Working principle of gear oil pump
May 29,2025
Gear pumps operate by the meshing rotation of two gears, and have undemanding media requirements. General pressure is below 6MPa, with a relatively large flow rate. A gear oil pump has a pair of rotating gears installed in the pump body, one active and one passive. These two gears mesh together, dividing the entire working chamber inside the pump into two independent parts: A, the suction chamber, and B, the discharge chamber. When the gear oil pump operates, the active gear drives the passive gear to rotate. When the gears separate from meshing, a partial vacuum is formed on the suction side (A), and liquid is drawn in. The drawn-in liquid fills the various gear valleys and is carried to the discharge side (B). When the gears mesh, the liquid is squeezed out, forming high-pressure liquid that is discharged from the pump outlet.
Previous:
