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.
Принцип на работа
Филтър (26 снимки)
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.
Филтър (10 листа)
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.Дълъг живот: новият пластмасов филтърен елемент е здрав, не се износва, не е корозивен и минимално замърсява. След години на промишлена практическа проверка, след 6 до 10 години употреба, няма износване и стареене, а ефектите на филтриране и обратно измиване няма да се влошат поради времето на употреба.
5.Highquality,lowmaintenance:Productsmeetthecorrespondingqualitystandards,allproductsaretestedandrunundersimulatedworkingconditionsbeforeleavingthefactory,nospecialtoolsarerequired,andfewparts;easytouse,Onlyneedregularinspection,almostnodailymaintenance.
Класификация
Основна класификация
Филтърът е разделен на три вида: гравитационен филтър, вакуумфилтър и филтър под налягане според различни методи за получаване на движеща сила на филтриране.
Гравитация
Thepressureformedonthefiltermediumwiththeaidofthegravityandthepositiondifferenceofthesuspensionisusedasthedrivingforceforthefiltration,generallyintermittentoperation,suchassandDevice.
Вакуум
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.
Налягане
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.
Прецизност
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:
Хранително-вкусова промишленост: фино филтриране на минерална вода, избистряне и филтриране на напитки и алкохол. Фармацевтична промишленост: пречистване на вода на стерилна вода, перорална течност, инфузия, инжекция и др.;
Electronicindustry:purewaterpreparationandwashingwaterfiltrationinsemiconductor,instrument,picturetubeandothermanufacturingplants;
Химическа промишленост: пречистване на органични разтворители, естери, алкохоли, киселини, алкали и други химични суровини, масла;
Environmentalprotection:treatmentofelectroplatingwastewater,printingwastewater,pharmaceuticalwastewaterandotherindustrialwastewater.Waterqualitytreatmentfordesalinationofseawaterandbrackishwater,watersupplytreatmentforhotelsandapartments,etc.;
Градини и градинарство: паркове, дворове, оранжерии, животновъдство, промишлени места, където трябва да се произвежда изкуствено супер фина водна мъгла и цветя от висок клас за напояване и поддръжка.
Класификация на производителността
Линеен филтър
Двуцилиндров филтър
Филтър за високо налягане
AsmentionedaboveItshouldbeameshfilter.Infact,therearemanykindsoffilters,suchaslaminatedfilters,sandrodfilters,carbonfilters,plateandframefilters,activatedcarbonfilters,diatomaceousearthfilters,microporousfilters,etc.Themainprincipleistousetheporesizeofthefiltermediumtotrapsubstancessmallerthantheporesizeofthemedium.Ofcourse,somefiltermediaalsohavespecialeffectssuchasadsorption.Mostfiltersarenotsotroublesometobackwash,aslongascleanwaterisusedtointroducethemediuminthereversebackwashfilterfromtheendofthefilteredwatertoachieveagoodbackwasheffect.
Индустриална класификация
Хидравлични филтри: използвани главно в индустрията за филтриране на масло, включително смукателни филтри, филтри за връщане на масло, филтри за тръбопроводи и др.
Филтри за храна: филтри за прах, филтри за въздух, филтри за климатизация.
Филтри за лекарства: филтри за течни лекарства, филтри за дишане, филтри за кръв, бактериални филтри.
Функционална класификация
Самопочистване
Това е филтър, който директно улавя примеси във водата, премахва суспендираните твърди частици, частиците, намалява мътността, пречиства качеството на водата, намалява мръсотията в системата, бактериите, водораслите, ръждата и т.н., за да пречиства качеството на водата и да защитава прецизното оборудване на друго оборудване в системата.
Основните компоненти са: двигател, електрическа контролна кутия, контролен тръбопровод, възел на главната тръба, възел на филтърния елемент, четка от неръждаема стомана 316L, възел на рамката, задвижващ вал, входни и изходящи свързващи фланци и др.
