Butterfly valve, iyo inozivikanwawo sevhavha yevhavha, ivharuvhu inogadzirisa ine chimiro chakareruka, inogona kushandiswa pa-off control yepakati mune yakaderera-kudzvanywa pombi.Butterfly valve ivharuvhu inovhara (valve disc or butterfly plate) idhisiki uye inotenderera vharafu kuti ivhure nekuvharika.
Iyo valve inogona kushandiswa kudzora kuyerera kwemhando dzakasiyana dzemvura dzakadai semhepo, mvura, chiutsi, akasiyana siyana anoodza media, madhaka, zvigadzirwa zvemafuta, simbi yemvura uye radioactive media.Inonyanya kushandiswa kucheka uye kupuruzira pombi.Iyo yekuvhura uye yekuvhara chikamu chevhavhavhavhavhavhavhavhavhavhavhavhavhavhavhaidhidhidhidhidhidhidhi,inotenderera ichitenderedza axis yayo mumutumbi wevharuvhu, kuitira kuti iwane chinangwa chekuvhura, kuvhara kana kugadzirisa.
Muma1930, United States yakagadzirabutterfly valve, iyo yakaunzwa muJapan muma1950 uye yakanga isinganyanyi kushandiswa muJapan kutozosvikira kuma1960.Yakasimudzirwa muChina mushure memakore ekuma1970.
Iwo makuru maficha evhavhavhavhavha ndeaya: diki yekushandisa torque, diki yekuisa nzvimbo uye huremu huremu.Kutora DN1000 semuenzaniso, iyo butterfly valve inenge matani maviri, nepo gedhi regedhi rinenge 3.5 tani, uye butterfly valve iri nyore kusanganiswa nemhando dzakasiyana dzekutyaira, nekugara kwakanaka uye kuvimbika.The disvantage yerabha rakanamwa butterfly vharafundeyokuti kana ichishandiswa kubvongodza, cavitation ichaitika nekuda kwekushandiswa kusina kunaka, zvichiita kuti peeling uye kukuvara kwechigaro cherubha.Naizvozvo, nzira yekuisarudza nemazvo inofanira kubva pane zvinodiwa nemamiriro ekushanda.
Hukama huri pakati pekuvhurwa kwevharuvhu yeshavishavi uye kuyerera kunochinja zvakanyanya mumutsara chiyero.Kana iyo yakashandiswa kudzora kuyerera, maitiro ayo ekuyerera anoenderanawo zvakanyanya nekuyerera kwekupokana kwepombi.Semuenzaniso, dhayamita uye chimiro chevhavha akaiswa mumapaipi maviri akafanana, uye kuyerera kwevhavha kuchave kwakasiyana kwazvo kana pombi yekurasikirwa kwepombi yakasiyana.Kana vharuvhu iri mumamiriro ekukura kukuru, cavitation iri nyore kuitika kuseri kweplate yevhavha, iyo inogona kukuvadza valve.Kazhinji, inoshandiswa kunze kwe15 °.Apo iyobutterfly valveiri pakati pekuvhura, chimiro chekuvhura chinoumbwa nemuviri wevharuvhu uye kumucheto kwemberi kweshavishavi ndiro yakatarisana nevharuvhu shaft, uye nyika dzakasiyana dzinoumbwa pamativi ese.Kunoperera ndiro yeshavishavi kune rimwe divi rinofamba richitevedza gwara rekuyerera uye rimwe divi richipesana nekwarinoyerera.Naizvozvo, muviri wevharuvhu neplate yevharuvhu kune rimwe divi zvinogadzira muromo senge kuvhurika, uye rimwe divi rakafanana negomba rekuvhurika sekuvhurwa.Kuyerera kweyero padivi renozzle inokurumidza kupfuura iyo padivi re throttle, Negative pressure inogadzirwa pasi pe throttle side valve, uye chisimbiso cherabha chinowanzodonha.
Iyo torque yekushandisa yevharuvhu ine hunhu hwakasiyana nekuda kwekusiyana kwekuvhura uye vharafu yekuvhura nekuvhara nzira.Iyo torque inogadzirwa neyakachinjika butterfly vharafu, kunyanya yakakura-dhayamita vharafu, nekuda kwekudzika kwemvura uye musiyano pakati pepamusoro nepasi misoro yevharuvhu shaft haigone kufuratirwa.Uye zvakare, kana gokora rakaiswa padivi rekupinza revhavha, kuyerera kwebias kunoumbwa, uye torque inowedzera.Kana vharuvhu iri pakati pekuvhura, iyo inoshanda nzira inoda kuzvivharira nekuda kwekuita kwekuyerera kwemvura ine simba nguva.
Indasitiri yemavharuvhu inoita basa rakakosha mukusimudzira hupfumi hwenyika sechinhu chakakosha cheindasitiri yekugadzira michina.Kune akawanda mavharuvhu indasitiri cheni muChina.Kazhinji, China yakapinda muzvikamu zvepasi rose mavharuvhu nyika.