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As a representative of positive displacement pumps, screw pumps are widely used in industries such as petroleum and chemical engineering due to their compact structure, stable operation, and adaptability to complex media. They particularly excel in conveying high-viscosity fluids, particle-laden media, or shear-sensitive materials. However, in practical applications, improper selection often leads to issues such as low efficiency, increased energy consumption, and frequent failures, primarily because users focus only on basic parameters like flow rate and head while neglecting medium characteristics, operating conditions, and long-term costs. This article analyzes common selection misconceptions and provides systematic, science-based methods to help users accurately match equipment needs and enhance the overall efficiency and economy of pumping systems.

Magnetic drive centrifugal pumps are seal-less centrifugal pumps that achieve power transmission through a magnetic coupling. Their core feature is the elimination of traditional mechanical seals, completely avoiding fluid leakage risks. They are suitable for conveying flammable, explosive, toxic, harmful, highly corrosive, or high-purity liquid media. Widely used in industries with strict leakage control requirements, such as chemical, pharmaceutical, semiconductor, environmental protection, and new energy sectors.

With the gradual recovery of the global economy, multiple industries such as manufacturing, energy development, food processing, and water treatment have ushered in a new round of growth opportunities. Particularly in major economies such as Asia, North America, and Europe, the accelerated advancement of infrastructure construction, the continuous deepening of green energy transformation, and the rapid popularization of intelligent manufacturing technologies have all placed higher demands on industrial equipment.

Centrifugal pumps play a vital role in the food industry, from raw material processing to final product packaging. Thanks to their high efficiency and versatility, they are widely used to handle various fluids — including juices, milk, and sauces containing fine particles.