Internal gear pumps use two intermeshing gears of different sizes and a crescent-shaped crescent. The larger gear wheel drives the smaller one, creating and enlarging cavities between the teeth. This creates a vacuum that draws in liquid. The liquid is then transported between the teeth and the crescent and pushed towards the outlet as the cavities shrink.
External gear pumps consist of two gears that rotate in a housing. When the gears rotate, a vacuum is created on the inlet side, which draws in liquid. This liquid is transported along the housing wall in the spaces between the teeth. On the outlet side, the teeth mesh and displace the liquid, forcing it out of the pump under pressure.
Dosing, conveying, emptying and reversing
Abrasive to corrosive media
Dosing, conveying, emptying and reversing
abrasive to corrosive media