Indima Yosakazelo Lwesakhiwo Kwi-Efficiency Yekhisiji EYenziwa Ngaphansi Kwesakhiwo SePolyurethane

Indlela Usakazelo Lusakaza Ubunzima Bokukhetha Kwiikhisiji Ezinokuzakazela Ze-Polyurethane

Ukwahlulwa Kwemithombo Kunye Nokwahlulwa Kwamathuba Ngamaxabiso Amahle

Ukuthotholo kwezikhathi lezi zingcingci ezigcina kuyakhiwa yonke into ekhona ngendlela amathuba ahlangana ngayo. Kusukela ku-15 ukuya ku-18 Hz kukhona indawo engcono kakhulu kwiimisebenzi ezininzi. Le ndawo engqamuleyo ibeka izinto ezide emuva ngelixa iincinane ziphume ngapha kwamagugu, zenza iindlela ezihle zamathuba. Kodwa xa usuke ngaphezulu kuka-22 Hz imiba ishiya. Ngokwesiqu sikaMineral Processing Journal ngoPallandula, ukwahlulwa kuhlawulwa kabini nge-18% ngoba umgca wazo wonke unxibelela kangaka, kuthiwa izinto ezinezilingo zilahlekisa phakathi kwemigca esebenzisweni kunokuba ziphume ngendlela efanelekileyo. Okunakekelwa ngoko kukumthetho ka polyurethane ngokwazo. Izipropathi zakhe ezinezimo zizikhipha ukwahlulwa kusebenza kakuhle nakuba ukuthotholo kuthatha uku-12 ukuya ku-20 Hz, kuzicinga ubungako buka-92 ukuya buka-95% ngokomgangatho wokubuyela emva kwesandla lapho kusebenza.

Imithetho Yekhondlo Nezikhathi Ezifanelekileyo Zokuhlala Kwamagugu Ase-Polyurethane

Amaphropathi okugaya kwe-polyurethane avela kuthiwa yisikhundla esihle sokungcola phakathi kwama-15 kuya ku-22 Hz, okwakhona kakhulu amandla. Xa kusebenza ngesilinganiso ngapha kuka-15 Hz akukho mandla angcono ukuthatha lezinkinga ezibuthayo futhi zilunge ngendlela eyodwa kusindiso. Ngokuphambene, uma kuhamba ngaphezulu kuka-22 Hz kuhlela kuvuleka imiphatlalalo kakhulu kizinsimbi zophawu lapho ukulahlekelwa kuhlala kubonakala. Ukuchazwa kwesivuno ekwenziwe emasiningeni wamanzi wamanzi agcwele wagcine ukuthi ukusebenzisa izidingo ezingama-18 Hz kwalibeka kungenye ya-22% kusindiso ngaphandle kwezinye izindlela zokuhlola eziphathelene nokuhlola. Okwenzela lokhu kube lula ngempela kukuthi i-polyurethane ingena njengoko lezo zingcinga zombolo eziphazanyiswa eziphazanyiswa ezenza ukuthi izikrini zemitholampofu ziphazanye kakhulu kulezi zimo.

Ukusebenza Kwempilo: Ukuthuthukisa Kusindiso Kuma-15–22 Hz Kuzindlela Zokuthola Imanzi

Xa kusebenziswa nge-granite, ukubhaka kwamaphepha akhanya polyurethane phakathi kwe-17 ne-19 Hz kungahlasela inani lezinto ezingadingeka ukuthi zibeshelwe kabusha ngaproximately 30%. Lezi ziphepha zakhona ukwahlukanisa izinxenye ze-aggregate ezikhulu kune-5 kuya ku-20 mm ngokwesilinganiso esilandelene sobubiwa ngama-98%, futhi kuzinzile ekukhundleni kwezinkinga zokubamba kweziphepha okubangelwa kumazinyo. Isibonelo esingcono kusuka emaphandleni eBrazil lapho abasebenzisi babuyekeza isimo salo kusuku oluphathelene nge-25 Hz ukuze kube yinto engayishintsha phakathi kwe-16 ne-20 Hz. Lokhu kukodwa kwalungiswa kwenzeke kube khona umsebenzi omncane ngama-14% njengoba kuchazwe e-Global Aggregates Report 2024, futhi kubalulekile akulahlale kuthinta isivinini esiphindaphindiwe ngokuphelele ngama-350 amathoni ngosuku. Lokhu kubonisa kangakanani ukugcina isilinganiso esifanelekile singaba yisidingo kakhulu kwezimali nokunceda kwezimali kumsebenzi wokuhlukanisa izindiza.

