How the hydraulic pump works？
It is a hydraulic component that supplies pressurized liquid to a hydraulic transmission and is a type of pump. Its function is to convert the mechanical energy of a power machine (such as an electric motor and an internal combustion engine) into the pressure energy of a liquid. The figure shows the working principle of a single plunger pump. The cam is rotated by the motor. When the cam pushes the plunger upward, the seal volume formed by the plunger and the cylinder is reduced, the oil is squeezed out of the sealed volume, and discharged through the check valve to the desired place. When the cam rotates to the lowering portion of the curve, the spring forces the plunger downward to create a degree of vacuum, and the oil in the tank enters the sealed volume under atmospheric pressure. The cam constantly raises and lowers the plunger, the seal volume is periodically reduced and increased, and the pump continuously draws oil and drains oil.