Tom qab tshaj tawm lub Kaum Hlis qhov teeb meem ntawm International Mining, thiab tshwj xeeb tshaj yog txhua xyoo nyob rau hauv-qhov crushing thiab conveying feature, peb tau saib ze dua ntawm ib qho ntawm cov ntsiab lus tseem ceeb uas ua rau cov tshuab no, lub apron feeder.
Hauv mining,apron feedersua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev ua haujlwm du thiab nce sijhawm. Lawv daim ntawv thov nyob rau hauv cov ntxhia ua circuits yog ntau haiv neeg; Txawm li cas los xij, lawv lub peev xwm tag nrho tsis paub zoo thoob plaws hauv kev lag luam, ua rau ntau cov lus nug tau tsa.
Martin Yester, Ntiaj Teb Cov Khoom Txhawb Nqa, Metso Bulk Cov Khoom, teb qee cov lus nug tseem ceeb dua.
Hauv cov ntsiab lus yooj yim, lub apron feeder (tseem hu ua yias feeder) yog ib hom khoom noj khoom haus uas siv rau hauv kev tuav cov khoom siv los hloov (pub) khoom mus rau lwm yam khoom siv lossis los ntawm cov khoom muag, lub thawv los yog hopper kom rho tawm cov khoom (ore / pob zeb) ntawm tus nqi tswj.
Cov feeders no tuaj yeem siv rau ntau yam kev siv hauv kev ua haujlwm hauv thawj, theem nrab thiab qib siab (rov qab).
Lub tsheb laij teb saw apron feeders xa mus rau cov hlua khi hauv qab, cov menyuam thiab cov log tsheb uas tseem siv tau rau ntawm cov tsheb loj thiab cov excavators.Qhov no hom feeder dominates industries uas cov neeg siv xav tau ib tug feeder uas muaj peev xwm extract cov ntaub ntawv nrog txawv zog.Polyurethane ntsaws ruaj ruaj nyob rau hauv cov saw tiv thaiv abrasive cov ntaub ntawv los ntawm kev nkag mus rau hauv lub puab pins thiab bushings. suab nrov muaj kuab paug rau kev ua haujlwm ntsiag to.Cov kev sib txuas ntawm cov saw hlau yog cov cua sov kho rau lub neej ntev.
Zuag qhia tag nrho, cov txiaj ntsig suav nrog kev ntseeg tau ntau dua, tsawg dua qhov khoom seem, kev saib xyuas tsawg dua thiab kev tswj hwm kev noj zaub mov zoo dua.Nyob rau hauv kev xa rov qab, cov txiaj ntsig no nce kev tsim khoom nrog tsawg tsawg hauv cov txheej txheem ntxhia.
Ib qho kev ntseeg txogapron feedersyog hais tias lawv yuav tsum tau ntsia horizontally.Zoo, tsis zoo li cov kev ntseeg nrov, lawv tuaj yeem ntsia tau rau ntawm txoj kab nqes!Qhov no coj tau ntau yam txiaj ntsig ntxiv thiab nta.Thaum txhim kho lub apron feeder rau ntawm txoj kab nqes, qhov chaw tsawg dua yuav tsum tau tag nrho - tsis tsuas yog txoj kab nqes txwv qhov chaw hauv pem teb, nws kuj txo qhov siab ntawm qhov tau txais hopper.Sloping ntau dua rau apronving thiab feeders. zuag qhia tag nrho, yuav ua rau kom lub ntim nyob rau hauv lub hopper thiab txo lub sij hawm voj voog rau cov tsheb thauj khoom.
Nco ntsoov tias muaj qee yam uas yuav tsum tau paub txog thaum txhim kho lub lauj kaub rau ntawm txoj kab nqes los txhim kho cov txheej txheem.A tsim kom zoo hopper, lub kaum sab xis ntawm inclination, tsim cov qauv kev txhawb nqa, thiab cov kab ke thiab cov ntaiv nyob ib ncig ntawm lub feeder yog txhua yam tseem ceeb.
Ib qho kev xav tsis zoo txog kev khiav hauj lwm ib qho cuab yeej yog: "Qhov sai dua qhov zoo dua." Raws li deb li apron feeders mus, qhov tsis zoo. Ceev ceev los ntawm kev nrhiav qhov sib npaug ntawm kev ua tau zoo thiab kev xa khoom ceev.Lawv khiav qeeb dua txoj siv feeders, tab sis yog vim li cas.
Feem ntau, qhov zoo tshaj plaws ceev ntawm lub apron feeder yog 0.05-0.40 m / s.Yog hais tias cov ore yog non-abrasive, lub ceev yuav nce mus rau saum toj no 0.30 m / s vim muaj peev xwm txo tau hnav.