Ukusebenzisa i-Variable-Frequency Drives Ukulungiselela Ngokushesha

Amaphara VFD ingakwazi ukuwenza izibuyekezo ngemini yesikhathi ngokulandelana nokulinganisa, ngokuvamile kwi-plus noma minus 3 Hz, okusinikeza izinhlelo ukuthi zilungise ngempela ematheni ehlukene. Ngokomdla, yisibonelo esivamile sokusebenza kwesigubhu semininga ePeru ababona ukuthi izilinganiso zabuyiswa zakhula phakathi kwe-12 kuya ku-18 iphesenti uma babuyekeza amafrekhenzi kusuka ku-21 Hz ngexesha lokuhlola kuqala kuya ku-15 Hz ngokuthi kususwa izicwashane njengoba ubunzima bezithuthi bahlukene ngokuphila kwesimo. Inkinga yokulungisa lezi zilinganiso ngempeleni ibekhishisa ukugcina okuthintayo ukusebenzisa kwi-frekhenzi enkulu kakhulu, okunjalo ngokuthi i-Mining Equipment Quarterly yayichazela ngo-43 iphesenti yezinkinga ezibalulekileyo zokugcina kwizihlalo. Ngakho ke, lokhu kufakazeka kusebenza ngempela kakhulu, kodwa futhi kusho ukuthi izixhobo zilindela ngokude ngaphambi kokudingeka ukubuyiselwa noma ukulungiswa okukhulu.

Ubunzima bePolyurethane Screen Media Neziphikiswano Ngeminyaka Ehlukene Yevibration

Isiphumo seVibration Ephezulu Kakhulu Kugeza Kwenzeka Ukugcinwa Okudala Ngesikhathi

Xa kusebenzisa izikrini eziphazanywayo ze-polyurethane ngaphezu kwe-22 Hz, ukucopheleka kusuke kushintsha ngokushesha kakhulu ngoba kunezinye zezinkinga ezidingekayo phakathi kwezinto. Umdeli wabaliswe ku-Tribology International ngo-2023 ubonisa into ethile enzima kakhulu futhi. Izixhobo ezisebenziswe ngama-30 Hz endala ama-18 Hz kuphela zange zilinde inkulungwane ephindwe kabili. Futhi xa kufika emandla echaphazeliwe, sikhuluma ngaphezulu kuka-2.8 micrometers per hour lapho lezikrini ziphuselwa kulezi zilingo eziphakeme kakhulu. Kutheni okwenzekayo ngaphansi kwesimo sezinto? Ichaini ye-polymer ziye zihluka, amagugu amancane aphathelwa, kanti ke yonke into ibhubhisa ngokushesha ngaphansi kokuphumula okuphambene nokuphumula okuphambene nezilingo. Kuyavumelana kakhulu ukuthi amagunya ekugcineni ayahlupheka ngokuphumula izixhobo ngaphandle kwezimali ezithile zokusebenza.

