The screw pump relies on the change of the pump cavity volume when the screw rotates to suck and transport water. There are single-screw, twin-screw and multi-screw types.
Jet deep well pumps are usually composed of jet pumps and centrifugal pumps with corresponding casings.
Submersible electric pump refers to a kind of water pump in which the impeller of the pump body and the motor driving the impeller are submerged in the water.
The long shaft deep well pump is mostly a vertical single-suction multi-stage centrifugal pump. Its impeller is installed below the moving water level in the well.
The mixed flow pump is a kind of water pump with the characteristics of both the centrifugal pump and the axial flow pump in its structure and working principle.
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