• Since the 1970s, the industry in developed countries has increasingly paid attention to environmental protection issues, and countries in Western Europe led by Germany have successively formulated environmental protection laws and product reliability laws, which put forward harsh requirements for the leakage of pump shaft seals. The weakest link in the centrifugal pump is the shaft seal. The inherent disadvantage of mechanical seals is that leaks must be produced to lubricate the seal end face, and there is always a leakage of 3-8 ml per hour. There are thousands of pumps in large chemical plants, and even if there is no accident, the total amount of leakage to the atmosphere is also considerable, thereby endangering people and the environment. In the face of increasingly severe reliability and low leakage requirements, ordinary pumps paired with mechanical seals to transport various chemical media have approached the limits of development. The only way out is to use an unsealed pump that absolutely prevents leaks.
  • The earliest development of non-sealed pump is the shield pump, because the shield pump has complex structure, high failure rate, can not be repaired on site and other defects, people began to develop and produce magnetic pump products.
  • In 1940, the British HMD company developed and produced the world’s first magnetic centrifugal pump, at that time, the internal and external magnetic steel is used in the aluminum nickel cobalt magnetic material, because the aluminum nickel cobalt magnetic material has poor performance, small transfer efficiency, easy demagnetization, short service life and other defects, the product has not been developed. Until the 1970s, people produced a high-performance rare earth permanent magnet material, and applied to magnetic centrifugal pump products, making magnetic centrifugal pump products to improve and develop.
  • In 1979, China implemented reform and opening up, introduced a lot of foreign technology and equipment, in the introduced equipment, new magnetic centrifugal pump products have also been brought in. Through the use of magnetic centrifugal pump products, it is found that it can transport a variety of chemical media without leakage, put an end to chemical running, taking, dripping, leakage, can reduce environmental pollution, safety risks, and improve
  • The health of employees and the protection of civilized and clean production. At that time, because our economy was in the underdeveloped period, foreign exchange expenditure and other conditions were limited. Therefore, the Ministry of Chemical Industry decided to make the magnetic centrifugal pump domestic, and the first task under it is to develop and produce the fluorine plastic magnetic centrifugal pump. The subject is undertaken by Shanghai Chemical Research Institute, and then Shanghai Chemical Research Institute and Taicang Magnetic drive Pump Factory (the predecessor of Taicang Magnetic Drive Pump Co., LTD.) cooperate to jointly develop and produce fluorine plastic magnetic pump products. By 1983, China’s first CSB type fluorine plastic magnetic centrifugal pump product was born in Taicang, and the technology won the third prize of science and Technology Progress of the Ministry of Science and Technology in 1984. Since then, many domestic enterprises have adopted transplantation, absorption and other means to carry out research and development and production of magnetic centrifugal pump products. After more than 30 years of research and development and production, the level of magnetic centrifugal pumps in China can be close to the international level, and some places can exceed the international level. The products can not only occupy the domestic market, but also occupy the international market, and more gratifying can compete with well-known international enterprises and famous brands.