Zvimedu zvina Basic Equipment for Electrostatic Spray Systems

Most powder coating electrostatic spray system inoumbwa nezvikamu zvina zvakakosha zvemidziyo - hopper yekudyisa, electrostatic poda yekupfapfaidza pfuti, electrostatic simba sosi, uye hupfu hwekudzoreredza unit. Kukurukurirana kwechidimbu chimwe nechimwe, kupindirana kwayo nezvimwe zvikamu, uye maitiro akasiyana-siyana aripo zvakakosha kuti unzwisise kushanda kwebasa rekuita uku.

Hupfu hunopihwa pfuti yekupfapfaidza kubva kuchikamu chekudyisa hupfu. Kazhinji zvinhu zvehupfu zvakachengetwa muchikamu ichi zvinogona kunge zvakanyungudika kana kuti simba rinokwevera pasi kune pombi mudziyo kuti utakurwe kuenda kupfuti yekupfapfaidza (Figure 5-9). Ichangobva kugadzirwa masisitimu ekudya anogona kupomba hupfu zvakananga kubva mubhokisi rekuchengetera.

Chishandiso chekupomba chinowanzoshanda se venturi, uko kumanikidzirwa kana kumanikidzirwa kwemhepo kunopfuura nepapombi, kuumba siphoning effect uye kukwevera poda kubva kune hopper yekudya muhosi yehupfu kana machubhu ekudyisa, sezvinoratidzwa mumufananidzo 5-10. Mhepo igeneralrinoshandiswa kupatsanura zvidimbu zvehupfu kuitira kutakura nekuchaja zviri nyore. Volume uye velocity yehupfu inoyerera inogona kugadziriswa.

Kazhinji, mudziyo wekudyisa unoshandisa chero mweya, vibration, kana michina inosimudzira kubatsira mu "kupwanya" hupfu. Chiito ichi chinoguma nekutakurwa kuri nyore kwehupfu, uku uchibatsira mukugadzirisa vhoriyamu uye velocity yehupfu hwekuyerera kune pfuti yekupfapfaidza (s). Kudzora kwakazvimirira kwehupfu uye mavhoriyamu emhepo anobatsira mukuwana ukobvu hunodiwa hwekuvharisa. Iyo poda yekudyisa inokwanisa kupa zvinhu zvakakwana kune imwechete kana kupfuura electrostatic spray pfuti several tsoka kure. Mafeeders ehupfu anowanikwa muhukuru hwakasiyana, nesarudzo zvichienderana nekushandiswa, huwandu hwepfuti dzichapihwa, uye huwandu hwehupfu huchapfapfaidzwa munguva yakatarwa. GeneralYakagadzirwa zvakanaka neshizha resimbi, iyo feeder unit inogona kukwikwidzwa padhuze ne, kana kutova mubatanidzwa.ral chikamu che, chikwata chekudzorera.

Feeder units, anoshandisa mhepo inoyerera kufambisa kupomba kwehupfu kune pfungwa yekupfapfaidza. Kumanikidzwa, kana kumanikidzwa, mweya unopihwa kune air plenum generally iri pazasi pe feeder unit. Pakati pemhepo plenum nemuviri mukuru weiyo feeder unit membrane, inowanzo gadzirwa ne porous plastic-composite material. Mhepo yakadzvinyirirwa inopfuura nepakati payo ichipinda mumutumbi mukuru weiyo feeder unit, panochengetwa hupfu. Kuita kwemvura kwemhepo kunoguma nekusimudza hupfu hwehupfu kumusoro, kuumba mhirizhonga, kana kuti mvura, nyika (Mufananidzo 5-2). Nekuita kwemvura iyi, zvinokwanisika kudzora metering yehupfu yakapfava kubva kune yekudyisa unit neyakasungirirwa, kana kunyura, venturi-style yekupomba mudziyo (ona Mufananidzo 5-9).

Kana giravhiti yekudya-mhando yekudyisa mayuniti inoshandiswa, kushanda kunosanganisira konical kana funnel-yakaita seyuniti inochengeterwa hupfu. Zvishandiso zvekupomba zvakanamirwa nemhando iyi yekudyisa unit kazhinji ndeyepombi yerudzi rwe venturi. Mune zvimwe zviitiko, vibration kana mechanical stirrers inoshandiswa kuwedzera hupfu siphoning ne venturi effect inogadzirwa nemudziyo wekupomba. Powder isimba rinokweva rinodyiswa kumichina yekupomba, uye fluidization yehupfu haidiwi. Zvakare, ona Mufananidzo 5-9. Hupfu hunogonawo kuendeswa zvakananga kubva kumabhokisi ehupfu kana midziyo uchishandisa kaviri-tsime siphon chubhu, iyo inopa yakakwana yemuno fluidization kubvumira yunifomu kuendesa.

Midziyo yekusevha dzimwe nguva inoshandiswa pamwe chete nemayuniti ekudyisa kudzivirira chero tsvina, hupfu hwehupfu, uye humwe marara, uye kuisa poda isati yamwaya. Aya masefa anogona kukwidzwa zvakananga kana pamusoro peiyo feeder unit kuti zviite nyore kuyerera kwehupfu mukati meyakavharwa loop yekuburitsa hupfu, kupfapfaidza, uye kupora (Mufananidzo 5-1 1).

Zvimedu zvina Basic Equipment for Electrostatic Spray Systems