The new improved anticorrosive technology scheme synthesizes the advantages of several existing corrosion-resistant liquid ring vacuum pumps. According to the different requirements of corrosion resistance and cavitation degree of the overflow parts, different technological measures are adopted on the matrix made of cast iron, cast steel or carbon steel, so as to greatly improve its acid resistance, alkali resistance, cavitation resistance and other properties, and prolong its service life. Long. Under the condition of vacuum 3kPa and water and steam scouring, the lining of overflow parts can work reliably in the prescribed maintenance cycle. Maintenance period is 0.5-2 years according to different working conditions such as corrosion medium, temperature and pump speed. Compared with stainless steel, under the same working conditions and service life, the anticorrosion cost can be effectively reduced by 1-5 times.
Because the base of the vacuum pump parts will not be destroyed, when the corrosion-resistant liner aging failure, it can be easily, economically and effectively repeated maintenance.
It can be applied to all water-ring vacuum pumps with flat-plate distributor structure, with low cost, long service life and relatively simple manufacturing process. It is suitable for pumping corrosive gases without solid substances in chemical, metallurgical, environmental protection, paper-making, pharmaceutical and other industries.
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