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Dry pumps are a new generation of vacuum pumps developed in the 1980s. Clean, vacuum, and oil-free molecular contamination are the biggest features of this pump. This not only helps to improve the quality of the media product, but also has the characteristics of fuel economy and environmental protection. Compared with the oil pump, the dry pump has higher reliability and simple maintenance, so the application range of the dry pump has been gradually expanded in recent years. The company began to develop chemical dry pumps at the beginning of 2006. The LH-30H and LH-70H pumps developed by the company were inspected by the national vacuum equipment quality inspection center. All the indicators of the products were excellent and fully met the design requirements. Customers in Shanghai, Zhejiang, Jiangsu, and Guangdong are satisfied with the trial products.
It is understood that the chemical industry is one of the main applications of dry pumps, but there are still many problems in the use of the process, such as water, solvents, acids and alkalis and other liquid environment on the pump vacuum pumping effect. Previously, foreign countries have responded to this problem from the point of view of condensable gases, but none have fundamentally eliminated the bottleneck of dry pumps. To this end, Lange Company has gradually solved the series of problems such as "removal of fluids" and "drainage at work" after the research and development. The dry pump developed by the company can continuously eliminate the air intake from the pump under normal operating conditions. The incoming liquid can therefore be continuously operated in a complex chemical production environment.
New progress made in the development of Beijing Langqi chemical oilless vacuum pump
Recently, the development of chemical series oil-free vacuum pumps (dry pumps) of Beijing Langqi Zhongxin Vacuum Technology Co., Ltd. has achieved new progress. The new LH-110H dry pump pumping speed of 110 l/s has been put into mass production. The model LH-150H pump has also been approved drawings. The successful development of the series of dry pumps has ended the history of China's complete reliance on imports.