External Pumps - Educational Model

My Educational Mechanical Examples SeriesThis model is one of my educational mechanical mechanism examples on 80mm x 80mm base plates.You can find all models of the series in this collection => [Mechanical Mechanism Examples] The present modelThis is an educational models of two types of external gear pumps. One is a circumferential piston pump (left) and the other is a rotary lobe pump (right). Brief DescriptionThese pumps work on the same basic principle as an external involute gear pump, where fluid is trapped in sealed pockets between the casing and the rotating parts, and is carried from the inlet to the outlet as the rotors turn. Unlike an involute gear pump, however, the two rotors do not directly drive each other. They must be synchronized by separate timing gears. Because their rotor shapes are smoother and more open than involute gear teeth, these pumps are easier to clean and are widely used for hygienic fluids such as food and beverages. In a circumferential piston pump, th