Hauv cov txheej txheem pulping ntawm kev lag luam papermaking, cov khoom siv raw (xws li ntoo chips thiab cov ntawv pov tseg) feem ntau muaj impurities xws li xuab zeb, gravel, hlau, thiab yas. Yog tias tsis muab tshem tawm raws sijhawm, cov impurities no yuav ua rau kom hnav cov khoom siv tom ntej, cuam tshuam rau daim ntawv zoo, thiab tseem ua rau muaj kev cuam tshuam ntau lawm. Raws li cov cuab yeej tseem ceeb pretreatment, lub slag tawm cais muaj cov haujlwm tseem ceeb ntawmzoo cais hnyav thiab lub teeb impurities ntawm lub pulp. Nws muab cov ntaub so ntswg huv rau cov txheej txheem pulping tom ntej thiab ua haujlwm tseem ceeb txuas ntxiv kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm cov kab ntau lawm.

I. Txoj Cai Ua Haujlwm Tseem Ceeb: Tsav los ntawm Ob Qhov "Density Difference thiab Mechanical Separation"

Kev sib cais logic ntawm slag paug cais yog raws li "qhov sib txawv ntawm qhov sib txawv ntawm impurities thiab pulp" thiab ua tiav cov kev tshem tawm impurity los ntawm nws cov qauv siv tshuab. Cov txheej txheem thev naus laus zis tseem ceeb muaj ob kauj ruam:

1. Heavy Impurity Separation: Tom qab cov pulp nkag los ntawm cov khoom siv qhov chaw nres nkoj, nws thawj zaug ntws mus rau hauv "hnyav impurity cais cheeb tsam". Nyob rau hauv cheeb tsam no, tus nqi ntws ntawm lub pulp slows down. Hnyav impurities xws li xuab zeb, gravel, thiab hlau thaiv, uas muaj ntau dua qhov ntom ntom dua li cov pulp, sai sai rau hauv qab ntawm cov khoom siv vim lub ntiajteb txawj nqus. Tom qab ntawd lawv raug tso tawm tsis tu ncua los ntawm qhov tsis siv neeg lossis phau ntawv slag tawm valve.
2. Lub teeb impurity sib cais: Lub pulp, los ntawm qhov hnyav impurities tau raug tshem tawm, txuas ntxiv mus rau "lub teeb impurity cais cheeb tsam". Cov cheeb tsam no feem ntau yog nruab nrog lub nruas tig los yog cov qauv scraper. Lub teeb impurities xws li cov ntawv yas, thiab hmoov av, uas muaj qhov qis dua lub ntsws, yog kev cuam tshuam los ntawm lub nruas vijtsam lossis scraped tawm los ntawm cov scraper. Thaum kawg, lawv tau sau los ntawm lub teeb impurity qhov hluav taws xob, thaum lub pulp huv si mus rau txheej txheem tom ntej.

II. Cov Txheej Txheem Tseem Ceeb: Cov Ntsiab Lus Tseem Ceeb cuam tshuam rau kev sib cais ua tau zoo

Thaum xaiv thiab siv lub slag paug cais, cov nram qab no tsis yuav tsum tau teem rau kom haum raws li qhov yuav tsum tau ntawm cov kab ntau lawm:

• Kev Ua Tau Zoo: Qhov ntim ntawm cov ntaub so ntswg uas tuaj yeem ua tiav ib lub sijhawm (feem ntau ntsuas hauv m³ / h). Nws yuav tsum tau ua kom haum lub peev xwm ntawm cov khoom siv hauv pem hauv ntej-kawg pulping kom tsis txhob overloading lossis pov tseg ntawm lub peev xwm ntau lawm.
• Kev sib cais Efficiency: Qhov taw qhia tseem ceeb rau kev ntsuas lub impurity tshem tawm cov nyhuv. Kev sib cais ua haujlwm rau hnyav impurities (xws li hlau thiab xuab zeb) feem ntau xav tau ≥98%, thiab rau lub teeb impurities (xws li yas thiab coarse fibers) ≥90%. Kev ua haujlwm tsis txaus yuav cuam tshuam ncaj qha rau cov xim dawb thiab lub zog ntawm daim ntawv.
• Screen Drum Aperture: Txiav txim siab qhov tseeb ntawm kev sib cais ntawm lub teeb impurities thiab raug kho raws li hom raw khoom (xws li, ib qho aperture ntawm 0.5-1.5mm feem ntau yog siv rau cov ntawv pov tseg pulping, thiab nws tuaj yeem ua kom haum rau cov ntoo pulp pulping). Ib qho aperture me me dhau los ua rau muaj qhov thaiv, thaum qhov loj heev yuav ua rau lub teeb pom kev tsis zoo.
• Kev Ua Haujlwm Siab: Lub siab ntws ntawm cov ntaub so ntswg hauv cov khoom siv (feem ntau yog 0.1-0.3MPa). Kev kub siab dhau heev tuaj yeem ua rau cov khoom siv hnav, thaum lub siab tsis tshua muaj zog cuam tshuam rau kev sib cais ceev. Precise tswj los ntawm feed valve yog tsim nyog.

