When the water pump rotor works at a high speed, if its quality is uneven, a large centrifugal force will be generated when rotating, causing the pump to vibrate or damage. The balance of the rotor is achieved through the quality balance of the various components (including shafts, impeller, shaft sleeve, balance disk, etc.). Therefore, the newly replaced impeller should be carried out. The specific method is:

(1) Put the leaf wheels on the pseudo axis and place it on the static balance test table that has been adjusted. There are two tracks on the test bench, and the pseudo axis can be rolled freely on it.

(2) Tag on the side of the impeller. If the quality of the impeller is unbalanced, the heavier side will always be automatically transferred below. Increase the weight of the weight in the symmetrical position (that is, the lighter side) of the place (that is, the lighter side), and the impeller can be stopped at any position at any position.

(3) Called the quality of weight blocks. It is not to add weight on one side with a lighter impeller, but to achieve the balance of the impeller by reducing weight on the heavier side. When weight loss, you can use milling machines to mill or grind with a wheel (when the amount is not divided), but be careful not to exceed 1/3 of the thickness of the leaf wheel cover. The impeller after the quiet balance, the allowable deviation value of the quiet balance shall not exceed the accumulation of the outer diameter value of the leaves and 0.025g/mm. For example, the impeller with a diameter of 200mm has a allowable deviation to 5G.