yintoni itywina yeoli kwaye yintoni umahluko phakathi kwe-oyile ye-TC, itywina yeoli ye-TB, isitywini se-oyile ye-TA?

Umatshini uvelisa isitywina se-oyile

• I-TC yindlela yokumela imigangatho emitsha yesizwe.

EJapan, eTaiwan nakwezinye iindawo.I-FB yindlela yokumelwa yomgangatho wesizwe omdala, kunye nesakhiwo esifanayo kunye nomxholo.Ngokufanayo, imigangatho emininzi yaseYurophu isebenzisa i-AS ukumela i-TC kunye ne-FB oil seals.Imigangatho ye-FB kunye ne-FC yi-GB10708.3-189.I-TC yindlela yokumelwa yemigangatho emitsha yesizwe, iJapan, iTaiwan, kunye nezinye iindawo.I-TC oil seal licandelo lomatshini elisetyenziselwa ukutywina i-oyile (i-oyile yeyona nto ixhaphakileyo elulwelo kwiinkqubo zothumelo, ekwabizwa ngokuba yinto engamanzi ngokubanzi).

(1).I-FB yindlela yokumelwa yomgangatho wesizwe omdala, kunye nesakhiwo esifanayo kunye nomxholo.

(2).Imigangatho emininzi yangaphakathi eYurophu isebenzisa i-AS oil seal ukumela i-TC kunye ne-FB oil seals.

Izitywina zeoyile zisetyenziswa kakhulu kumasimi ahlukeneyo amashishini, ngakumbi kwizixhobo zoomatshini ezinjengeenkqubo zamanzi, iinjini, iimpompo, iibhokisi zegiya, izixhobo zothumelo kunye neemoto.Bancedisa ukugcina ukusebenza okuqhelekileyo kwezixhobo zoomatshini, ukwandisa ubomi benkonzo yezixhobo, ukunciphisa iindleko zokugcina, kunye nokuqinisekisa ukusebenza kakuhle kwezixhobo.

Uyilo kunye nokukhethwa kweempawu ze-oyile kufuneka kuthathelwe ingqalelo izinto ezininzi, kubandakanywa indawo yokusebenza, uhlobo lolwelo, uluhlu lobushushu, iimfuno zoxinzelelo, iimfuno zesantya, njl.Iindidi eziqhelekileyo zeoli yeoli ziquka i-rotary shaft seals, i-piston seals, i-static seals, njl njl. Iimpawu ze-oyile zihlala zinemilebe yangaphakathi nangaphandle, kunye nomlomo wangaphakathi uqinile ngokuchasene ne-shaft ejikelezayo kunye nomlomo wangaphandle ngokuqinileyo ngokuchasene nezixhobo ezimiselweyo.Oku kudala umphumo wokutywinwa ngenxa yokungqubuzana phakathi komlomo wangaphakathi nangaphandle ngexesha lokusebenza kwe-shaft ejikelezayo.

Ngamafutshane, izitywina zeoyile zidlala indima ebalulekileyo kumasimi anje ngoomatshini bobunjineli, iimoto, kunye nezixhobo zefektri, ukuqinisekisa ukusebenza okuqhelekileyo kwezixhobo zoomatshini, ukuthintela ukuvuza kolwelo kunye nokungcola kwangaphandle ukuba kungangeni, ngaloo ndlela kuqinisekisa uzinzo, ukhuseleko kunye nokusebenza kakuhle izixhobo.

1.Indlela yokubonakalisa uphawu lweoli

Iindlela zokubonisa eziqhelekileyo:

Uhlobo lwe-oyile yetywina - i-diameter yangaphakathi - i-diameter yangaphandle - ukuphakama - impahla

Umzekelo, i-TC40 * 62 * 12-NBR imele i-double skeleton oil seal imilebe ephindwe kabini ene-diameter yangaphakathi ye-40, i-diameter yangaphandle ye-62, ubukhulu be-12, kunye ne-rubbe ye-nitrile.

2.Material of oil seal

Irabha ye-Nitrile (NBR): i-resistant-resistant, i-oil resistant (ayinakusetyenziswa kwimidiya ye-polar), ukumelana nobushushu: -40 ~ 120 ℃.

