1.Impeller:Theimpelleristhemainworkingpartofacentrifugalpump,whichiscomposedofahubandanumberofblades.Thebladesareconnectedtothehubatanangle,andthebladesarecurvedtoformacurvedsurface.Thiscurvedsurfaceisdesignedtocreateapressuredifferentialinordertopropelfluidthroughthepump.Thematerialoftheimpellerisusuallymadeofcastironorstainlesssteel,andtheshapeandnumberofbladesaredesignedaccordingtothespecificflowconditionsandapplication.2.Shaft:Theshaftistheconnectingpartbetweentheimpellerandthemotor,andisusuallymadeofhigh-strengthsteelorstainlesssteel.Theshafthastobeabletotransmitthetorquegeneratedbythemotortotheimpeller,whilealsopreventingitfrombendingorvibrating.3.Bearing:Thebearingisanimportantpartofthecentrifugalpump,andisusuallymadeofhigh-precisionsteelorstainlesssteel.Itisdesignedtoreducefrictionbetweentherotatingshaftandthestationarybodyofthepump,andalsotosupportandprotecttheshaftfromwearandtear.4.Seals:Thesealsareusedtopreventfluidfromleakingfromthepump,andareusuallymadeofrubberorothermaterialstoprovideatightseal.Itisimportanttochoosetherighttypeofsealforthespecificapplicationinordertoensurethatthepumpisrunningproperlyandwithoutanyleaks.5.Casing:Thecasingisthepartofthepumpthathousestheothercomponents,andisusuallymadeofcastironorstainlesssteel.Thecasingisdesignedtoholdtheothercomponentsinplaceandtoprotectthemfromdamageduetoexternalfactors.