Shanghai Jianai: Unveiling the Origins and Performance of Fluoroplastic Magnetic Pumps

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In recent years, fluoroplastic magnetic pumps have been widely used, which is mainly due to the characteristics and applications of such pumps. The design of fluoroplastic magnetic pumps not only retains the advantages of conventional magnetic pumps, such as compact structure, attractive appearance, small size, low noise level, and reliable operation, but also features flow-through components made from the world’s most corrosion-resistant material – fluoroplastic. The isolation sleeve is fabricated from a special material with high mechanical strength, which eliminates the magnetic eddy current phenomenon associated with conventional magnetic pumps. Therefore, fluoroplastic magnetic pumps can transport corrosive media such as acids, alkalis, and oxidizers of any concentration (strength) without being damaged. As a professional manufacturer specializing in the research, development, and production of magnetic pumps, Shanghai Jianai Magnetic Pump Factory has been dedicated to the development and manufacture of more than a dozen types of pumps since the 1980s, including high-temperature magnetic pumps, high-pressure magnetic pumps, high-temperature and high-pressure magnetic pumps, magnetic vortex pumps, and fluoroplastic magnetic pumps. These products are widely used in fields such as national defense, military industry, and aerospace, contributing significantly to China’s economic development. The main models of fluoroplastic magnetic pumps available on the market are the CQB type and the CQB-F type. Fluoroplastic magnetic pumps are a new type of pump that utilizes modern magnetic principles and permanent magnet drive technology to achieve contactless torque transmission. From the use of the fluoroplastic material F46 in the 1980s to the innovative application of fluoroplastic alloy technology by Shanghai Jianai Magnetic Pump Factory, the technical use of fluoroplastic magnetic pumps is now highly mature. The fluoroplastic magnetic pump utilizes the effect of a magnetic field; magnetic flux lines pass through the isolation sleeve to drive the inner rotor (i.e., the inner magnet) assembly and the impeller to rotate synchronously. All the components that come into contact with the fluid are made of fluoroplastic or fluoroplastic alloys, allowing it to transport corrosive substances such as acids, alkalis, and oxidizing agents of any concentration. The isolation sleeve is made of a special material with high mechanical strength, which addresses the magnetic eddy current phenomenon that occurs during the operation of magnetic pumps. It eliminates shaft seal leaks resulting from mechanical transmission, thereby resolving issues related to leakage in all forms. As a result, this new type of leak-proof, acid-resistant pump achieves complete sealing, no leakage, no pollution, resistance to strong acids, and high efficiency while saving energy. Its performance meets international standards, allowing it to replace pumps made from expensive materials such as stainless steel and special alloys. Fluoroplastic magnetic pumps are widely used in industries such as chemicals, acid production, alkali production, metallurgy, rare earths, pesticides, dyes, pharmaceuticals, papermaking, electroplating, pickling, radio, research institutions, and the defense industry, for transporting acidic, alkaline, oily, rare and valuable liquids, toxic liquids, and volatile chemical substances of any concentration. The liquid temperature should not exceed -20°C to 100°C, especially when transporting flammable and explosive liquids. The sliding bearings of fluoroplastic magnetic pumps are often made of engineering ceramics, as these materials possess excellent heat resistance, corrosion resistance, and friction resistance. The materials used for manufacturing the sliding bearings of fluoroplastic magnetic pumps include impregnated graphite, filled polytetrafluoroethylene, and engineering ceramics. Since engineering ceramics are brittle and have a low coefficient of expansion, the bearing clearance must not be too small to avoid shaft seizure. Furthermore, the sliding bearings of fluoroplastic magnetic pumps are lubricated by the medium being transported; therefore, different materials must be used to manufacture the bearings depending on the type of medium and the operating conditions.