Electric Hydraulic Pump

Electric 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 power machines (such as electric motors and internal combustion engines) into the pressure energy of liquids. The output flow rate that can be adjusted according to needs is called a variable displacement pump, while the flow rate that cannot be adjusted is called a fixed displacement pump. There are three commonly used pumps in hydraulic systems: gear pumps, vane pumps, and plunger pumps.

Gear pump: smaller in size, simpler in structure, less strict in oil cleanliness requirements, and cheaper in price; But the pump shaft is subjected to unbalanced force, severe wear, and significant leakage.

Vane pump: divided into double acting vane pump and single acting vane pump. This type of pump has uniform flow rate, smooth operation, low noise, higher working pressure and volumetric efficiency than gear pumps, and a more complex structure than gear pumps. Plunger pump: With high volumetric efficiency and small leakage, it can work under high pressure and is mostly used in high-power hydraulic systems; But the structure is complex, with high requirements for materials and processing accuracy, expensive prices, and high requirements for oil cleanliness. Generally, plunger pumps are only used when gear pumps and vane pumps cannot meet the requirements. There are also some other forms of hydraulic pumps, such as screw pumps, but their applications are not as common as the three mentioned above.