siv tsis ua haujlwm. Kev ua haujlwm tsis ruaj khov ntawm lub twj tso kua mis nqus tsev cuam tshuam ncaj qha rau kev ua haujlwm dewatering thiab kev sib xws ntawm cov ntawv zoo.
Yog li ntawd, cov twj tso kua mis nrog cov khoom siv nqus tsev vacuumcov lim roj-kuayog qhov tseem ceeb. Cov lim roj-kua tau zoo ntes cov dej noo, cov hmoov av fiber, thiab cov khoom me me, tiv thaiv lawv kom tsis txhob nkag mus rau hauv lub twj tso kua mis. Qhov no muab ntau yam txiaj ntsig tseem ceeb:
- Kev tiv thaiv cov khoom tseem ceeb, txuas ntxiv lub neej ua haujlwm ntawm lub twj tso kua mis nqus tsev;
- Kev tswj xyuas kom ruaj khov ntawm cov theem nqus tsev thiab qhov ceev ntawm lub twj tso kua mis, xyuas kom meej tias cov dej ntws tas mus li;
- Txo cov nqi ua tsis tiav thiab cov nqi txij nkawm, txhim kho kev ntseeg siab ntawm lub kaw lus;
- Cov ntawv zoo sib xws, txo qis kev hloov pauv ntawm cov khoom tsim tawm thiab kev pov tseg.
Hauv kev xaus lus, hauv cov txheej txheem dewatering ntawm kev lag luam papermaking, lub luag haujlwm synergistic ntawm cov twj tso kua mis thiab cov lim dej yog qhov tseem ceeb tsis yog rau kev ua haujlwm ntawm cov khoom siv ib leeg xwb tab sis kuj rau kev ua haujlwm zoo, kev ruaj khov, thiab kev siv nyiaj ntawm tag nrho cov txheej txheem tsim khoom. Kev xaiv kom zoo, kev teeb tsa, thiab kev saib xyuas tsis tu ncua ntawmcov lim dej nqus tsevyog cov kev ntsuas tseem ceeb rau cov lag luam uas tsom mus rau kev txhim kho qhov zoo, ua kom muaj txiaj ntsig zoo, thiab ua tiav kev txhim kho kom ruaj khov.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-12-2025
