Kev faib tawm ntawm lim xov xwm

- Aug 18, 2017 -

Cov khoom ntxeem tau, uas yog siv rau kev sib cais ntawm cov khib nyiab, yog hu ua cov dej nruab nrab. Nws yog qhov tseem ceeb ntawm cov lim, uas txiav txim xyuas qhov kev sib cais thiab kev ua haujlwm ntawm kev lag luam, thiab cuam tshuam ncaj qha rau lub zog thiab lub zog ntawm lub lim.

Muaj ntau hom xov xwm lim tawm hauv kev lag luam, uas muab faib rau hauv nruab nrab lub nruab nrab, nruab nrab nruab nrab thiab xoob yas lim.

• yooj yim lim kev tawm xov xwm:

◉ Hlau pom nruab nrab

Cov ntaub ntawv uas tsis yog xim hlau uas tsis yog xim hlau: cov ntaub paj rwb, ntaub ntaub, cov ntaub qhwv ntaub, cov ntaub yas hluav taws xob, ntaub npog ntsej muag, ntaub npuag,

O hlau, tsis-metallic mixing nruab nrab

• nrhav kev lim dej nruab nrab

O sintering hlau mesh, hlau fiber sintering muaj, hmoov sintering khoom, porous ceramics, sintered porous yas, sintered txhuas oxide, iav lim nruab nrab

• xom cov xov xwm tawm

O diatomite, nthuav perlite hmoov, cellulose, xuab zeb, charcoal hmoov, tsis haus

Cov mechanism ntawm pom yog muaj feem xyuam rau txoj kev lim pom. Lim nruab nrab rau cov lim dej lim dej lim dej kom pom zoo yuav tsum ua raws li qhov tshwj xeeb ntawm cov hom kev lim dej: cov qauv ntawm lub nruab nrab yuav lav tau pib lim tau cov xim yooj yim dua "choj" nyob rau hauv nruab nrab ntu, cov nplua los ntawm kev siv yaig (lim); Qhov ratio ntawm tuav ib feem nyob rau hauv lub pore ntawm medium yog tsawg, thiab cov xov xwm yog qhov tsawg tshaj plaws. Cov khoom qab zib lim tau yooj yim tshem tawm tag; Tus qauv ntawm dielectric facilitates tu thiab tsim dua tshiab.Thaum siv lim ncuav mog qab zib lim nruab nrab lub ntsiab lim ntaub, lim, lim, sab lim, thiab lwm yam., Sib sib zog nqus siv los ua dej nruab nrab, hais txog cov qauv kom tau raws li kev cuam tshuam kev cuam tshuam kev cuam tshuam, tau nres rau kev tso tseg tog; Lub txaj yuav tsum muaj lub peev xwm qis kom qeeb cov txheej txheem ntawm cov khoom khi rau kom ntev mus rau lub voj voog khiav haujlwm.

Cov khoom siv ntawm txhua yam kev lim kev yog: Cov yam ntxwv pom zoo tshaj plaws (me dua ua hauj lwm, muaj qhov tseeb ntawm trunnion); Cov khoom siv zoo thiab lub cev muaj zog (siab zog, ntsaum, softness thiab wearability dua), ib puag ncig, kev ruaj khov zoo, kev tiv thaiv kev kub hnyiab, kub thev taus thiab microbe, thiab lwm yam), yooj yim huv, txuas ntxiv, pheej yig, txhim khu kev qha qhov chaw.

Feem ntau siv cov khoom nruab nrab thiab nws cov khoom loj

1.3.1 lim ntaub

Qhov no yog qhov feem ntau siv nyob rau hauv kev lag luam thiab feem ntau dav siv lim lim. Cov ntaub lim ntaub muaj ntaub qhwv ntaub thiab cov ntaub qhwv tsis muaj ntaub qhwv. Cov ntaub ntawv yog cov khoom fibers (paj rwb, ntaub plaub, ntoo, daim kab xev) lossis hluavtaws. Kev lim pom ntawm cov ntaub ntaub lim yog txiav txim siab los ntawm cov khoom siv, cov fib ntau nws thiab tom qab ua tiav.