Ukuzalana Kwesithunzi Se-Polyurethane Ngaphansi KoKulayisha Okuphindaphindiwe

Xa kugcwelewa phakathi kwezikhathi zokuphazanyiswa ezingu-15 ukuya ku-20 Hz, ipolyurethane ibonisa izici ezilungile kakhulu zokubuyela kwemodi, ekubuyisela ngaphezu kwezimali ezingu-92% ezitholakele. Lokhu kungcono kakhulu kunalokho okutholakala emandla aphansi kuphela apho kuphela ngu-67% kuphela okubuyiselwa. Ukunciphisa kwe-hysteresis kusho lokho leli gama libeke kakhulu ikhono lakho noma kugcinwa njalo. Ngokwesiqiniseko esisha esaphublikiswa e-Journal of Elastomers ngoqeda, izimpendulo zazilondoloza ngu-85% yezilinganiso zakho zomkhawulo wokutshona emva kokugcina kumgca othile wezimali ezingu-1.2 million. Kubo bonke abasebenza eminingini, le zilinganiso zibalulekile kakhulu ngoba izixhobo zokucaca ziyafani na ngezimali eziyintathu amakhulu ukuya ku-800 zonke i-minute kule mizamo engcono.

Umbono Wasekufeni: Ubude Bekuphela Bungenye I-30% Ekugcineni Kwamaphuzu Angu-18 Hz Kunjalo Nga-25 Hz

Izivivinyo ezenzelwe ngaphezu kwezinyanga 14 eGombini lokuphakama kwakunika iziphumo ezihlakaniphileyo. Iphaneli eqhubeka kwi-18 Hz ibe yaneleke kakhulu ngokubukeka, ibambelela okungekaphansi kwe-89% isilinganiso. Lokhu kuyisiphiqa esikhulu kuma-61% etholakele xa iqhubeka kwi-25 Hz. Ukahlukahluka kwalokhu kwakunika mpact emsebenzini. Iphaneli yayisusa ngemva kwezinguquko ezingu-30%, futhi izindleko zokulungisa zishaya ngo-$18 ngaton. Uma uhlinza ngaphansi kweyiziphi izizathu leli kuthinta kusuka ku-polyurethane ngokwalo. Kusebenza kahle kakhulu phakathi kwezinkinga eziphelele, ngokulinganayo phakathi kwe- -35 degrees Celsius ne-60 degrees Celsius. Xa umshinelwa uqhubeka kule mikhawulo enezintandokazi, kusho ukuthi kungakhathalwa ukuthi kuphazanyiswa ngendlela eyayisebenza ngazo ekugcineni.

Izinkinga Ezibalulekile Zokudala Ezingxenye Ne-Mhlaba Yomkhawulo Ku-Polyurethane Vibrating Screens

Ukuqinisekisa Isilinganiso, Isilinganiso Se-Angle, Nenkinga Ye-Frequency Ngokuphelele Kwesimo

Ukufumana iziphumo ezilungile kakhulu kusho ukuthi kudingeka ukulungisa lezinye zimbili ezintathu: ubude bendlela yovibration phakathi kwe-2 kuya ku-5 mm, isikhumba sangaphandle somgwa ngaphakathi kwe-15 kuya ku-25 digri, nokuphindezwa okusethelwe phakathi kwe-15 kuya ku-22 Hz. Xa kusekelwe kumalayizi esithunywa noma esibhishayo, ukukhetha izivivane ezinkulu kusivinini esingezansi sinesiza ukuthi izinto zilinde embonweni kude. Kodwa uma kuchatshiswa nokwahlukaniswa kwamathambo amancane, izivivane ezisukuba ngokushesha nezinzuzo eziphansi zifuna ngcono kakhulu. Abantu abaningi abasebenzisa i-aggregates bafuna ukuthi ukusetha umgcini wabo ku-20 Hz nesikhundla seku-3.5 mm amplitude sibone ukwahlukaniswa okwenzeka ngokwesiqiniseko ekulinganisweni no-92%. Ngaphezu koko, lokhu kusetha kunesiza ukuthi ukugcina kumaterial wembono kube ngaphansi kuka-0.08% ngosuku, okuvumelana xa kubhekwa izindleko ezikude.