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.
Автоматично
Автоматичен филтър (8 листа)
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.
Тип четка
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.
Класификация на медиите
Според филтърната среда се разделя на: въздушен филтър, филтър за течности, мрежов филтър, филтър за светлина.
Въздух
Разработването на честни филтри
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.
Ефективност на въздушния филтър
Makethepollutedaircleantothestateneededforproductionandlife,thatis,maketheairreachacertaindegreeofcleanliness.Howtheairfilterfilterstheair:
Generalairpurificationequipmentfiltersairroughlydividedintothefollowingmethodsandsteps.
1.Множество филтри—предотвратете проникването на микроби от прах във въздуха в помещението
Multipleactivatedcarbonfilterseffectivelyinterceptdustandgerms,filtertheair,andensurethattheairenterstheroomClean.
2.Titaniumoxidekillspoisons-degradesthepollutionoforganictoxicgasessuchasformaldehydeandbenzeneintheindoorair
Nano-gradetitaniumdioxideisactivatedbyultravioletlighttofiltertheairandeffectivelydegradetheairRadiationpollutionfromorganictoxicgasessuchasformaldehydeandbenzene.
3.Negativeionoxygenation-increasetheoxygenintheindoorairtoanappropriateamountandkeepthecontentstable
ThenegativeiongeneratoraddsoxygentotheindoorairtoensurethattheairenteringthehomeremainssufficientTheamountofoxygen,fullofvitality,strengthenthefiltrationofair>
4.PTCкерамика загряване на въздух на закрито до комфортна температура
Performauxiliarypreheatingtoappropriatelyincreasetheindoortemperaturetofiltertheairandmakethehomewarmandcomfortable.
⒌Ultravioletlightsterilization——-stronglykilltheepidemicvirusesandbacteriaintheair
Ultravioletlightsourcecaneffectivelykilltheepidemicvirusesandbacteriaintheair,keepingpeopleawayThesourceofinfectionistofiltertheairtoprotectthehealthofthewholefamily.
Thefilterisanindispensabledeviceonthepipelineoftheconveyingmedium.Itisusuallyinstalledattheinletofapressurereducingvalve,apressurereliefvalve,afixedwaterlevelvalveorotherequipmenttoeliminateimpuritiesinthemedium.Toprotectthenormaluseofvalvesandequipment.Whenthefluidentersthefiltercartridgewithacertainfilterscreen,itsimpuritiesareblocked,andthecleanfiltrateisdischargedfromthefilteroutlet.Whencleaningisneeded,justtakeoutthedetachablefiltercartridgeandreloaditaftertreatment.Yes,therefore,itisextremelyconvenienttouseandmaintain.
Високоефективен въздух
Високоефективни въздушни филтри (8 листа)
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
Филтър за течности (6 листа)
tocleanthecontaminatedliquidtowhatisneededforproductionandlifeState,thatis,maketheliquidreachacertaindegreeofcleanliness.Themaincommonliquidfiltersare:swimmingpoolintegratedfilteringequipment.
Poolintegratedequipmentisamainstreamproductchoiceinthemodernswimmingpoolindustrymarket.Withitstechnicalcontentanddesignconcept,integratedswimmingpoolequipmenthasbrainstormedanewimpactontheswimmingpoolequipmentmarket.Integratedswimmingpoolequipmentisaswimmingpoolequipmentthatintegratesswimmingpoolfiltration,disinfectionandcirculation,andhasbecomeamainstreamproductintoday'sswimmingpoolequipmentmarket.
Theintegratedswimmingpoolequipmentplaysanirreplaceableroleintheoperationofmodernswimmingpools.Itscharacteristicfunctionhasthefollowingthreepoints:
Първо, местоположението му може да бъде поставено близо до плувния басейн, с нисък шум и висок коефициент на безопасност.