(1) ntaub ntaub lim ntaub

Cov xim lim dej yog cov khib nyiab los ntawm peb ntau hom phom: ib qho hlua khau (ib qho hlua khau), phuam ntev (fiber-fiber fiber yarn) thiab staple fiber (poly yarns) .Txoj filaments feem ntau yog 0 diameter.16-0.32 1) Ib qho ntaub ntawv pov thawj, nws cov ntaub lim ntaub sib tov muaj ib qhov chaw qhuav, qhov chaw me me ntshiab, kev ua haujlwm, clogging lub me tshaj, yooj yim los ntxuav thiab zoo tshaj plaws slag paug qhov ua tau zoo, tab sis nws ntes feem hla ntawm qhov ntxiab, kev lim, kev siv tsis zoo. Qhov kev sib txawv ntawm kev sib cais tau cuam tshuam los ntawm kev sib cais ntawm kev raug tshem tawm kua nrog ntau qhov kev faib tawm. Cov ntaub ntawv xov paj yog txig ntawm ob qho ntawm cov nyom lo nyoos, uas yog khov rau hauv ib daim ntaub lim. Lub zog tensile zoo, kev ceev retrofit ntawm qhov kev kawm yog qhov zoo tshaj qhov ntawm tus xaim ib zaug, thiab qhov qhev tawm ntawm kev ua haujlwm yog me ntsis tuaj. Kev siv pob zeb yog siv cov paj rwb, cov ntaub nplaum hluavtaws los yog cov khoom siv hluavtaws ua hluavtaws sib tw rau hauv qhov system, vim tias nws cov khoom fiber ntau thiab kev ua haujlwm ntawm cov khoom ua tau zoo, cov sealing yog qhov zoo, tabsis qhov kev tsis zoo yog qhov nqus ntawm qhov thaiv, kev ua tau yog pluag.

Nws muaj peb daim ntaub: dawb, twill thiab satin. Feem ntau hais lus, cov ntaub qauv ntawm cov ntaub qhwv to taub yog cov lus sib cog lus thiab cov me me, yog li qhov kev cuam tshuam cov tshuaj zoo, qhov lim thiab lub neej ua haujlwm ntev ntev thiab qhov pheej yig dua. Qhov tsis zoo yog tias nws loj tshaj qhov thaiv, kev txhaws kom yooj yim, thiab kev paug phem. Cov pore ntawm satin weave ntaub yog lub loj tshaj, me dua cov tsis kam, tsis yooj yim rau thaiv, lub slag discharging kev ua tau zoo. Txawm li cas los, lub peev xwm ntawm kev ceev nrooj tsis tshua muaj tsawg, lub lim yog loj thiab cov lim nyhuv yog pluag. Muaj ntau yam khoom ntawm cov lim limil yog nyob hauv nruab nrab, qhov peev xwm tiv thaiv kev sib tw yog qhov muaj zog heev, qhov pom pom yog qhov loj, lub neej yog qhov ntev tshaj, yog li nws siv dav.

Cov nram no yog ib qho kev qhia luv luv ntawm cov ntaub qhwv siv cov ntaub ntawv sib txawv ntawm cov ntaub ntawv sib txawv.

