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The hydraulic pump is the power component of the hydraulic system. It is driven by an engine or an electric motor, sucks oil from the hydraulic oil tank, forms the pressure oil and discharges it, and sends it to the actuator. Hydraulic pumps are divided into gear pumps, plunger pumps, vane pumps, and screw pumps according to their structure.

 

Common types of hydraulic pumps:

1. According to whether the flow can be adjusted, it can be divided into the variable pump and quantitative pump. The output flow can be adjusted according to the needs called a variable pump, the flow can not be adjusted called a quantitative pump.

2. According to the pump structure commonly used in hydraulic systems, is divided into three types: gear pump, vane pump, and plunger pump.

Gear pump: small in volume, simple in structure, less strict on oil cleanliness, and cheaper in price; but the pump shaft is subject to unbalanced force, serious wear, and large leakage.

Vane pump: divided into double-acting vane pump and single-acting vane pump. This kind of pump has uniform flow, stable operation, low noise, higher working pressure and volumetric efficiency than a gear pump, and a more complicated structure than a gear pump.

The internal structure of the hydraulic pump

The internal structure of the hydraulic pump

Plunger pump: high volumetric efficiency, small leakage, can work under high pressure, mostly used in high-power hydraulic systems; but the complex structure, high requirements for materials and processing accuracy, high price, and high requirements for oil cleanliness.

Piston pumps are generally used when gear pumps and vane pumps cannot meet the requirements. There are some other forms of hydraulic pumps, such as screw pumps, etc., but the application is not as common as the above three.

 

As a professional gear pump wholesaler, Dali, the products include wood separation pump, double gear pumps, hydraulic gear pumps, etc., please contact us if you need them!