Kev nrawm dua ua rau tsis ua haujlwm: yog tias koj qhov nrawm dhau lawm, koj yuav muaj kev pheej hmoo nrawm ntawm cov khoom siv.Energy efficiency kuj txo qis vim qhov xav tau ntau zog.
Lwm qhov teeb meem uas yuav tsum nco ntsoov thaum khiav lub apron feeder ntawm kev kub ceev yog qhov muaj feem yuav raug nplua.Tej zaum yuav muaj kev cuam tshuam ntawm cov khoom siv thiab cov phaj.Vim muaj peev xwm ntawm cov plua plav tawm hauv huab cua, kev tsim cov nplua tsis tsuas yog tsim teeb meem ntau dua, tab sis kuj tsim ib qho chaw ua haujlwm txaus ntshai rau cov neeg ua haujlwm tag nrho.Yog li ntawd, nrhiav cov khoom lag luam zoo tshaj plaws yog qhov tseem ceeb tshaj rau kev lag luam.
Apron feeders muaj kev txwv thaum nws los txog rau qhov loj thiab hom ore.Txoj kev txwv yuav txawv, tab sis cov khoom yuav tsum tsis txhob muab pov tseg pointlessly mus rau lub feeder.Koj yuav tsum xav txog tsis tau tsuas yog daim ntawv thov uas koj yuav siv lub feeder, tab sis kuj nyob qhov twg feeder yuav muab tso rau hauv tus txheej txheem.
Feem ntau, txoj cai kev lag luam rau qhov ntau thiab tsawg ntawm apron feeder yuav tsum ua raws li qhov dav ntawm lub lauj kaub (sab hauv daim tiab) yuav tsum yog ob npaug ntawm qhov loj ntawm cov khoom loj tshaj plaws.Lwm yam, xws li tsim kom zoo qhib hopper ua ke nrog kev siv "pob zeb flip phaj", yuav cuam tshuam rau lub lauj kaub loj, tab sis qhov no tsuas yog cuam tshuam rau qee lub sijhawm.
Nws tsis yog qhov tsis yooj yim uas tuaj yeem rho tawm 1,500mm ntawm cov khoom siv yog siv 3,000mm dav feeder.Negative 300mm cov khoom muab rho tawm los ntawm crusher ore pawg los yog cia / sib tov lub thawv feem ntau yog muab rho tawm siv lub apron feeder los pub cov crusher thib ob.
Thaum sizing lub apron feeder thiab coj lub cev muaj zog (lub cev muaj zog), xws li nrog ntau yam khoom siv hauv kev lag luam mining, kev paub thiab kev paub ntawm tag nrho cov txheej txheem yog invaluable.Apron feeder sizing yuav tsum muaj kev paub txog lub Hoobkas cov ntaub ntawv kom raug raws li cov txheej txheem xav tau los ntawm tus neeg muag khoom "Daim Ntawv Thov Cov Ntaub Ntawv" (lossis tus neeg muag khoom tau txais lawv cov ntaub ntawv).
Cov txheej txheem tseem ceeb uas yuav tsum tau txiav txim siab suav nrog tus nqi pub (nruab nrab thiab ib txwm), cov khoom siv (xws li ya raws, gradation thiab cov duab), qhov siab tshaj plaws ntawm qhov loj ntawm ore / pob zeb, qhov ntom ntom ntawm ore / pob zeb (qhov siab tshaj plaws thiab qhov tsawg kawg nkaus) thiab cov khoom noj thiab qhov hluav taws xob.
Txawm li cas los xij, qee zaum kuj tuaj yeem ntxiv rau cov txheej txheem apron feeder sizing txheej txheem uas yuav tsum tau suav nrog.Ib qho tseem ceeb ntxiv uas cov neeg muag khoom yuav tsum nug txog yog hopper configuration.Tshwj xeeb, lub hopper txiav ntev qhib (L2) yog nyob ncaj qha saum lub apron feeder.Qhov twg muaj feem xyuam, qhov no yog qhov tseem ceeb tsis tau tsuas yog rau apron feeder kom raug, tab sis kuj yog ib qho tseem ceeb.
Raws li tau hais los saum toj no, qhov ntom ntom ntawm cov ore / pob zeb yog ib qho ntawm cov qauv tsim nyog thiab yuav tsum suav nrog cov khoom noj khoom haus zoo. Ceev yog qhov hnyav ntawm cov khoom siv hauv ib lub ntim, feem ntau qhov ntom ntom yog ntsuas hauv tons ib cubic meter (t / m³) lossis phaus ib cubic feet (lbs / ft³). ceev zoo li lwm yam khoom siv ntxhia ua.
