Iivalvu yebhabhathane yeplastikiiqhagamshelwe kwinkqubo yemibhobho ngezi ndlela zilandelayo:

Uqhagamshelo lwe-butt welding: Ububanzi bangaphandle benxalenye yoqhagamshelo lwe-valve bulingana nobubanzi bangaphandle bepayipi, kwaye ubuso besiphelo senxalenye yoqhagamshelo lwe-valve buchasene nobuso besiphelo sepayipi yoqhagamshelo;

Uqhagamshelo lwe-socket bonding: inxalenye yoqhagamshelo lwe-valve ikwimo ye-socket, ebotshelelwe kumbhobho;

Uqhagamshelo lwesokethi ye-Electrofusion: inxalenye yoqhagamshelo lwevalvu luhlobo lwesokethi enocingo lokufudumeza lombane olubekwe kububanzi bangaphakathi, kwaye luqhagamshelo lwe-electrofusion nombhobho;

Uqhagamshelo lwe-socket hot-melt: inxalenye yoqhagamshelo lwe-valve ikwimo ye-socket, kwaye iqhagamshelwe kumbhobho nge-socket e-hot-melt;

Uqhagamshelo lwe-socket bonding: Inxalenye yoqhagamshelo lwe-valve ikwimo ye-socket, ebotshelelwe kwaye ifakelwe nge-socket nombhobho;

Uqhagamshelo lweringi yokutywina irabha yesokhethi: Inxalenye yoqhagamshelo lwevalvu luhlobo lweringi yokutywina irabha ngaphakathi, efakwe isokhethi kwaye iqhagamshelwe nombhobho;

Uqhagamshelo lweFlange: Inxalenye yoqhagamshelo lwevalvu ikwimo yeflange, eqhagamshelwe neflange ekwipayipi;

Uqhagamshelo lwemisonto: Inxalenye yoqhagamshelo lwevalvu ikwimo yomsonto, oqhagamshelwe nomsonto okwipayipi okanye kwipayipi;

Uqhagamshelo oluphilayo: Icandelo loqhagamshelo lwevalvu luqhagamshelo oluphilayo, oluqhagamshelweimibhobho okanye izixhobo.

Ivalvu ingaba neendlela ezahlukeneyo zoqhagamshelo ngaxeshanye.

umgaqo wokusebenza:

Ubudlelwane phakathi kokuvulwa kwevalvu yebhabhathane yeplastiki kunye nesantya sokuhamba kwamanzi ngokusisiseko siyatshintsha ngokuthe ngqo. Ukuba isetyenziselwa ukulawula ukuhamba kwamanzi, iimpawu zayo zokuhamba kwamanzi nazo zinxulumene kakhulu nokumelana nokuhamba kwamanzi emibhobhoni. Umzekelo, imibhobho emibini ifakwe ngobubanzi bevalvu obufanayo kunye nefom, kodwa i-coefficient yokulahleka kwepayipi yahlukile, kwaye isantya sokuhamba kwamanzi sevalvu naso siya kwahluka kakhulu.

Ukuba ivalvu ikwimeko apho i-throttle range inkulu khona, umva wepleyiti yevalvu unokuba ne-cavitation, nto leyo enokonakalisa ivalvu. Ngokubanzi, isetyenziswa ngaphandle kwe-15°.

Xa ivalvu yeplastiki yebhabhathane ikwindawo ephakathi, imilo yomnyango owenziwe ngumzimba wevalvu kunye nesiphelo esingaphambili seplate yebhabhathane iphakathi kwi-shaft yevalvu, kwaye amacala omabini enziwa ukuze kugqitywe iimeko ezahlukeneyo. Isiphelo esingaphambili seplate yebhabhathane kwelinye icala sihamba kwicala lokuhamba kwamanzi, kwaye elinye icala lichasene necala lokuhamba kwamanzi. Ke ngoko, elinye icala lomzimba wevalvu kunye neplate yevalvu zenza ukuvulwa okufana nomlomo, kwaye elinye icala lifana nokuvulwa kwe-throttle. Icala le-nozzle linesantya sokuhamba esikhawulezayo kakhulu kunecala le-throttle, kwaye uxinzelelo olubi luya kuveliswa phantsi kwevalvu esecaleni le-throttle. Izitywino zerabha zihlala ziwa.

Iivalvu zeplastiki zebhabhathane kunye neentonga zebhabhathane azikwazi ukuzitshixa. Ukuze ipleyiti yebhabhathane ibekwe kwindawo yayo, kufuneka kufakwe isixhobo sokunciphisa iinzwane kwintonga yevalvu. Ukusetyenziswa kwesixhobo sokunciphisa iinzwane akunakwenza nje kuphela ukuba ipleyiti yebhabhathane izitshixe kwaye kumise ipleyiti yebhabhathane kuyo nayiphi na indawo, kodwa kukwaphucula nokusebenza kwevalvu.

