Historyofdevelopment
InancientChina,filtrationtechnologywasusedinproduction,andpapermadeofplantfiberswasalreadyavailablein200BC.In105AD,CaiLunimprovedthepapermakingmethod.Duringthepapermakingprocess,hedippedplantfiberpulpondensethinbamboocurtains.Thewaterisfilteredthroughthegapsofthebamboocurtain,andathinlayerofwetpaperpulpisleftonthesurfaceofthebamboocurtain,anditbecomespaperwhenitdries.
Theearliestfiltrationwasmostlygravityfiltration.Later,pressurefiltrationwasusedtoincreasethefiltrationspeed,andthenvacuumfiltrationappeared.Therotarydrumvacuumfilterinventedatthebeginningofthe20thcenturyrealizedthecontinuityofthefiltrationoperation.Sincethen,varioustypesofcontinuousfiltershaveappearedoneafteranother.Intermittentlyoperatedfilters(suchasplateandframefilterpresses,etc.)havebeendevelopedbecausetheycanrealizeautomatedoperation,andthefilteringareaisgettinglargerandlarger.Inordertoobtainfilterresiduewithlowmoisturecontent,mechanicallypressedfiltershavebeendeveloped.
Princip práce
Filtr (26 fotografií)
Whenthefilterisworking,thewatertobefilteredentersthroughthenozzleandflowsthroughthefilterscreen,Throughtheoutlettoenterthepipelinerequiredbytheuserforprocesscirculation,theparticulateimpuritiesinthewateraretrappedinsidethefilter.Withsuchacontinuouscycle,moreandmoreparticlesareintercepted,andthefilteringspeedisslowerandslower.However,theimportedsewageisstillcontinuouslyentering,andthefilterholeswillbecomesmallerandsmaller,therebycreatingpressurebetweentheinletandtheoutlet.Whenthelargedifferencereachesthesetvalue,thedifferentialpressuretransmittertransmitstheelectricalsignaltothecontroller,andthecontrolsystemstartsthedrivemotortodrivetheshafttorotatethroughthetransmissionassembly.Atthesametime,thesewageoutletisopenedanddischargedfromthesewageoutlet.Aftercleaning,thepressuredifferencedropstotheminimumvalue,thesystemreturnstotheinitialfilteringstate,andthesystemoperatesnormally.Thefilterconsistsofahousing,amulti-elementfilterelement,abackwashmechanism,andadifferentialpressurecontroller.Thetransversepartitionintheshelldividestheinnercavityintoupperandlowercavities,andtheuppercavityisequippedwithmultiplefilterelements,whichmakesthefilterspacesufficientandsignificantlyreducesthevolumeofthefilter.ThelowercavityisequippedwithbackwashingSucker.Whenworking,theturbidliquidentersthelowercavityofthefilterthroughtheinlet,andthenenterstheinnercavityofthefilterelementthroughthepartitionhole.Theimpuritieslargerthanthegapofthefilterelementareintercepted,andthecleanliquidpassesthroughthegaptotheuppercavity,andisfinallysentoutfromtheoutlet.Thefilteradoptsahigh-strengthwedge-shapedfilterscreen,whichautomaticallycleansthefilterelementthroughpressuredifferencecontrolandtimingcontrol.Whenimpuritiesinthefilteraccumulateonthesurfaceofthefilterelementandcausethepressuredifferencebetweentheinletandoutlettoincreasetothesetvalue,orthetimerreachesthepresettime,theelectriccontrolboxsendsasignaltodrivethebackwashingmechanism.Whenthebackwashsuctioncupportisdirectlyoppositetothefilterelementinlet,thedrainvalveisopened,andthesystemdischargespressureatthistime.Anegativepressurezoneappearsontheinsideofthesuctioncupandthefilterelementwhoserelativepressureislowerthanthewaterpressureontheoutsideofthefilterelement,forcingpartofthenetcirculatingwaterfromtheoutsideofthefilterelement.Flowingintotheinnersideofthefilterelement,theimpurityparticlesadsorbedontheinnerwallofthefilterelementflowintothedrumwithwaterandaredischargedfromthedrainvalve.Thespeciallydesignedfilterscreenproducesasprayeffectinsidethefilterelement,andanyimpuritieswillbewashedawayfromthesmoothinnerwall.Whenthepressuredifferencebetweentheinletandoutletofthefilterreturnstonormalorthetimersettingtimeisover,thematerialflowscontinuouslyduringthewholeprocess,andthebackwashingconsumeslesswater,realizingcontinuousandautomatedproduction.Filtersarewidelyusedinthefieldsofmetallurgy,chemicalindustry,petroleum,papermaking,medicine,food,mining,electricpower,andurbanwatersupply.Suchasindustrialwastewater,circulatingwaterfiltration,emulsionregeneration,wasteoilfiltrationtreatment,continuouscastingwatersysteminthemetallurgicalindustry,blastfurnacewatersystem,high-pressurewaterdescalingsystemforhotrolling.Itisanadvanced,efficientandeasy-to-operateautomaticfilterdevice.Thewatertobetreatedbythefilterentersthebodythroughthewaterinlet,andtheimpuritiesinthewateraredepositedonthestainlesssteelfilterscreen,resultinginapressuredifference.Thepressuredifferencebetweentheinletandoutletismonitoredbythepressuredifferenceswitch.Whenthepressuredifferencereachesthesetvalue,theelectroniccontrollerfeedsthehydrauliccontrolvalveanddrivesthemotorsignal.Aftertheequipmentisinstalled,thetechnicianswilldebugandsetthefiltertimeandcleaningconversiontime.Thewatertobetreatedentersthebodyfromthewaterinlet,andthefilterstartstoworknormally.Whenthepresetcleaningtimeisreached,theelectriccontrollerwillgivethehydrauliccontrolvalve,Drivethemotorsignal,triggerthefollowingactions:themotordrivesthebrushtorotatetocleanthefilterelement,whilethecontrolvalveopenstodischargethesewage.Theentirecleaningprocessonlylastsfortensofseconds.Whenthecleaningisover,thecontrolvalveisclosedandthemotorstopsrotating.Thesystemreturnstoitsinitialstateandbeginstoenterthenextfiltrationprocess.Theinsideofthefilterhousingismainlycomposedofcoarsefilterscreen,finefilterscreen,suctionpipe,stainlesssteelbrushorstainlesssteelsuctionnozzle,sealingring,anti-corrosioncoating,rotatingshaftandsoon.
Filtr (10 listů)
Usefiltermediatodividethecontainerintoupperandlowerchamberstoformasimplefilter.Suspensionisaddedtotheuppercavity,andentersthelowercavitythroughthefiltermediumunderpressuretobecomefiltrate.Thesolidparticlesaretrappedonthesurfaceofthefiltermediumtoformfilterresidue(orfiltercake).Duringthefiltrationprocess,thefilterresiduelayeronthesurfaceofthefiltermediumgraduallythickens,theresistanceoftheliquidthroughthefilterresiduelayerincreasesandthefiltrationspeeddecreases.Whenthefilterchamberisfulloffilterresidueorthefilteringspeedistoolow,stopfiltering,removethefilterresidue,andregeneratethefiltermediumtocompleteafiltrationcycle.
Theliquidmustovercometheresistancetopassthroughthefilterresiduelayerandthefiltermedium,sotheremustbeapressuredifferenceonbothsidesofthefiltermedium,whichisthedrivingforceforfiltering.Increasingthepressuredifferencecanspeedupthefiltration,butthedeformedparticlesunderpressurewilleasilyblocktheporesofthefiltermediumwhenthepressuredifferenceislarge,andthefiltrationwillslowdowninstead.
Suspensionfiltrationhasthreemethods:filterresiduelayerfiltration,deeplayerfiltrationandsievingfiltration.
①Filterresiduelayer:thefiltermediumcanonlyretainlargesolidparticlesintheinitialstageoffiltration,andsmallparticlespassthroughthefiltermediumwiththefiltrate.Aftertheinitialfilterresiduelayerisformed,thefilterresiduelayerplaysamajorroleinfiltering.Atthistime,bothlargeandsmallparticlesareretained,suchasthefiltrationofaplateandframefilterpress.
②Deepfiltration:thefiltermediumisthicker,thesuspensioncontainslesssolidparticles,andtheparticlesaresmallerthantheporesofthefiltermedium.Whenfiltering,theparticlesareadsorbedintheporesafterentering,suchasthefiltrationofporousplastictubefiltersandsandfilters.
