Txoj kev scouring yog dab tsi:
Raus tag nrho cov tsim pwm ntsia ntawm lub tshuab nqus tsev twj tso kua mis rau hauv lub tank ruaj khov (hauv lub tshuab molding), uas muaj qee qhov concentration ntawm diluted slurry (lub diluted pulp nyob rau hauv lub tank ruaj yog circulated los ntawm lub twj tso kua mis), uas yog nqus los ntawm lub tshuab nqus tsev tsis zoo siab. Nyob rau tib lub sijhawm, qee qhov ntawm cov ntawv fibers yog adsorbed rau ntawm qhov chaw mesh ntawm lub tshuab nqus tsev lim pwm. Tom qab tsim pwm txav deb ntawm qhov zawj ruaj khov, lub tshuab nqus tsev nqus tau nres. Txoj kev no ntawm kev tsim cov ntaub ntub dej yog hu ua slurry method.
Lub uniformity ntawm lub pulp molded khoom (paper txhawb) nyob rau hauv txoj kev ntawm scooping yog feem ntau cuam tshuam los ntawm tej yam xws li lub uniformity ntawm lub tshuab nqus tsev nqus tsev vacuum nyob rau saum npoo ntawm cov pwm, stability ntawm lub pulp concentration, lub sij hawm ntawm lub tshuab nqus tsev nqus tsev vacuum thiab stability ntawm lub tshuab nqus tsev degree. Lub uniformity tsis yooj yim sua. Lub uniformity ntawm ntub billet tsim nyob rau hauv slurry txoj kev mas yog nyob ntawm:
(1) Lub uniformity ntawm lub tshuab nqus tsev vacuum ntawm pwm nto
Qhov loj thiab tsis sib xws ntawm qhov nqus lim qhov ntawm cov pwm yog qhov yuav tsum tau ua ua ntej kom ntseeg tau tias cov tuab tuab ntawm cov tawv nqaij thiab cov ntawv txhawb nqa khoom, zoo ib yam rov ua dua, thiab txhim kho cov txiaj ntsig. Qhov sib xws ntawm lub tshuab nqus tsev nqus ntawm cov pwm saum npoo yog txiav txim siab los ntawm cov qauv pwm thiab cov duab ntawm lub tshuab nqus tsev, qhov loj me me ntawm qhov nqus lim qhov, cov txheej lim dej thiab cov xov tooj ntawm cov meshes.
(2) Stability thiab uniformity ntawm slurry concentration thiab dej pom kev ua tau zoo
Vim hais tias cov kua nplaum nyob hauv lub tank slurry yuav hloov thaum lub sij hawm nqus cov txheej txheem, lub sij hawm nqus yuav tsis hloov, thiab lub thickness ntawm cov ntaub ntub dej yuav hloov. Lub resulting pulp molding thiab ntawv txhawb cov khoom muaj qhov hnyav tsis sib xws, uas cuam tshuam rau kev tawm los. Feem ntau, cov slurry yog nplawm kom tswj tau qhov sib xws ntawm slurry, thiab cov twj thiab cov slurry ntxiv yog siv los tswj cov slurry concentration thiab stability ntawm slurry qib. Txawm li cas los xij, nws tsis yooj yim los tswj cov slurry concentration thiab slurry qib tsis hloov. Qhov no yog qhov shortcoming ntawm slurry nuv ntses txoj kev.
(3) Lub sijhawm nqus tsev vacuum
Thaum cov slurry concentration hloov, lub thickness ntawm cov pulp molding thiab cov khoom txhawb nqa ntawv tuaj yeem hloov kho los ntawm kev hloov lub tshuab nqus tsev nqus pom lub sijhawm. Nws yog ib qho tsim nyog los ntsuas cov ntawv txhawb nqa cov khoom tsis tu ncua, thiab kho lub tshuab nqus tsev nqus lub sij hawm kom tswj tau qhov sib xws ntawm cov khoom thiab ua kom cov qoob loo.
