Nabani na owenza ulondolozo kwaye ulungise impompo okanye i-gearbox uyazi ukuba enye yamacandelo ahlala efuna ukutshintshwa ngexesha lokulungiswa kukutywinwa komlomo.Ngokuqhelekileyo yonakaliswa xa isusiwe okanye ichithwa.Mhlawumbi yayiyi-lip seal eyabangela ukuba isixhobo sikhutshwe enkonzweni ngenxa yokuvuza.Nangona kunjalo, inyaniso ihleli kukuba i-lip seal ibalulekile kumatshini.Babamba ioli okanye igrisi kwaye bancede ukugcina ukungcola ngaphandle.Imilebe yokutywina inokufumaneka phantse kuzo naziphi na izixhobo zasefektri, ngoko kutheni ungaziniki ixesha lokufunda indlela yokukhetha nokuyifaka ngokuchanekileyo?
Injongo ephambili yokutywinwa komlomo kukugcina ungcoliseko ngaphandle ngelixa ugcina i-lubrication.Ngokusisiseko, izitywina zomlomo zisebenza ngokugcina ukukhuhlana.Zingasetyenziswa kwizicelo ezahlukeneyo, ukusuka kwisixhobo esihamba kancinci ukuya kwisantya esiphezulu sokujikeleza, kunye namaqondo obushushu ukusuka kwi-sub-zero ukuya ngaphezulu kwe-500 degrees Fahrenheit.
Ukuze usebenze, isitywina somlomo kufuneka sigcine uqhagamshelwano olufanelekileyo kunye nenxalenye yalo ejikelezayo.Oku kuya kuphenjelelwa kukukhethwa kwesitywina esifanelekileyo, ukufakwa kunye nokugcinwa kokufakwa emva kokufakwa.Ndihlala ndibona amatywina amatsha emilebe eqala ukuvuza nje ukuba afakwe enkonzweni.Oku ngokuqhelekileyo kwenzeka ngenxa yofakelo olungafanelekanga.Amanye amatywina aya kuvuza ekuqaleni, kodwa aya kuyeka ukuvuza nje ukuba imathiriyeli yokutywina ihleli kwishaft.
Ukugcina isitywina somlomo osebenzayo kuqala ngenkqubo yokukhetha.Xa ukhetha izixhobo, kufuneka kuthathelwe ingqalelo ubushushu bokusebenza, i-lubricant esetyenzisiweyo, kunye nokusetyenziswa kwayo.Eyona nto ixhaphakileyo yokutywinwa komlomo yirabha ye-nitrile (Buna-N).Esi sixhobo sisebenza kakuhle kumaqondo obushushu ukusuka -40 ukuya kuma-275 degrees Fahrenheit.I-Nitrile lip seals ifanelekile kwizicelo ezininzi zemizi-mveliso, ukusuka kwisixhobo esitsha ukuya kwizitywina ezitshintshiweyo.Banokuxhathisa okugqwesileyo kwi-oyile, amanzi kunye nolwelo olwenziwa ngamanzi, kodwa eyona nto yahlula la matywina ziindleko zabo eziphantsi.
Olunye ukhetho olufikelelekayo yiViton.Uluhlu lwalo lokushisa luyi-40 ukuya kwi-400 degrees Fahrenheit, kuxhomekeke kwikhompawundi ethile.I-Viton seals inokumelana ne-oyile elungileyo kwaye inokusetyenziswa nepetroli kunye nolwelo lokuhambisa.
Ezinye izinto zokutywina ezinokuthi zisetyenziswe ngepetroleum ziquka i-Aflas, iSimiriz, i-carboxylated nitrile, i-fluorosilicone, i-nitrile egcwele kakhulu (HSN), i-polyurethane, i-polyacrylate, i-FEP kunye ne-silicone.Zonke ezi zixhobo zinezicelo ezithile kunye nemigangatho yokushisa echanekileyo.Qinisekisa ukuba uqwalasela inkqubo yakho kunye nokusingqongileyo ngaphambi kokuba ukhethe okanye utshintshe izinto zokutywina, njengoko izinto ezifanelekileyo zinokuthintela ukusilela okuxabisa kakhulu.