③Screening:Thesolidparticlestrappedbyfiltrationarelargerthantheporesofthefiltermedium,andtheinsideofthefiltermediumdoesnotabsorbsolidparticles.Forexample,arotatingdrumfilterscreenfiltersoutcoarseparticlesinsewage.Intheactualfiltrationprocess,thethreemethodsoftenappearsimultaneouslyoroneafteranother.
Filtrationspeed
Whenthesolidparticlesinthesuspensionarelargeandtheparticlesizeisuniform,theporesofthefilteredfilterresiduelayerarerelativelyunobstructed,andthefiltratepassesthroughthefilterresiduelayeratahigherspeed.Theapplicationofcoagulanttogatherthefineparticlesintolargeragglomeratesisbeneficialtoincreasethefiltrationspeed.
Forsuspensionswithfastsolidparticlessettlingspeed,applyafilterthatfeedsonthetopofthefiltermediumtomakethefiltrationdirectionconsistentwiththedirectionofgravity.Thecoarseparticlessettlefirst,whichcanreducethecloggingofthefiltermediumandthefilterresiduelayer;Mixingcoarsesolidparticlessuchasdiatomaceousearth,expandedperlite,etc.intothedifficult-to-filtersuspension(suchascolloid)canmakethefilterresiduelayerloose;whenthefiltratehasahighviscosity,thesuspensioncanbeheatedtoreducetheviscosity.Thesemeasurescanspeedupthefiltrationspeed.
Performancecharacteristics
1.High-efficiencyandprecisefiltration:Specialstructureoffilterdiscfiltrationtechnology,preciseandsensitiveperformance,toensurethatonlyparticlessmallerthantherequiredparticlesizecanenterthesystem,whichisthemosteffectiveThefiltrationsystem;thespecificationsare5μ,10μ,20μ,55μ,100μ,130μ,200μ,etc.,userscanchoosedifferentprecisionfilterdiscsaccordingtothewaterrequirements.Thesystemflowcanbeflexiblyadjustedaccordingtoneeds.
2.Standardmodularity,savingspace:Thesystemisbasedonastandarddiscfilterunit,accordingtomodulardesign,userscanchooseaccordingtotheirneeds,flexibleandchangeable,stronginterchangeability.Thesystemiscompactandoccupiesaverysmallarea.Thecornerspacecanbeflexiblyusedforinstallation.Forexample,theequipmentwithaprocessingwatervolumeofabout300m3/hoccupiesonlyabout6m2(generalwaterquality,filtrationlevel100μ).
3.Fullyautomaticoperation,continuouswaterdischarge:betweeneachunitinthefiltercombination,thebackwashingprocessalternatesalternately,andtheworkingandbackwashingstatesareautomaticallyswitchedtoensurecontinuouswaterdischarge;Thewashingwaterconsumptionisverysmall,accountingforonly0.5%ofthewateroutput;ifcombinedwithair-assistedbackwashing,theself-consumptionwatercanbereducedtolessthan0.2%.High-speedandthoroughbackwashingcanbecompletedintensofseconds.
4.Dlouhá životnost: nový plastový filtrační prvek je pevný, neopotřebovává se, nekoroduje a minimálně znečišťuje. Po letech průmyslového praktického ověření nedochází po 6 až 10 letech používání k opotřebení a opotřebení a efekty filtrace a zpětného mytí se nezhoršují.
5.Highquality,lowmaintenance:Productsmeetthecorrespondingqualitystandards,allproductsaretestedandrunundersimulatedworkingconditionsbeforeleavingthefactory,nospecialtoolsarerequired,andfewparts;easytouse,Onlyneedregularinspection,almostnodailymaintenance.
Klasifikace
Hlavní klasifikace
Filtr se dělí na tři typy: gravitační filtr, vakuový filtr a tlakový filtr podle různých metod získání hnací síly typu filtrace.
Gravitace
Thepressureformedonthefiltermediumwiththeaidofthegravityandthepositiondifferenceofthesuspensionisusedasthedrivingforceforthefiltration,generallyintermittentoperation,suchassandDevice.
Vakuum
Anegativepressureisformedattheoutletofthefiltrateasthedrivingforceforfiltration.Theabsolutepressureoftheoperatingvacuumoftheindustrialvacuumfilteris(2.5～8.0)×105Pa.Thetemperatureofthesuspensionduringfiltrationshouldbelowerthanthevaporizationtemperatureofthefiltrateundertheoperatingvacuum.Thisfilterisdividedintobatchoperationandcontinuousoperation.Theintermittentlyoperatedvacuumfiltercanfiltersuspensionsofvariousconcentrations.Thevacuumfilterisfilledwithsuspensioninthecontainershell.Thefilterleafwrappedwithfilterclothonbothsidesisimmersedinthesuspension,andtheinnercavityofthefilterleafisconnectedwiththevacuumsystem.Afterthefiltrateissuckedout,itisledoutbythepipe,andthefilterresidueaccumulatedonthesurfaceofthefilterleafisremovedaftertheshutdown.Continuouslyoperatedvacuumfiltersaresuitableforfilteringthicksuspensionscontainingmoresolidparticles.Theworkingprinciplesoftherotarydrumvacuumfilter,theinnerfiltersurfacerotarydrumvacuumfilter,thediscvacuumfilterandthetippingbucketvacuumfilteraresimilar.Theentirefiltersurfaceisdividedintoapluralityofseparatedfilterchambers,andeachrotatingfilterchamberissequentiallyconnectedwitheachfixedpipethroughadistributionvalvetosuckoutthefiltrateandlotioninthefilterchamber,orsendcompressedair.Eachfilterchamberrotatesonecircletocompletethewholeprocessoffilteringoperation,andtheoperationsofmultiplefilterchambersareconnectedtoformcontinuousfiltration.Thestructureofthebeltvacuumfilterissimilartothatofthebeltconveyor,withacontinuousfilterbeltsuitableforeasy-to-filtersuspensions.Thebeltvacuumfilter,theinnerfiltersurfacedrumvacuumfilterandthetippingbucketvacuumfilterareallfedonthetopofthefiltermedium(filtercloth),whichisespeciallysuitableforthesuspensionofsolidparticleswithhighdensityandfastsedimentation.
Tlak
Itusesthepressureappliedattheinletofthesuspensionorthemechanicalsqueezingforceappliedtothewetmaterialasthefilteringdrivingforce,whichissuitableforrequirementsFiltrationofsuspensionswithlargepressuredifferencesisalsodividedintotwotypes:batchoperationandcontinuousoperation.Intermittentlyoperatedtube-and-tubefilterandpressurefilterareusedforfiltrationoflow-concentrationsuspensions.Thefilterisalsoakindofintermittentlyoperatedpressurefilter,whichisdividedintothreetypes:plateandframetype,boxtypeandverticaltype,andhasawiderangeofuses.Theoilfilterisaplateandframefilterpressunitequippedwithaccessoriessuchasanoilpumpandavacuumevaporator.Continuouslyoperatedrotarydrumpressurefilteranddiscpressurefilterperformpressurefiltrationinaclosedshell,andtheirstructureissimilartorotarydrumvacuumfilteranddiscvacuumfilter.Duetothecomplexstructure,therearefewerapplications.
Commonlyusedpressurefiltrationistousethevolumeofthefilterchambertobecomesmallerorapplymechanicalsqueezingforcetofilter.Thefilterresiduehasalowmoisturecontentandissuitableforsuspensionswithahighconcentrationofsolidparticles.Inthebeltsqueezefilter,thewetfilterresidue,whichhasbeeninitiallydeliquoredbygravityorvacuum,movesbetweentwofilterbelts,andisthensqueezedanddeliquoredbyrollers.Thescrewpressfilterhasacylinderwithpores,inwhichthereisarotatingspiral.Thedepthofthespiralgrooveisdifferent.Thematerialisaddedfromthedeepgrooveendtotheshallowgrooveend.Thespaceofthefilterchamberisgraduallyreduced.Thematerialissqueezed,andthefiltrateflowsfromthecylinder.Theporesaredischarged,andthefilterresidueisdischargedfromthesmallend.