(4) Kev ruaj ntseg ntawm lub tshuab nqus tsev
Txij li thaum muaj ntau tshaj ib lub cuab yeej, feem ntau ntau yam khoom siv ua haujlwm ua ke, yog li lub tshuab nqus tsev yuav tsis sib haum thaum lub tshuab nqus tsev nqus. Tib lub sijhawm sib nqus thiab nqus, thiab lub thickness ntawm cov khoom kuj tsis sib xws, uas yuav cuam tshuam rau cov txiaj ntsig ntawm cov khoom . . Qhov no tsis tuaj yeem tswj tau, thiab nws kuj yog qhov tsis txaus ntawm txoj kev scouring. Lub uniformity ntawm ntub billet tsim nyob rau hauv txoj kev grouting mas yog nyob ntawm:
(1) Lub uniformity ntawm lub tshuab nqus tsev vacuum ntawm pwm nto
Ib yam li cov txheej txheem ntawm kev tshem tawm slurry, lub uniformity ntawm lub tshuab nqus tsev nqus ntawm cov pwm ua kom cov tuab ntawm cov khoom ntawm cov haujlwm sib txawv, uas yog qhov yuav tsum tau ua ua ntej kom ntseeg tau qhov sib xws ntawm txhua yam khoom thiab txhim kho cov txiaj ntsig. It is determined by the mold structure and the shape of the suction cavity, the size of the suction filter hole, the density distribution, the number of filter layers and the number of meshes. Vim nws yog quantitative sizing, qhov siab ntawm pwm txawv, thiab lub sij hawm nqus ntawm qhov sib txawv. Cov pwm yuav tsum tau muab faib raws li qhov siab ntawm qhov nqus lim qhov loj thiab qhov ntom ntom gradient. Cov qauv tsim thiab kev tsim cov pwm pwm yog qhov siab, tshwj xeeb tshaj yog rau cov qauv tsim thiab qhov siab siab dua pwm yog qhov nyuaj dua.
(2) Cov qauv ntawm pwm xovxwm screen ncej yog saws
Vim hais tias nws yog ib tug ntau npaum li cas, thiaj li yuav tshem tawm cov unevenness tshwm sim los ntawm lub sib txawv suction lub sij hawm ntawm txhua qhov chaw vim qhov txawv qhov siab ntawm pwm, yuav tsum tau ib tug tshwj xeeb xovxwm ncej qauv. Cov pwm xovxwm yuav tsum protrude mus rau ib tug tej qhov siab ntawm cov pwm, thiab lub slurry ncej yuav tsum tau muab tso rau sab nraum lub suction nto ntawm lub pwm kom txo tau cov fiber suction pom nyob rau hauv qab, txo lub suction pom lub sij hawm sib txawv ntawm lub sab sauv thiab qis seem ntawm cov pwm, yog li txo qhov tsis sib xws ntawm cov ntaub ntub dej. , Txhim kho cov khoom sib xws.
(3) Txoj kev nqus ntawm cov pwm
Txoj kev nqus ntawm cov pwm concave thiab cov pwm convex yog qhov sib txawv, thiab qhov loj thiab qhov ntom ntom ntawm qhov nqus lim qhov ntawm cov pwm yuav tsum tau hloov kho kom ntseeg tau tias cov khoom sib xws.
(4) Qib ntawm slurry concentration
Kev siv paddle txoj kev tuaj yeem tswj tau qhov sib xws thiab kev ruaj ntseg ntawm paddle khoom concentration zoo. Lub thinner lub pulp concentration, siab dua cov kua theem, ntau uniform suction pom, thiab zoo dua cov uniformity ntawm cov khoom.
(5) Tus nqi ntawm grouting yog dab tsi
Tus nqi ntawm grouting txhua zaus cuam tshuam ncaj qha rau qhov hnyav thiab tus nqi ntawm cov khoom. Kev ua kom muaj nuj nqis tuaj yeem muab faib ua ob hom: lub sij hawm tswj qhov loj me thiab ntau qhov ntim tswj qhov loj me. Txoj kev tswj lub sij hawm- tswj qhov loj me yog qhov yooj yim thiab ua tau, tab sis nws qhov tseeb tsis zoo li qhov ntsuas qhov ntim ntau.