Второ, инсталацията е проста, работното натоварване е намалено и ефективността е висока.
Third,itissmallinsizeandburiedintheground,whichcanfreeupaplacetobeautifytheswimmingpool.
Мрежа
Usesettingstoblockspam,sothattheinformationonthecomputerscreenmeetstherequirementsasmuchaspossible.
Светлина
Theprincipleofsameabsorptionseparateslightofdifferentcolorsandabsorbssomeunwantedlight.
Класификация на функции
Всмукателен филтър
ThefilterisinstalledonthesuctionlineofthepumptofilterouttheresidueinthefueltankThepollutantsthatenterthroughtheairholesofpollutantshavetheeffectofprotectingthepump.However,inordertoavoidthecavitationofthepump,fullattentionmustbepaidtothepressureloss.Generally,coarsemetalmeshornotchedmetalwirematerialof100-200meshisused.Therefore,itisnotafiltertocontrolthepollutionconcentrationofthesystem.
Тръбопроводен филтър за високо налягане(A)
ItisinstalledontheoutletpipeofthepumptoprotectpollutantsfromenteringTheroleofthesystem.Therefore,thepollutantconcentrationofthesystemcanbecontrolled.However,becauseitisahigh-pressuremainline,itissubjecttothepulsationandpressureimpactofthepump,sothematerialandstrengthofthefilterelementmustbecarefullyconsidered.
Тръбен филтър за високо налягане (B)
Inthesystem,inordertoprotecthydraulicpartsthatareparticularlysensitivetopollution,thisfilterisinstalled.Calledterminalfilter.Therefore,ittendstohaveasmallerfiltrationparticlesizethanotherfilters.Therefore,whenusing,choosealargecapacity.Inaddition,thematerialandstrengthofthecomponentsshouldbefullyconsideredasin(A).
Филтър за връщане
Setonthereturnlineofthesystem,itsfunctionistocapturethepollutantsgeneratedorinvadedinthesystembeforereturningtothefueltank..Therefore,itisthemosteffectiveandimportantfiltertocontrolthepollutionconcentrationofthesystem.Althoughitisalow-pressurepipeline,dependingontheoperatingconditionsofthetransmissiondevice,pulsationorpressureshockmayalsooccur,sothematerialandstrengthofthecomponentsmustbefullyconsidered.Importedpump
Циркулационен филтър
Itislocatedonthereturnpathofthefueltankcirculation.Thesystemhasalargecapacity,soitisoftenrequiredwhenstrictcleanlinessisrequired.Itisadopted,evenifthesystemisnotworking,itcancapturethepollutantsinthefueltank,therefore,theefficiencyofreducingthepollutionconcentrationisthebest.Inaddition,acoolerisinstalled,whichhastheadvantagesofsimultaneouscoolingandeasymaintenance.However,specialpumpsandmotorsarerequired,andthecostishigh.
Въздушен филтър
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.
Обхват на приложение
1.Пречистване на циркулационна вода от аквакултури;
2. Охлаждане на циркулационна вода, промишлено третиране на циркулационна вода;
3 Третиране на еутрофни водни тела като реки, езера и домашни водни пейзажи;
4. Повторно използване на регенерирана вода
Механизъм на действие
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.
Характеристики
1.Highfiltrationaccuracy:theremovalrateofsuspendedsolidsinwatercanreachmorethan95%,anditcanpreventmacromolecularorganicmatter,viruses,bacteria,Impuritiessuchascolloidandironhaveacertainremovaleffect.Thetreatedwateraftergoodcoagulationtreatment,whentheinletwateris10NTU,theoutletwaterislessthan1NTU;
2, скоростта на филтриране е бърза: обикновено 40 m/h, до 60 m/h, което е повече от 3 пъти в сравнение с обикновените пясъчни филтри;
3. Голям капацитет за задържане на мръсотия: обикновено 15～35 kg/m3, което е повече от 4 пъти в сравнение с обикновените пясъчни филтри;
3.p>
4.Ниска консумация на вода за обратно промиване: консумацията на вода за обратно промиване е по-малко от 1～2% от водата за периодично филтриране;
5.Lowdosageandlowoperatingcost:duetothefilterbedstructureAndthecharacteristicsofthefiltermaterialitself,thedosageofflocculantis1/2to1/3oftheconventionaltechnology.Theincreaseincyclewaterproductionreducestheoperatingcostpertonofwater;
6.Малък отпечатък: произвежда се същото количество вода и отпечатъкът е по-малко от 1/3 от обикновения пясъчен филтър.
