Three point analysis of the working principle of gear pump

1. The single-acting gear is embedded in the groove..

Free to slide...

When rotation is generated..

The gear is thrown to the pump housing under the centrifugal action..

Gear pump is positive displacement pump..

The two adjacent gears move to the lower side with the minimum volume closed with the gear oil pump housing and rotor...

Maximum at the edge..

When the rotor rotates clockwise..

The process of the adjacent two gears from the bottom to the top is the volume increase, so the oil absorption from the fourth quadrant to the second quadrant from the top to the bottom is the volume decrease process...

So the pressure goes from the second to the fourth quadrant.

2. Double action: when the motor drives the rotor to rotate along...

KCB gear oil pump extends out under the dual action of centrifugal force and pressure oil at the bottom of the gear..

Its top is attached to the inner surface of the stator.

The four gears on the four concentric arcs, the outer surface of the rotor, the inner surface of the stator and the two valve plates respectively constitute four sealing working oil cavies.

These oil cavities as the rotor rotates..

Sealing oil cavity from small to large or from large to small changes..

The oil suction window of the valve plate  is connected with the oil suction or the oil drainage window is connected with the oil drainage: the oil is inhaled or pressed out.

3. During each rotation of the rotor...

Each working oil chamber completes two oil suction and oil pressure...

So called double acting gear pump..

Because the high and low pressure cavities are symmetrical to each other...

Shaft force balance..

Is the unloaded type.