Recently, China Non-Ferrous Metals Industry Association hosted the scientific and technological achievements appraisal project of “Alumina Production Non-contact Mechanical Seal Technology Research†undertaken by Shandong Aluminum Industry Co., Ltd. in Zibo City, Shandong Province. The appraisal committee heard the project's research report, reviewed the relevant appraisal data, visited the site, and after questioning and discussion, the experts believed that the project successfully developed a full-liquid-film lubrication non-contact mechanical seal device for alumina production centrifugal pumps. The shaft seal leakage problem increases the reliability and operating cycle of the pump. The project has the following main technical characteristics and innovations: (1) The use of a rotating spiral groove structure to form a lubricating film with strong anti-variation force, achieving zero leakage in both directions; 2 The device has strong adaptability to the pressure of cooling water and avoids water The sudden change in pressure causes damage to the seal and improves the pump's operating cycle. 3 This device is effective for sealing centrifugal pumps that deliver high solids media, high PV values, and frequent starts.
Experts believe that this technology is a domestic initiative and has reached the international advanced level, and it is recommended to promote the application as soon as possible.
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