The gear oil pump is suitable for conveying various lubricating liquids, and the temperature is not higher than 70 °C. If a high temperature of 200 °C is required, it can be equipped with high temperature resistant materials. This pump is not suitable for conveying corrosive liquids containing hard particles or fibers, highly volatile or low flash point liquids, such as gasoline, benzene, etc.
The gear pump works with two gears intermeshing and rotating, and the requirements for the medium are not high. The general pressure is below 6MPa, and the flow rate is relatively large. The gear oil pump is equipped with a pair of rotary gears in the pump body, one is active and the other is passive. Relying on the mutual meshing of the two gears, the entire working chamber in the pump is divided into two independent parts. A is the suction chamber and B is the discharge chamber. When the gear oil pump is running, the driving gear drives the driven gear to rotate. When the gears are engaged to disengaged, a partial vacuum is formed on the suction side (A), and the liquid is sucked in. The sucked liquid fills the tooth valleys of the gears and is brought to the discharge side (B). When the gears are engaged, the liquid is squeezed out to form high-pressure liquid and is discharged out of the pump through the pump discharge port.
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