Emva kokuba izinto zokutywina zikhethiwe, isinyathelo esilandelayo kukuqwalasela isakhiwo sokutywinwa.Ngaphambili, izitywina zomlomo ezilula zaziquka ibhanti kwi-asi yesondo.Iimpawu zomlomo zanamhlanje zibandakanya amacandelo amaninzi achaphazela ukusebenza kwetywina.Kukho iindlela ezahlukeneyo zokunxibelelana, kunye ne-springless kunye ne-spring-loaded seals.Amatywina angengowasentwasahlobo awabizi kakhulu kwaye ayakwazi ukugcina izinto ezincangathi ezifana negrisi kwizantya ezisezantsi zeshaft.Usetyenziso oluqhelekileyo lubandakanya abahambisi, amavili kunye nezinto ezithambisayo.Amatywina asentwasahlobo aqhele ukusetyenziswa ngeoyile kwaye anokufumaneka kwizixhobo ezahlukeneyo.
Emva kokuba kukhethwe izinto zokutywina kunye noyilo, uphawu lomlomo kufuneka lufakwe ngokuchanekileyo ukuze lusebenze ngokufanelekileyo.Kukho iimveliso ezininzi kwimarike eyenzelwe ngokukodwa lo msebenzi.Uninzi lubukeka njengeekiti ze-bushing apho isitywina sifakwe ngqo emngxunyeni.Ezi zixhobo zinokusebenza kakuhle xa zikhethwe ngokucophelela, kodwa ezininzi iinguqulelo ze-shelf azisebenzi kakuhle, ngakumbi xa i-shaft sele ifakiwe.
Kwezi meko, ndikhetha ukusebenzisa ityhubhu enkulu ngokwaneleyo ukutyibilika phezu kwe-shaft kwaye ndinxibelelane kakuhle nendlu yokutywinwa komlomo.Ukuba ungafumana into yokuhuka indlu, unokuthintela umonakalo kwiringi yentsimbi engaphakathi edityaniswe nesixhobo sokutywina umlomo.Qinisekisa nje ukuba itywina ifakwe ngqo kwaye kubunzulu obuchanekileyo.Ukungaphumeleli ukubeka uphawu lwe-perpendicular kwi-shaft kunokubangela ukuvuza kwangoko.
Ukuba uneshafti esele isetyenzisiwe, kusenokubakho iringi yokunxiba apho yayifudula iyitywina yomlomo omdala.Ungaze ubeke indawo yoqhagamshelwano kwindawo yangaphambili yoqhagamshelwano.Ukuba oku akunakuphepheka, ungasebenzisa ezinye iimveliso ezityibilika phezu kweshafti ukunceda ukulungisa indawo eyonakeleyo.Oku kudla ngokukhawuleza kwaye kunoqoqosho ngakumbi kunokutshintsha i-shaft.Nceda uqaphele ukuba i-lip seal kufuneka ihambelane nobukhulu be-bushing ekhethiweyo.
Xa ufaka i-lip seal, qiniseka ukuba umsebenzi wenziwe ngokuchanekileyo.Ndibone abantu befaka amatywina besebenzisa ipunch ukuze bangachithi ixesha elongezelelweyo befumana isixhobo esifanelekileyo.Ukubethelwa ngesando ngengozi kunokugqabhuza imathiriyeli yetywina, kugqobhoze indlu yetywina, okanye kunyanzelise itywina kwindlu.
Qinisekisa ukuthatha ixesha lokufakela i-lip seal kwaye uthambise i-shaft kwaye utywine kakuhle ukuthintela ukukrazula okanye ukunamathela.Kwakhona qinisekisa ukuba isitywina somlomo silingana nobukhulu obuchanekileyo.Umngxuma kunye ne-shaft kufuneka ibe ne-interference fit.Ubungakanani obungachanekanga bunokubangela ukuba itywina lijike kwi-shaft okanye lingabikho kwisixhobo.
Ukunceda umlomo wakho uhlale usempilweni kangangoko, kufuneka ugcine ioyile yakho icocekile, ipholile kwaye yomile.Nakuphi na ukungcola kwioli kunokungena kwindawo yoqhagamshelwano kwaye konakalise i-shaft kunye ne-elastomer.Ngokunjalo, okukhona ioli ishushu, kokukhona ukunxitywa kwetywina kuya kwenzeka.Isitywina somlomo kufuneka sigcinwe sicocekile kangangoko kunokwenzeka.Ukupeyinta isitywina okanye ukungcola kolwakhiwo olujikelezileyo kunokubangela ubushushu obugqithisileyo kunye nokuwohloka ngokukhawuleza kwe-elastomer.
