Working principle of hydraulic pump

The working principle of the hydraulic pump is that the movement brings about a change in the volume of the pump chamber, thereby compressing the fluid so that the fluid has pressure energy. The necessary condition is that the sealed volume of the pump chamber changes.
The hydraulic pump is a hydraulic component that provides pressurized liquid for hydraulic transmission and is a type of pump. Its function is to convert the mechanical energy of the power machine (such as an electric motor and an internal combustion engine, etc.) into the pressure energy of the liquid. Its cam is driven to rotate by the motor. When the cam pushes the plunger to move upward, the sealed volume formed by the plunger and the cylinder body decreases, and the oil is squeezed out of the sealed volume and discharged to the required place through the one-way valve. When the cam rotates to the descending part of the curve, the spring forces the plunger downward to form a certain vacuum, and the oil in the oil tank enters the sealed volume under the action of atmospheric pressure. The cam causes the plunger to rise and fall continuously, and the sealed volume decreases and increases periodically, so the pump continuously absorbs and discharges oil.
There are many factors that affect the service life of the hydraulic pump. In addition to the design and manufacturing factors of the pump itself, it is also related to the selection of some components related to the use of the pump, and the operation during the test run.