Ungayikhetha njani into yokutywina kwiivali zebhabhathane

Ukukhetha izinto zokutywinaI-Butterfly Valvesifuna ukuqwalaselwa ngokubanzi kwezinto ezininzi. Kuphela kukukhetha izixhobo ezichanekileyo zinokuphuthiswa kwebhabhathane ziqinisekisa ukutywina okuhle phantsi kweemeko ezahlukeneyo zomsebenzi kwaye ziqinisekisa ukusebenza okuqhelekileyo kwenkqubo. Oku kulandelayo yeyona nto iphambili kunye neempawu eziqhelekileyo zezinto eziqhelekileyo ekufuneka ziqwalaselwe xa ukhetha:

Ingqalelo

1. Iipropathi eziphakathi: ngokwemicimbi yeepropathi zekhemikhali, izixhobo zokunganyangeki okuqinileyo, ezinjengePolytetrafluookeOothluothluothluothluets (PTFE), kufuneka zikhethwe kwiindawo ezine-acidic kunye ne-alkaline; Ngokuphathelele kwiipropathi zomzimba, imithombo yeendlela ezinamafutha aphezulu inokukhawulezisa ukwaluphala kunye nokusetyenziswa, kunye neemeko zoxinzelelo oluphezulu kufuna amandla aphezulu kwizinto eziphezulu kunye namandla ecinezelayo. Imithombo yeendaba nge-surigucle inyanzelisa imfuno yezixhobo ezichasene nokunxiba.

2. Iqondo lobushushu lokusebenza kunye noxinzelelo: Izinto ezahlukeneyo zokutywina zinoluhlu olubanzi lwamaqondo obushushu afanelekileyo. Izixhobo zokutywina zerabha zihlala zisetyenziswa phakathi kwe--30 ℃ kunye ne-120 ℃, ngelixa iiplasitiki zobunjineli okhethekileyo zinokumelana nobushushu obuphakathi. Phantsi kweemeko zoxinzelelo oluphezulu, izixhobo kufuneka zibe namandla awoneleyo kunye ne-elasticity, ezinjengezinto zokutywina zensimbi kwimibhobho yegesi ephezulu, efanelekileyo.

I-3. Ukuvula i-veli kunye nokuvala rhoqo: xaIbhotile yebhabhathaneIvula kwaye ivaliwe rhoqo, izinto ezibonakalayo kufuneka zinxibe-ukunganyangeki kwaye kuyadinwa. Irabha ye-nitrile (i-nbr) inesigqibo esihle kwaye ilungele ezi zihlandlo.

4. Ixabiso lexabiso: Khetha izixhobo zexabiso eliphantsi ukunciphisa iindleko ngelixa ihlangabezana neemfuno zomsebenzi. Izinto zokutywina zerabha eziqhelekileyo zinamaxabiso aphantsi, ngelixa iplasitiki yentsebenzo ephezulu yobunjineli okanye izixhobo zokutywinwa kwentsimbi zinamaxabiso aphezulu.

Iimpawu eziqhelekileyo zezinto eziqhelekileyo

I-1. Irabha: I-Nitrile Butber irabha (i-hibber ye-ozo ixhaphakile, inxibe i-ozone ixhaphakileyo, kwaye ilungele imeko ye-ozone, kwaye ifanelekile kwi-ozonegemes yendawo ene-ozo yeoyile ye--30 ℃ -120 ℃ kunye nengcinezelo engadlulanga i-1.6MPA; I-FluoRGBBER (i-FKM) ichasa amaqondo obushushu aphezulu, ioyile, kunye nokuntywilisa iikhemikhali, kodwa kuyabiza kwaye inamandla amakhulu. IlungeleI-Butterfly ValvesKwishishini leekhemikhali kunye namayeza anoxinzelelo oluphezulu asusela--20 ℃ ukuya kwi-200 ℃; Irabha ye-Ethylene Proplene (i-EPDM) iyanyangeka amanzi, i-ozone enganyangekiyo, ixhaphakile, kwaye ixhathise i-ioyile engeyiyo. Ilungele amanzi kunye ne-Steam Steam Remaeding ukusuka -50 ℃ ukuya kwi-150 ℃.

2. IPlastics: I-Polytetrafluoroothyyyyyyyyyyeyyen (PTFE) inozinzo ezigqwesileyo zekhemikhali, ukumelana nobushushu obuphezulu, kunye nokuqina okuphantsi kunye namandla ahluphekayo. Ilungele indawo eqinileyo yeindaba eqinileyo esusela kwi-180 ℃ ukuya kwi-250 ℃; I-Polyamide (PA) inamandla aphezulu, ubukhali, ukunxiba ukuxhathisa, kunye nokuchasana kweoyile elungileyo, kodwa inozinzo oluphezulu lwamanzi kunye nokuzinza okungekho mgangathweni kunye nokuzinza okungekho mgangathweni kunye nokuzinza komgangatho ongalunganga. Ifanelekile i-oyile ephakathi nenqanaba eliphantsi elinemimandla yemithombo yeendaba isusela--40 ℃ ukuya kwi-100 ℃.

3. Izinyithi: Intsimbi engenasimo inamandla aphezulu, ukumelana nobushushu obuphezulu, ukunyangwa kobushushu obuphezulu, ubomi obungaphezulu, kodwa indleko eziphezulu, kodwa uxinzelelo oluphezulu, kunye neendawo eziphakamileyo zemithombo yeendaba; Ubhedu Alloy unengxaki yokuqhutywa kwe-durmal elungileyo, kunye nokunganyangeki, kwaye kulula ukusebenza. Nangona kunjalo, inamandla aphantsi kwaye ixhonywe kwi-oxidation kwiqondo lobushushu eliphezulu. Ilungele imeko yebhabhathane ye-valve yokutywina ngobushushu obuphantsi kunye neemfuno zoxinzelelo kunye nokuqhutywa.