Irabha ye-nitrile ene-Hydrogenated (HNBR): Ukumelana nokunxiba, ukumelana ne-oyile, ukuxhathisa ukuguga, ukumelana nobushushu: -40 ~ 200 ℃ (yomelele kune-NBR ukumelana nobushushu).

I-Fluorine adhesive (FKM): i-asidi kunye ne-alkali ukumelana, i-oyile i-oyile (yonke i-oyile i-resistant), ukumelana nobushushu: -20 ~ 300 ℃ (ukumelana neoli kungcono kunezi zimbini zingasentla).

Irabha yePolyurethane (TPU): Ukumelana nokunxiba, ukuxhathisa ukuguga, ukumelana nobushushu: -20 ~ 250 ℃ (ukumelana nokuguga okugqwesileyo).

Irabha yeSilicone (PMQ): ukumelana nobushushu, ukumelana nokubanda, ukunyanzeliswa kwesethi encinci, amandla aphantsi omatshini, ukumelana nobushushu: -60 ~ 250 ℃ (ukumelana nokushisa okugqwesileyo).

I-Polytetrafluoroethylene (PTFE): Ukuzinza kweekhemikhali ezilungileyo, ukuchasana neendaba ezahlukeneyo ezifana ne-asidi kunye ne-alkali, i-oyile, ukumelana nokunxiba, ukumelana nobushushu obuphezulu, amandla aphezulu omatshini, kunye nokuzicoca kakuhle.

Ngokubanzi, izinto eziqhelekileyo ezisetyenziselwa ukutywinwa kweoyile ye-skeleton yirabha ye-nitrile, i-fluororubber, irabha ye-silicone, kunye ne-polytetrafluoroethylene.Ngenxa yokuzithambisa kwayo kakuhle, ngakumbi xa idityaniswe ngobhedu, zineziphumo ezingcono, kwaye zonke zisetyenziselwa ukwenza imisesane yokugcina, imisesane yeGly, kunye neStuart seals.

Ukwahlula imodeli ye-oyile ye-skeleton oil seal

I-C-type skeleton oil seal inokwahlulwa ibe ziintlobo ezintlanu: uhlobo lwe-SC, uhlobo lwe-TC, uhlobo lwe-VC, uhlobo lwe-KC, kunye nohlobo lwe-DC.Ziyi-oyile yomlomo omnye wamathambo angaphakathi, i-oyile ye-skeleton ephindwe kabini, i-oyile yomlomo omnye, i-oyile yomlomo omnye, i-oyile ye-skeleton yangaphakathi, i-oyile ye-oyile ephindwe kabini, kunye ne-oyile ye-oyile ye-skeleton ephindwe kabini.(Sincoma ukuba ubeke ingqalelo kwi-akhawunti esemthethweni ye-"Mechanical Engineer" ukuze ubambe ulwazi lwempahla eyomileyo kunye nolwazi lweshishini ngexesha lokuqala)

I-G-type skeleton oil seal ine-threaded shape ngaphandle, efana nohlobo lwe-C.Ilungiswa kuphela ukuba ibe ne-threaded shape ngaphandle kwe-teknoloji, efana nomsebenzi we-O-ring, engagcini nje ukuqinisa umphumo wokutywinwa kodwa iphinde ilungise i-oil seal ngaphandle kokukhulula.

I-oyile ye-B-type skeleton oil seal ine-adhesive kwicala langaphakathi le-skeleton okanye akukho nto ibambelela kumacala omabini e-skeleton.Ukungabikho kwe-adhesive kuya kuphucula ukusebenza kokutshatyalaliswa kobushushu.

I-A-type skeleton oil seal iyisitywina yeoli esetyenzisiweyo kunye nesakhiwo esiyinkimbinkimbi xa kuthelekiswa nezi ntlobo zintathu zingentla, ezibonakaliswe ngumsebenzi ongcono kunye noxinzelelo oluphezulu.

