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Trochoid gear pump

A pin drive is applied for this pump. The pink driving rotor rotates 5 rev. while the green driven rotor rotates 4 rev.

Profile of the green rotor consists of trochoid curves.

If the pink driving rotor rotates clockwise the left space between teeth of the two rotors is of low pressure and the right one is of high pressure.

The two gears rotate clockwise. Red arrows show fluid flow.

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