Small propellers can suck liquid down, drawing air and food into turning blades {blender}|. Sealed propeller shaft prevents leaking.
Household machines {mixer, machine}| {electric mixer} can use two beaters turned by an electric motor. Beaters cross each other's path, without touching, and suck air into turning liquid.
7-Machine-Kinds-Electromechanical
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0225