Why Do Some Pumps With The Same Wattage Have 4 Impellers And Some Have 3 Impellers?

Oct 23, 2024

Three bladed impellers are better than four bladed impellers, and odd numbered impellers are better than even numbered impellers. Single numbered impellers do not resonate when rotating at high speeds, resulting in low noise and stable operation. However, it is difficult to make impellers symmetrical with three blades, while even numbered impellers are easy to achieve symmetry, but resonance is prone to occur, and the machine vibration is severe and the noise is high. At present, people have found that the best wheel is the seven page wheel, but the manufacturing technology is too difficult and can only be used for special equipment such as propellers and water pumps for submarines.