III. Hom Hom: Muab faib los ntawm Cov Qauv thiab Daim Ntawv Thov

Raws li qhov sib txawv ntawm cov ntaub ntawv raw khoom (ntoo pulp, cov ntaub ntawv pov tseg) thiab hom impurity, slag discharge separators feem ntau muab faib ua ob pawg:

• Heavy Impurity Separators (Desanders): Tsom ntsoov rau tshem tawm cov impurities hnyav. Qhov "nruab ntsug desander" muaj cov qauv compact thiab me me hauv pem teb, ua rau nws tsim nyog rau cov kab me me thiab nruab nrab; "kab rov tav desander" muaj lub peev xwm ua haujlwm loj dua thiab muaj peev xwm tiv thaiv kev txhaws, thiab feem ntau yog siv hauv cov ntawv pov tseg loj hauv cov kab ntau lawm.
• Lub teeb Impurity Separators (Slag Separators): Hais txog kev tshem tawm lub teeb impurities. Tus neeg sawv cev raug cai yog "kev tshuaj ntsuam siab hom slag cais", uas ua tiav kev sib cais los ntawm kev sib hloov ntawm lub nruas thiab qhov sib txawv ntawm qhov sib txawv, thiab muaj ob qho tib si tshuaj xyuas thiab tshem tawm slag. Nws yog dav siv nyob rau hauv cov txheej txheem pulping ntawm cov ntaub ntawv huv si xws li ntoo pulp thiab xyoob pulp; Kuj tseem muaj "centrifugal slag separator", uas siv lub zog centrifugal los cais lub teeb impurities thiab tsim nyog rau kev kho mob ntawm cov tawv nqaij siab (concentration ≥3%).

IV. Kev tu txhua hnub: Qhov tseem ceeb rau kev txuas cov cuab yeej siv lub neej thiab ua kom muaj txiaj ntsig zoo

Kev ua haujlwm ruaj khov ntawm cov slag tawm cais yog nyob ntawm kev saib xyuas tsis tu ncua. Cov ntsiab lus tseem ceeb ntawm kev saib xyuas muaj xws li:

1. Tsis tu ncua ntawm qhov screen nruas: Tom qab kaw txhua hnub, xyuas seb lub vijtsam nruas puas raug thaiv. Yog hais tias lub apertures raug thaiv los ntawm fibers los yog impurities, siv ib tug high-pressure dej phom los yaug los yog ib tug tshwj xeeb lub cuab tam los ntxuav lawv kom tsis txhob cuam tshuam qhov kev sib cais efficiency ntawm lub tom ntej no lub lag luam.
2. Txheeb xyuas qhov Sealing ntawm Slag Discharge Valves: Los ntawm qhov hnyav thiab lub teeb impurity tawm li qub yuav ua rau cov ntaub so ntswg thiab txo cov nyhuv sib cais. Nws yog ib qho tsim nyog los xyuas qhov hnav ntawm lub rooj zaum valve txhua lub lim tiam thiab hloov cov gaskets lossis cov valve puas lawm raws sijhawm.
3. Lubrication ntawm cov khoom tseem ceeb: Ntxiv cov roj lubricating tshwj xeeb rau qhov txav ntawm cov khoom siv, xws li cov ncej tig thiab cov kabmob, txhua hli los tiv thaiv kev puas tsuaj los ntawm kev sib txhuam qhuav thiab ua rau lub neej ntev.
4. Saib xyuas kev khiav hauj lwm Parameter: Real-time saib xyuas tsis xws li kev muaj peev xwm, siab, thiab tam sim no los ntawm kev tswj qhov system. Yog tias tsis muaj qhov txawv txav tshwm sim (xws li lub siab nrawm nrawm lossis ntau dhau tam sim no), nres lub tshuab tam sim rau kev tshuaj xyuas kom tsis txhob muaj kev puas tsuaj rau cov khoom siv vim overloading.

V. Kev Txhim Kho Kev Lag Luam: Kev Txhim Kho Kom Zoo Rau "Kev Ua Tau Zoo thiab Kev Txawj Ntse"

Nrog rau kev nce ntxiv rau kev tiv thaiv ib puag ncig thiab kev ua haujlwm hauv kev lag luam papermaking, slag discharge separators tau tsim nyob rau hauv ob lub ntsiab lus qhia:

• Ua haujlwm siab: Los ntawm kev ua kom zoo ntawm kev tsim cov dej ntws (xws li, txais yuav "dual-zone diversion qauv") thiab kev kho dua tshiab ntawm cov khoom siv nruas (xws li, hnav-resistant stainless hlau thiab cov khoom siv molecular siab), kev sib cais ua kom zoo dua ntxiv, thiab cov ntaub ntawv poob qis (txo qhov poob ntawm 3% mus rau qis dua 1%).
• Kev txawj ntse: Integrate sensors and a PLC control system to know the integration of "automatic monitoring, intelligent adjustment, and fault early warning". Piv txwv li, lub sijhawm tiag tiag saib xyuas cov ntsiab lus impurity hauv cov ntaub so ntswg los ntawm lub impurity concentration sensor, thiab tau kho qhov pub siab thiab slag tawm zaus; yog tias cov cuab yeej raug thaiv los yog cov khoom ua tsis tiav, lub kaw lus tuaj yeem ceeb toom tam sim thiab xa cov lus qhia txog kev saib xyuas, txo cov kev cuam tshuam ntawm phau ntawv thiab txhim kho qib automation ntawm cov kab ntau lawm.

Hauv kev xaus, txawm hais tias cov slag paug cais tsis yog cov khoom siv "core" feem ntau hauv cov kab ntau lawm, nws yog "pob zeb" kom ntseeg tau qhov ruaj khov ntawm cov txheej txheem tom ntej thiab txhim kho cov ntawv zoo. Kev xaiv tsim nyog ntawm hom, kev tswj hwm qhov ntsuas, thiab kev saib xyuas kom zoo tuaj yeem txo cov nqi tsim khoom, txo cov khoom siv tsis ua haujlwm, thiab muab kev txhawb nqa tseem ceeb rau kev tsim cov khoom lag luam papermaking.