Yiziphi izici zokukhetha i-O-ring?

Ekusetshenzisweni kwe-O-rings, izimo zokusebenza ezithile kanye nezimo zokusetshenziswa zidinga ukucatshangelwa.Izinga lokushisa nokucindezela kuzoba nemiphumela kanye nokulahlekelwa ku-O-ring seal.Ngakho-ke, amaphuzu angu-5 alandelayo adinga ukucatshangelwa ekusetshenzisweni kwezimpawu zenjoloba ye-O-ring:

1. Izimo zokusebenza nezimo zokusebenza;

2. Ukuhambisana komkhiqizo nendawo yokusebenza, bese ucabangela ingcindezi, izinga lokushisa, isikhathi esiqhubekayo sokusebenza, umjikelezo wokusebenza nezinye izimo endaweni yophawu, kanye nokwenyuka kwezinga lokushisa okubangelwa ukushisa kokungqubuzana nakho kudingeka kucatshangelwe ezikhathini eziphendukayo;

3. Ifomu lokuvala: Uma uphawu lwe-shaft lufakwa ngokukhazimulayo, ukuchezuka phakathi kobubanzi bangaphakathi bendandatho ye-O kanye nobubanzi obuzovalwa kufanele kube kuncane ngangokunokwenzeka;ngophawu lwembobo, ububanzi obungaphakathi kufanele bulingane noma bube buncane kunobubanzi begroove.Uma ufaka i-axially, isiqondiso sokucindezela kufanele futhi sicatshangelwe.Lapho kusetshenziswa ingcindezi yangaphakathi, ububanzi bangaphandle bendandatho ye-O kufanele bube bukhudlwana ngo-1% ~ 2% kunobubanzi obungaphandle bomsele.Uma ububanzi obungaphandle bungaphansi kwengcindezi, ububanzi bangaphakathi bendandatho ye-O kufanele bube buncane kune-groove1%~3%.

4. Ezinye izici ezithinta ukusebenza kokubekwa uphawu

I-1) Ukuqina: Thola inani lokucindezelwa kwe-O-ring kanye negebe eliphakeme elivumelekile lokukhipha i-groove;

I-2) Igebe le-Extrusion: ingcindezi yesistimu, ububanzi besigaba se-O-ring nobulukhuni bezinto ezibonakalayo.

I-3) Ukucindezelwa kwe-deformation unomphela: Endabeni yokucindezela, ukuze kuvinjwe ukuguquguquka kwepulasitiki unomphela.Ukucindezelwa okuphezulu okuvunyelwe yi-O-ring cishe ku-30% kuma-static seal futhi cishe ku-20% kuma-dynamic seal.

4) Inani lokucindezelwa kwangaphambili: Ukuze uqinisekise ukucinana emseleni we-O-ring, inani lokuqala lokucindezela kufanele ligcinwe.Inani lokuminyanisa ngaphambilini elihlobene nobubanzi besigaba ngokuvamile liba ngu-15% ~ 30% ophawu olumile.Cishe i-9% ~ 25% kuphawu oluguquguqukayo.

I-5) Ukungezwani nokucindezelwa: Ngophawu lwembobo, i-O-ring isesimweni eseluliwe, futhi ukunwetshwa okuphezulu okuvunyelwe ngu-6%.Ngophawu lwe-shaft, indandatho ye-O icindezelwa eduze kwesiyingi, futhi ukucindezelwa kwe-circumference okuvunyelwe okuphezulu ngu-3%.

5. I-O-ring isetshenziselwa ukunyakaza okujikelezayo okuphansi kwesivinini kanye ne-rotary shaft seal enomjikelezo omfushane wokusebenza.Uma isivinini se-peripheral singaphansi kuka-0.5m/s, ukukhethwa kwe-O-ring kungase kusekelwe ezindinganisweni ezijwayelekile zokuklama;lapho isivinini se-peripheral sikhulu kuno-0.5m/s, Kudingeka ucabangele isenzakalo sokuthi indandatho yenjoloba enwetshiwe iyancipha ngemva kokushiswa, futhi indandatho yokuvala kufanele ikhethwe ukuze ububanzi bangaphakathi bube bukhudlwana ngo-2% kunobubanzi umphini ovaliwe.