The slurry is sprayed axially into the chamber, and the vortex separates the large-size material from the rest of the slurry and liquid; the remaining slurry and liquid are removed from the chamber in the axial direction and sprayed into the inlet of the centrifugal pump; The material from the centrifugal pump is used as the spray liquid to form the vortex, thereby reducing the wear of the centrifugal pump impeller and improving the efficiency of the centrifugal pump.

When a centrifugal pump is used to pump a slurry flow containing materials of large to small sizes in the liquid, the method of reducing the wear of the centrifugal pump impeller and improving the efficiency of the centrifugal pump is characterized by: a. Injecting the liquid tangentially into the vortex

The 3" Submersible Borehole Pumps a vortex, and part of the liquid is removed from the chamber in a tangential direction; b the slurry is sprayed into the chamber axially, and the vortex separates the large-sized material from the remaining slurry and liquid; c. The mud and liquid that come down are discharged from the chamber in the axial direction and sprayed into the inlet of a centrifugal pump; d use the material from the centrifugal pump as the spray liquid to form the vortex; therefore, the large-size material moves It is discharged toward the outer circle of the vortex. As a result, medium, small, and sized materials and liquids are sprayed into the centrifugal pump. Therefore, the wear of the impeller is reduced, and the pump is allowed to run at high speed, thereby improving efficiency.

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