Ukuba ukhupha isitywina somlomo kwaye ubone i-grooves esikwe kwi-shaft, oku kunokuba ngenxa yongcoliseko lwe-particle.Ngaphandle kokungena komoya okulungileyo, lonke uthuli kunye nokungcola okungena kwisixhobo kungonakalisa nje iibheringi kunye neegesi, kodwa kunye ne-shaft kunye ne-lip seals.Kakade ke, kusoloko kungcono ukukhuphela ngaphandle izinto ezingcolisayo kunokuzama ukuzisusa.I-grooving inokuthi yenzeke ukuba ukulingana phakathi kwe-lip seal kunye ne-shaft kuqinile kakhulu.
Ubushushu obuphakamileyo ngoyena nobangela wokungaphumeleli kwetywina.Njengoko iqondo lokushisa likhuphuka, ifilimu yokuthambisa iba yincinci, ibangele ukusebenza okomileyo.Amaqondo obushushu aphezulu anokubangela ukuba ii-elastomers ziqhekeke okanye zidumbe.Rhoqo nge-57 degrees Fahrenheit ukunyuka kobushushu, ubomi be-nitrile seal buncitshiswa ngesiqingatha.
Umgangatho we-oyile unokuba yenye into echaphazela ubomi bokuvalwa kwemilebe ukuba iphantsi kakhulu.Kule meko, itywina liya kuba nzima ngokuhamba kwexesha kwaye aliyi kukwazi ukulandela i-shaft, ebangela ukuvuza.
Amaqondo obushushu aphantsi anokubangela ukuba amatywina abe brittle.Ukukhetha izithambiso ezifanelekileyo kunye netywina kunokunceda ukujamelana neemeko ezibandayo.
Amatywina nawo anokusilela ngenxa yokuphuma kweshaft.Oku kunokubangelwa kukungalungelelani kakuhle, iishafti ezingalungelelananga, iimpazamo zokwenziwa kwemveliso, njl.Ukongeza intwasahlobo ejikelezayo kuya kunceda ukulinganisa nakuphi na ukubaleka okunokulinganiswa.
Uxinzelelo olugqithisileyo ngomnye unobangela wokungaphumeleli kokutywinwa komlomo.Ukuba ukhe wahamba ngempompo okanye ugqithiso kwaye waphawula ukuba i-oyile iphuma kwiitywina, i-oyile ye-oyile yayicinezelekile ngenxa yesizathu esithile kwaye yavuza ukuya kwinqanaba lokunganyangeki.Oku kunokubangelwa sisiphefumlo esivalekileyo okanye i-cesspool engenamoya.Ukusetyenziswa koxinzelelo oluphezulu, uyilo olukhethekileyo lokutywina kufuneka lusetyenziswe.
Xa ujonga ukutywinwa komlomo, jonga ukunxiba okanye ukuqhekeka kwe-elastomer.Olu luphawu olucacileyo lokuba ubushushu buyingxaki.Kwakhona qinisekisa ukuba i-lip seal isekhona.Ndibone iimpompo ezininzi ezinetywina ezingalunganga ezifakiweyo.Xa iqalisiwe, ukungcangcazela kunye nokushukuma kubangela ukuba itywina liphume kwibhore kwaye lijikelezise kwishaft.
Nakuphi na ukuvuza kweoli ejikeleze itywina kufuneka kube yiflegi ebomvu efuna uphando olongezelelweyo.Amatywina agugileyo anokubangela ukuvuza, iminyango evalekileyo, okanye umonakalo kwiibheringi zeradial.
Xa uhlalutya ukungaphumeleli kwesitywina somlomo, nikela ingqalelo kwisitywina, i-shaft kunye ne-bore.Xa uhlola i-shaft, unokubona ngokuqhelekileyo uqhagamshelwano okanye unxibe indawo apho i-lip seal ikhona.Oku kuya kubonakala njengamanqaku okunxiba amnyama apho i-elastomer idibana neshaft.
Khumbula: Ukugcina isitywina somlomo sisebenza kakuhle, ipani yeoli kufuneka igcinwe ikwimeko entle.Ngaphambi kokupeyinta, vala onke amatywina, gcina amanqanaba e-oyile afanelekileyo, qinisekisa ukuba i-oyile epholileyo isebenza ngokufanelekileyo, kwaye ukhethe uyilo oluchanekileyo kunye nezixhobo.Ukuba usakha kwakhona kwaye ufaka izixhobo zakho, unokunika izitywina zomlomo kunye nezixhobo zakho ithuba lokulwa ukuze uphile.
I-NINGBO BODI SEALS ngumvelisi oqeqeshiweyo weamatywina oyilekunye namacandelo okutywinwa okuphezulu.
Ixesha lokuposa: Nov-29-2023