3.Zonke zineendlela ezahlukeneyo zokutywinwa kweoyile kwaye zibhekiselwa kuzo njengezitywina zeoyile ngokubanzi ngolu hlobo lulandelayo:

4.Umgaqo-siseko wokutywina kunye nokuSetyenziswa kwe-Oil Seal

I-skeleton oil seal yahlulwe yangamacandelo amathathu: i-self tightening spring, ukutywina umzimba, kunye nokuqinisa amathambo. , le filimu yeoli ineempawu zokuthambisa ulwelo.Uhlalutyo lomgaqo-siseko wokutywinwa: Ngaphantsi kwesenzo se-oyile ye-skeleton seal, ukuqina kwefilimu yeoli ngokuchanekileyo kwenza i-crescent surface ekupheleni koqhagamshelwano phakathi kwefilimu yeoli kunye nomoya, ukuthintela ukuvuza kwe-oyile. indawo yokusebenza kunye nokufezekisa ukutywinwa kwe-shaft ejikelezayo.Ikhono lokutywina lokutywinwa kweoli lixhomekeke kubukhulu befilimu yeoli kwindawo yokutywina.Ukuba ubukhulu bukhulu kakhulu, uphawu lweoyile luya kuvuza;Ukuba ubukhulu buncinci kakhulu, ukungqubuzana okomileyo kunokwenzeka, kubangele ukunxiba kwisitywina seoli kunye ne-shaft;Akukho filimu yeoli phakathi komlomo wokutywina kunye ne-shaft, enokubangela lula ukufudumeza kunye nokugqoka.Ngoko ke, ngexesha lofakelo, kuyimfuneko ukusebenzisa ioli kwindandatho yokutywina ngelixa uqinisekisa ukuba i-oyile ye-skeleton ye-oyile i-perpendicular kwi-centerline ye-shaft.Ukuba ayinayo i-perpendicular, umlebe wokutywina wesitywina seoli uya kukhupha ioli yokuthambisa kwi-shaft kwaye ibangele ukugqithiswa komlomo wokutywina.Ngexesha lokusebenza, isithambisi esingaphakathi kweqokobhe siyaphuma kancinane ukuze senze umphezulu wokutywina.

 5. Umsebenzi we-skeleton oil seal

Ngokubanzi, amacandelo adinga i-lubrication kumacandelo othumelo abekwe yedwa kumacandelo aphumayo ukuthintela ukuvuza kweoyile yokuthambisa.Ngokuqhelekileyo isetyenziselwa ukujikeleza i-shafts kwaye luhlobo lwe-shaft ejikelezayo ye-lip seal.I-skeleton ifana neentsimbi zentsimbi ngaphakathi kwecandelo lekhonkrithi, idlala indima yokomeleza kunye nokuvumela isitywina seoli ukuba sigcine imilo kunye noxinzelelo.Ngokohlobo lwamathambo, lunokwahlulwa lube ngamathambo angaphakathi, i-oil seal, i-oil skeleton yangaphandle, kunye ne-oyile yangaphakathi nangaphandle eveziweyo.I-skeleton oil seal yenziwe ngerabha ye-nitrile ekumgangatho ophezulu kunye nepleyiti yensimbi, enomgangatho ozinzileyo kunye nobomi benkonzo ende.

1. Thintela udaka, uthuli, ukufuma, njl.njl ekungeneni kwi-bearing evela ngaphandle;

2. Ukunciphisa ukuvuza kweoli yokuthambisa kwiibheringi.Imfuno yokutywinwa kweoli kukuba imilinganiselo (i-diameter yangaphakathi, i-diameter yangaphandle, kunye nobukhulu) kufuneka ihambelane nemimiselo;Funa i-elasticity efanelekileyo ukuze ubambe ngokufanelekileyo i-shaft kwaye unikeze umphumo wokutywina;Kufuneka ikwazi ukumelana nobushushu, inxibe, yomelele, ixhathise kumajelo eendaba (afana neoli okanye amanzi), kwaye ibe nobomi obude benkonzo.

6.Ukukhethwa kwezitywina zeoli

Ukukhethwa kweempawu zeoli kufuneka kusekelwe kwindawo yokutywina kunye neemeko zokusebenza.Indawo yokutywina idinga ukukhetha izinto zetywina leoli, kwaye iimeko zokusebenza ziqwalasela ikakhulu uxinzelelo lokusetyenziswa, isantya somgca wokusebenza, kunye noluhlu lobushushu bokusebenza.

