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.
Evaporation continuous crystallizer is mainly used for the following aspects:
1. Chemical industry: used for the crystallization separation and purification of chemical raw materials such as organic compounds and inorganic salts.
2. Food industry: used for crystallization and refining of food raw materials such as sugar and salt.
3. Pharmaceutical industry: used for crystallization and purification of active ingredients, intermediates, etc. in pharmaceuticals.
4. Environmental protection industry: used to treat the crystallization and recovery of salts, organic compounds, etc. in wastewater.
5. Mineral industry: used for the separation and purification of metal salts, rare earth elements, etc. in minerals.
Evaporative continuous crystallizer is a device used to separate solid crystals from a solution. It is mainly used in crystal preparation and purification processes in industries such as chemical, pharmaceutical, food, and fertilizer. It can evaporate, concentrate, and crystallize the solutes in the solution to obtain high-purity crystal products. Evaporative continuous crystallizers have the advantages of high efficiency, energy conservation, high automation, and small footprint, and are widely used in crystal preparation and purification processes in industries such as chemical, pharmaceutical, and food.
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