I-torque yokusebenza yevalvu yebhabhathane yeplastiki inexabiso elahlukileyo ngenxa yeendlela ezahlukeneyo zokuvula nokuvala kwevalvu. Ivalvu yebhabhathane ethe tye, ingakumbi ivalvu enobubanzi obukhulu, ngenxa yobunzulu bamanzi, i-torque eveliswa ngumahluko phakathi kweentloko zamanzi eziphezulu nezisezantsi zeshaft yevalvu ayinakutyeshelwa. Ukongeza, xa ingqiniba ifakiwe kwicala lokungena kwevalvu, kwakheka ukuhamba kwe-bias, kwaye i-torque iya kwanda. Xa ivalvu ikwindawo ephakathi yokuvula, indlela yokusebenza kufuneka izivale ngokwayo ngenxa yesenzo se-torque yokuhamba kwamanzi.

Ivalvu yebhabhathane yeplastiki inesakhiwo esilula, esinamacandelo ambalwa kuphela, kwaye igcina ukusetyenziswa kwezinto; ubungakanani obuncinci, ubunzima obulula, ubungakanani obuncinci bokufakelwa, i-torque encinci yokuqhuba, ukusebenza okulula nokukhawulezayo, kufuneka ijikeleze kuphela i-90° ukuze ivuleke kwaye ivale ngokukhawuleza; kwaye Kwangaxeshanye, inomsebenzi olungileyo wokulungisa ukuhamba kunye neempawu zokuvala kunye nokutywina. Kwintsimi yokusetyenziswa kwe-caliber enkulu nephakathi, uxinzelelo oluphakathi noluphantsi, ivalvu yebhabhathane yindlela yevalvu ebalaseleyo. Xa ivalvu yebhabhathane ikwindawo evulekileyo ngokupheleleyo, ubukhulu bepleyiti yebhabhathane yeyona ndlela yokumelana xa i-medium idlula emzimbeni wevalvu, ngoko ke ukuhla koxinzelelo okuveliswa yivalvu kuncinci, ngoko ke ineempawu zokulawula ukuhamba okungcono. Ivalvu yebhabhathane ineentlobo ezimbini zokutywina: i-elastic seal kunye ne-metal seal. Ivalvu yokutywina elastiki, iringi yokutywina inokufakwa emzimbeni wevalvu okanye incamathiselwe kumda weplate yebhabhathane. Iivalvu ezinezitywina zesinyithi zihlala ixesha elide kuneevalvu ezinezitywina ze-elastic, kodwa kunzima ukufumana isitywina esipheleleyo. Isitywina sesinyithi sinokuzivumelanisa nobushushu obuphezulu bokusebenza, ngelixa isitywina se-elastic sinesiphako sokuthintelwa bubushushu. Ukuba kufuneka ivalvu yebhabhathane isetyenziswe njengolawulo lokuhamba kwamanzi, into ephambili kukukhetha ngokuchanekileyo ubungakanani kunye nohlobo lwevalvu. Umgaqo wolwakhiwo lwevalvu yebhabhathane ufanelekile ngokukodwa ekwenzeni iivalvu ezinkulu. Iivalvu zebhabhathane azisetyenziswa kakhulu kuphela kumashishini aqhelekileyo afana nepetroleum, igesi, iikhemikhali, kunye nonyango lwamanzi, kodwa zikwasetyenziswa kwiinkqubo zamanzi okupholisa kwizikhululo zamandla obushushu. Iivalvu zebhabhathane ezisetyenziswa rhoqo ziquka iivalvu zebhabhathane zohlobo lwe-wafer kunye neevalvu zebhabhathane zohlobo lwe-flange. Iivalvu zebhabhathane ze-wafer ziqhagamshelwe phakathi kweeflange ezimbini zepayipi ezinee-stud bolts. Iivalvu zebhabhathane ezinee-flanges zixhotyiswe ngee-flanges kwivalvu. Iiflanges kuzo zombini iziphelo zevalvu ziqhagamshelwe kwiiflanges zepayipi ezinee-bolts. Ukusebenza kwamandla kwevalvu kubhekisa kubuchule bevalvu bokumelana noxinzelelo lwe-medium. Ivalvu yimveliso yoomatshini ethwala uxinzelelo lwangaphakathi, ngoko ke kufuneka ibe namandla aneleyo kunye nokuqina ukuqinisekisa ukusetyenziswa ixesha elide ngaphandle kokuqhekeka okanye ukuguquka.

Ngokusebenzisa irabha yokwenziwa elwa nokugqwala kunye ne-polytetrafluoroethylene, ukusebenza kweevalvu zebhabhathane kunokuphuculwa kwaye kuhlangatyezwane neemeko zokusebenza ezahlukeneyo. Kwiminyaka elishumi edlulileyo, iivalvu zebhabhathane ezitywinwa ngentsimbi ziye zaphuhliswa ngokukhawuleza. Ngokusebenzisa ukumelana nobushushu obuphezulu, ukumelana nobushushu obuphantsi, ukumelana nokugqwala okunamandla, ukumelana nokugqwala okunamandla, kunye nezixhobo ze-alloy ezinamandla aphezulu kwiivalvu zebhabhathane, iivalvu zebhabhathane ezitywinwa ngentsimbi ziye zasetyenziswa kubushushu obuphezulu, ubushushu obuphantsi, kunye nokugqwala okunamandla. Isetyenziswe kakhulu phantsi kwezinye iimeko zokusebenza kwaye yathatha indawo yevalvu yehlabathi kancinci,ivalvu yesangokunye nevalvu yebhola.