Working principle of hydraulic pump

2020-05-14 14:21:50

The hydraulic pump is a kind of hydraulic component that provides pressurized liquid for hydraulic transmission, and it is also a kind of pump. Its function is to convert the mechanical energy of power machine (such as electric motor and internal combustion engine) into the pressure energy of liquid.

The cam is driven by an electric motor. When the cam pushes the plunger to move upward, the sealing volume formed by the plunger and the cylinder decreases, and the oil is extruded from the sealing volume and discharged to the required place through the one-way valve. When the cam rotates to the falling part of the curve, the spring forces the plunger downward to form a certain degree of vacuum, and the oil in the oil tank enters the sealing volume under the action of atmospheric pressure. The cam makes the plunger constantly rise and fall, the seal volume periodically decreases and increases, and the pump continuously absorbs and discharges oil.