7.Strongadjustability.Parameterssuchasfiltrationprecision,interceptioncapacityandfiltrationresistancecanbeadjustedasrequired;
8.Филтърният материал е издръжлив и има експлоатационен живот повече от 20 години.
Поток на процеса
Theflocculationdosingdeviceisusedtoaddflocculanttothecirculatingwaterfromthepump.Aftertherawwaterispressurizedbytheboosterpump,theflocculantispassedthroughThepumpimpellerisstirredandmixeduniformlytosuspendthefinesolidparticlesandcolloidalsubstancesintherawwaterformicro-flocculationreaction,andquicklygenerateflocswithavolumegreaterthan5microns,whichflowthroughthefiltrationsystempipelineintothehigh-efficiencyasymmetricfiberfilter,andtheflocsarefilteredThematerialisfilteredandretained.
Y-тип
Y-тип филтър (филтър за вода) принадлежи към серията груби филтри за тръбопроводи и може също да се използва за филтриране на газове или други средни големи частици, инсталирани на тръбопровода за отстраняване на флуид. тип филтър (филтър за вода) има предимства на опростено производство, удобен монтаж и почистване и голям капацитет за задържане на мръсотия.
Тип диск
Дисковото филтърно устройство, което се състои от филтриращи модули и се използва във филтърната система.
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
Начален ефект
FAOnePFНачален ефектфилтър
InitialeffectplatefilterFAonePFprimaryeffectfilter
FA-PFprimaryeffectfilter,beforethefiltermaterialispleated,alayerofgalvanizedironmeshisattachedtotheairoutletsurfaceofthefiltermaterial.ThislayerofironmeshcannotonlyprotectThefiltermaterialwillnotbebroken,anditcanalsopreventthefiltermaterialfromdeformingduetowindpressure,soitcanensurethatallthesurfaceofthefiltermaterialcanbefullyutilized.
Useaspecialacupuncturetechniquetoprocessthefiberofthefiltermaterialtoformagradualstructure,sothatthefilterhasahigherdustcapacityandalongerservicelife.
Theouterframeofthefilteriscomposedofasolidwaterproofboard,whichisusedtofixthefoldedfiltermaterial.Thediagonaldesignontheouterframecanprovidealargefilteringareaandmaketheinnerfiltermaterialtightlyadheretotheouterframe.Thesurroundingsofthefilteraregluedwiththeouterframewithspecialprofessionaladhesiveglue,whichcanpreventairleakageordamagecausedbywindpressure.
Характеристики:
Thefilterisdividedintothreesizesofdepth1'',2''and4'',anditsfilteringareaisageneralflatfilter.Fivetimesthenet,ithasalongerservicelifeandhigherfiltrationefficiencythanaclassofglassfiberfiltersorrayonfilters.
Itcanbeuseddirectlyorasaprimaryfiltertoprotectthemiddleandhighefficiencyfiltersinthebacksectionoftheairconditioningsystem.
Thefiberistreatedwithaspecialpinningtechniquetoformagradualstructure,sothatthefilterhasthecharacteristicsoflowpressureloss,highdustcollection,andlongservicelife.
Употреба:
ThecoarsefiltersystemofgeneralairconditionercanextendtheservicelifeofbagandHFPAfilters.Itisacoarsefilterforfactoryexhaustgasandprocessingdustcollection.
