The core working principle of an oil pump-Baoding Wofide Agricultural Machinery

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The core working principle of an oil pump

2026-02-06

The moving parts (gears, vanes, plungers) and the pump housing form a sealed cavity whose volume varies periodically. When the cavity volume increases, a negative pressure is created, drawing oil fluid into the pump from the suction port.

The moving parts (gears, vanes, plungers) and the pump housing form a sealing chamber whose volume varies periodically.
When the cavity volume increases, a negative pressure is created, and the oil fluid is drawn in from the suction port.
As the cavity volume decreases, oil pressure rises, and the oil is forcibly expelled from the outlet.
The flow distribution structure (check valve, flow distribution plate) ensures unidirectional fluid flow and prevents backflow.

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Main application scenarios of oil pumps

Oil pumps are widely used in multiple fields.

Main application scenarios of oil pumps

Oil pumps are widely used in multiple fields.

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