Xa ukhetha izinto eziphathekayo zokutywinwa kweoli, kuyimfuneko ukuqwalasela ukuhambelana kwezinto kunye nomgangatho osebenzayo, ukulungelelaniswa nomgangatho wokushisa osebenzayo, kunye nokukwazi komlomo ukulandela ukujikeleza kwesantya esiphezulu se-shaft ejikelezayo.Xa usebenza ngesitywina se-oyile ngokubanzi, ubushushu bomlomo wayo bungama-20 ~ 50 ℃ ngaphezulu kobushushu bendawo esebenzayo.Ingqalelo kufuneka ihlawulwe xa ukhetha izinto zokutywinwa kweoyile.

Uxinzelelo lwenkonzo yeetywina zeoyile eziqhelekileyo azidluli kwi-0.05MPa.Xa uxinzelelo olusebenzayo ludlula eli xabiso, i-oil resistant oil seal kufuneka ikhethwe.(Sincoma ukuba ubeke ingqalelo kwi-akhawunti esemthethweni ye-"Mechanical Engineer" ukuze ubambe ulwazi lwempahla eyomileyo kunye nolwazi lweshishini ngexesha lokuqala)

Ngaphantsi kwemeko yobubanzi obufanayo, izitywina zeoyile ezenziwe ngezinto ezahlukeneyo zinezakhono ezahlukeneyo zokuziqhelanisa nesantya somgca wokujikeleza kweshaft.Uluhlu lwesantya esisetyenziselwe ukutywinwa kwe-oyile ngokuqhelekileyo lungaphantsi kwe-15m/s.

Uluhlu olusebenzayo lwetywina leoli luhambelana nezinto ezisetyenzisiweyo: -40 ~ 120 ℃ yerubha ye-nitrile (NBR), -30 ~ 180 ℃ yerabha ye-acrylic (ACM), kunye -25 ~ 300 ℃ ye-fluororubber (FPM).

7.Iimfuno zokuyila iishafti ezihambelanayo kunye nemingxuma

Uyilo lweshaft:

1. Uburhabaxa bomphezulu, ngenxa yokumahluko kwisantya seshaft kunye nomthamo we-oyile, kunokuchaphazela ngokubanzi ukuvuza kwetywina le-oyile kunye nokunxiba ukuba uburhabaxa be-shaft bukhulu kakhulu okanye buncinci kakhulu.Uluhlu oluvumelekileyo lobunzima bomphezulu we-shaft yi-Rz1.0 ~ 5.0 μ M;I-Ra0.2 ~ 0.8 μ M. Thatha i-oyile ye-2.5-1.6 ye-oyile ye-shaft ejikelezayo μ MRz.

2. Ukuqina, ubunzima bomphezulu we-shaft ejikelezayo ngokuqhelekileyo kuthathwa njenge-≥ 35HRC.Xa i-medium imdaka, kukho ungcoliseko oluvela ngaphandle, okanye isantya somphezulu weshaft yi>12m/s, ukuqina komphezulu we-shaft kufuneka kube ngaphezulu kwe-55HRC, kwaye ubunzulu bomaleko wokucima kumphezulu we-shaft bube>>0.2 mm.

3. I-chamfer ephakanyisiweyo ye-shaft iphakathi kwe-15 ° kunye ne-30 °, ukwenzela ukuba kuqinisekiswe ukuba i-oil seal ifakwe ngokwenene ngaphandle kokulimaza umlomo we-oil seal.

4. Ukucutshungulwa kwe-shaft kunye nokulungiswa okuchanekileyo kwe-shaft zizinto eziqinisekileyo zokuqinisekisa ukusebenza okuqhelekileyo kwenkqubo yokutywinwa.Indlela efanelekileyo yokucubungula i-oyile yokutywinwa kwe-oyile kukubonelela ngokuchaneka kokusila ngokuthe tye kunye nokuyipolisha ngephepha le-emery.Iindlela zokusetyenzwa ezingafanelekanga kukucocwa komatshini, ukuchaneka kwe-ultra precision, ukugoqa, kunye ne-diamond sandpaper polishing kwi-lathe (i-sandpaper igudiswe yi-axial movement).