Yog li vim li cas thiaj li tseem ceeb heev? Apron feeders yog volumetric feeders, uas txhais tau hais tias bulk ntom yog siv los txiav txim siab ceev thiab lub zog yuav tsum tau rho tawm ib qho tonnage ntawm cov khoom ib teev.Qhov tsawg kawg nkaus ceev yog siv los txiav txim qhov ceev, thiab qhov siab tshaj plaws qhov ceev txiav txim siab lub zog (torque) xav tau los ntawm feeder.
Tag nrho hauv tag nrho, nws yog ib qho tseem ceeb uas yuav tsum tau siv qhov tseeb "bulk" ntom es tsis yog "khoom" ntom kom loj koj lub apron feeder.Yog tias cov kev suav no tsis raug, qhov kawg pub tus nqi ntawm cov txheej txheem qis tuaj yeem cuam tshuam.
Kev txiav txim siab lub hopper shear ntev yog ib qho tseem ceeb hauv kev txiav txim siab thiab kev xaiv ntawm lub apron feeder thiab tsav system (lub cev muaj zog).Tab sis qhov no yog li cas? Hopper shear ntev yog qhov ntev ntawm lub skirted hopper rov qab phaj rau shear bar ntawm qhov hluav taws xob kawg ntawm lub hopper.
Lub hom phiaj ntawm kev nrhiav qhov hopper shear ntev ntsuas yog los txiav txim qhov tseeb shear dav hlau kab ntawm cov khoom thiab qhov twg cov khoom nyob rau hauv lub tiab sib cais (shears) los ntawm cov khoom (L2) nyob rau hauv lub hopper.Qhov shear resistance ntawm cov khoom yog feem ntau kwv yees li ntawm 50-70% ntawm tag nrho cov quab yuam / lub hwj chim.Qhov no shear ntev xam yuav ua rau underpower (poob ntawm cov khoom siv).
Cov khoom sib nrug yog qhov tseem ceeb rau txhua yam nroj tsuag.Raws li tau hais ua ntej, lub apron feeder tuaj yeem ntsia tau rau ntawm qhov chaw kom txuag tau qhov chaw.Xaiv qhov ntev ntawm apron feeder tuaj yeem tsis tsuas yog txo cov peev nyiaj siv (capex), tab sis kuj txo cov nqi siv hluav taws xob thiab cov nqi khiav lag luam.
Tab sis qhov ntev npaum li cas txiav txim siab zoo li cas?Qhov ntev ntev ntawm lub apron feeder yog qhov uas tuaj yeem ua tau raws li qhov yuav tsum tau ua hauv qhov luv tshaj plaws tau ntev.Txawm li cas los xij, qee zaum, rau kev ua haujlwm, kev xaiv ntawm feeder yuav siv sij hawm ntev dua rau "hloov" cov khoom siv rau cov khoom siv downstream thiab tshem tawm cov ntsiab lus hloov (thiab cov nqi tsis tsim nyog).
Txhawm rau txiav txim siab qhov luv tshaj plaws thiab qhov ua tau zoo tshaj plaws, lub apron feeder yuav tsum tau muab tso rau hauv lub hopper (L2).
Xaiv txoj kev tsav tsheb rau koj lub apron feeder yuav nyob ntawm kev ua haujlwm thiab lub hom phiaj ntawm lub feeder.Apron Feeders yog tsim los ua haujlwm ntawm qhov sib txawv ntawm qhov ceev kom rho tawm los ntawm kev khaws cia thiab pub rau hauv qab ntawm tus nqi tswj kom ua tau zoo tshaj plaws. Cov khoom yuav txawv vim muaj ntau yam xws li lub caij xyoo, ore lub cev lossis blasting thiab sib xyaw qauv.
Ob hom kev tsav tsheb tsim nyog rau kev hloov pauv ceev yog cov tshuab tsav uas siv cov iav reducers, qhov sib txawv zaus motors thiab sib txawv zaus drives (VFDs), los yog hydraulic motors thiab fais fab units nrog hloov pauv hloov twj tso kua mis.Hnub no, kev hloov pauv ceev txhua yam tsav tau ua pov thawj los ntawm kev xaiv tsav vim kev siv thev naus laus zis thiab peev nyiaj.
Hydraulic tsav tshuab muaj lawv qhov chaw, tab sis tsis suav tias yog qhov zoo tshaj plaws ntawm ob lub zog sib txawv.
Post lub sij hawm: Lub Xya hli ntuj-14-2022
