Water ring vacuum pump impeller damage the main types

The main types of water ring vacuum pump blade damage is blade damage, blade cracks, blade corrosion or cavitation. 1. Blade interruption is mainly due to the pump card has a solid, such as metal blocks, gravel and so on. When the impeller rotates, it hits the solid block or gets jammed by the solid to break the blade. In addition due to the stress concentration of the root of the blade, the small cavity of the pump gas, hydraulic fatigue caused by fatigue caused. Impeller damaged leaves should be promptly replaced, and identify the cause, take appropriate measures (such as due to insufficient strength damage, can increase the number of leaves). 2. Leaf cracks are generally occurred in the root of the blade. Mostly belong to the fatigue crack, and some are due to the difference between the size of the blade and wheel Yi casting cracks caused. Cracked impeller, should be replaced, so as not to break the leaves, causing an accident. 3. Blades should be replaced due to erosion caused by the transport of corrosive gas and liquid, or solid impurities contained in the liquid ring, which are damaged by friction with the impeller surface or damaged due to cavitation. If the impeller is seriously damaged, Damage is not serious, repair welding method can be used. Welding can be heated impeller to 600 ℃, and then make up welding. Repaired welded leaf gun size increases, the file or the lathe must be processed to the original size, otherwise it will affect the original performance.

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