Přesnost
Precisionfiltersareaimedatfiltrationaccuracy,generallybetweensandfiltration(coarsefiltration)andultrafiltration.Undertheactionofpressure,therawwaterpassesthroughthefilterelement,theimpuritiesaretrappedonthewallofthefilterelement,andthewaterflowsoutthroughthefilterelementtoachievethepurposeoffiltration.Thescaleofmanufacturersoffilterequipmentinmycountryismainlysmallandmedium-sizedenterprises.Theproductadoptshigh-qualitystainlesssteel,hardpolyvinylchloride,engineeringplastics,organicglassandothercorrosion-resistantmaterialsastheoutershell,mainlyhigh-qualitystainlesssteel,withbuilt-infilterelementsofdifferentmedia.Thebuilt-infilterelementsincludePEcore,honeycombcore,foldingcore,titaniumtubesinteredcore,activatedcarboncore,ceramiccore,polypropylenefiberfiltercore,etc.Differentfilterelementshavedifferentfilteringeffects,sotheprecisionfiltercanremovesuspendedsolids,somecolloidalsubstancesandfineparticlesinthewateraccordingtotherawwaterquality,effluentqualityandwatervolumerequirementstoachievedifferentfilteringaccuracy.Thefiltrationaccuracyofprecisionfiltersonthemarketrangesfrom0.2-100um.Precisionfiltersareoftenusedasprotectivefiltersforelectrodialysis,ionexchange,reverseosmosis,ultrafiltrationandotherdevices.Theycanbeappliedtowatertreatmentinfood,wine,pharmaceutical,chemical,andelectronicsindustries,suchas:
Potravinářský průmysl: Jemná filtrace minerální vody, čištění a filtrace nápojů a alkoholu. Farmaceutický průmysl: úprava vody sterilní vody, orální kapaliny, infuze, vstřikování atd.;
Electronicindustry:purewaterpreparationandwashingwaterfiltrationinsemiconductor,instrument,picturetubeandothermanufacturingplants;
Chemický průmysl: čištění organických rozpouštědel, esterů, alkoholů, kyselin, zásad a dalších chemických surovin, olejů;
Environmentalprotection:treatmentofelectroplatingwastewater,printingwastewater,pharmaceuticalwastewaterandotherindustrialwastewater.Waterqualitytreatmentfordesalinationofseawaterandbrackishwater,watersupplytreatmentforhotelsandapartments,etc.;
Zahrada a zahradnictví: parky, dvory, skleníky, chov zvířat, průmyslová místa, kde je třeba uměle produkovat superjemnou vodní mlhu, a špičkové zavlažování a údržbu odpadních vod.
Klasifikace výkonu
Řádkový filtr
Dvouválcový filtr
Vysokotlaký filtr
AsmentionedaboveItshouldbeameshfilter.Infact,therearemanykindsoffilters,suchaslaminatedfilters,sandrodfilters,carbonfilters,plateandframefilters,activatedcarbonfilters,diatomaceousearthfilters,microporousfilters,etc.Themainprincipleistousetheporesizeofthefiltermediumtotrapsubstancessmallerthantheporesizeofthemedium.Ofcourse,somefiltermediaalsohavespecialeffectssuchasadsorption.Mostfiltersarenotsotroublesometobackwash,aslongascleanwaterisusedtointroducethemediuminthereversebackwashfilterfromtheendofthefilteredwatertoachieveagoodbackwasheffect.
Klasifikace průmyslu
Hydraulické filtry: používají se hlavně v průmyslu filtrace oleje, včetně sacích filtrů, vratných olejových filtrů, potrubních filtrů atd.
Potravinové filtry: prachové filtry, vzduchové filtry, klimatizační filtry.
Léčivé filtry:filtry na kapaliny, dýchací filtry, krevní filtry, bakteriální filtry.
Funkční klasifikace
Samočištění
Je to filtr, který přímo zachycuje nečistoty ve vodě, odstraňuje suspendované pevné částice, částice, snižuje zákal, čistí kvalitu vody, snižuje znečištění systému, bakterie, řasy, rez atd., aby se čistila kvalita vody a chránilo přesné vybavení dalšího zařízení v systému.
Hlavní součásti jsou: motor, elektrická ovládací skříň, ovládací potrubí, sestava hlavního potrubí, sestava filtračního prvku, nerezový kartáč 316L, sestava rámu, hnací hřídel, vstupní a výstupní připojovací příruby atd.
Overcomemanyshortcomingsofthefilterproduct,suchassmalldirtholdingcapacity,easytobeblockedbydirt,thefilteringpartneedstobedisassembledandcleaned,andthefilterstatuscannotbemonitored.Ithastheabilitytofiltertherawwaterandautomaticallycleanthefilterelement.Function.Thesystemprovidesuninterruptedwatersupplyduringcleaninganddrainage,andcanmonitortheworkingstatusofthefilterwithahighdegreeofautomation.Itcoverstherequirementsofvariousfilteringprecisionsfrom10umto3000um.Adoptingadvancedequipmentintheinternationalwatertreatmentindustry,itcanbeinstalledatanypositioninanydirection,vertically,horizontally,andupsidedown.Itcanbeusedinindustries,agriculture,municipalpower,electronics,medicine,food,printinganddyeing,construction,steel,metallurgy,papermaking,etc.Industrialwaterfiltration.
Automaticky
Automatický filtr (8 listů)
isasetofwidelyusedfiltersintheindustryEquipment,traditionalfilterproductshavesmalldirtholdingcapacity,areeasytobeblockedbydirt,filterpartsneedtobedisassembledandcleaned,andcannotmonitorthefilterstatus.Manyshortcomingsareovercome.Ithasthefunctionoffilteringrawwaterandautomaticallycleaninganddischargingthefilterelement.Itconsistsofashell,amulti-elementfilterelement,abackwashmechanism,anelectriccontrolbox,areducer,anelectricvalveandadifferentialpressurecontroller.Thetransversepartitionintheshelldividestheinnercavityintoupperandlowercavities.Theuppercavityisequippedwithmultiplefilterelements,whichutilizesthefilteringspaceandsignificantlyreducesthefiltervolume.Abackwashsuctioncupisinstalledinthelowercavity.Whenworking,theturbidliquidentersthelowercavityofthefilterthroughtheinlet,andthenenterstheinnercavityofthefilterelementthroughthepartitionholes.Theimpuritieslargerthanthegapofthefilterelementareintercepted,andthenetliquidpassesthroughthegaptotheuppercavity,andisfinallysentoutfromtheoutlet.Advantages:Theautomaticfilterprecisionis100micronsbydefault,andcanbeselectedfrom10to3000microns.Thefilterareaislargeandthedirtholdingcapacityishigh.Theusercancustomizeitaccordingtotheactualworkingconditions.Thecleaningmethodissimple,andthecleaningcycleiselectronicallymonitored,whichcanrealizeautomaticcleaningandsewagedischarge.Allparametersintheautomaticself-cleaningfiltercontrolsystemcanbeadjusted.
Typ štětce
Thetypesofstainlesssteelbrushfilterare:automaticstainlesssteelbrushfilter,hand-operatedstainlesssteelbrushfilter.Itsmainfunctionistoremovesuspendedsolidsinthewater,reducetheconcentrationofsuspendedsolidsinthewater,particulatematter,reduceturbidity,purifywaterquality,reducesystemfouling,bacteriaandalgae,rust,andpurifywaterquality.
Thestainlesssteelbrushfilteradoptsapatentedinternalmechanicalstructure,whichrealizesatruehigh-pressurebackwashingfunction,whichcaneasilyandcompletelyremoveimpuritiestrappedbythefilter,cleaningwithoutdeadspots,andwithoutfluxattenuation,Toensurethefiltrationefficiencyandlongservicelife.
Thestainlesssteelbrushfilterrealizesautomaticbackwashingthroughitsownretrievalandstrainfunctions,whichcancopewithunstablewaterqualityfluctuationswithoutmanualintervention.
Duringthebackwashingprocessofthestainlesssteelbrushfilter,each(group)filterscreenissequentiallybackwashed;toensurethatthefilterscreeniscleanedsafelyandefficiently,andotherfiltersarenotaffected,continuetofilter.
Thestainlesssteelbrushfilteradoptsanautomaticdrainvalve,whichhasashortbackwashingtime,lesswaterconsumptionforbackwashing,andisenvironmentallyfriendlyandeconomical.Therearefewwearingparts,noconsumables,lowoperationandmaintenancecosts,andsimpleoperationandmanagement.
Klasifikace médií
Podle filtračního média se dělí na: vzduchový filtr, kapalinový filtr, síťový filtr, světelný filtr.
Vzduch
Vývoj vzduchových filtrů
Andtheuseofrespiratoryprotectionequipment.Accordingtorecords,asearlyasthefirstcenturyinRome,peopleusedhempmasksforprotectionwhentheywerepurifyingmercury.Inthelongtimesincethen,airfiltershavealsomadeprogress,buttheyaremainlyusedasrespiratoryprotectiondevicesinsomedangerousindustries,suchastheproductionofhazardouschemicals.In1827,Browndiscoveredthelawofmovementoftinyparticles,andpeoplehaveabetterunderstandingofthemechanismofairfiltration.
