Indlela yokuqinisa i-shaft?

Umsebenzi oyinhloko wanoma iyiphi i-sealant ukuvimbela ukuvuza kwalolu ketshezi endaweni ethile evalekile. Kungokufanayo nangezimpawu ze-shaft, ezibamba uwoyela kuzo zombili izigxobo ezimile nezijikelezayo. Ukuze enze indima yawo kahle, kufanele aklanywe kahle futhi afakwe izinto zokuvala ezimelana nokugqoka kanye nokuguquguquka kwezinga lokushisa. Laba bamuva - okufanele bazi - banomunye umsebenzi obalulekile. Lokhu ukuvikelwa kwamafutha ngokwawo ekungeneni kokungcola kwangaphandle nomswakama.

Zakhiwe kanjani?

Esinye sezici ezibaluleke kakhulu ze-boil shaft seal eyaziwa kakhulu iyindandatho yensimbi. Kuyisakhiwo esikhethekile sokusekela sezinto ezifanele zokuvala uphawu. Ukwengeza, indima ebalulekile idlalwe yintwasahlobo, ecindezela udebe lokuvala ngokumelene ne-shaft ngamandla afanelekile. Lokhu kubaluleke kakhulu lapho i-shaft ijikeleza, njengoba yilapho ingozi enkulu yokuvuza okungalawuleki kawoyela kwenzeka. Lesi sakamuva asiphumi ngenxa yokuma okufanelekile komlomo wokuvala, kanye nangenxa yokusetshenziswa kwalokho okubizwa ngokuthi. umphumela we-meniscus oshukumisayo.

I-NBR futhi mhlawumbe i-PTFE?

Izigxivizo ze-Shaft zisebenzisa izinto ezihlukene zokuvala, kuye ngokuthi isib. indawo ye-sealant, izimo zokusebenza (kuhlanganise nomfutho kawoyela osebenza ku-sealant), kanye nezinga lokushisa lokusebenza. Ngalesi sizathu, ama-shaft seal afakwe uketshezi aqukethe izinhlobo ezahlukene zezinto zokuvala, kusukela ku-nitrile rubber (NBR) kuya ku-polytetrafluoroethylene (PTFE). Inzuzo engangabazeki yangaphambili iwukumelana nokugqoka okuphezulu kakhulu ngokubekezelela okuhle kokuguquguquka kwezinga lokushisa ebangeni ukusuka ku--40 kuya ku-+100 degrees C. Kanti, ama-polytetrafluoroethylene sealants angasetshenziswa ezimweni ezingezinhle kakhulu zokushisa, tk. -80 kuya ku-200 degrees C. Baphinde babonise ukumelana nowoyela okuphezulu kakhulu, futhi ngesikhathi esifanayo ukuthambekela okuphezulu kokugqoka uma kuqhathaniswa nezimpawu ezisekelwe ku-nitrile rubber. Ububanzi bezimpawu zokubilisa buhlanganisa nezinye izinguquko zenjoloba: i-polyacrylic ne-fluorine. Endabeni yabo, inzuzo ukumelana okuphezulu emazingeni okushisa aphezulu, ngokubekezelelana okulinganiselwe emazingeni okushisa aphansi (ebangeni ukusuka -25 kuya ku-30 ​​degrees C). Izigxivizo ze-FKM nazo zimelana kakhulu nowoyela.

Isizukulwane sokuqala noma sesibili?

Izigxivizo ze-Shaft zibonakala ngalokho okubizwa ngokuthi i-directality. Imayelana nani? Uma i-shaft izungeza ngokwewashi, khona-ke lolu uphawu olungakwesokudla. Uma kungenjalo, izigxivizo zesandla sokunxele ziyafakwa. Njengamanje kunezizukulwane ezimbili zama-fluid seal kuma-shaft seal. Zikhethwe ngokucophelela kucatshangelwa, ikakhulukazi, ukwakheka, imodeli kanye nonyaka wemoto, kanye nemingcele ye-sealant ngokwayo, njengokuqina nobubanzi: ngaphakathi nangaphandle. Endabeni yama-sealant esizukulwane sokuqala, izindebe zokuvala izindebe ezinamanotshi ezi-3 noma ezi-4 zisetshenziswa. Ububi bazo, isizukulwane esilandelayo esingasenabo, wudebe oluvala uphawu lwe-convex. Lokhu kuphazamiseka kubonakala ikakhulukazi lapho kuhlanganiswa uphawu, lapho ukunakekelwa okukhethekile kufanele kuthathwe ukuze umkhawulo walo ungagobi. Le nkinga ayisekho ngezigxivizo zesizukulwane sesibili. Udebe oluvalayo lapha luyisicaba futhi ukuhlanganisa kulula kakhulu: vele uslayida uphawu ku-shaft, awekho amathuluzi akhethekile adingekayo. Ngaphezu kwalokho, umkhawulo wayo unamazinyo angu-5 noma angu-6. Kodwa-ke, ungakhohlwa ukubeka kahle i-sealant kusokhethi. Umqondo uwukuqeda ukunyakaza kwawo kanye nalokho okubizwa ngokuthi i-axial spring.