Paj rwb:

Cov ntaub lim los ntawm cov paj rwb zoo tib yam yuav tsum tau sib cais ntawm lub nruab nrab lim phom tsis siab, qab lim kua qaub qis dua 20 thiab alkaline lim hauv qab 10. Hauv cov ntaub ntawv alkaline, cov paj rwb ntaub lim ua rau o. Muaj qhov contraction nyob hauv dej thiab cov tshuaj kua txhuas sulfate. Yog li no, txoj kev daws teeb meem yuav tsum tau soaked hauv kev daws ua ntej siv. Txoj kev tuaj yeem tiv thaiv ntawm paj rwb ntaub lim pwm tsis muaj zog, thiab nws yog qhov tsim nyog rau pretreatment ntawm tooj liab ammoniac tov rau lub ntees kom siv rau kev loj hlob ntawm microblight thiab mildew, thiab qhov yuav ua kom zoo tuaj.

Cov ntaub ntawm cov ntaub ntawm nitrification yog cov tawv tawv, yooj yim paug cwj pwm, concentrated sulfuric acid, nitric acid thiab mixed acid thiab hydrochloric acid kua, zinc chloride kua muaj stability, tab sis tsis alkali. Hauv cov khoom siv tawm thiab cov organic solvent, yooj yim rau corroded. Nitrocellulose daim ntaub muaj qhov txaus ntshai, uas txwv tsis pub nws siv.

Ntaub ntaub ntaub:

Nws yog feem ntau yog los ntawm cov yaj yaj, thiab qhov kev tawm tsam ntawm cov kua qaub yog qhov zoo dua ntawm daim ntaub paj rwb, thiab lub neej ntawm daim ntaub yog nyob ze rau kev siv lub neej ntawm paj rwb ntaub rau cov khoom tsis zoo rau kev kho 5% mus rau 6 % cov concentrated inorganic acid khoom. Cov nyhuv ntawm kub thiab alkali thiab kev puas tsuaj ntawm sodium hypochlorite. Ntaub ua los ntawm cov plaub hau plaub hau muaj qhov ruaj khov ntawm inorganic acid. Cov ntaub ntaub plaub yog tsawg dua cov paj rwb hauv lub zog thiab kev tuav pov hwm ntawm cov qoob loo, thiab tus nqi ntau dua li cov ntaub ntawm paj rwb.

PVC:

Cov kev ua haujlwm ntawm cov kua qaub, ntsev thiab cov ntxhia roj yog ruaj khov. Tab sis cov oxidant, cov concentration ntawm alkaloids yuav raug rhuav tshem. Muaj ib tug saum npoo, uas yog zoo rau slag paug, tab sis tsuas yog siv tau nyob rau hauv 60.

Polypropylene daim ntaub:

Strong acid tsis kam (organic thiab inorganic), alkaline corrosion thiab elasticity. Qhov kub no yuav muaj txog li 110 thiab tus nqi tsawg tsawg, tab sis lub zog ntawm daim ntaub yog qaug zog, uas yog siv rau cov lim fiber ntau thiab cov khoom siv sib luag ntxig. Lub ntaub polypropylene muaj ib tus nplaim, mos zoo nkauj thiab zoo slag paug. Lub cuab ntxhiab ntawm lub cev yog tsawg, uas tuaj yeem tiv taus acid, alkali thiab muaj oxidant corrosion thiab microbe nkaus. Tab sis soluble nyob rau hauv xylene, tetrachloroethane hnyav, hygroscopic tsawg, ntawm 0.Below 3%, kev nyab xeeb siv kub yog qis tshaj 100 100 hauv qab C, nquag siv pigment, xim lim.

Polyamide (nylon 66) daim ntaub:

Nyob rau hauv ntub dej, nws muaj zog, lub neej ntev, zoo heev hnyav thiab thermal stability zoo. Nws tuaj yeem siv hauv qhov kub ntawm 120-150.Kev tshuaj lom neeg ntawm alkaline pom pulp zoo dua, tabsis nws siv tau rau 100 DCS, tab sis nyob hauv nruab nrab cov kua qaub, tsuas yog cov khoom siv dilute acid yuav ruaj khov hauv qhov kub thiab txias.

