The correct method for pressure regulation of hydraulic vane pumps

A、 Pressure regulation method for vane pump 1. Adjust the angle of the impeller blades The angle of each blade on the impeller of the vane pump can be adjusted. Adjusting the angle of the blade can be done by adjusting the blade angle adjustment screw. Usually, the specific adjustment method of the impeller can refer to the user manual of the impeller pump. 2. Adjust the position of the pump shaft inside the pump body On the body of a vane pump, there are usually two flanges, one is the inlet flange and the other is the outlet flange. By adjusting the pump shaft position between these two flanges, pressure regulation of the vane pump can also be achieved.

B、 Principle of pressure regulation for vane pump The working principle of a vane pump is to continuously change the gap between the blades on the impeller and the pump body to complete the process of suction and discharge. When the pump body pressure is different, the angle of the blades also needs to be different. Therefore, the pressure regulation of a vane pump requires adjusting the blade angle on the impeller. The main pressure regulating component of a vane pump is the impeller located near the inlet flange. By adjusting the angle of the blades, the flow rate and pressure of the pump can be changed under different working conditions.

C、 Precautions 1. The adjustment of the vane pump must be carried out in the shutdown state. 2. Before adjusting the pressure of the vane pump, be sure to close the inlet and outlet valves to avoid pump damage or personal injury caused by excessive pressure. When adjusting the blade angle, care should be taken not to make excessive adjustments to avoid affecting the performance and lifespan of the pump. 4. When adjusting the pressure of the vane pump, special attention should be paid to the surface machining and flatness of the vane wheel to avoid damaging the vanes and pump shaft. After the adjustment of the vane pump is completed, the status of the inlet and outlet valves should be checked again to ensure the normal operation of the pump. In short, the pressure regulation of vane pumps requires very careful and professional methods. If you are unfamiliar or lack relevant knowledge, it is recommended to seek professional technical personnel for adjustment.


The above: The difference and connection between vane pump and piston pump