Ukuzimiswa Kwamalayizi Nokwahlukaniswa Kwebanga Lamathambo

Izici zezinto ekhokhiwe kuzifundisa inkulu ekubaleni izikhawulo efanayo. Xa kusekelwa ezinto ezingenaphakade kunangaphezu kwe-7%, abasebenzisi bafanele bahlale emgodini ozinzileyo ngaphezu kwama-17 kuya ku-19 Hz ukuze avikele izinkinga zokugayaza. Kodwa, kumaqiniso angaphansi kuka-0.5 kuya ku-5 mm, ukusebenta ngokusho kuka-22 Hz kusemandleni kangaka. Leli fonga lepolyurethane esisemthethweni sithintekile kangaka ekuphatheni kwebanga linqanaba lomaqiniso ngempela. Ezinye iingcinga ezihlala ixesha zazibonisa imiphumo engcono kakuhle - ngaphezu kwe-27% yokongamkela xa isikhathi sezixhobo siyalingana nobungakanani obufunyenwe kwindawo eyi-80 yengxoxo yesilinganiso samagcindezi.

Injiniro Yokuphinda: Ukwahlulana Kwezandla, Isindleko, Nenkokhelo Yekhono

Izinhlelo ezimbili zokumisa okwaziwa ukuthi kwenza phakathi kwe-90 ne-280 kilonewtons yesiseko sobuchwepheshe sibhalwe ngokuthinta izinto eziphathelene ne-polyurethane ezenza phakathi kwe-60 ne-80 Shore A ubukhali. Uma sibuka izigaba zobuchwepheshe, kukhona inkinobho esihlakaniphileyo yekhishini lezimisebenzi ezenza imilenze ye-25 mm ezigulwa ngendawo ephindaphindwe kabusha-18 singaqeda amathegekethe emacaleni ebhodi ngaproximately kanye ne-41 iphasenthi kunazo ezintangisayo eziphinde ziphinde zizenzakalo. Izikhungo ezintsha manje ziyafika nezivumelwano zezilinganiso ezingavumela abasebenzisi ukulungisa izilungiso nge + noma - 3 hertz ngaphandle kokuphazamisa amandla ethorque. Lokhu kuyisimo esibalulekile kakhulu xa kusekelwa kwizinto ezinzima njenge-granite egcwaliswe noma isandla se-iron ore apho ukugcina iqiniso lomsebenzi uyisidingo esibalulekile.

Izinqumo Ezahlukene Zokudizayina Ukubuyekezwa Kwesikrini Se-Polyurethane Esiqhwashelwe Ngemvane

Ukwakhipha Isimo Sekhala Nezilinganiso Zobuchwepheshe Bezimali

Ukuma kwe-mesh yesikrini kufanane nezimathelo zokuvibrata okulungile, imfundo ivutha kangcono. Amakhala kakhulu amanzi akhala. Kumele aqiniseke ukuthi kuthintana kanjani (ngokuvamile phakathi kwe-halfe millimeter ne-3 millimeters) kunye nokuthi izinto zivibrata ngokushesha kangakanani (ngokuvamile ngokoqobo kwe-15 kuze kube-25 hertz). Ezinye izifundo zakamuva zabonisa into ethandwayo ekhona kwi-18 hertz ngqo. Uma isikrini sisebenzisa i-wires ezine-2 mm ngendima yezilili eziphileneyo ezine-1.5 mm, kanye kahle kuyahlukanisa izinto ngaphezu kuka-23% njengoba kuchazwe ku-Vibration Tech Quarterly ngothando lwelinye. Lokhu kusiza ekukhuliseni izinkinga zokunqamula kwemithwalo ngaphandle kokuthi kwenze umgwaqo wokuqhubeka ongashadikiyo ngaleli nyanga yokusebenza ngokuphambene.