Polyester ntaub:

Siab zog, hloov tau, zoo flax tsis kam, ntev lub neej, superior particle retention. Tshuaj stability tuaj yeem ua kom tawv nqaij qaub ncaug. Nws yog me ntsis tsawg alkaline, tab sis superior rau acrylonitrile fiber. Polyester npog muaj lub siab ua rau kev ua haujlwm microbial. Polyester lim ntaub ntau hom dav siv. Ob tug dej - cov nroj tsuag kua qaub nyob hauv Suav teb yog sib cais los ntawm phosphoric acid slurry thiab feem ntau siv polyester 734 #

Cov ntaub lis loos:

Nws yog li ntawm 85% acrylonitrile polyacrylate thiab vinyl pyridine. Nrog thermal stability thiab hnav tsis kam, cov inorganic acid muaj cov tshuaj tua tsis haum zoo thiab yog yaj hauv cov concentration ntawm sulfuric acid nrog tshaj 80% concentration. Lub hauv paus muaj zog ntawm lub hauv paus qis thiab chav kub kuj muaj qee qhov kev tawm tsam, nws yuav tsis siv los ntawm cov hnyav, roj, nruab nrab ntsev thiab feem ntau cov kua qaub ntsev.

Grey daim ntaub:

Nws yog tsim los ntawm polyacrylonitrile fiber ntau thiab polyester fiber. Nws muaj ib qhov chaw zoo heev thiab siab zog txhua yam. Nws tsis yog thaiv los ntawm cov kuab paug thiab nws yog ib qho yooj yim uas tawm slag. Cov tshuaj lom neeg ntawm ob hom phom. Nws yog tshwj xeeb tshaj yog haum rau pom ntawm acid gypsum slurry nyob rau hauv cov dej ntxuav thiab phosphoric acid nroj. Raws li txawv teb chaws cov lus ceeb toom, nws txoj hauj lwm lub neej tseem ntev, yog ib daim ntaub lim dej ntxim nyiam heev.

(2) uas tsis yog-ntaub qhwv

Siv lub cua sov txoj kev, cov fibers ntau nrog ua ke nrog cov tawv reagents thiab cov kuab tshuaj yog ua los ntawm 0.2-2-2 tuab ntawv ntawm daim ntawv lim ntaub. Cov ntaub so ntswg ntawm daim ntaub no tsis yog txoj cai, tiam sis txoj kev sib tw thiab kev kaw ntom ntom ntom ntom nti, nws cov khov khaus yooj yim dua li cov xim lim ntaub, muaj zog tshaj cov ntawv lim, thiab porosity yog thicker dua cov ntawv lim, tus ua piv hloov lim ntawv. Cov ntaub ntawv tsis muaj ntaub qhwv twb tau muab siv rau hauv lim xovxwm thiab kab rov tav disk, siv los ua kom pom tseeb thiab lim cov khoom sib xyaw hauv qis-concentration tshem tawm cov kua. Xws li haus, kua mis, kua roj vanish, lubricants thiab pom ntawm cog paj. Pom pom ntawm cov ntaub ntawv uas tsis yog-cov ntaub qhwv ntsej muag tsis muaj kev ntxhib ntxoo, piv txwv li ntawm daim ntaub ntub dej ntau dua 100, thiab nws cov txheej txheej intercepts feem ntau cov dispersible.

(3) tom qab ua tiav cov ntaub lim

Yuav kom txhim kho cov khoom sib txuas thiab lub cev thiab cov khoom siv dag zog ntawm cov ntaub lim, cov ntaub npog tau tawg thiab ua tiav. Nws txoj kev ua yog:

Calendering: cov ntaub ntim cov ntaub qhwv yog nyob rau hauv qhov kub taub hau, kom lub npoo ntawm cov ntaub qhwv du thiab qhov porosity ntawm cov xov paj yuav txo, thiaj li los txhim kho lub peev xwm ntawm lim ntaub mus ntes thiab tawm cov khoom. Lub lim ntaub zog tom qab kev cog lus me ntsis txo.

