3, bawul bawul: an samo asali ne daga bawul ɗin fulogi, buɗewarta da sassan rufewa ball ne, ta yin amfani da ƙwallon a kusa da jujjuyawar axis 90° don gane manufar buɗewa da rufewa.Ana amfani da bawul ɗin ball galibi don yankewa, rarrabawa da canza alkiblar matsakaiciyar kwarara a cikin bututun.Bawul ɗin ƙwallon ƙwallon mai buɗewa mai siffar v shima yana da kyakkyawan aikin ƙa'ida.
Amfani:
(1) Tare da ƙananan juriya na kwarara (a zahiri 0);
② Saboda ba za a makale a wurin aiki ba (idan babu mai mai), ana iya dogara da shi ga kafofin watsa labarai masu lalata da ƙarancin ruwan tafasa;
A cikin nau'i mai yawa na matsa lamba da zafin jiki, zai iya cimma cikakkiyar hatimi;
④ Yana iya gane saurin buɗewa da rufewa, kuma lokacin buɗewa da rufewa na wasu tsarin shine kawai 0.05-0.1s don tabbatar da cewa ana iya amfani dashi a cikin tsarin sarrafa kansa na gadon gwaji.Saurin buɗewa da rufewa na bawul, aiki ba tare da tasiri ba;
(5) Za a iya sanya sassan rufewa mai siffar zobe ta atomatik a matsayi na iyaka;
⑥ Matsakaicin aiki a bangarorin biyu na hatimin abin dogara;
⑦ Lokacin da aka buɗe cikakke kuma an rufe shi gabaɗaya, an keɓe filin rufewa na ƙwallon da wurin zama daga matsakaici, don haka matsakaici ta hanyar bawul a babban saurin ba zai haifar da lalatawar farfajiyar rufewa ba;
⑧ m tsarin, haske nauyi, shi za a iya la'akari da m bawul tsarin ga low zazzabi matsakaici tsarin;
⑨ Symmetrical bawul jiki, musamman welded bawul tsarin jiki, na iya ɗaukar danniya daga bututun da kyau;
⑩ Rufe sassa na iya jure babban matsa lamba lokacin rufewa.(11) Ball bawul waldi jiki, za a iya kai tsaye binne a cikin ƙasa, sabõda haka, ciki sassa na bawul ba ya lalace, high sabis rayuwa har zuwa shekaru 30, shi ne manufa bawul ga man fetur da kuma iskar gas bututun.
Rashin hasara:
(1) Saboda babban bawul wurin zama sealing zobe abu ne ptfe, shi ne inert zuwa kusan duk sunadarai, kuma yana da m halaye na kananan gogayya coefficient, barga yi, ba sauki ga tsufa, fadi da kewayon zafin jiki da kyau kwarai sealing yi.Amma halaye na zahiri na PTFE, gami da haɓakar haɓakar haɓakawa mai girma, haɓakar yanayin sanyi da ƙarancin ƙarancin zafi, suna buƙatar ƙirar hatimin wurin zama a kusa da waɗannan halayen.A sakamakon haka, lokacin da abin rufewa ya taurare, amincin hatimin ya lalace.Haka kuma, da zafin jiki juriya na PTFE ne low kuma za a iya amfani da kawai a karkashin yanayin kasa da 180 ℃.Sama da wannan zafin jiki, abin rufewa zai tsufa.A cikin yanayin amfani na dogon lokaci, yawanci ba a amfani da shi a 120 ℃.
② Ayyukan sarrafa shi ya fi muni fiye da bawul ɗin duniya, musamman bawul ɗin pneumatic (ko bawul ɗin lantarki).

Nortech yana ɗaya daga cikin manyan masana'antun bawul ɗin masana'antu a China tare da ingantaccen takaddun shaida ISO9001.

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