Кран
Основна информация
Спецификации: височина 60 mm Цвят: светлосин, светлорозов, бял (издава се на случаен принцип)
Състав: 1 филтър, 1 връзка
Материал: PS пластмаса, зеолит, активен въглен (кокосова черупка), PVA нетъкан текстил
Характеристики
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;
⒌Забавете и контролирайте водния поток на крана, предотвратявайте водните пръски и пестете водните източници.
Обхват на приложение
Becausethefaucetspecificationsaredifferent,inordertoenhancethesealingeffectoftheinstallation,
Може да се регулира правилно по време на процеса на инсталиране. Използвайте лента от суровини (уплътнителна лента).
Предпазни мерки
1Избягвайте да използвате гореща вода за дълго време, за предпочитане под 50 градуса.
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.
Методи на инсталиране
Има три типа: фланцово съединение, резбово съединение и заваряване.
Принцип на избор
1. Диаметър на входа и изхода:
Inprinciple,theinletandoutletdiameterofthefiltershouldnotbelessthanTheinletdiameterofthematchedpumpisgenerallythesameastheinletpipediameter.
2. Номинално налягане:
Thepressurelevelofthefilterisdeterminedaccordingtothehighestpressurethatmayappearinthefilterpipeline.
3.Избор на брой дупки:
Themainconsiderationistheparticlesizeoftheimpuritytobeintercepted,whichisdeterminedaccordingtotheprocessrequirementsofthemedium.Fortheparticlesizethatcanbeinterceptedbyvariousspecificationsofscreens,checkthefollowingtable"Filterspecifications".
4. Филтърен материал:
Thematerialofthefilterisgenerallythesameasthematerialoftheconnectedprocesspipeline,anditcanbeconsideredfordifferentserviceconditions.Filtermadeofcastiron,carbonsteel,lowalloysteelorstainlesssteel.
5.Изчисляване на загубата на съпротивление на филтър
За водните филтри загубата на налягане е 0,52～1,2kpa при общото изчисление на номиналния дебит
Място на инсталиране
⑴По принцип устройства с ниско налягане с налягане под 140 kg/cm2 обикновено се инсталират само смукателни филтри, но трябва да се инсталират и обратен филтър и въздушен филтър.
⑵Ingeneralmediumandhighpressureliquidinstallationswithapressureabove140kg/cm2,areturnfilterisgenerallyusedtocontrolthepollutionconcentration.However,whentherearespecialrequirementsforreliability,ahigh-pressurepipelinefiltershouldbeusedtogether.
⑶Inordertoincreasethereliabilityofelectromagneticproportionalcontrolvalveorsmallflowregulatingvalve,aterminalfiltershouldbeinstalled.
⑷Whenusingservovalves,effortsshouldbemadetoreducethepollutionconcentrationofthesystem.Therefore,highpressureandreturnfiltersshouldbeusedtogether;forlargevolumes,acirculatingfiltershouldbeinstalled,andaterminalshouldbeinstalledontheauxiliarypipeline.filter.
Предпазни мерки
Позициите за инсталиране на масления филтър в хидравличната система обикновено са следните:
⑴Трябва да се инсталира на смукателния порт на помпата:
Surface-typeoilfiltersaregenerallyinstalledonthesuctionlineofthepumptofilteroutlargerimpuritiesandparticlestoprotectthehydraulicpump.Inaddition,thefilteringcapacityoftheoilfiltershouldbemorethantwicethepumpflow,Thepressurelossislessthan0.02MPa.
⑵Инсталиран на изходния маслен кръг на помпата:
Thepurposeofinstallinganoilfilterhereistofilteroutpollutantsthatmayinvadevalvesandothercomponents.Itsfiltrationaccuracyshouldbe10-15μm,anditcanwithstandtheworkingpressureandimpactpressureontheoilcircuit,andthepressuredropshouldbelessthan0.35MPa.Atthesametime,asafetyvalveshouldbeinstalledtopreventcloggingoftheoilfilter.
