Muaj ntau yam yuav tsum xav txog thaum xaiv ib qho axial split case twj tso kua mis thiab impeller kom raug. 

Ua ntej, peb yuav tsum paub qhov twg cov kua yuav tsum tau thauj thiab nyob rau hauv dab tsi txaus tus nqi. Kev sib xyaw ntawm lub taub hau thiab ntws yuav tsum tau hu ua lub luag haujlwm taw tes. Lub luag haujlwm taw tes yog ncaj qha ntsig txog lub impeller geometry xav tau. Daim ntawv thov nrog ntev ntsug twj tso kua mis (lub taub hau siab) yuav tsum loj txheej kab uas hla impellers dua li daim ntaub ntawv nrog luv ntsug twj tso kua mis (tswj).

Another consideration that is directly related to impeller size is the expected solids content in the application. Many applications have a variety of solids in the pumped media. These solids can range from small abrasive debris such as sand or metal shavings to fine fibrous materials to large solids the size of a baseball or larger. The pump and impeller selected must be able to pass these solids while avoiding clogging and damage from wear. Additional consideration must also be given to the equipment downstream of the axial split case pump. While a pump can be selected to pass a specific type of solids, it cannot be assumed that the downstream piping, valves, and other process equipment will have the same solids handling capabilities. Knowing the expected solids content in the liquid is critical not only to selecting the right size pump and impeller, but also to selecting the impeller style that best suits the application.

Ib qho ntawm feem ntau cov khib nyiab tuav impellers yog qhib impeller. Lub impeller no feem ntau yog siv rau hauv cov dej phwj tuaj thiab cov dej khib nyiab kho thiab muaj cov geometry uas suav nrog cov kab nruab nrab ntawm cov hniav nrog rau sab qhib rau sab nraud. Qhov chaw nruab nrab ntawm cov hniav muab txoj hauv kev du rau lub impeller kom thawb cov khoom nkag los ntawm lub impeller suction qhov mus rau lub volute thiab thaum kawg los ntawm lub twj tso kua mis tawm.

Lwm qhov kev xaiv rau tuav cov khib nyiab yog lub vortex lossis recessed impeller. Hom impeller no yog mounted nyob rau hauv ib lub casing (tsim ib tug loj qhib qhov chaw ntawm lub impeller thiab lub suction chaw nres nkoj) thiab induces kua zog los ntawm vortices tsim los ntawm kev sib hloov ceev ntawm lub impeller. Txawm hais tias txoj hauv kev no tsis muaj txiaj ntsig zoo, nws muab ntau yam txiaj ntsig rau cov khoom nkag. Cov txiaj ntsig tseem ceeb yog qhov chaw dawb loj thiab kev cuam tshuam tsawg heev rau cov khoom nkag.

Pumps used at high altitudes have their own set of solids handling considerations. Since these applications typically use smaller piping, the solids passage size of the entire system must be considered, not just the pump. Typically, the axial split case pump manufacturers offering high-pressure pumps will include a strainer at the inlet to prevent large solids from entering the pump. 

This is ideal for high-pressure applications where minimal solids are expected, but can cause clogging if enough solids accumulate around the screen surface.

There are many factors to consider when choosing the right axial split case pump and impeller, and understanding the various styles of pumps and impellers is often one of the most critical steps.