Njira zotsekera ma bearing zitha kugawidwa m'magulu awiri: ma contact seals ndi ma non-contact seals. Kusankha kumeneku kumaphatikizapo kusinthana pakati pa sealing effect ndi rotational rotational speed yovomerezeka.
Zisindikizo zolumikizirana: "Kulumikizana" kuti mutseke
Mu mtundu uwu wa chisindikizo, chidutswa chotsekacho chimakhudzana mwachindunji ndi shaft yozungulira, ndipo chimagwirizana bwino kuti chisatuluke ndi kuipitsidwa. Ubwino wake ndi kutseka bwino, makamaka popewa fumbi ndi madzi. Vuto lake ndilakuti chifukwa cha kukangana kotsetsereka, kutentha ndi kuwonongeka kumachitika, zomwe zimachepetsa liwiro lake lozungulira.
Zisindikizo zodziwika bwino zimaphatikizapo mitundu iyi:
Chisindikizo cha gasket: Kukanikiza felt pa shaft kuti mutseke. Kapangidwe kake ndi kosavuta, mtengo wake ndi wotsika, koma kutsekeka kwake ndi koipa ndipo kumatha kusweka. Ndikoyenera kugwiritsa ntchito mafuta ocheperako (<4-5m/s) komanso kutentha kochepa (<90℃).
Chisindikizo cha Chikho/Milomo: Kugwiritsa ntchito makapu a rabara osagwira mafuta kapena mphete zotsekera zooneka ngati milomo kuti mugwire mwamphamvu shaft, nthawi zambiri zimalimbikitsidwa ndi masipu. Mphamvu yotsekera ndi yabwino kuposa mphete yofewa, koma rabalayo imakalamba ndi kutha. Ndi yoyenera mafuta othamanga pang'ono (<6-7m/s) kapena mafuta odzola. Mukayika, samalani ndi komwe ikupita: mlomo uyenera kuyang'ana mkati kuti uteteze mafuta ndi kunja kuti uteteze fumbi.
Mphete zotsekera zooneka ngati O/J/U: Zopangidwa ndi chikopa, pulasitiki kapena rabala yosagwira mafuta, kutengera kusinthasintha kwawo kuti zitseke. Mphete yooneka ngati O ili ndi kapangidwe kosavuta, pomwe zotsekera za milomo zooneka ngati J ndi U zimakhala ndi mphamvu yabwino yotsekera. Zingagwiritsidwe ntchito popaka mafuta ndi mafuta ndipo zimakhala ndi kutentha kwakukulu komanso liwiro kuposa mphete yofewa.
Chisindikizo cha chimango: Mtundu wabwino kwambiri wa chisindikizo cha chikho, chokhala ndi chimango chachitsulo choyikidwa mkati kuti chikhale ndi mphamvu zowonjezera. Chili ndi mphamvu komanso kulimba bwino, ndipo pakadali pano ndi njira yotsekera yomwe imagwiritsidwa ntchito kwambiri. Nthawi zambiri imagwiritsidwa ntchito pa liwiro lapakati (<7m/s), monga mabokosi onyamula mapampu a centrifugal.
Chisindikizo cha mphete yotsekera: Mphete yachitsulo yokhala ndi notch, yodalira kusinthasintha kuti ipumule pa gawo losasunthika. Kapangidwe kake ndi kovuta kwambiri. Ubwino wake ndi wakuti imatha kupirira liwiro lalikulu kwambiri (mpaka 100m/s), lomwe nthawi zambiri limagwiritsidwa ntchito m'malo otentha kwambiri, othamanga kwambiri, komanso olemera.
Zisindikizo Zosakhudzana: "Gap" ya liwiro lozungulira
Mu mtundu uwu wa chisindikizo, pali mpata wochepa kwambiri pakati pa chidutswa chotsekera ndi shaft yozungulira, popanda kukhudzana mwachindunji. Ubwino wake ndi wakuti sichimayambitsa kukangana ndi kuwonongeka, makamaka koyenera pa nthawi ya liwiro lapamwamba komanso kutentha kwambiri. Vuto lake ndilakuti mphamvu yotsekera ndi yofooka, ndipo pali zoletsa zina pa mphamvu yosalowa madzi komanso yosafumbi.
