Different types of axial flow pumps, their dynamic blade adjustment mechanism is not the same. The fully regulated axial flow pump moving blade adjusting mechanism is generally divided into the following.
1.Lever type movable blade adjusting mechanism.
2.Worm and worm type movable blade adjusting mechanism.
3.Mechanical hydraulic dynamic blade adjusting mechanism.
The axial flow pump is adopted to change the regulation method of the angle of the blade device, the regulating efficiency is high, and the throttling loss is not generated. And the pump in the blade after adjustment, still can work in the best efficiency area.
Adjustable blades of axial flow pumps, such as long outage time, should pay attention to prevent corrosion, if necessary, after the intake valve closed, should try to release the water inside the pump. And the pump shaft from the top, so that the thrust bearing oil inlet.
Commonly used in the regulation mechanism, generally divided into two types of mechanical and hydraulic, large pump more than the use of hydraulic control mechanism.
Pressure oil from the oil pressure device, through the distribution valve, to the servo cylinder control the opening and closing of the blade.