Therapiddevelopmentofairfiltersiscloselyrelatedtothedevelopmentofthemilitaryindustryandtheelectronicsindustry.DuringtheFirstWorldWar,duetotheuseofvariouschemicalpoisons,militarygasmaskswithasbestosfiberfilterpaperasthesmokefilterlayercameintobeing.GlassfiberfiltermediaforairfiltrationwaspatentedintheUnitedStatesinOctober1940.Inthe1950s,theUnitedStatesconductedin-depthresearchontheproductionprocessofglassfiberfilterpaper,whichimprovedanddevelopedairfilters.Inthe1960s,HEPAfilterscameout;inthe1970s,HEPAfiltersusingfineglassfiberfilterpaperasthefiltermediumhaveafiltrationefficiencyof99.9998%forparticleswithaparticlesizeof013microns.Sincethe1980s,withtheemergenceofnewtestmethods,theimprovementofuseevaluation,andtheimprovementoffiltrationperformancerequirements,ithasbeenfoundthatHEPAfiltershaveseriousproblems,sohigherperformanceULPAfiltershavebeenproduced.Countriesarestillstudyinghard,anditisestimatedthatmoreadvancedairfilterswillappearsoon.
Výkon vzduchového filtru
Makethepollutedaircleantothestateneededforproductionandlife,thatis,maketheairreachacertaindegreeofcleanliness.Howtheairfilterfilterstheair:
Generalairpurificationequipmentfiltersairroughlydividedintothefollowingmethodsandsteps.
1.Vícenásobné filtry – zabraňují vnikání bakterií ve vzduchu do místnosti
Multipleactivatedcarbonfilterseffectivelyinterceptdustandgerms,filtertheair,andensurethattheairenterstheroomClean.
2.Titaniumoxidekillspoisons-degradesthepollutionoforganictoxicgasessuchasformaldehydeandbenzeneintheindoorair
Nano-gradetitaniumdioxideisactivatedbyultravioletlighttofiltertheairandeffectivelydegradetheairRadiationpollutionfromorganictoxicgasessuchasformaldehydeandbenzene.
3.Negativeionoxygenation-increasetheoxygenintheindoorairtoanappropriateamountandkeepthecontentstable
ThenegativeiongeneratoraddsoxygentotheindoorairtoensurethattheairenteringthehomeremainssufficientTheamountofoxygen,fullofvitality,strengthenthefiltrationofair>
4.PTCkeramicheating-topenívnitřníhovzduchunapříjemnouteplotu
Performauxiliarypreheatingtoappropriatelyincreasetheindoortemperaturetofiltertheairandmakethehomewarmandcomfortable.
⒌Ultravioletlightsterilization——-stronglykilltheepidemicvirusesandbacteriaintheair
Ultravioletlightsourcecaneffectivelykilltheepidemicvirusesandbacteriaintheair,keepingpeopleawayThesourceofinfectionistofiltertheairtoprotectthehealthofthewholefamily.
Thefilterisanindispensabledeviceonthepipelineoftheconveyingmedium.Itisusuallyinstalledattheinletofapressurereducingvalve,apressurereliefvalve,afixedwaterlevelvalveorotherequipmenttoeliminateimpuritiesinthemedium.Toprotectthenormaluseofvalvesandequipment.Whenthefluidentersthefiltercartridgewithacertainfilterscreen,itsimpuritiesareblocked,andthecleanfiltrateisdischargedfromthefilteroutlet.Whencleaningisneeded,justtakeoutthedetachablefiltercartridgeandreloaditaftertreatment.Yes,therefore,itisextremelyconvenienttouseandmaintain.
Vysoce účinný vzduch
Vysoce účinné vzduchové filtry (8 listů)
High-efficiencyairfiltersaregenerallyusedastheendofthefilterTherefore,therequirementsforhigh-efficiencyfiltersarealsothemoststringent,andthefactoryneedstobetestedonebyone.Astheendofthehigh-efficiencyfilter,itisthemostcriticaloneofthevariouslevelsoffiltersandrequiresadditional"watching".Toprolongtheservicelifeofthehighefficiencyfilter,themostfundamentalwayistoblockthedustinthepre-filter.Thereplacementofthepre-filtergenerallydoesnotrequiresuspensionofproductionordebugging,soexperiencedownerswillpayattentionandmoneytothepre-filter.Forclass10,000andclass100,000cleanworkshops.Pre-filtrationcanchooseF8filter,sothattheservicelifeoftheendhighefficiencyfiltercangenerallyreachfiveyears.Inforeignprojectsanddomesticnewprojects,F8filteristhemostcommonpre-filterfornon-uniformflowcleanrooms.Forcleanworkshopsoflevel100,level10orhigherforchipfactories,thecommonefficiencylevelofthepre-filterisH10,andHEPAissimplyselectedformanynewprojects.Inthedesignofcleanroomair-conditioningsystemsinthepastinChina,thecommonconfigurationoffiltersis:coarseefficiency,mediumefficiencyandhighefficiency.Atthattime,theservicelifeofthehighefficiencyfilterwasonly1-3years,andtheworstwasonlyafewmonths.Itcanbeseenthattheefficiencyofthepre-filterdeterminestheservicelifeoftheendfilter.Liquid
Kapalný filtr (6 listů)
tocleanthecontaminatedliquidtowhatisneededforproductionandlifeState,thatis,maketheliquidreachacertaindegreeofcleanliness.Themaincommonliquidfiltersare:swimmingpoolintegratedfilteringequipment.
Poolintegratedequipmentisamainstreamproductchoiceinthemodernswimmingpoolindustrymarket.Withitstechnicalcontentanddesignconcept,integratedswimmingpoolequipmenthasbrainstormedanewimpactontheswimmingpoolequipmentmarket.Integratedswimmingpoolequipmentisaswimmingpoolequipmentthatintegratesswimmingpoolfiltration,disinfectionandcirculation,andhasbecomeamainstreamproductintoday'sswimmingpoolequipmentmarket.
Theintegratedswimmingpoolequipmentplaysanirreplaceableroleintheoperationofmodernswimmingpools.Itscharacteristicfunctionhasthefollowingthreepoints:
Za prvé, jeho umístění může být umístěno v blízkosti bazénu, s nízkou hlučností a vysokým bezpečnostním faktorem.
Zadruhé, instalace je jednoduchá, pracovní zátěž je snížena a efektivita je vysoká.
Third,itissmallinsizeandburiedintheground,whichcanfreeupaplacetobeautifytheswimmingpool.
Síť
Usesettingstoblockspam,sothattheinformationonthecomputerscreenmeetstherequirementsasmuchaspossible.
Světlo
Theprincipleofsameabsorptionseparateslightofdifferentcolorsandabsorbssomeunwantedlight.
Klasifikace funkcí
Sací filtr
ThefilterisinstalledonthesuctionlineofthepumptofilterouttheresidueinthefueltankThepollutantsthatenterthroughtheairholesofpollutantshavetheeffectofprotectingthepump.However,inordertoavoidthecavitationofthepump,fullattentionmustbepaidtothepressureloss.Generally,coarsemetalmeshornotchedmetalwirematerialof100-200meshisused.Therefore,itisnotafiltertocontrolthepollutionconcentrationofthesystem.
Vysokotlaký potrubní filtr(A)
ItisinstalledontheoutletpipeofthepumptoprotectpollutantsfromenteringTheroleofthesystem.Therefore,thepollutantconcentrationofthesystemcanbecontrolled.However,becauseitisahigh-pressuremainline,itissubjecttothepulsationandpressureimpactofthepump,sothematerialandstrengthofthefilterelementmustbecarefullyconsidered.
Vysokotlaký filtr (B)
Inthesystem,inordertoprotecthydraulicpartsthatareparticularlysensitivetopollution,thisfilterisinstalled.Calledterminalfilter.Therefore,ittendstohaveasmallerfiltrationparticlesizethanotherfilters.Therefore,whenusing,choosealargecapacity.Inaddition,thematerialandstrengthofthecomponentsshouldbefullyconsideredasin(A).
