I-valve yebhabhathane ethambile kanye ne-hard seal

1. Uyini umehluko oyisisekelo phakathiivalvu yebhabhathane yophawu oluthambilekanye nevalvu yebhabhathane eqinile?

Izinto zokubopha indandatho zihlukile. Ipheya lokubopha levalvu yebhabhathane elivala kancane “liyisihlalo sensimbi + indandatho yokubopha engeyona eyensimbi”, futhi izinto ezisetshenziswa kakhulu zifaka irabha (EPDM/NBR), i-polytetrafluoroethylene (PTFE), njll., njengoba kuboniswe kuMfanekiso 01; ipheya lokubopha levalvu yebhabhathane elivala kanzima “liyinsimbi kuya kwensimbi”, kanti isihlalo sevalvu kanye nobuso bokubopha ngokuvamile kwenziwa ngensimbi engagqwali, insimbi ye-alloy noma i-carbide surfacing. Eyokuqala ifinyelela ukuvalwa ngokuguquguquka kwe-elastic kwezinto, kuyilapho eyesibili ithembele ekusetshenzisweni okunembile kanye nokucindezela okuphakathi ukuze kufezwe ukuvalwa.

Umfanekiso 01	Umfanekiso 02

2. Yiliphi izinga lokushisa elifanele lalo ngalinye?

Izivalo ezithambile zikhawulelwe ezintweni ezingezona ezensimbi: Irabha ye-EPDM ifanelekela u--40℃ ~ 120℃, kanti i-PTFE ingafinyelela ku--40℃ ~ 200℃. Akukho mkhawulo onjalo wezivalo eziqinile. Amavalvu ebhabhathane ensimbi engagqwali avamile afanelekela u--40℃ ~ 425℃, futhi izinto ezikhethekile ze-alloy zingamelana ngisho namazinga okushisa aphezulu angaphezu kuka-600℃.

3. Yikuphi ukusebenza kokuvala okungcono?

I-seal ethambile ingcono futhi ingafinyelela ukuvuza okungekho (i-ANSI Class VI). Ukuqina kwerabha/i-PTFE kungagcwalisa ukungalingani okuncane kakhulu ebusweni bensimbi futhi kufinyelele ukuvalwa kwezinga lamabhamuza. Ngenxa yokuxhumana okuqinile kwensimbi, izidingo ezijwayelekile ze-seal eziqinile ngokuvamile ziyi-ANSI Class IV~V (ukuvuza okuncane kuvunyelwe), okufanelekela imidiya yenqubo enokubekezelela okuthile ukuvuza.

4. Uyini umehluko phakathi kwesikhathi senkonzo kanye nezindleko zokulungisa?

Izivalo eziqinile zihlala isikhathi eside. Indandatho yerabha/ye-PTFE evala kalula ivame ukuguga nokuguga ngenxa yokuguguleka kwesikhathi eside kanye nokushintshashintsha njalo. Indandatho yokuvala ngokuvamile idinga ukushintshwa njalo eminyakeni emi-2 kuya kwemi-5. Ngemva kokuba ubuso bensimbi yokuvala eqinile bufakwe i-carbide nge-spray, ayigugi futhi ayigugi, futhi inempilo yesevisi engaphezu kweminyaka eyi-10. Ifanele ukulungiswa njalo kwezimo zokusebenza. Nakuba izindleko zokuqala ziphezulu, izindleko zokulungisa zesikhathi eside ziphansi.

5. Ukuzivumelanisa nezimo kwabezindaba kuhluke kanjani?

I-seal ethambile ayimelani ne-media enamandla yokugqwala/equkethe izinhlayiya. Nakuba irabha ne-PTFE zinokuzinza okuhle kwamakhemikhali, uma i-medium iqukethe izinhlayiya eziqinile (njenge-slurry, i-coal powder), izinhlayiya zingaklwebha kalula indawo ethambile yokuvala lapho i-valve ivulwa futhi ivalwa, okubangela ukuvuza. Izinhlayiya eziqinile zifanelekela izimo zokusebenza ezinzima njenge-steam eshisa kakhulu, imikhiqizo kawoyela, izinhlayiya eziqukethe izinhlayiya, kanye namagesi anomfutho ophezulu.

6. Isiphetho

Umehluko oyinhloko phakathi kwe-soft seal kanye ne-hard seal ye-ivalvu yebhabhathaneitholakala ezintweni zokuvala: uphawu oluthambile (irabha/i-PTFE) lunokunwebeka okuhle, lungaphumeleli ukuvuza, futhi lufanelekela imidiya ehlanzekile ekushiseni kwegumbi; uphawu oluqinile (oluvela kwensimbi kuya kwensimbi) lumelana nokushisa okuphezulu futhi alugugi, futhi lufanelekela izimo zokusebenza ezinzima njengomusi nezinhlayiya. Zombili zinezinzuzo zazo, futhi ukukhetha kudinga ukususelwa ezimweni zokusebenza.I-Tianjin Tanggu Water-Seal Valve Co., Ltdigxile ekukhiqizweni kweamavalvu ebhabhathane, amavalvu esango, ama-valve okuhlolanezinye izinhlobo zamavalvu. Siyakwamukela ukusishayela ucingo futhi sizokunikeza iziphakamiso zokukhetha zobungcweti!