Raising: nyob ntawm ib sab ntawm lub hnab ntaub ntaub siv nrog lub iav steel zuag ntaub txhuam kom cov xov paj siv ntaub nplaum nplaum tsim cov ntaub nplaum zoo, ua kom lub cev muaj peev xwm ua kom yooj yim dua, ua kom zoo dua, .

Kub ntxuag ua: qhov no txwv rau hluavtaws fiber ntau lim ntaub. Lub hom phiaj yog los txhim kho lub thermal stability los yog kev ua tau lub zog ntawm cov ntaub ntaub lim kom thiaj ua rau nws tsim dua rau kev lag luam ntawm tus neeg mob siab dua. Nws yog ib qho kub txheej txheem rau cov ntaub dub.

1.3.2 mesh

Mesh yog woven lim nruab nrab, thiab nws cov ntaub ntawv tseem ceeb yog cov hlau, cov neeg uas tuaj yeem ua txhuam cov hlau thiab cov hlau, xws li cov hlau tsis muaj steel, tooj dag, ntxhuav nickel copper alloy, npib xiav, nyiaj thiab rau txhua tus tuaj yeem siv ua khoom siv hlau . Tseem muaj ib lub lim ua los ntawm cov yas. Vim tias cov khoom siv hlau, ces lub ntsej muag mesh yog du, hnav-resistant, resistant rau corrosion thiab kub kub resistant, yeej tsis ua contraction, ncab, tsis yooj yim yuav particle plugging, yooj yim los ntxuav, tauj dua, tshaj fiber lim ntaub rau lub neej ua haujlwm ntev. Tsuas yog siv sij hawm ib zaug xwb kim kim, tab sis tus nqi khiav qis dua qis dua daim ntaub lim.

Kuj tseem muaj kev sib tw thiab sib tw.

Ntsuas yuav muab ntsia tau ncaj qha rau ntawm nplooj lim los yog lub tshuab nqus tsev lim lub taub hau kom lim. Nws kuj siv tau los ua daim ntaub thiab lim ntawv txhawb nqa. Nyob rau lub sij hawm no, lub lim yuav tsum tau dov nrog rau cov menyuam los ua kom nws lub ntsej muag du, thiab ces nruab nrog lim xov xws li lim ntaub, yog li ntawd raws li kom tsis txhob cuam tshuam kev txhawb lim nruab nrab. Peb tam sim no muaj tooj, tooj liab, tooj liab, stainless hlau, carbon steel thiab lwm yam ntaub ntawv.

1.3.3 lim taub

Cov khoom siv hluav taws xob (xws li polyacrylonitrile fiber, nylon, polypropylene, lwm yam.) Los yog cov ntaub ntim cov nplaum tsis muaj txoj cai, ntxiv los sis tsis ntxiv cov ntaub nplaum (kub kua nplaum), tom qab compaction kuj, ua txawv thickness ntawm daim pam. Nruab ntawm lim xovxwm los yog lub nruas nqus lim. Thaum ib lub thawv hlau pleev siv los ua ib lub lim lim. Lub lim dej ntawm lub lim lim yog pom meej heev. Khoom siv hluav taws xob lim muaj hluav taws xob zoo muaj qhov zoo ntawm kev tiv thaiv kev txhuam tawm, mildew thiab retention retention.

1.3.4 lim ntaub lim

Filtering liner yog kev luam qauv ntawm asbestos thiab cellulose lim nruab nrab, cov thickness ntawm 2 ~ 5 hli, fiber ntau ntawm 200 ~ 250, lwm qhov nrog ib txoj kab uas muaj 20 ~ 30 ntawm cellulose fiber los txhawb lub cev, asbestos fibers uas tshwm sim tawm qhov chaw, yog siv los lim tshuab, xws li diatomite hais, nyob rau hauv uas txhaws tau txhim kho lub porosity ntawm lev. Vim hais tias porosity ntawm lim liner yog heev me me, nws yog tsuas yog siv rau precision filtration, uas yuav siv tau los nrog tshem tawm cov dej uas muaj cov khib nyiab tsis tshua muaj thiab cov khoom me me.

