Classification of Electric Hydraulic Pump 12v
1. According to whether the output flow can be adjusted: quantitative pump variable pump
2. According to the structure of the form: gear pump, vane pump, plunger pump, screw pump
3. According to whether the direction of oil supply can be changed: one-way pump, two-way pump
4. According to pressure grading: low-pressure pump, medium-pressure pump, high-pressure pump
5. According to the working principle, it can be divided into positive displacement pumps (hydraulic pumps are positive displacement pumps).
Structure:
1. Gear pump
The size is small, the structure is simple, the cleanliness of the oil is not strict, and the price is cheaper; However, the pump shaft is affected by the balance force, serious wear, and leakage.
2, blade pump
It is divided into a double-acting vane pump and a single-acting vane pump. The pump has uniform flow, smooth operation, low noise, high working pressure, and volumetric efficiency than the gear pump, and complex structure than the gear pump
3, plunger pump
High volumetric efficiency, small leakage, can work under high pressure, mostly used in high-power hydraulic systems; However, the structure is complex, the material and processing accuracy is required to be high, the price is expensive, and the cleanliness of the oil is required to be high.
Generally, the plunger pump is used when the gear pump and blade pump cannot meet the requirements. There are some other forms of hydraulic pumps, such as screw pumps, but the application is not as common as the above three.
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