(3)Installedontheoilreturnlineofthesystem:Thiskindofinstallationplaysanindirectfilterfunction.Generally,abackpressurevalveisinstalledinparallelwiththefilter.Whenthefilterisblockedandreachesacertainpressurevalue,thebackpressurevalveopens.
⑷Инсталиран във веригата на разклоненията на системата.
⑸Singlefiltersystem:Largehydraulicsystemcanbespeciallyequippedwithahydraulicpumpandoilfiltertoformanindependentfiltercircuit.
Inadditiontotheoilfilterrequiredbytheentiresysteminthehydraulicsystem,aspecialoilfilterisofteninstalledinfrontofsomeimportantcomponents(suchasservovalves,precisionthrottlevalves,etc.).Makesuretheyareworkingproperly.
Точки за избор
Когато избирате маслен филтър, трябва да се имат предвид следните точки:
⑴Thefilteringaccuracyshouldmeetthepredeterminedrequirements.
⑵Itcanmaintainsufficientflowcapacityforalongtime.
⑶Thefilterelementhassufficientstrengthandwillnotbedamagedbyhydraulicpressure.
⑷Thefilterelementhasgoodcorrosionresistanceandcanworkforalongtimeunderthespecifiedtemperature.
⑸Филтърният елемент е лесен за почистване или замяна.
Therefore,theoilfiltershouldbeselectedaccordingtothetechnicalrequirementsofthehydraulicsystem,accordingtothefilteringaccuracy,flowcapacity,workingpressure,oilviscosity,workingtemperatureandotherconditions.
Преобразуване на точност
Брой мрежи | μm | Брой мрежи | 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.
Индустриален стандарт
CJ/T3068-1997полимерни микропористи тръбни филтър
GB/T13554-2008 високоефективен въздушен филтър
p>Въздушен филтър GB/T14295-2008
GB/T14382-2008 триходов филтър за тръбопровод
GB/T17486-2006 хидравличен филтър
p>HG/T21637-1991 химически тръбопроводен филтър
HG/T4085-2009 филтър за снопове влакна под налягане
Филтър JB/T7538-1994pipelinebasket
SY/T0523-2008 филтър за пречистване на вода от нефтени находища
YY-T0142-1994 въздушен филтър за еднократна употреба за оборудване за инфузия и кръвопреливане
Пневматичен въздушен филтър JB-T7374-1994
HG-T20570.22-1995 тръбен филтър
JB-T6417-1992 въздушен филтър за климатик
JB-T9044-1999 магнитен филтър с висок градиент
YY0286.1-2007комплект за прецизен филтър за еднократна употреба
JB/T10410-2004автоматична реакция на индустриална водаФилтър за промиване
Поддръжка
①.Груб филтър
1.Thecorepartofthefilteristhefilterelement,whichconsistsofthefilterFrameandstainlesssteelwiremesh.Thestainlesssteelwiremeshisawearablepartandneedsspecialprotection;
2.Afterthefilterhasbeenworkingforaperiodoftime,certainimpuritieshaveprecipitatedinthefiltercore,andthepressuredropsatthistime.Increase,theflowratewilldecrease,andtheimpuritiesinthefilterelementneedtoberemovedintime;
3.Whencleaningimpurities,payspecialattentiontothestainlesssteelwiremeshonthefilterelementnottobedeformedordamaged,otherwise,installitagainAfterthefilter,thepurityofthefilteredmediumdoesnotmeetthedesignrequirements,andthecompressor,pump,instrumentandotherequipmentwillbedamaged;
4.Ifthestainlesssteelwiremeshisfoundtobedeformedordamaged,itneedstobereplacedimmediately.
