Hauv cov txheej txheem pulping ntawm kev rov ua dua tshiab thiab rov siv dua ntawm cov ntawv pov tseg, lub hydrapulper yog ib qho khoom siv tseem ceeb uas tsis tuaj yeem tsis quav ntsej, ua haujlwm zom thiab tshem cov fiber ntawm cov ntawv pulp, ntawv tawg, thiab ntau yam ntawv pov tseg. Nws cov kev ua tau zoo cuam tshuam ncaj qha rau kev ua haujlwm ntawm kev pulping tom qab thiab qhov zoo ntawm cov ntawv pulp. Raws li hom khoom siv defibering ntawv pov tseg tseem ceeb, lub hydrapulper tau dhau los ua kev txhawb nqa tseem ceeb rau kev lag luam ntawv kom paub txog kev rov ua dua tshiab ntawm cov khoom siv raw los ntawm nws cov qauv hloov pauv tau yooj yim thiab cov qauv ua haujlwm hloov pauv tau.

Nyob rau hauv cov nqe lus ntawm cov qauv ntaub ntawv, hydrapulpers yog feem ntau muab faib uakab rov tavthiabntsughom. Cov hydrapulpers ntsug tau dhau los ua qhov kev xaiv tseem ceeb rau cov lag luam ntawv me thiab nruab nrab vim lawv qhov chaw me me, kev teeb tsa yooj yim thiab kev saib xyuas, thiab cov txiaj ntsig zoo ntawm cov pulp thaum lub sijhawm defibering. Cov hydrapulpers kab rov tav yog qhov tsim nyog dua rau cov kab ntau lawm pulping loj, muaj peev xwm siab. Lawv cov qauv kab rov tav tuaj yeem haum rau ntau cov khoom siv raw, thiab cov khoom sib xyaw thiab shearing efficiency thaum lub sijhawm defibering yog siab dua, ua rau lawv tsim nyog rau kev ua cov laug cam pulp loj lossis cov ntawv pov tseg batch. Kev faib ntawm ob daim ntawv qauv tso cai rau hydrapulpers kom raug xaiv thiab teeb tsa raws li lub peev xwm tsim khoom thiab cov qauv cog ntawm cov lag luam ntawv.

Raws li qhov concentration ntawm cov pulp thaum lub sijhawm ua haujlwm, hydrapulpers tuaj yeem faib uatsis sib xwsthiabkev sib xws siabhom. Qhov concentration ntawm cov pulp ntawm cov hydrapulpers uas tsis tshua muaj zog feem ntau tswj tau ntawm 3% ~ 5%. Cov txheej txheem defibering vam khom kev tig ceev ntawm lub impeller los tsim hydraulic shearing force, uas yog qhov tsim nyog rau kev ua cov ntaub ntawv pov tseg yooj yim defibered. Qhov concentration ntawm cov pulp ntawm cov hydrapulpers uas muaj zog siab tuaj yeem ncav cuag 15%. Defibering yog ua tiav los ntawm kev sib txhuam, extrusion ntawm cov ntaub ntawv nyob rau hauv qhov concentration siab thiab kev sib xyaw ua ke ntawm lub impeller. Nws tsis tsuas yog txo cov dej siv tab sis kuj tseem khaws cov fiber ntev hauv cov ntawv pov tseg thaum defibering, txhim kho qhov zoo ntawm kev siv dua ntawm pulp, thiab yog cov khoom siv nyiam rau cov txheej txheem txuag hluav taws xob tam sim no.

Los ntawm qhov kev xav ntawm hom kev ua haujlwm, hydrapulpers suav nrogtas mus lithiabua pawghom. Cov tshuab hydrapulpers txuas ntxiv tuaj yeem paub txog kev pub cov khoom siv raw thiab kev tso tawm ntawm cov pulp tas mus li, uas yog qhov tsim nyog rau cov kab tsim khoom pulping tas mus li, tuaj yeem txhim kho qhov kev ua haujlwm tag nrho, thiab ua tau raws li qhov xav tau ntawm cov lag luam ntawv loj. Cov tshuab hydrapulpers batch txais yuav hom kev ua tiav batch: cov khoom siv raw raug muab tso rau hauv qhov khoom siv rau kev tshem tawm fiber, thiab tom qab ntawd cov pulp raug tso tawm ib zaug. Txoj kev no yooj yim rau kev tswj hwm qhov zoo ntawm txhua pawg ntawm cov pulp, tsim nyog rau cov xwm txheej tsim khoom me me thiab ntau yam pulp, thiab siv dav hauv cov txheej txheem pulping ntawm cov ntawv tshwj xeeb.

Kev faib tawm ntau yam ntawm hydrapulpers qhia txog kev ua kom zoo dua ntawm kev tsim khoom siv los ntawm kev lag luam ntawv raws li kev xav tau ntau yam. Nyob rau hauv kev lag luam kev txhim kho ntawm kev ua ntawv ntsuab thiab kev siv cov peev txheej rov ua dua tshiab, hydrapulpers tseem tab tom txhim kho mus rau kev ua haujlwm siab, txuag hluav taws xob thiab kev tswj hwm ntse. Txawm hais tias nws yog kev txhim kho qhov sib dua ntawm cov qauv lossis qhov kev ua kom zoo dua ntawm cov txheej txheem defibering, nws lub hom phiaj tseem ceeb yog ib txwm hloov kho kom zoo dua rau cov kev xav tau ntau yam ntawm cov ntawv pov tseg pulping thiab tso lub hauv paus khoom siv ruaj khov rau kev txhim kho kev lag luam ntawv.

Cov Lus Qhia Txog Kev Sib Piv ntawm Cov Hom Hydrapulpers Sib Txawv