1.3.5 lim membrane (xim porous porous)

Nrog cellulose ester, polyvinyl chloride, polyethylene los yog polytetrafluoroethylene, lub thickness yog 0 los ntawm tej yam process.2 ~ 150um, aperture 0.3 ~ 10um nyias zaj ntsia ntsia tshwj xeeb khoom siv. Lub lim membrane ntawm no ntxeem tau membrane ncav cuag 0.1 um. Nws yog tsuas yog siv nyob rau hauv kev kho mob ntawm kev kho mob kev lag luam thiab biochemistrum dej phwj kho.

1.3.6 xov xwm tawv heev (tsis yeem)

Qhov nruab nrab ntawm qhov ntxeem tau ntxig heev muaj xws li qhov ntxaij ceramic, hlau ceramics, porous sintered yas, hlau fiber sintering muaj, ntau txheej hlau sintering network, thiab lwm yam.

Lawv yog tsim los ntawm ceramic, hlau thiab yas hmoov uas yog sintered ntawm high kub. Los ntawm cov hmoov zoo me me, qhov kub thiab txias, lub siab, lub sij hawm thiab ntau yam khoom siv, kev tswj ntawm cov mis yuav siv los ua qhov khoom ntawm ntxeem tau, permeable, porosity thiab ntau daim. Lub thickness yog feem ntau siab tshaj 20 hli (lub thickness ntawm sintered hlau yog feem ntau 1.6 hli) .Cylinder (nrog rau tubular) yog tsim rau siab pom, thiab lub phaj yog siv rau lub tshuab nqus tsev vacuum filtration pom. Txoj kev lim pom ntawm cov ntxeem xov xwm feem ntau yog tsim rau kev sib sib zog nqus pom, tab sis nws kuj siv tau rau qhov pom ntawm qhov chaw. Vim tias lawv tsis zoo, qhov kev hloov ntawm lub siab hloov ntawm qhov pom tau muaj feem xyuam rau cov khoom qab zib lim, thiab nws lub qhov khais tuaj yeem los ntawm ob peb txhiab mus rau ib qho, feem ntau ntawm nws yog siv rau kev pom tseeb.

Cov kua txaj nrog cov kab nrig ceramics thiab corundum ceramic ob hom, cov qub yog cov khoom siv tseem ceeb, cov av qwj, cov tom kawg yog cov hmoov av alumina, nws yuav nrog cov thermosetting cob thiab sib xyaw kom haum rau qhov yuav tsum tau, calcined ntawm 1400 DHS C qhov cub . Nrog high kub thiab corrosion tsis kam, lub hauv paus corundum yog ruaj rau concentrated inorganic acid, tab sis nws yog tsis ruaj tsis khov rau lub ntshiab daws ntawm qaug zog alkaline thiab alkaline ntsev. Ordinary ceramics tuaj yeem tiv taus thin, tuab inorganic acids thiab lawv cov kua dej ntsev. Txawm li ntawd los, txoj haujlwm ntawm alkaline kua tsis ruaj khov. Cov kab txaij yog siv dav hauv cov pa roj purifying (xws li cua pom nyob rau hauv cov tsim nitrate) thiab kuj yog qhov tseemceeb ntawm cov duab uas tsis haum thiab acidic saline daws.

Hlau fiber ntau ntxhov siab:

Nws yog ib yam tshiab ntawm cov khoom siv lim, thiab pom meej ntawm qhov khoom yog 3-100 micron. Nws yog dav siv nyob rau hauv roj av, tshuaj, tshuaj fiber, aviation thiab aerospace, thiab yog ib qho khoom siv high-tech irreplaceable


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