Working principle of hydraulic pump
Release time:
2026-01-22
Hydraulic pumps rely on periodic changes in sealing volume to achieve oil suction and pressure. When the prime mover drives the pump to rotate, the sealing volume inside the pump increases, forming a local vacuum.
Hydraulic pumps rely on periodic changes in sealing volume to achieve oil suction and pressure. When the prime mover drives the pump to rotate, the sealing volume inside the pump increases, forming a local vacuum. The oil in the tank enters the sealing volume through the suction valve under atmospheric pressure (suction process); Subsequently, the sealing volume decreases, and the oil is squeezed and discharged from the pump through the pressure valve into the hydraulic system (pressure oil process). This process converts mechanical energy into hydraulic energy output through alternating changes in volume.
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