Zisindikizo zodziwika bwino zosakhudzana ndi ma contact zimaphatikizapo mitundu iyi:
Chisindikizo cha Mpata: Kusiya mpata wopapatiza kwambiri (nthawi zambiri 0.1-0.3mm) pakati pa shaft ndi chivundikiro cha bearing. Kapangidwe kake ndi kosavuta, koma zotsatira zake zimakhala zochepa. Mwa kutsegula mpata wooneka ngati mphete m'mpatamo ndikudzaza ndi mafuta odzola, zotsatira zake zotsekera zitha kuwongoleredwa.
Chisindikizo cha Maze: Kupanga njira yovuta ya "maze" pakati pa gawo lozungulira ndi gawo losasunthika. Pogwiritsa ntchito njira yovuta kuti muwonjezere kwambiri kukana kutuluka kwa madzi, zotsatira zake zimakhala zabwino kwambiri, ndipo zotsatira zake zimakhala zabwino pamene liwiro likuwonjezeka. Yoyenera malo odetsedwa komanso onyowa.
Chisindikizo cha mphete ya mafuta: Kugwiritsa ntchito mphamvu ya centrifugal ya mphete ya mafuta kuti muponye mafuta omwe atuluka. Kutsekako ndikodalirika, koma liwiro lozungulira la khosi la shaft liyenera kukhala losachepera 5-6m/s. Nthawi zambiri limagwiritsidwa ntchito m'makina opangira mafuta kapena popatula malo opangira mafuta ndi mafuta.
Chishango cha fumbi (Chishango, mtundu wa Z): Chopangidwa ndi mbale zachitsulo zosindikizidwa, zokhazikika pa mphete yakunja, ndikupanga mpata wozungulira ndi mphete yamkati. Mphamvu ya kukangana ndi yaying'ono, magwiridwe antchito achangu ndi abwino, imatha kuletsa tinthu tambiri ta fumbi, koma kwenikweni sichitha madzi. Choyenera kugwiritsidwa ntchito pazinthu zonse zomwe sizingalowe fumbi popanda zofunikira zothira madzi.
Mphete yotsekera yosakhudzana (Chisindikizo, mtundu wa RZ): Yopangidwa ndi rabara yokhala ndi chimango, mlomo wotsekera umapanga mpata wopapatiza kwambiri ndi mphete yamkati. Mphamvu ya kukangana ndi yaying'ono, magwiridwe antchito achangu ndi abwino, mphamvu yolimbana ndi fumbi ndi yabwino kuposa chishango cha fumbi, koma si yoyenera malo okhala ndi madzi kapena chinyezi.
Mwachidule, posankha, mutha kutsatira mfundo zotsatirazi:
Pofuna kutseka bwino kwambiri, osaopa kuthamanga pang'ono: Sankhani zisindikizo zolumikizana, monga zisindikizo zamafuta a chimango.
Kufunafuna zomatira zothamanga kwambiri komanso zopepuka zomwe sizingakhudze fumbi: Sankhani zomatira zosakhudzana ndi fumbi, monga chishango cha fumbi (mtundu wa Z) kapena mphete yomatira ya rabara yosakhudzana ndi fumbi (mtundu wa RZ). Malo oipa, okhala ndi fumbi kapena chinyezi chambiri: Sankhani zomatira zomatira (monga mtundu wa RS) kapena zomatira zomatira zomatira zomatira.
Njira yothira mafuta kuti mafuta asatayike: Ganizirani kugwiritsa ntchito mphete zotulutsira mafuta kapena zomatira pamilomo.
Mu ntchito zothandiza, ndizofala kuphatikiza njira zingapo zotsekera kuti mupeze zotsatira zabwino