Roottorivaneepumput

Roottorivaneepumput is a term used in engineering discourse to describe a family of positive-displacement pumps that hybridize rotor-based pumping with vane sealing. In the proposed designs, two counter-rotating lobed rotors generate fluid pockets as sliding vanes maintain contact with the chamber walls, producing metered flow while minimizing leakage.

Construction: Core elements are two counter-rotating lobed rotors housed in a sealed casing with inlet and outlet ports. A vane carriage or cage carries radial vanes that ride in slots or on bearings to form sealing lines with the rotor surfaces. The timing mechanism synchronizes rotor speeds to maintain stable pocket formation.

Operation: As the rotors turn, fluid is trapped between adjacent lobes and vanes and carried along the chamber. Pockets are expelled at the outlet, delivering a steady, quasi-positive-displacement flow. The flow rate depends on rotational speed and pocket count; vane position and clearance affect sealing and pressure capability.

Performance and design considerations: The concept aims for smooth flow with moderate shear, good self-priming, and potential accuracy for metering. Mechanical complexity, wear of vanes, and sensitivity to fluid viscosity and particulates are noted drawbacks. High-pressure performance may require tighter tolerances and robust vane materials.

Applications and status: As a concept, roottorivaneepumput have appeared in niche literature and experimental setups and have not achieved broad industrial standardization. Potential applications include precise dosing in research, low- to medium-viscosity fluid handling, and specialized vacuum or metering tasks.

See also: Positive-displacement pump, vane pump, Roots blower.