Návratový filtr
Setonthereturnlineofthesystem,itsfunctionistocapturethepollutantsgeneratedorinvadedinthesystembeforereturningtothefueltank..Therefore,itisthemosteffectiveandimportantfiltertocontrolthepollutionconcentrationofthesystem.Althoughitisalow-pressurepipeline,dependingontheoperatingconditionsofthetransmissiondevice,pulsationorpressureshockmayalsooccur,sothematerialandstrengthofthecomponentsmustbefullyconsidered.Importedpump
Oběhový filtr
Itislocatedonthereturnpathofthefueltankcirculation.Thesystemhasalargecapacity,soitisoftenrequiredwhenstrictcleanlinessisrequired.Itisadopted,evenifthesystemisnotworking,itcancapturethepollutantsinthefueltank,therefore,theefficiencyofreducingthepollutionconcentrationisthebest.Inaddition,acoolerisinstalled,whichhastheadvantagesofsimultaneouscoolingandeasymaintenance.However,specialpumpsandmotorsarerequired,andthecostishigh.
Vzduchový filtr
isinstalledonthefueltanktopreventpollutantsfrombeingmixedintothefueltankwithairduetothefluctuationofthefuelvolumeofthefueltank.Therefore,thefiltrationaccuracyshouldhavethesameperformanceasthefilter,andthecapacityshouldbeleftwithsufficientleewaytopreventtheinternalpressureofthefueltankfrombecomingnegativeduetothecloggingoftheholesandcausingthecavitationofthepump.Payspecialattentionwhenthesurroundingenvironmentisbad.
Othertypes
Usedonthefilterperformancetestbench,thistestbenchmuststrictlypurifythesystembeforethetest,sothetestsystemandthepollutioninjectionforthetestsystemThesystemneedstobeequippedwithafilter.Thefilterandthetestedfilteraretwodifferentthings.Itsaccuracyrequirementsanddirtholdingcapacityrequirementsarehigherthanthoseofthetestedfilter.InordertodistinguishbetweenthetwointhesametestsystemThiskindoffilteriscalledatestbenchfilter,andthetestedfilteriscalledthetestedfilter.
Fiber
Mechanicalfiltrationisthemostcommonlyusedmethodofsewagetreatment.Accordingtodifferentfiltermedia,mechanicalfiltrationequipmentisdividedintotwotypes:particlemediafiltrationandfiberfiltration.Theparticlemediafiltrationmainlyusessandandgravel.Theparticlefilterisusedasthefiltermediumtoachievefiltrationthroughtheadsorptionoftheparticlefilterandtheinterceptionofthesuspendedsolidsinthewaterbytheporesbetweenthesandparticles.Theadvantageisthatitiseasytobackwash,butthedisadvantageisthatthefiltrationrateisslow,generallynotexceeding7m/h;Theamountofdirtinterceptionissmall,andthecorefilterlayerisonlythesurfaceofthefilterlayer;thefiltrationaccuracyislow,only20-40μm,whichisnotsuitableforrapidfiltrationofhigh-turbiditysewage.
Thehigh-efficiencyasymmetricfiberfiltrationsystemusesasymmetricfiberbundlematerialasthefiltermaterial,andthefiltermaterialisasymmetricfiber.Onthebasisofthefiberbundlefiltermaterial,acoreisaddedtomakeitbothfiberfilterDuetothespecialstructureofthefiltermaterial,theporosityofthefilterbedcanquicklyformagradientdensityofupperandlowerparticles,whichenablesthefiltertofilterquickly,withalargeamountofdirtinterception,andeasybackwashing.Designedtomaketheprocessofdosing,mixing,flocculation,filtration,etc.becarriedoutinonereactor,sothattheequipmentcaneffectivelyremovesuspendedorganicmatterintheaquaculturewaterbody,reducethewaterbodyCOD,ammonianitrogen,nitrite,etc.,especiallysuitableforthecirculatingwateroftheholdingtankThesolidsuspensionisfiltered.
Rozsah aplikace
1.Akvakultura, úprava cirkulující vody;
2.Chlazení cirkulační vody,průmyslová cirkulační úprava vody;
3Úprava feutrofních vodních těles, jako jsou řeky, jezera a domácí vodní krajiny;
4. Opětovné použití regenerované vody
Mechanismus působení
1.StructureofasymmetricfiberfiltermediaThecoretechnologyofthehigh-efficiencyautomaticgradientdensityfiberfilteristouseasymmetricfiberbundlematerialasthefiltermaterial,oneendofwhichisaloosefibertow,andtheotherendofthefibertowisfixedinasolidbodywithalargerspecificgravity.Thesolidcoreplaysaroleincompactingthefibertow,andatthesametime,duetothesmallsizeofthecore,ithaslittleeffectontheuniformityoftheporositydistributionofthefiltersection,therebyimprovingthedirtinterceptioncapacityofthefilterbed.Thefilterbedhastheadvantagesofhighfiberfiltrationporosity,smallspecificsurfacearea,highfiltrationrate,largedirtinterception,andhighfiltrationaccuracy.Whenthesuspendedflowinwaterpassesthroughthesurfaceofthefiberfiltermaterial,itwillbesuspendedundertheactionofvanderWaalsattractionandelectricity.Theadhesionofsolidsandfiberbundlesismuchgreaterthanthatofquartzsand,whichisbeneficialtoimprovefiltrationspeedandfiltrationaccuracy.
Duringbackwashing,duetothedifferenceinthespecificgravitybetweenthecoreandthefiberfilaments,thecomatailfibersspreadoutandoscillatewiththebackwashingwaterflow,resultinginastrongdragforce;thecollisionbetweenthefiltersisalsointensifiedInordertoimprovethemechanicalforceofthefiberinthewater,theirregularshapeofthefiltermaterialcausesthefiltermaterialtorotateundertheactionofbackwashingwaterandairflow,whichstrengthensthemechanicalshearingforceofthefiltermaterialduringbackwashing.Asaresultofthejointaction,thesolidparticlesattachedtothefibersurfacecaneasilyfalloff,therebyimprovingthecleanlinessofthefiltermaterial,sothattheasymmetricfiberfiltermaterialalsohasthebackwashingfunctionoftheparticlefiltermaterial.
2.Continuousgradientdensityfilterbedstructurewithsparsetopandbottomdensity
Thefilterbedcomposedofasymmetricfiberbundlefiltermaterialiscompactedbythewaterflow,whenthewaterflowsthroughthefilterlayerResistanceisgenerated.Fromtoptobottom,theheadlossisgraduallyreduced,thewaterflowisgettingfasterandfaster,thedegreeofcompactionofthefiltermaterialisgettinghigherandhigher,andtheporosityisgettingsmallerandsmaller,sothatalongthedirectionofthewaterflow,acontinuousgradientdensityisautomaticallyformedThefilterlayerisdistributed,forminganinvertedpyramidstructure.Thisstructureisveryconducivetotheeffectiveseparationofsuspendedsolidsinwater,thatis,thedesorbedparticlesontheupperpartofthefilterbedareeasilycapturedandinterceptedinthelowernarrowchannelfilterbed,realizingtheunificationofhighfiltrationrateandhigh-precisionfiltration,andimprovingthefilterTheamountofdirtintercepted,andthefiltrationcycleisprolonged.
Charakteristiky
1.Highfiltrationaccuracy:theremovalrateofsuspendedsolidsinwatercanreachmorethan95%,anditcanpreventmacromolecularorganicmatter,viruses,bacteria,Impuritiessuchascolloidandironhaveacertainremovaleffect.Thetreatedwateraftergoodcoagulationtreatment,whentheinletwateris10NTU,theoutletwaterislessthan1NTU;
2,rychlost filtrace je rychlá: obecně 40 m/h, až 60 m/h, což je více než 3krát vyšší než u běžných filtrů;
3.Velká nosná kapacita:obecně 15～35kg/m3, což je více než 4násobek běžných pískových filtrů;
3.p>
4. Nízká spotřeba vody při zpětném promývání: spotřeba vody při zpětném proplachování je menší než 1–2 % periodické filtrační vody;
5.Lowdosageandlowoperatingcost:duetothefilterbedstructureAndthecharacteristicsofthefiltermaterialitself,thedosageofflocculantis1/2to1/3oftheconventionaltechnology.Theincreaseincyclewaterproductionreducestheoperatingcostpertonofwater;
6.Malá stopa:vyrobí se stejné množství vody a stopa je menší než 1/3 běžného pískového filtru.
7.Strongadjustability.Parameterssuchasfiltrationprecision,interceptioncapacityandfiltrationresistancecanbeadjustedasrequired;
8.Filtrační materiál je odolný a má životnost více než 20 let.