②, прецизен филтър
1.Thecorepartoftheprecisionfilteristhefilterelement.Thefilterelementiscomposedofspecialmaterials,whicharesuitableforwearandneedspecialprotection;
p>2.Whentheprecisionfilterhasbeenworkingforaperiodoftime,thefilterelementofthefilterwillholdacertainamountofimpurities.Atthistime,thepressuredropwillincreaseandtheflowratewilldecrease.Theimpuritiesinthefiltermustberemovedintimeandcleanedatthesametime.Filterelement;
3.Whenremovingimpurities,payspecialattentiontotheprecisionfilterelement.Itmustnotbedeformedordamaged.Otherwise,thefilterelementthatisinstalledagainwillnotmeetthedesignrequirementsofthepurityofthefilteredmedium;
4.Някои прецизни филтърни елементи не могат да се използват многократно, като торбени филтърни елементи, полипропиленови филтърни елементи и др.;
5.Ако се установи, че филтърният елемент е деформиран или повреден, той трябва да бъде поставен незабавно.
Три. Обърнете внимание на предпазване от ръжда, боя или масло на фланеца и запазване на топлината
Приложна индустрия
⒈Напояване на градински тревни площи и земеделие.
⒉Цялостна система за филтриране на водоснабдяване за кетъринг, текстил, минно дело, електроника и леярска промишленост.
⒊Waterfiltrationfornozzlesinpulpingandpapermaking,metallurgyandmachineryindustries.
⒋Обща информация за филтриране на циркулираща вода, хранителна, енергийна, минна и топилна промишленост.
⒌Pharmaceutical,petrochemicaloilrefining,airconditioningsystemorheatingsystemcoolingtowercirculatingwaterfiltration.
⒍Ionexchangepretreatmentofpetrochemical,electromechanical,andpharmaceuticalwastewater.
Филтърен екран
Филтърният екран е главно мрежа от неръждаема стомана.
Мрежа от неръждаема стомана (Stainlesssteelmesh)
Материал: SUS201,202,302,304,316,304L,316L,321 неръждаема стоманена тел
Тъкане: обикновена тъкан, кепър, плътна тъкан
Thespecificationofstainlesssteelwiremeshis1mesh-635mesh.Inthecaseofdensetwillweave,itcanreachamaximumof2800mesh.
Мрежата от неръждаема стомана 304 обикновено се отнася до "18-8" (18% хром, 8% никел) предимно основна сплав от неръждаема стомана, която е много подходяща за оформяне на кърпа.
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
филтърен елемент
Както подсказва името, прецизният филтърен елемент е сърцето на филтъра. Филтърният елемент обикновено се използва за филтриране на масло и филтриране на вода. Филтриране, филтриране на въздух и други отрасли на филтриране.
1.Theairpermeabilityoftheprecisionfilterelement:thefilterelementadoptsthestronghydrophobicandoleophobicfiberfiltermaterialoftheUnitedStates,andadoptsaframeworkwithgoodpermeabilityandhighstrengthtoreducetheresistancecausedbypassing.
2.Thehighefficiencyoftheprecisionfilterelement:thefilterelementadoptsthefine-openingspongeofGermany,whichcaneffectivelypreventtheoilandwaterfrombeingentrainedbythehigh-speedairflow,sothatthesmalloildropletsthatpassdowntheroadgatheratthelowerendofthefilterelementspongeandarearrangedsidebysideThebottomofthefiltercontainer.
3.Theairtightnessoftheprecisionfilterelement:areliablesealingringisusedatthejunctionofthefilterelementandthefilterhousingtoensurethattheairflowisnotshort-circuitedandpreventimpuritiesfromdirectlyenteringthedownstreamwithoutpassingthroughthefilterelement.
4.Anti-corrosionofprecisionfilterelement:Thefilterelementadoptsanti-corrosionreinforcednylonendcapandanti-corrosionfilterelementframe,whichcanbeusedinharshworkingconditions.