Kodi apompa shaft chisindikizo?
Zisindikizo za shaft zimalepheretsa madzi kutuluka pamtengo wozungulira kapena wobwerezabwereza.Izi ndizofunikira pamapampu onse ndipo pankhani ya mapampu apakati pali njira zingapo zosindikizira: zonyamula, zosindikizira milomo, ndi mitundu yonse ya zisindikizo zamakina - imodzi, iwiri komanso tandem kuphatikiza zisindikizo za cartridge.Mapampu a rotary positive osasunthika monga ma giya mapampu ndi mapampu a vanene amapezeka ndi kulongedza, milomo ndi makina osindikizira.Mapampu obwereza amakhala ndi mavuto osiyanasiyana osindikiza ndipo nthawi zambiri amadalira zosindikizira za milomo kapena zonyamula.Mapangidwe ena, monga mapampu oyendetsa maginito, mapampu a diaphragm kapena mapampu a peristaltic, safuna zisindikizo za shaft.Mapampu otchedwa 'sealless' awa amaphatikizanso zosindikizira zosasunthika kuti madzi asatayike.
Kodi mitundu yayikulu ya zisindikizo za shaft shaft ndi iti?
Kulongedza
Kuyika (komwe kumadziwikanso kuti shaft packing kapena gland packing) kumakhala ndi zinthu zofewa, zomwe nthawi zambiri zimalukidwa kapena kupangidwa kukhala mphete.Izi zimakanikizidwa m'chipinda chozungulira choyendetsa chotchedwa stuffing box kuti mupange chisindikizo (Chithunzi 1).Nthawi zambiri, kuponderezana kumagwiritsidwa ntchito ngati axially pakunyamula koma kutha kugwiritsidwanso ntchito mopitilira muyeso ndi sing'anga ya hydraulic.
Kale, kulongedza kunkapangidwa kuchokera ku chikopa, chingwe kapena fulakesi koma tsopano nthawi zambiri zimakhala ndi zinthu zopanda mphamvu monga PTFE yowonjezera, graphite yoponderezedwa, ndi ma elastomers a granulated.Kulongedza ndikotsika mtengo ndipo nthawi zambiri kumagwiritsidwa ntchito pazamadzimadzi zokhuthala, zovuta kusindikiza monga ma resin, phula kapena zomatira.Komabe, ndi njira yosasindikiza bwino pazamadzimadzi zopyapyala, makamaka pazovuta kwambiri.Kulongeza nthawi zambiri sikulephera mowopsa, ndipo kumatha kusinthidwa mwachangu panthawi yotseka.
Kuyika zisindikizo kumafuna mafuta odzola kuti asapangike kutentha kwamphamvu.Izi nthawi zambiri zimaperekedwa ndi madzi opopa okha omwe amatha kutsika pang'ono kudzera muzonyamula.Izi zitha kukhala zosokoneza ndipo ngati zamadzimadzi zoyaka, zoyaka, kapena zapoizoni nthawi zambiri zimakhala zosavomerezeka.Pazifukwa izi, mafuta otetezeka akunja angagwiritsidwe ntchito.Kulongedza sikoyenera kusindikiza mapampu omwe amagwiritsidwa ntchito pazamadzimadzi okhala ndi tinthu tonyezimira.Zolimba zimatha kulowa muzonyamula ndipo izi zitha kuwononga shaft ya mpope kapena khoma la bokosi loyikamo.
Kusindikiza milomo
Milomo Zisindikizo, zomwe zimadziwikanso kuti ma radial shaft seals, ndi zinthu zozungulira za elastomeric zomwe zimasungidwa m'malo molimbana ndi shaft ndi nyumba yolimba yakunja (Chithunzi 2).Chisindikizocho chimachokera ku kukhudzana kwapakati pa 'lip' ndi shaft ndipo izi zimalimbikitsidwa ndi kasupe.Zisindikizo za milomo ndizofala pamakampani opanga ma hydraulic ndipo zimapezeka pamapampu, ma hydraulic motors, ndi ma actuators.Nthawi zambiri amapereka chisindikizo chachiwiri, chosunga zosindikizira pamakina ena osindikizira monga makina osindikizira Milomo nthawi zambiri amakhala ndi zovuta zochepa komanso amakhala osauka pazakumwa zoonda, zosapaka mafuta.Njira zingapo zosindikizira milomo zakhala zikugwiritsidwa ntchito bwino polimbana ndi zakumwa za viscous, zosapweteka.Zisindikizo za milomo sizoyenera kugwiritsidwa ntchito ndi zakumwa zilizonse zotsekemera kapena zamadzimadzi zomwe zimakhala ndi zolimba chifukwa zimatha kuvala komanso kuwonongeka pang'ono kungayambitse kulephera.
