Lub impeller ntawm lub twj tso kua dej yog lub ntsiab ntawm lub twj tso kua mis centrifugal, ua los ntawm cov hlau cam khwb cia. Cov hniav ntawm lub impeller ntawm lub twj tso kua mis dej ua lub luag haujlwm tseem ceeb, thiab cov duab thiab qhov loj ntawm lub impeller yog ze rau kev ua haujlwm ntawm lub twj tso kua mis. Cov twj tso kua mis feem ntau tuaj yeem muab faib ua ob hom: ib qho suction thiab ob chav suction.
Ib leeg suction impellers yog ib leeg-sab suction, thaum me me twj tso kua mis impellers feem ntau yog hom no. Ob chav suction impellers yog siv rau ob sab ntawm cov dej nqus, thiab cov twj tso kua dej siab siv ob chav suction impellers.
Muaj plaub yam tseem ceeb ntawm centrifugal twj impellers:
(a) kaw hom;
(b) Pem hauv ntej ib nrab qhib;
(c) Sab nraub qaum ib nrab qhib;
(d) Qhib hom
1. Kaw impeller:
Ua los ntawm cov hniav thiab pem hauv ntej thiab nram qab daim hlau. Kaw impellers muaj kev ua haujlwm siab thiab nyuaj rau kev tsim khoom, thiab tau siv dav hauv cov twj centrifugal. Tsim nyog rau kev xa cov kua dej huv uas tsis muaj viscosity thiab tsis muaj cov khoom, xws li dej thiab kev daws teeb meem.
2. Semi qhib impeller:
Feem ntau muaj ob hom qauv. Ib tug yog pem hauv ntej semi qhib impeller, uas yog tsim los ntawm lub rear cover phaj thiab hniav. Cov qauv no muaj kev ua haujlwm qis dua thiab yuav tsum tau kho qhov sib txawv ntawm lub nplhaib txhawm rau txhim kho kev ua haujlwm. Lwm qhov yog lub rear semi qhib impeller, uas yog tsim los ntawm pem hauv ntej cover phaj thiab hniav. Vim yog siv tib lub nplhaib sealing raws li lub kaw dej twj tso kua mis impeller, qhov ua tau zoo yog qhov pib zoo ib yam li cov kaw impeller. Ntxiv nrog rau kev xa tawm cov kua, cov hniav kuj tseem muaj cov nyhuv sealing (ntawm cov hniav rov qab lossis cov impeller thib ob). Lub semi open impeller yog tsim rau kev xa cov kua uas muaj cov khoom tshem tawm xws li cov khoom siv thiab cov fibers. Kev tsim khoom nyuaj ntawm semi open impellers yog qhov tsawg, tus nqi qis, thiab kev hloov pauv tau muaj zog. Nyob rau hauv xyoo tas los no, lawv daim ntawv thov nyob rau hauv centrifugal twj rau refining thiab tshuaj lom neeg kev lag luam tau maj mam nce, thiab lawv yog siv los thauj cov dej huv thiab kua zoo ib yam li cov dej huv.
3. Qhib hom impeller:
Lub impeller nrog tsuas yog cov hniav thiab cov hniav txhawb nqa ribs, tsis muaj daim npog pem hauv ntej thiab nram qab (qhib hom impeller muaj 2-5 tsawg dua). Kev ua haujlwm ntawm lub twj tso kua mis impeller yog qhov tsawg thiab nws daim ntawv thov raug txwv. Nws yog tsuas yog siv los thauj cov kua nrog siab viscosity thiab slurry zoo li kua.
Cov hniav ntawm lub centrifugal twj tso kua mis impeller feem ntau yog rear nkhaus hniav. Muaj ob hom hniav: cylindrical thiab twisted. Daim ntawv thov ntawm twisted hniav tuaj yeem txo cov load ntawm cov hniav, txhim kho kev ua haujlwm ntawm cov twj centrifugal, thiab txhim kho lawv cov kev tiv thaiv rau cavitation. Txawm li cas los xij, kev tsim khoom nyuaj thiab tus nqi kuj tseem siab.
Lub centrifugal twj tso kua mis rau refining thiab tshuaj kev lag luam yuav tsum tau lub impeller los ua ib tug cam khwb cia los yog tag nrho welded ib tug dej twj tso kua mis impeller. Welded dej twj tso kua mis impellers tau tsim nyob rau hauv xyoo tas los no thiab feem ntau yog siv nyob rau hauv tshuaj tshwj xeeb centrifugal twj ua los ntawm hlau cov ntaub ntawv uas tsis zoo casting kev ua tau zoo, xws li hlau thiab nws alloys. Lub geometric raug thiab nto smoothness ntawm welded dej twj impellers yog superior rau cam khwb cia impellers, uas yog zoo rau kev txhim kho cov efficiency ntawm centrifugal twj.