Mechanical hatimi kuma aka sani da ƙarshen fuska hatimi, wanda yana da biyu na karshen fuskoki perpendicular zuwa axis na juyawa, karshen fuskar a karkashin mataki na ruwa matsa lamba da diyya inji waje karfi, dangane da daidaitawa na karin hatimi da kuma sauran ƙarshen don kiyaye dacewa, da zamewar dangi, don hana zubar ruwa. Credo Pump yana taƙaita abubuwan da ke haifar da hatimin injin famfo ruwa:

Lamarin yabo gama gari

Matsakaicin yayyan hatimin inji ya kai sama da kashi 50% na duk famfunan kulawa. Ingancin aikin hatimin injiniya kai tsaye yana shafar aikin yau da kullun na famfo. An taƙaita shi kuma an yi nazari kamar haka:

1. Yabo na lokaci-lokaci

Pump rotor shaft tashar motsi, hatimin taimako da babban tsangwama na shaft, zoben motsi ba zai iya motsawa cikin sassauƙa a kan shaft ba, lokacin da aka juyar da famfo, ƙarar zobe mai ƙarfi da a tsaye, babu ramuwa.

Ma'auni: A cikin haɗuwa da hatimin inji, ƙarfin shaft ɗin ya kamata ya zama ƙasa da 0.1mm, kuma tsangwama tsakanin hatimin taimako da ramin ya zama matsakaici. Yayin da ake tabbatar da hatimin radial, za a iya motsa zoben da ake iya motsi a hankali a kan shaft bayan taro (za a iya dawo da zoben da za a iya motsawa cikin yardar kaina zuwa bazara).

2. Rashin isassun man mai a saman rufewa zai haifar da bushewar gogayya ko zana fuskar ƙarshen hatimi.

Ma'auni: Tsawon saman man mai a cikin ɗakin mai yakamata ya kasance sama da saman rufewar zoben motsi da a tsaye.

3. Jijjiga na lokaci-lokaci na rotor. Dalilin shi ne cewa stator da babba da ƙananan murfin murfin ba su daidaita impeller da spindle, cavitation ko lalacewa (sawa), wannan halin da ake ciki zai gajarta da sealing rayuwa da yayyo.

Ma'auni: Ana iya gyara matsalolin da ke sama bisa ga ka'idodin kulawa.

Leakage saboda matsa lamba

1. Mechanical hatimi yayyo lalacewa ta hanyar high matsa lamba da kuma matsa lamba kalaman saboda da wuce kima spring takamaiman matsa lamba da kuma jimlar musamman matsa lamba zane da kuma matsa lamba a cikin sealing jam'iyya wuce 3MPa, zai sa takamaiman matsa lamba a kan sealing karshen fuska da girma, yin shi da wuya. don fim ɗin ruwa don ƙirƙirar, lalacewa mai tsanani a kan ƙarshen rufewa, ƙara ƙimar calorific kuma yana haifar da nakasar thermal na farfajiyar rufewa.

Ma'auni: a cikin hatimin na'ura mai haɗawa, dole ne a aiwatar da matsawa na bazara daidai da tanadi, kada ku ƙyale babba ko ƙananan abin mamaki, yanayin matsa lamba a ƙarƙashin hatimin inji ya kamata a dauki matakan. Domin ya sa karshen fuska karfi m, har zuwa yiwu don rage nakasawa, iya amfani da wuya gami, tukwane da sauran kayan da high matsa lamba ƙarfi, da kuma karfafa sanyaya lubrication matakan, zabi watsa yanayin, kamar key, fil, da dai sauransu.

2. injin famfo inji hatimi yayyo lalacewa ta hanyar aiki a kan aiwatar da farawa, tsayawa, saboda famfo mashiga blockage, yin famfo matsakaici dauke da gas, shi ne wata ila ya sa wani korau matsa lamba hatimi rami, hatimi rami idan korau matsa lamba, da bushe gogayya. yana haifar da hatimi, ginanniyar hatimin injin injin da aka gina a ciki zai samar da (ruwa) na ɗigogi, hatimin injin ruwa da kuma bambancin ingantacciyar hatimin hatimin jagorar abu, kuma daidaitawar hatimin injin yana da takamaiman jagora.

Ma'auni: ɗauki hatimin hatimin fuska biyu na ƙarshe, yana da taimako don haɓaka yanayin lubrication da aikin hatimi.

Leakage ya haifar da matsakaici

1. Mafi yawan submersible famfo inji hatimi dismantling, a tsaye zobe da kuma motsi zobe karin likes ne inelastic, wasu sun rube, sakamakon da yawa yayyo na inji hatimi har ma nika shaft sabon abu. Saboda babban zafin jiki, raunin acid a cikin najasa, rauni mai tushe akan zobe na tsaye da motsin zobe na ƙarin rubber hatimin lalata, wanda ke haifar da ɗigon injin ya yi girma, ƙarfi da tsayin daka na roba hatimin abu don nitrile - 40, babban zafin jiki mai jurewa, acid - alkali resistant, lokacin da najasa ne acidic da alkaline sauki lalata.

Ma'auni: zuwa kafofin watsa labaru masu lalata, sassan roba ya kamata su kasance masu jure zafin jiki, raunin acid, raunin alkali fluororubber.

2. Mechanical hatimi yayyo lalacewa ta hanyar m barbashi impurities. Idan m barbashi a cikin hatimi fuskar, za a yanke ko bugun da hatimi na lalacewa da tsagewa, sikelin da kuma tara mai a saman shaft (sa), a cikin sauri kudi fiye da lalacewa kudi na gogayya biyu, zobe iya. 't rama gudun hijira na abrasion, wuya zuwa wuya gogayya biyu aiki fiye da wuya zuwa graphite gogayya biyu, saboda m barbashi an saka graphite sealing zobe sealing surface.

Ma'auni: Hatimin inji na tungsten carbide friction biyu yakamata a zaɓi a cikin wurin da ƙaƙƙarfan barbashi suke da sauƙin shigarwa.

Saboda wasu matsalolin da ke haifar da zubewar hatimin inji har yanzu suna nan a cikin ƙira, zaɓi, shigarwa da sauran wurare marasa ma'ana.

1. Dole ne a aiwatar da matsawa na bazara daidai da ka'idoji, kuma ba a yarda ya zama babba ko ƙananan ba. Kuskuren shine ± 2mm.

2. Ƙarshen fuskar shaft (ko hannun hannu) shigar da zoben hatimi mai motsi da ƙarshen fuskar hatimin hatimi (ko harsashi) shigar da zoben hatimin hatimi a tsaye ya kamata a goge shi da goge don guje wa lalata zoben hatimin hatimin a tsaye yayin taro.