Procesní postup
Theflocculationdosingdeviceisusedtoaddflocculanttothecirculatingwaterfromthepump.Aftertherawwaterispressurizedbytheboosterpump,theflocculantispassedthroughThepumpimpellerisstirredandmixeduniformlytosuspendthefinesolidparticlesandcolloidalsubstancesintherawwaterformicro-flocculationreaction,andquicklygenerateflocswithavolumegreaterthan5microns,whichflowthroughthefiltrationsystempipelineintothehigh-efficiencyasymmetricfiberfilter,andtheflocsarefilteredThematerialisfilteredandretained.
Typ Y
Filtr typu Y (vodní filtr) patří do potrubí řady hrubých filtrů a lze jej použít pro filtraci plynů nebo jiných středně velkých částic, instalovaných na potrubí pro odstranění kapaliny. (vodní filtr) má hlavní výhody jednoduché výroby, pohodlné instalace a čištění a velké kapacity pro zadržování nečistot.
Typ disku
Filtr disku je zařízení, které se skládá z filtračních jednotek a používá se ve filtračním systému.
Thediscfilteriscomposedoffilterunitsarrangedsidebyside.Thefilterunitismainlycomposedofagroupofring-shapedreinforcedplasticfilterdiscswithgroovesorribs.Sewageentersfromtheoutsideduringfiltration,andtherimformedbytheedgeofthegrooveontheadjacentfilterdiscinterceptsthesolidsinthewater;whenbackwashing,thewaterflowsfromtheinsideoftheannularfilterdisctotheoutside,whichwilltrapthedirtonthefilterdiscRinsedownanddischargethroughthesewageoutlet.
Thediscsarestackedtightlyandcompactlyintheunit,andthemiddlegroovesoftheupperandlowerdiscsplayaroleoffilteringandinterception.Whentherawwaterpassesthroughthefilterunit,itflowsfromtheoutsidetotheinside,andtheimpuritieslargerthanthegroovewillbeinterceptedoutside.Thecorecomponentofthediscfilteristhestackedplasticfilterdiscs.Therearespecialgroovesorribsonthefilterdiscs.Thegroovesorribsontheadjacentfilterdiscsformchannelsofacertainsize.Theparticlesizeislargerthanthechannelsize.Thesuspendedmatterisinterceptedtoachievethefilteringeffect.Thisproductcanreplacetraditionalmechanicalfiltrationdevicessuchassandfilterstoalargeextent,withsuperiorperformanceandmuchlowerwaterandelectricityconsumptionthanotherproducts.
Thediscfilterisdesignedwithedgesofdifferentstructuresonbothsidesofthefilterdisc.Theseedgesaresuperimposedtoformaninterceptionsurface.Amongthem,thecurvededgemainlyservestointerceptandstorethesuspendedmatter.Theoutersideisslightlylarger.Theopendesigncanensurethatthereisnoneedtoloosenthefilterdiscduringbackwashing,andathoroughbackwashingeffectcanbeachievedwhenthewaterpressureislow;theannularedgedeterminesthefiltrationaccuracyandconstitutesthewaterchannel,andthefilterdisccanprovideupto5μfiltrationAccuracy.Whentherawwaterentersthemiddleofthetwo-layerfilterdisc,itfirstflowsalongthecurvededgeintothedisc,butitcannotenterdirectlyaftercarefulobservation.Atthistime,itistheannularedgethatplaystheroleoffilteringandinterception.Theimpuritiessmallerthanthesizeoftheannulargroovecanenterthecurvededgecommunicatingwiththeinsidealongtheannularedge,andthelargeimpuritiesareintercepted.
Theuniquestructureofthefilterdiscalsomakesthebackwashingprocessofflushingoutthedirtsimplerandeasier,withouttheneedforcomplicatedmotorsanddrivers,andasimplewaterflowisenoughtoflushoutthedirtFilterelement.Thisexcellentperformancereducesthebackwashingtimeofthefilter;atthesametime,becausethedirtisnotonlystoredbetweenthefilterplategroupandthehousing,butmorecanbestoredinsidethefilterplategroup,thefiltercanholdmoredirt
Initialeffect
FAOnePFInitialeffectfilter
InitialeffectplatefilterFAonePFprimaryeffectfilter
FA-PFprimaryeffectfilter,beforethefiltermaterialispleated,alayerofgalvanizedironmeshisattachedtotheairoutletsurfaceofthefiltermaterial.ThislayerofironmeshcannotonlyprotectThefiltermaterialwillnotbebroken,anditcanalsopreventthefiltermaterialfromdeformingduetowindpressure,soitcanensurethatallthesurfaceofthefiltermaterialcanbefullyutilized.
Useaspecialacupuncturetechniquetoprocessthefiberofthefiltermaterialtoformagradualstructure,sothatthefilterhasahigherdustcapacityandalongerservicelife.
Theouterframeofthefilteriscomposedofasolidwaterproofboard,whichisusedtofixthefoldedfiltermaterial.Thediagonaldesignontheouterframecanprovidealargefilteringareaandmaketheinnerfiltermaterialtightlyadheretotheouterframe.Thesurroundingsofthefilteraregluedwiththeouterframewithspecialprofessionaladhesiveglue,whichcanpreventairleakageordamagecausedbywindpressure.
Funkce:
Thefilterisdividedintothreesizesofdepth1'',2''and4'',anditsfilteringareaisageneralflatfilter.Fivetimesthenet,ithasalongerservicelifeandhigherfiltrationefficiencythanaclassofglassfiberfiltersorrayonfilters.
Itcanbeuseddirectlyorasaprimaryfiltertoprotectthemiddleandhighefficiencyfiltersinthebacksectionoftheairconditioningsystem.
Thefiberistreatedwithaspecialpinningtechniquetoformagradualstructure,sothatthefilterhasthecharacteristicsoflowpressureloss,highdustcollection,andlongservicelife.
Použití:
ThecoarsefiltersystemofgeneralairconditionercanextendtheservicelifeofbagandHFPAfilters.Itisacoarsefilterforfactoryexhaustgasandprocessingdustcollection.
Faucet
Základní informace
Specifikace:výška60mmBarva:světlemodrá,světlerůžová,bílá(náhodně vydáno)
Složení:1filtr,1připojení
Materiál:PSplast,zeolit,aktivní uhlí (kokosová skořápka),PVAnetkaná látka
Funkce
Thematerialrequirementsandeffluentqualityrequirementsareproducedinaccordancewiththe"RegulationsonHygienicSafetyandFunctionalEvaluationofDrinkingWaterDisposers".
Itcanremoveresidualchlorine,heavymetalsandotherimpuritiesintapwater.Makethewatermoresweetandsanitary.
Thisproductachievestheeffectofrapidlayeredfiltrationandpurificationthroughtheinternalwaterfiltertissuelayer:
⒈Non-wovenfabric:filteroutironslagandvisibleimpuritiesinthewaterpipe;Coconutactivatedcarboncanreducethealkalinesubstancesinthewater;
⒉Silicateionzeolite:Itcanremovesomeheavymetalimpuritiesandodorssuchasresidualchlorineandresidualammonia,makingthewatermoresweetandsanitary;
⒊Coconutshellactivatedcarbon:high-qualitycoconutshellasthematerial,theproducthasgoodadsorptioncapacity,highstrength,anduniformparticlesize.Theappearanceisblack,withwell-developedvoids,highadsorptionrate,goodstrength,stableperformance,easyregeneration,anddurability.Itcaneffectivelyremovethepeculiarsmellandcolorinthewater,andcaneffectivelyhelppeopleremovecarcinogens,makingthewaterclearandsoftintaste.Itiswidelyusedinthedeeppurificationofdrinkingwater.
⒋Theproductissmallinsize,easytoloadandunload,andissuitableforallkindsofoldandnewfaucets;
⒌Zpomalte a ovládejte průtok vody v kohoutku, zabraňte stříkání vody a šetříte vodní zdroje.
Rozsah aplikace
Becausethefaucetspecificationsaredifferent,inordertoenhancethesealingeffectoftheinstallation,
Během instalačního procesu ji lze správně upravit. Použijte pásku z materiálu (těsnící pásku).
Bezpečnostní opatření
1Vyhněte se dlouhodobému používání horké vody, nejlépe pod 50 stupňů.
2Blackwaterwillflowoutwhenitisfirstused,whichiscausedbythepowderofbasicactivatedcarbon,anditcanbeusednormallyafter5-10secondsofdrainingthewater.
Newproductdevelopment
Traditionalfiltersusuallyuseafiltertoseparateparticlesfromtheliquid.Thefilterneedstobereplacedandcleanedfrequently,otherwiseitispronetoclogging.Incomparison,fishhaveastrongeroralfiltrationcapacity.Filter-feedingfish,suchasgoldfish,spoonsturgeons,baskingsharks,andwhalesharks,canretainfoodparticlesduringfilteringwhileavoidingcloggingoftheoralfilterbydebris.
