What aspect of rotary pumps is most commonly used to move liquid?

Rotary pumps are designed to move liquids through the use of mechanisms that create a continuous flow. The most commonly utilized aspect of these pumps is the use of closely meshed vanes, gears, or lobes. These components work by trapping a specific volume of liquid and transporting it from the intake side to the discharge side of the pump as the pump rotates.

This mechanism allows for a smooth, consistent flow and can handle a variety of viscosities, making it suitable for different applications. The rotation of the vanes, gears, or lobes also influences the pressure and flow rate, which can be adjusted based on the pump design and operational requirements.

Other types of pump mechanisms, such as pistons and cylinders or flexible diaphragms, operate based on different principles and may not be as efficient for the continuous flow that rotary pumps facilitate. Similarly, magnetic impellers rely on different operational principles, often used in more specialized applications rather than standard liquid transfer. Therefore, the versatility and efficiency of closely meshed vanes, gears, or lobes make them the primary choice for effectively moving liquids in rotary pumps.