The main types of water ring vacuum pump impeller damage

The type of water ring vacuum pump blade damage is mainly blade damage, blade cracks, blade corrosion or cavitation.

1. Blade breakage is mainly due to stuck solids in the pump, such as metal blocks, gravel, etc. When the impeller rotates, it hits a solid block or is stuck by a solid and breaks the blade. In addition, due to the stress concentration in the root of the blade, the fatigue caused by the gas and hydraulic pressure in the small cavity of the pump is caused. Impellers that have damaged the blades should be replaced in a timely manner, and identify the cause and take corresponding measures (such as increasing the number of blades if the strength is not enough).

2. Blade cracks generally occur at the root of the blade. Most of them are fatigue cracks, and some are casting cracks caused by the great difference in the blade and wheel size. Cracked impellers should be replaced to avoid blade breakage and accidents.

3. Abrasive blade erosion due to the transmission of corrosive gases and liquids, or solid impurities in the liquid ring, friction with the impeller surface damage, or impeller damage due to cavitation, should be replaced if serious Damage is not serious, repair welding can be used. When welding, the impeller can be heated to 600°C and then repaired. The size of the leaf gun after welding must be increased to the original size with a guillotine or lathe, otherwise it will affect the original performance.