5. Izinto ze-shaft ziyintsimbi eqhelekileyo ye-carbon structural, efana ne-C35 kunye ne-C45, kunye nentsimbi etyhidiweyo, i-ceramics, kunye neplastiki yentlaka.Nangona kunjalo, ukutywinwa kwetywina leoli kwizinto ezintathu zokugqibela zeshaft kuneziphene.

1. Ixabiso lokufakela elicetyiswayo yi-15 ° ~ 30 °.

2. Izinto eziphathekayo zegumbi yintsimbi okanye isinyithi, kwaye kuyamkeleka ukusebenzisa isitywina seoli kunye nerubha okanye isinyithi sangaphandle.Ngokuqhelekileyo, ii-alloys ezikhanyayo kunye ne-resins zine-coefficient ephezulu yokwandiswa kwe-thermal, okwenza ukuba kukulungele ukusebenzisa izitywina zeoyile ezinerabha ezijikelezileyo.

3. Izakhiwo zecavity ezingafanelekanga, ezifana nezo zicutshungulwa ngokugxilwa, ezo zifakwe ngokudibanisa i-threaded, kunye ne-cavities e-split.

8.Ukufakwa kwetywina leoli

I-1.Ngaphambi kokufakela, isitywina seoli kufuneka sifakwe ngokufanelekileyo kunye ne-lithium ester equkethe i-molybdenum disulfide phakathi kwemilebe yokuthintela ukugqoka okomileyo emlonyeni xa i-shaft iqala ngokukhawuleza, echaphazela ukuphazamiseka komlomo.Indibano ifanele iqhutywe ngokukhawuleza.Ukuba isihlalo sokutywinwa kweoli asifakwanga ngokukhawuleza, kucetyiswa ukuba usigubungele ngendwangu yokukhusela izinto zangaphandle ukuba zibambelele kwisitywina seoli.Izandla okanye izixhobo ezisetyenziselwa ukufaka igrisi ye-lithium kufuneka zicoceke.(Sincoma ukuba ubeke ingqalelo kwi-akhawunti esemthethweni ye-"Mechanical Engineer" ukuze ubambe ulwazi lwempahla eyomileyo kunye nolwazi lweshishini ngexesha lokuqala)

2. Isitywina seoli kufuneka sifakwe sicaba ngaphandle kokuthamba.Kunconywa ukusebenzisa izixhobo ze-hydraulic okanye izixhobo ze-sleeve zofakelo.Uxinzelelo akufanele lube phezulu kakhulu, kwaye isantya kufuneka sifane kwaye sicothe.

3. Xa ufaka i-oil seal, ioli okanye ioli yokuthambisa kufuneka isetyenziswe kwaye i-shaft end kunye negxalaba kufuneka ijikelezwe.

4.Xa ufaka isitywina se-oyile, qiniseka ukuba ujongene nesiphelo somlomo ukuya kwicala leoli etywiniweyo, kwaye ugweme ukuhlanganisana okubuyela umva.

5. Xa ufaka isitywina se-oyile kumngxuma wokuhlala, izixhobo ezikhethekileyo kufuneka zisetyenziswe ukuyityhala ukuze kuthintelwe ukutenxa.

6. Kufuneka kuthathwe amanyathelo ahlukeneyo ukuthintela umonakalo womlomo kwimicu, izitshixo, i-splines, njl.

7. Xa udibanisa isitywina seoli, gwema ukonakalisa umphezulu ngaphakathi kwendawo kunye nomphezulu we-shaft.

8. I-oil seal esetyenzisiweyo, nokuba ikhangeleka kakuhle, ayinakuphinda isetyenziswe kwaye kufuneka ithathelwe indawo entsha.

9. Xa kukho imikrwelo okanye i-rust ebusweni be-shaft, kufuneka ilungiswe.

Xa ufaka isitywina esitsha seoli, ukwenzela ukuba usigcine kude nommandla wokudibanisa nomlomo omdala, i-gasket kufuneka isetyenziswe ukuphepha iimpawu zokuqala zokungqubuzana.

isalathiso olitywina lofakelo

9.Itheyibhile yesayizi ye-TC oil seal, i-oyile ye-SC, itywina yeoli, itywina le-oyile ye-AS.