Single-Screw Transfer Pump for Industrial Liquids A single-screw transfer pump is a highly efficient and reliable positive displacement pump designed for handling a wide range of industrial liquids, including viscous, abrasive, and shear-sensitive fluids. Its robust construction and precise operation make it suitable for industries such as chemical processing, food and beverage, oil and gas, wastewater treatment, and pharmaceuticals. Design and Working Principle The pump consists of a single helical rotor (screw) that rotates within a double-threaded stator made of elastomeric material. As the rotor turns, cavities form between the rotor and stator, moving the fluid axially from the suction side to the discharge side in a continuous, pulsation-free flow. This design ensures smooth, low-shear pumping, making it ideal for delicate or viscous liquids that could degrade under high turbulence. Key Features and Advantages 1. Versatility – Capable of handling fluids with varying viscosities, from thin solvents to thick slurries, as well as liquids containing solids or abrasives. 2. Self-Priming – The pump can evacuate air and prime itself without external assistance, reducing downtime. 3. Low Pulsation & Shear – The progressive cavity movement minimizes pressure fluctuations and shear stress, preserving fluid integrity. 4. High Efficiency – Maintains consistent flow rates even under varying pressure conditions, ensuring energy-efficient operation. 5. Easy Maintenance – The simple design with few moving parts allows for quick disassembly and servicing. Applications - Transferring oils, fuels, and lubricants in refineries. - Pumping viscous food products like syrups, pastes, and dairy. - Handling chemicals, acids, and solvents in processing plants. - Moving sludge, wastewater, and abrasive slurries in environmental applications. Material Options Components can be constructed from stainless steel, cast iron, or specialized alloys to resist corrosion and wear. The stator is often lined with durable elastomers (e.g., NBR, EPDM, or Viton) for compatibility with aggressive fluids. Conclusion The single-screw transfer pump is a versatile, low-maintenance solution for demanding industrial applications. Its ability to handle diverse fluids with minimal shear and pulsation makes it a preferred choice for industries requiring precise and reliable liquid transfer.