Zisindikizo zamakina
Zisindikizo zamakina zimakhala ndi nkhope imodzi kapena zingapo zathyathyathya, zopukutidwa kwambiri, imodzi yokhazikika m'nyumba ndi imodzi yozungulira, yolumikizidwa ndi shaft (Chithunzi 3).Nkhopezo zimafuna mafuta, mwina ndi madzi opopa okha kapena ndi madzi otchinga.M'malo mwake, nkhope zosindikizira zimangolumikizana pomwe pampu ili pampumulo.Pogwiritsa ntchito, mafuta odzola amapereka filimu yopyapyala, ya hydrodynamic pakati pa nkhope zotsutsana, kuchepetsa kuvala ndikuthandizira kutentha kwa kutentha.
Zisindikizo zamakina zimatha kuthana ndi zakumwa zambiri, ma viscosity, kupanikizika, ndi kutentha.Komabe, chisindikizo chomakina sichiyenera kuwumitsidwa.Ubwino waukulu wamakina osindikizira osindikizira ndikuti shaft ndi casing si gawo la makina osindikizira (monga momwe zimakhalira ndi kunyamula ndi kusindikiza milomo) ndipo siziyenera kuvala.
Zisindikizo ziwiri
Zisindikizo ziwiri zimagwiritsa ntchito zisindikizo ziwiri zamakina zokhazikika kumbuyo chakumbuyo (Chithunzi 4).Danga mkati mwa seti awiri a chisindikizo nkhope akhoza hydraulically pressurized ndi chotchinga madzi kuti filimu pa chisindikizo nkhope zofunika kondomu adzakhala chotchinga madzi osati sing'anga akupopedwa.Madzi otchinga amayeneranso kugwirizana ndi sing'anga yopopa.Zisindikizo ziwiri zimakhala zovuta kwambiri kuti zigwire ntchito chifukwa chofuna kukakamiza ndipo nthawi zambiri zimagwiritsidwa ntchito pokhapokha pakufunika kuteteza ogwira ntchito, zida zakunja ndi malo ozungulira ku zakumwa zoopsa, zapoizoni kapena zoyaka moto.
Zisindikizo za Tandem
Zisindikizo za Tandem ndizofanana ndi zisindikizo ziwiri koma magulu awiri a zisindikizo zamakina amayang'ana mbali imodzi m'malo mobwerera kumbuyo.Chosindikizira cham'mbali mwazinthu chokha chimazungulira mumadzimadzi opopa koma kutuluka pankhope zosindikizira kumayipitsa mafuta otchinga.Izi zimakhala ndi zotsatira pa chisindikizo cham'mlengalenga komanso malo ozungulira.
Zisindikizo za cartridge
Chosindikizira cha cartridge ndi phukusi losanjidwa kale la zida zamakina zosindikizira.Kupanga ma cartridge kumathetsa zovuta zoyika monga kufunikira koyezera ndikuyika kupsinjika kwa masika.Nkhope zosindikizira zimatetezedwanso kuti zisawonongeke panthawi yoika.Pamapangidwe, chosindikizira cha cartridge chimatha kukhala chimodzi, chowirikiza kapena chokhazikika chomwe chili mkati mwa gland ndikumangidwira pamanja.
Zisindikizo zotchinga gasi.
Izi ndi mipando yapawiri yamtundu wa cartridge yokhala ndi nkhope yopangidwa kuti ipanikizike pogwiritsa ntchito mpweya wolowera ngati chotchinga, m'malo mwamadzi opaka mafuta.Nkhope zosindikizira zimatha kupatulidwa kapena kugwiridwa momasuka panthawi yogwira ntchito posintha mphamvu ya gasi.Mpweya wocheperako ukhoza kuthawira m'chilengedwe komanso mumlengalenga.
Chidule
Zosindikizira za shaft zimalepheretsa madzi kutuluka pamtengo wozungulira wa mpope.Nthawi zambiri njira zingapo zosindikizira zitha kupezeka: zonyamula, zosindikizira milomo, ndi mitundu yosiyanasiyana ya zisindikizo zamakina - imodzi, iwiri komanso tandem kuphatikiza zosindikizira za cartridge.
Nthawi yotumiza: May-18-2023