What type of pump is an example of a rotary pump?

A rotary pump is characterized by its mechanism that moves fluid through the rotation of its components. Positive displacement pumps fall into this category; they function by trapping a fixed amount of fluid and then forcing it through the discharge pipe as the rotor rotates. This makes them efficient in providing a steady flow rate regardless of the pressure in the system.

In the context of rotary pumps, positive displacement types include various designs, such as gear, vane, and screw pumps. Their operation is distinct from centrifugal pumps, which rely on the kinetic energy imparted by a rotating impeller to move the fluid, and typically are not classified as rotary pumps in the same sense of trapping and displacing fluid.

Therefore, the classification of positive displacement as a rotary pump emphasizes its mechanics of moving fluids through rotation, which aligns with the principles of rotary pump operation.