Ukusebenzisa uchungechunge lwezibalo ukuqinisekisa nokubhekola imfundo yesikrini

Lamanje, izigwebo zokulungiswa zisebenzisa ubuyiso bokulinganisa kwezinto eziphambileyo (FEA) uma kudingeka ukwazi ukuthi umkhawulo uphindekisa kanjani kumalini ngamafurankhi angahlukeneyo. Izinombolo zakhala futhi - izivivinyo zibonisa ukuthi iziqhamo ezitholakala kuvibration emafurankhi angama-20 Hz ziphatheka kabusha ngaproximately amashumi asishiyagalombili ayisikhombisa ekugcineni kwabo kodwa kuzo ezitholakala kuvibration emafurankhi angama-28 Hz. Uma uhlela ngaphansi kwalokhu, abagqimbi bathatha imizamo engaphezu kwezinkulungwane ezimbili ngezinguqu ezihlanu ukwazi ukuthola ubude bezinsuku ezizosala phambi kokuhlukunyuka kwamashine. Okutholakele kule mizamo yenzelwe ngokuphakade: izinkinga ngomthombo wokuphila kwamashine kusobala ngaproximately kanye nobude obungaphezu okanye obuncane kwamashumi asiyesimanje. Futhi, masithi, ukwazi ukuthi kuzothinta kuphela kwenza isidingo esikhulu kumabhizinisi ehlenzela nezimali apho izophumo ezingavunyelwanga zenza imali enkulu.

Ukwephula Indaba Engachazekanga: Kungani Umgangatho Ophakeme KweVibration Awuchazi njalo Inani Eliphezulu Lokusebenzela

Abantu abaningi bathini ukuthukani kakhulu kubuhle, kodwa ngempela konke okuphakathi kuka-22 Hz kuyadinga ukuba kube nge-12 kuze kube nge-18 iphesenti ngoba amaphethini ayahamba phambili esimweni sokubuyela emuva esengihamba khona. Abasebenzisi basebenzisa izithuthi zokudonsa bafuna into ethintekayo futhi: lapho besebenta izixhobo zabo phakathi kuka-17 ne-20 Hz, bangasebentha ngaphezu kuka-30 iphesenti yomthelela kunalabo abasebenta kuma-25 Hz noma phezulu. Kungani lokhu kuhlala kuhlala kuhlala? Kulomoya, i-polyurethane inesici esithile lapho isondeza ngokushesha kakhulu emshakathini ophezulu. Lokhu kusondeza kwenza kube yisidingo somthelela ukuthwasa wonke lo mlando lapho kusebenziswa ukusika, okokugcina kukunyikela izinto.

Imibuzo Evame Ukubuzwa

Yiziphi izilinganiso ezifanele zomshakathi wezivibrashiya ze-polyurethane?

Isilinganiso sesikhathi esifanele sokuvibrata kwezinkawuli zepolyurethane sikhona kwi-15 ukuya ku-22 Hz. Leli sikhathi sivumela ukuthi izinto ziphakamise ngendlela efanele futhi kutholakale amaphethini, njengoba kunciphisa ukucopheka kwamashini.

Kunjani ukuvibrata kusenzekela ubomi bendawo yezinkawuli zepolyurethane?

Ukuvibrata okuphakade, ikakhulukazi okuphakathi kuka-22 Hz, kushisa ukucopheka nokupheleka kwesimo sendawo yezinkawuli zepolyurethane ngokuba kukhanya ukucopheka kumolekiyuli futhi kuthola amathambo. Ngokuphathelene, ukusebenzisa isikhathi esiphakathi phakathi kuka-15 ukuya ku-20 Hz kuyangisa umthamo wophando lwamashini.

Ubani obalulekile bama-VFD (Variable-frequency drives) ekunxusweni kwezinkawuli?

Izinyeke zokuguquguquka kofrequency (VFDs) zivumela ukuguquka kwe-vibration frequency ngemizuzwana, kuvumela izinkawuli ukuthi zilungiselele emehlweni ephindaphindayo, kuvuthisela ubuchwepheshe, kanye nokongena kwezimali ngokuncipha ukucopheka okungcono kusuku lonke.

Kungani ukulungiswa kwegridi kubalulekile kuzinkingawuli zepolyurethane ezivibrata?

Ukumiswa kwegalvane, kufaka phakathi ijiyometri nebuso bendawo yendawo, kubaluleke ngoba kumele kube yisilinganiso sabalo lwesivimbo sokusebenza ukuqinisekisa ukwahlukaniswa kwezinto ngokwemiphumela futhi ulahle ubungozi bokunqamula, ekugcineni kuhlela isikrini.