Inhloso yezimpawu zamafutha ukuhlinzeka ngokuvala phakathi kwe-crankshaft ejikelezayo nangaphandle.Izigxivizo zikawoyela zakudala zihlanganisa indlu yensimbi ephethe udebe oluvalayo oluguquguqukayo futhi ihlinzeka nomsebenzi wokuvala omile.Udebe oluvalayo lwezimpawu zikawoyela ngokuvamile lukhiqizwa ngezinto ze-elastomer, futhi luthintana nobuso bomgodi ojikelezayo.Ngalokhu, udebe lucindezelwa endaweni ye-shaft kusetshenziswa indandatho yasentwasahlobo.Ngenxa yokunyakaza okujikelezayo, kunegebe lokuvala le-approx.1 µm onqenqemeni lwendebe.Amafutha angangena kulesi sikhala, esisebenza ukugcoba udebe oluvala uphawu.
Intuthuko eqhubekayo ekwakhiweni kwenjini iphumela ezidingweni eziphakeme kakhulu zalolu hlobo lwesivalo sikawoyela.Isivinini senjini ephakeme kanye namazinga okushisa kawoyela, izikhawu ezinde phakathi koshintsho lukawoyela kanye nezinto zokugcoba ezinezithasiselo zesimanje ezisabela kabi ngezinto zokuvala zidinga izixazululo ezintsha nezihlala njalo.Impahla yezimpawu zikawoyela zesikhathi esizayo ibizwa nge-POLYTETRAFLUOROETHYLENE noma i-PTFE nje.Le nto yokwenziwa yaziwa kakhulu ngaphansi kwayo igama lokuhweba i-polymer.
Ukungqubuzana okuphansi kanye nokusetshenziswa kwamandla okuncane kuyizinzuzo ezibalulekile ezinikezwa ama-PTFE oil seals.Lezi zimpawu zingasetshenziswa ngaphandle kwezinkinga futhi nokusebenza okomile noma ukugcotshwa okwanele.Izinto ezisetshenziswayo ezishisayo, ezinobubanzi bokusebenza obusuka ku--130°C kuya ku-+200°C, azinakuqhathaniswa.Ngaphezu kwalokho, i-PTFE iboniswa ukumelana namakhemikhali aphezulu kanye netorque ephukile ephansi ngemva kokuma.
Uma ishisiwe, i-PTFE izama ukubuyela esimweni sayo sokuqala.Ngamanye amazwi: Indaba "ikhumbula" isimo sayo sokuqala.Lesi simo saziwa ngokuthi i-plastic memory effect, futhi sivumela ama-seal ukuthi akheke ngaphandle kwesiphethu sokuzenzisa.Ngesikhathi sokukhiqiza, udebe oluvala uphawu lubunjwa njengendandatho eyisicaba, ebunjwa endandeni yokuqinisa.Ngesikhathi sokuhlanganisa ku-shaft, udebe oluvamayo oluyisicaba ekuqaleni luyakhula futhi lugoqe ukuze lufane nobubanzi be-shaft.Lapho nje udebe oluvala uphawu lushisa ngesikhathi sokusebenza kwenjini, izama ukubuyela esimweni sayo sasekuqaleni.
Indlu yangaphandle yenziwe ngensimbi engagqwali.I-O Ring ye-fluoroelastomer iqinisekisa ukuvaleka kahle okumile.Ububanzi bangaphakathi bugxile ngokuphelele nobubanzi obungaphandle.Udebe oluvalekayo lwangempela lwenziwe nge-PTFE ekwazi ukumelana nokuguga futhi enokungqubuzana okuphansi.I-dust seal eyengeziwe (udebe lwerabha noma umucu ozwakalayo) inikeza umgoqo osebenzayo ngokumelene nezinhlayiya ezingcolisayo.
Isikhathi sokuthumela: May-04-2020