PTFE gland kulongedza ndi njira yabwino komanso yodalirika yosindikizira yomwe imagwiritsidwa ntchito m'mafakitale osiyanasiyana.Imapereka magwiridwe antchito abwino kwambiri osindikizira komanso kukhazikika, ndikupangitsa kuti ikhale chisankho choyamba chosindikiza ma shafts ndi ma valve.M'nkhaniyi, tiwona momwe PTFE gland kulongedza imagwirira ntchito komanso chifukwa chake imatengedwa kuti ndi imodzi mwazinthu zabwino kwambiri zosindikizira zomwe zilipo.
Gland packing ndi chinthu chosindikizira chomwe chimagwiritsidwa ntchito kuteteza kutayikira kwa mapampu, ma valve ndi zida zina zozungulira.Nthawi zambiri amapangidwa ndi zida zoluka kapena zopindika monga graphite, Teflon, kapena ulusi wa aramid.Zida zimenezi zinasankhidwa chifukwa cha kuthekera kwawo kupirira kutentha kwakukulu, kupanikizika ndi malo ovuta a mankhwala.
PTFE, kapena polytetrafluoroethylene, ndi fluoropolymer kupanga chodziwika bwino kwambiri kukana mankhwala ndi kutsika kukangana katundu.Amadziwika kuti Teflon ndipo ndi chizindikiro cholembetsedwa kukampani yamankhwala Chemours.PTFE imagonjetsedwa ndi mankhwala ambiri, ma asidi ndi zosungunulira, zomwe zimapangitsa kuti zikhale zoyenera kunyamula mapulogalamu a gland komwe zinthu zosindikizira zimafunika kupirira zowawa.
Mfundo yogwira ntchito ya PTFE gland kulongedza ndiyosavuta koma yothandiza kwambiri.Zinthu zonyamula zimayikidwa mozungulira tsinde kapena tsinde ndikukanikizidwa ndi gland.Gland ndi chisindikizo chomakina chomwe, chikakamizidwa, chimapanga chisindikizo chotetezeka, chosadukiza.Kuponderezedwa kwa zinthu zonyamula katundu kumapanga chotchinga pakati pa shaft kapena ndodo ndi nyumba, kuteteza madzi kapena mpweya uliwonse kuthawa.
Chimodzi mwazabwino zazikulu za PTFE gland kulongedza ndikutha kugwirizana ndi mawonekedwe a shaft kapena tsinde la valavu, kuonetsetsa kuti chisindikizo cholimba ngakhale pansi pazikhalidwe zosiyanasiyana zogwirira ntchito.Kusinthasintha kumeneku kumapangitsa kuti kulongedzako kulipirire tsinde lililonse kapena tsinde molakwika kapena kusuntha, kuteteza kutayikira ndi kuchepetsa zofunika kukonza.
PTFE's low coefficient of friction imawonetsetsa kuti ikugwira ntchito bwino ndikuchepetsa kuvala pa shaft kapena tsinde.Izi sizimangochepetsa mwayi wotuluka, komanso zimakulitsa moyo wagawo.Kuonjezera apo, PTFE gland kulongedza ali ndi otsika coefficient of matenthedwe kukula, kupangitsa kugonjetsedwa ndi kusinthasintha kwa kutentha ndi mantha matenthedwe.
Mapaketi a gland opangidwa kuchokera ku PTFE amadziwikanso chifukwa chodzipangira okha mafuta.Imasunga filimu yopyapyala yopaka mafuta patsinde kapena tsinde, kumachepetsanso kukangana ndikupewa kuvala kwambiri.Kudzitchinjiriza paokha kumapangitsa kuti PTFE gland kulongedza ikhale yoyenera nthawi zina zowuma kapena zosakwanira zopangira mafuta.
Kuonjezera apo, PTFE gland kulongedza akhoza kupirira kutentha kuyambira mikhalidwe cryogenic mpaka kutentha kwambiri.Imakhalabe yokhazikika ndipo imasunga katundu wake wosindikiza ngakhale pa kutentha kwakukulu, ndikupangitsa kukhala chisankho chodalirika pazofuna ntchito.
Mwachidule, PTFE gland kulongedza ndi yothandiza komanso zosunthika kusindikiza njira zosiyanasiyana ntchito mafakitale.Kukaniza kwake kwamphamvu kwamankhwala, mawonekedwe ocheperako komanso magwiridwe antchito abwino kwambiri osindikizira zimapangitsa kuti ikhale chisankho choyamba pakusindikiza ma shaft ndi ma valve.Kaya m'malo otentha kwambiri, malo opangira mankhwala, kapena ntchito zina zofunika, PTFE gland kulongedza imapereka chisindikizo chotetezeka, chopanda kutayikira chomwe chimapangitsa kuti zida zigwire bwino ntchito ndikuchepetsa zofunika kukonza.
Nthawi yotumiza: Sep-08-2023