Downflow hom txhais tau hais tias cov kev taw qhia ntws ntawm cov cua kub ntws yog tib yam li cov khoom siv, ob qho tib si txav los ntawm cov khoom noj mus rau qhov kawg ntawm qhov tso tawm. Thaum cov khoom cia li nkag mus rau hauv lub nruas, lub tshuab ziab khaub ncaws yog qhov loj tshaj plaws thiab cov ntsiab lus dej dawb yog siab. Kev ziab nrawm ntawm sab pem hauv ntej ntawm hom ntws yog qhov ceev tshaj plaws, thiab tom qab ntawd raws li cov khoom txav mus rau qhov chaw nres nkoj tawm, qhov kub ntawm cov khoom nce, qhov ziab kom qhuav ua rau me me, cov khoom tsis muaj dej noo tsawg, thiab ziab ceev. kuj qeeb. Yog li ntawd, lub tshuab ziab khaub ncaws ntawm down-flow drying nruas yog ntau uneven tshaj li counter-flow hom.

Lub counter-flow hom yog tias qhov kev taw qhia ntawm cov cua kub ntws tawm yog qhov sib txawv ntawm qhov txav ntawm cov khoom siv, thiab qhov kub ntawm lub nruas yog qhov siab tshaj plaws ntawm cov khoom siv hluav taws xob kawg, thiab qhov kub thiab txias yog qis dua ntawm cov khoom siv hluav taws xob kawg. . Qhov kub ntawm cov khoom yog qhov qis tshaj plaws thaum nws thawj zaug nkag rau hauv lub nruas, thiab qhov kub thiab txias yog qhov siab tshaj plaws ntawm qhov hluav taws xob kawg, uas yog nyob rau hauv tib txoj kev raws li qhov kub thiab txias ntawm lub nruas. Vim tias qhov kub siab tshaj plaws ntawm lub nruas yog nyob rau tib sab raws li qhov kub siab tshaj ntawm cov khoom siv, thiab qhov kub qis tshaj ntawm lub nruas yog nyob rau tib sab raws li qhov kub thiab txias ntawm cov khoom, yog li lub zog tsav ntawm countercurrent drying yog ntau uniform. tshaj li ntawm downstream drying.

Feem ntau, cov cua kub ntawm lub nruas yog tsuas yog ua los ntawm cua sov convection. Hom down-flow txhais tau hais tias lub combustion chamber thiab cov khoom noj khoom haus tau nruab rau ntawm tib sab, thiab cov kev taw qhia ntws ntawm cov cua kub ntws yog tib yam li cov khoom siv. Txwv tsis pub, nws yog hom counter-flow.

Thaum lub thoob khib nyiab qhuav thiab cua sov, sab hauv ntawm lub nruas ziab tuaj yeem muab faib ua peb thaj chaw raws li kev hloov pauv ntawm cov khoom siv kub: dehumidification cheeb tsam, thaj chaw ziab thiab cua sov. Vim tias cov khoom muaj cov dej noo thaum nws thawj zaug nkag rau hauv lub nruas, cov dej noo hauv cov khoom yuav raug tshem tawm hauv thawj cheeb tsam, cov aggregate yuav qhuav nyob rau hauv lub thib ob cheeb tsam, thiab lub nruas yuav nyob rau ntawm qhov kub siab tshaj plaws nyob rau hauv lub thib peb cheeb tsam. cov khoom qhuav kom nce qhov kub thiab txias. Feem ntau hais lus, raws li qhov kub ntawm cov khoom nce hauv lub nruas tam sim no, qhov ziab nruab nrab kuj nce, yog li lub zog ziab yog qhov sib xws, qhov nruab nrab kub sib txawv ntawm cov cua kub ntws thiab cov khoom siv loj, thiab kev ua haujlwm ntawm counter-tam sim no ziab yog tus du. ntws siab.

Nyob ntawmnruas hom asphalt mixing cog, lub nruas muaj ob txoj haujlwm, ziab thiab sib tov; thaum nyob ntawmbatch asphalt mixing cogthiab covnruam asphalt mixing cog, lub nruas tsuas yog ua lub luag haujlwm ntawm cua sov. Vim tias qhov sib xyaw ua ke hauv cov khoom sib xyaw ua ke thiab cov nroj tsuag txuas ntxiv asphalt sib xyaw yog nqa tawm los ntawm lub lauj kaub sib xyaw, tsis tas yuav ntxiv asphalt rau lub nruas rau kev sib xyaw, yog li siv lub tshuab ziab khaub ncaws kom qhuav nrog kev ziab kom qhuav.