Research on Hydraulic Pump Control Technology

Research on Hydraulic Pump Control Technology

1 blade control technology
The high-pressure energy-saving hydraulic vane pump controls the vane through the electric signal and the pilot hydraulic oil, and uses the solenoid valve to control the pilot oil to pass through the rear distribution disc, leads to the outside of the propeller shaft, and finally flows into the vane pump rotor, the pump shaft, and the vane locking mechanism. 
The pilot hydraulic oil acts on the slide valve to press a small steel ball into the concave surface of the blade. The blade is completely locked in the blade groove of the rotor, and the sealing volume cannot be formed between the blade, the stator, the rotor and the oil distribution plate, and the blade card The pump is idling, thus stopping the vane pump oil supply cycle, reducing the drive or engine output power, and saving energy.
The high pressure energy-saving vane pump is stuck in the rotor when the system does not require flow and pressure. When the system requires flow and pressure, the blades are released from the stuck position, the blades release the pump oil, and the high-pressure energy-saving vane pump continuously and stably provides the oil with a certain flow and pressure for the working cycle. The transition time for blade sticking and release is completed in 0.2 s. That is to say, when the pump shaft and the rotor are idling, the oil does not circulate, reducing energy loss and achieving energy saving effect. However, the blade locking mechanism makes the blade pump rotor structure more complicated.

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