TheresearchteamoftheCollegeofWilliamandMaryintheUnitedStatesreportedonMarch29,2016thattheydesignedahigh-efficiencyfiltermodelbasedonthefiltermechanismofthefilter-feedingfishmouthstructure,whichcaneffectivelyavoidthecloggingproblem.TheyreportedinthelatestissueoftheonlineversionoftheBritish"NatureCommunications"thatbasedonthestructurecalled"gillarch"inthemouthofthekeysnoutsturgeonandbaskingshark,theydesigneda3Dprintedtaperednylonplasticfiltermodel.Theyputthemodelinawaterflowpooltoobservethefilteringeffect,andcompareditwiththefilteringmechanismoftheoralstructureoftheskeysnosesturgeon.
Itturnedoutthatboththemodelandthefish’smouthareusedtotrapparticlesandpreventblockagesbycreatingvortexesintheliquid.Thegillarchisacone-shapedstructureformedbybendinghardbonesorcartilagetosupportthegills.Thebonesarearrangedinparallellikeold-fashionedradiators.
Theresearchersexplainedthatthetaperedstructurehelpsthewaterflowinthefish’smouthtoformwatercurrentsandvortices,whiletheparallelarrangementofboneshelpssmallparticlestogather,andthetwocombinetoforma"vortex".The"rotatingstepfilter"mechanismallowsparticlessmallerthanthegapbetweenthebonestobeintercepted.
OneoftheauthorsofthereportandascholaratWilliamandMaryCollegeLaurieSandersonsaidthatthiskindoffiltrationmechanismwillbewidelyusedinthefuture,frommicrofiltersthatfilteronlycell-sizedparticlestolargeindustrialpipelines.Allfilterscanplayaroleinhighefficiency.
Metody instalace
Existují tři typy: přírubové připojení, závitové připojení a svařování.
Princip výběru
1. Průměr vstupu a výstupu:
Inprinciple,theinletandoutletdiameterofthefiltershouldnotbelessthanTheinletdiameterofthematchedpumpisgenerallythesameastheinletpipediameter.
2. Nominální tlak:
Thepressurelevelofthefilterisdeterminedaccordingtothehighestpressurethatmayappearinthefilterpipeline.
3.Výběr počtu otvorů:
Themainconsiderationistheparticlesizeoftheimpuritytobeintercepted,whichisdeterminedaccordingtotheprocessrequirementsofthemedium.Fortheparticlesizethatcanbeinterceptedbyvariousspecificationsofscreens,checkthefollowingtable"Filterspecifications".
4.Filtrační materiál:
Thematerialofthefilterisgenerallythesameasthematerialoftheconnectedprocesspipeline,anditcanbeconsideredfordifferentserviceconditions.Filtermadeofcastiron,carbonsteel,lowalloysteelorstainlesssteel.
5.Výpočet ztráty odporu filtru
U vodních filtrů je tlaková ztráta 0,52 ～ 1,2 kpa pod obecným výpočtem ohřívaného průtoku
Místo instalace
⑴Obecně jsou povolena nízkotlaká zařízení s tlakem nižším než 140 kg/cm2, obvykle je instalován pouze sací filtr, ale je třeba nainstalovat zpětný filtr a vzduchové filtry.
⑵Ingeneralmediumandhighpressureliquidinstallationswithapressureabove140kg/cm2,areturnfilterisgenerallyusedtocontrolthepollutionconcentration.However,whentherearespecialrequirementsforreliability,ahigh-pressurepipelinefiltershouldbeusedtogether.
⑶Inordertoincreasethereliabilityofelectromagneticproportionalcontrolvalveorsmallflowregulatingvalve,aterminalfiltershouldbeinstalled.
⑷Whenusingservovalves,effortsshouldbemadetoreducethepollutionconcentrationofthesystem.Therefore,highpressureandreturnfiltersshouldbeusedtogether;forlargevolumes,acirculatingfiltershouldbeinstalled,andaterminalshouldbeinstalledontheauxiliarypipeline.filter.
Bezpečnostní opatření
Instalační pozice olejového filtru v hydraulickém systému jsou obvykle následující:
⑴Musí být nainstalováno na sacím portu čerpadla:
Surface-typeoilfiltersaregenerallyinstalledonthesuctionlineofthepumptofilteroutlargerimpuritiesandparticlestoprotectthehydraulicpump.Inaddition,thefilteringcapacityoftheoilfiltershouldbemorethantwicethepumpflow,Thepressurelossislessthan0.02MPa.
⑵Instalováno do výstupního olejového okruhu čerpadla:
Thepurposeofinstallinganoilfilterhereistofilteroutpollutantsthatmayinvadevalvesandothercomponents.Itsfiltrationaccuracyshouldbe10-15μm,anditcanwithstandtheworkingpressureandimpactpressureontheoilcircuit,andthepressuredropshouldbelessthan0.35MPa.Atthesametime,asafetyvalveshouldbeinstalledtopreventcloggingoftheoilfilter.
(3)Installedontheoilreturnlineofthesystem:Thiskindofinstallationplaysanindirectfilterfunction.Generally,abackpressurevalveisinstalledinparallelwiththefilter.Whenthefilterisblockedandreachesacertainpressurevalue,thebackpressurevalveopens.
⑷Instalováno na obvod odbočky systému.
⑸Singlefiltersystem:Largehydraulicsystemcanbespeciallyequippedwithahydraulicpumpandoilfiltertoformanindependentfiltercircuit.
Inadditiontotheoilfilterrequiredbytheentiresysteminthehydraulicsystem,aspecialoilfilterisofteninstalledinfrontofsomeimportantcomponents(suchasservovalves,precisionthrottlevalves,etc.).Makesuretheyareworkingproperly.
Body výběru
Při výběru olejového filtru je třeba vzít v úvahu následující body:
⑴Thefilteringaccuracyshouldmeetthepredeterminedrequirements.
⑵Itcanmaintainsufficientflowcapacityforalongtime.
⑶Thefilterelementhassufficientstrengthandwillnotbedamagedbyhydraulicpressure.
⑷Thefilterelementhasgoodcorrosionresistanceandcanworkforalongtimeunderthespecifiedtemperature.
⑸Prvek filtru se snadno čistí a nevyměňuje.
Therefore,theoilfiltershouldbeselectedaccordingtothetechnicalrequirementsofthehydraulicsystem,accordingtothefilteringaccuracy,flowcapacity,workingpressure,oilviscosity,workingtemperatureandotherconditions.
Přesnost konverze
Počet ok | μm | Počet ok | μm |
| 2 | > 8000 | > 100 | > 150 |
| 3 | > 6700 | 115 | > 125 |
| 4 | > 4750 | 120 | > 120 |
| 5 | > 4000 | 125 | > 115 |
| 6 | > 3350 | 130 | > 113 |
| 7 | > 2800 | 140 | > 109 |
| 8 | > 2360 | 150 | > 106 |
10 | > 1700 | 160 | > 96 |
| 12 | > 1400 | 170 | > 90 |
| 14 | > 1180 | 175 | > 86 |
| 16 | > 1000 | 180 | > 80 |
| 18 | > 880 | 200 | > 75 |
| 20 | > 830 | 230 | 62 |
| 24 | > 700 | 240 | > 61 |
| 28 | > 600 | 250 | > 58 |
| 30 | > 550 | 270 | > 53 |
| 32 | > 500 | 300 | > 48 |
| 35 | > 425 | 325 | > 45 |
| 40 | > 380 | 400 | > 38 |
| 42 | > 355 | 500 | > 25 |
| 45 | > 325 | 600 | > 23 |
| 48 | > 300 | 800 | > 18 |
50 | > 270 | > 1000 | > 13 |
| 60 | > 250 | 1340 | > 10 |
| 65 | > 230 | > 2000 | > 6.5 |
| 70 | > 212 | 5000 | > 2.6 |
| 80 | > 180 | > 8000 | > 1.6 |
90 | > 160 | > 10 000 | > 1.3 |
Testprinciple
※Bubblepointmethodtestprinciple:Whenthefiltermembraneandthefilterelementarecompletelyinfiltratedwithacertainsolution,andthenpressurizedononesidebytheairsource(theairinletcontrolsysteminourinstrumentcanstabilizethepressureandadjusttheairinlet),asthepressureincreases,theairflowsfromthefiltermembraneReleaseonthesideofthefilm,showingthesizeandnumberofthefilmonthesideForbubblesofvaryingamounts,thecorrespondingpressurevaluedeterminedbytheinstrumentisthebubblepoint.
※Diffusionflowtestprinciple:Diffusionflowtestmeansthatwhenthegaspressureis80%ofthebubblepointvalueofthefilterelement,therehasnotyetbeenalargeamountofgasperforation,butasmallamountofgasfirstDissolveintothemembraneoftheliquidphase,andthendiffusefromtheliquidphasetothegasphaseontheotherside.Thispartofthegasiscalledthediffusionflow.
※Whythediffusionflowmethodisbetter:Thebubblepointvalueisonlyaqualitativevalue.Fromthebeginningofthebubbletothefinalgroupbubble,itisarelativelylongprocessandcannotbeaccuratelyquantified.Themeasurementofthediffusionflowvalueisaquantitativevalue,whichcannotonlyaccuratelydeterminetheintegrityofthefilter,butalsoreflecttheporosity,flowrateandeffectivefiltrationareaofthemembrane.ThisiswhyforeignmanufacturersusediffusionThereasonfortheintegrityoftheflowmethodtest.
※Waterintrusionmethodtestprinciple:Thewaterintrusionmethodisdedicatedtothetestofhydrophobicfilterelements.Thehydrophobicmembraneisresistanttowater.Thesmallertheporesize,thegreaterthepressurerequiredtosqueezewaterintothehydrophobicmembrane.Therefore,underacertainpressure,measurethewaterflowsqueezedintothefiltermembranetodeterminetheporesizeofthefilterelement.
Průmyslový standard
CJ/T3068-1997 polymery s intergrovaným mikroporézním tubulárním filtrem
Vysoce účinný vzduchový filtr GB/T13554-2008
p>Vzduchový filtr GB/T14295-2008
GB/T14382-2008 tříprůchodový filtr pro potrubí
hydraulický filtr GB/T17486-2006
p>HG/T21637-1991 chemický potrubní filtr
HG/T4085-2009filtr tlakového typu vláken
JB/T7538-1994pipelinebasketFilter
SY/T0523-2008Filtr pro úpravu vody v ropném poli
YY-T0142-1994 vzduchový filtr na jedno použití pro zařízení pro infuzi a transfuzi krve
Pneumatický vzduchový filtr JB-T7374-1994
Potrubí filtr HG-T20570.22-1995
JB-T6417-1992vzduchový filtr pro klimatizaci
Vysokogradientní magnetický filtr JB-T9044-1999
YY0286.1-2007jednorázová precizní filtrinfuzní sada
JB/T10410-2004automatická reakce průmyslové vody Vyplachovací filtr
Údržba
①. Hrubý filtr
1.Thecorepartofthefilteristhefilterelement,whichconsistsofthefilterFrameandstainlesssteelwiremesh.Thestainlesssteelwiremeshisawearablepartandneedsspecialprotection;
2.Afterthefilterhasbeenworkingforaperiodoftime,certainimpuritieshaveprecipitatedinthefiltercore,andthepressuredropsatthistime.Increase,theflowratewilldecrease,andtheimpuritiesinthefilterelementneedtoberemovedintime;
3.Whencleaningimpurities,payspecialattentiontothestainlesssteelwiremeshonthefilterelementnottobedeformedordamaged,otherwise,installitagainAfterthefilter,thepurityofthefilteredmediumdoesnotmeetthedesignrequirements,andthecompressor,pump,instrumentandotherequipmentwillbedamaged;
4.Ifthestainlesssteelwiremeshisfoundtobedeformedordamaged,itneedstobereplacedimmediately.
②,přesný filtr
1.Thecorepartoftheprecisionfilteristhefilterelement.Thefilterelementiscomposedofspecialmaterials,whicharesuitableforwearandneedspecialprotection;
p>2.Whentheprecisionfilterhasbeenworkingforaperiodoftime,thefilterelementofthefilterwillholdacertainamountofimpurities.Atthistime,thepressuredropwillincreaseandtheflowratewilldecrease.Theimpuritiesinthefiltermustberemovedintimeandcleanedatthesametime.Filterelement;
3.Whenremovingimpurities,payspecialattentiontotheprecisionfilterelement.Itmustnotbedeformedordamaged.Otherwise,thefilterelementthatisinstalledagainwillnotmeetthedesignrequirementsofthepurityofthefilteredmedium;
4.Některé přesné filtrační prvky nelze použít opakovaně, například filtrační prvky sáčků, polypropylenové filtrační prvky atd.;
5.Pokud se zjistí, že se filtrační prvek deformuje nebo je poškozený, je třeba jej okamžitě vyměnit.
Tři. Pozor na ochranu před korozí, lakování na přírubě a tepelnou ochranu
Aplikační průmysl
⒈Zavlažování zahradního trávníku a zemědělství.
⒉Celkový filtrační systém pro zásobování vodou pro stravovací, textilní, těžební, elektronický a slévárenský průmysl.
⒊Waterfiltrationfornozzlesinpulpingandpapermaking,metallurgyandmachineryindustries.
⒋Obecná filtrace cirkulační vody v potravinářském, energetickém, těžebním a tavicím průmyslu.
⒌Pharmaceutical,petrochemicaloilrefining,airconditioningsystemorheatingsystemcoolingtowercirculatingwaterfiltration.
⒍Ionexchangepretreatmentofpetrochemical,electromechanical,andpharmaceuticalwastewater.
Síto filtru
Síto filtru je převážně z nerezové oceli.
Nerezové pletivo(Nerezové pletivo)
Materiál: SUS201,202,302,304,316,304L,316L,321 drát z nerezové oceli
Tkaní: plátno, keprová vazba, hustá vazba
Thespecificationofstainlesssteelwiremeshis1mesh-635mesh.Inthecaseofdensetwillweave,itcanreachamaximumof2800mesh.
304nerezové ocelové pletivo obecně označuje "18-8" (18%chrom,8%nikl)většinou základní slitinu nerezové oceli,která je velmi vhodná jako tkanina.Může být vystavena venku a nebude zoxidována,když venkovní teplota stoupne na 1400.
304LstainlesssteelmeshisverysimilartoT-304,thedifferenceisthatthecarboncontentisreduced,whichismoreconducivetoweavingandre-welding.
316stainlesssteelmeshcanbestabilizedbyadding2%molybdenum.T-316isan"18-8"alloy.Itislesspronetocorrosionthanotherchromium-nickelstainlesssteelsinsaltwater,sulphurwaterorinhalogensalts.Forexample,chlorideisanobviousexample.ThemostvaluablefeatureofT-316isthatithasstrongercreepresistanceatrisingtemperatures.OthermechanicalandstructuralfeaturesarethesameasT-304.
316LstainlesssteelmeshisverysimilartoT-316,thedifferenceisthatthecarboncontentisreduced,whichismoreconducivetoweavingandre-welding.
Usage:Becausestainlesssteelhasthepropertiesofacidresistance,alkaliresistance,abrasionresistance,temperatureresistance,etc.,itisoftenusedforscreening(screen)andfiltering(screen)underacidandalkalienvironmentalconditions.Itisusedasmudinthepetroleumindustry.Mesh,chemicalfiberindustryasascreenfilter,electroplatingindustryasapicklingmesh
filtrační prvek
Jak název napovídá, přesný filtrační prvek je srdcem filtru. Filtrační prvek se obecně používá pro filtraci oleje a filtraci vody. Filtrace, filtrace vzduchu a další průmyslová filtrace.
1.Theairpermeabilityoftheprecisionfilterelement:thefilterelementadoptsthestronghydrophobicandoleophobicfiberfiltermaterialoftheUnitedStates,andadoptsaframeworkwithgoodpermeabilityandhighstrengthtoreducetheresistancecausedbypassing.
2.Thehighefficiencyoftheprecisionfilterelement:thefilterelementadoptsthefine-openingspongeofGermany,whichcaneffectivelypreventtheoilandwaterfrombeingentrainedbythehigh-speedairflow,sothatthesmalloildropletsthatpassdowntheroadgatheratthelowerendofthefilterelementspongeandarearrangedsidebysideThebottomofthefiltercontainer.
3.Theairtightnessoftheprecisionfilterelement:areliablesealingringisusedatthejunctionofthefilterelementandthefilterhousingtoensurethattheairflowisnotshort-circuitedandpreventimpuritiesfromdirectlyenteringthedownstreamwithoutpassingthroughthefilterelement.
4.Anti-corrosionofprecisionfilterelement:Thefilterelementadoptsanti-corrosionreinforcednylonendcapandanti-corrosionfilterelementframe,whichcanbeusedinharshworkingconditions.