Everything You Need To Know About Screw Pumps

Screw pumps are among the most versatile, reliable, and robust pumps available in the market today. If you're evaluating whether a screw pump is right for your application, this article will help you understand their workings, types, applications, and both their advantages and disadvantages.

Are you interested in learning more about double screw pressing machine suppliers? Contact us today to secure an expert consultation!

What is a Screw Pump?

A screw pump is a positive displacement pump that employs two or more intermeshing screws to pressurize and move fluids through a system. The screws rotate on an axis to create positive displacement suction, thereby propelling the fluid from the inlet to the outlet. As the fluid moves through the system, its pressure increases before it is discharged. Screw pumps can handle both viscous and thinner, cleaner fluids.

Applications of Screw Pumps

Screw pumps are perfect for moving viscous and demanding fluids such as asphalt, oil, gas, and multi-phase liquids. Their high flow rates make them ideal for the manufacturing, food and beverage, wastewater, and mining industries. Single screw pumps, also known as progressive cavity pumps, are used for stormwater pumping, sewage inlet pumps, drainage pumping, and wastewater management.

Types of Screw Pumps

Single Screw Pumps

Single screw pumps, commonly referred to as progressive cavity pumps, utilize a rotor and stator instead of screws. The shaft in these pumps appears somewhat twisted, resembling a screw.

Twin Screw Pumps

Twin screw pumps use two intermeshing screws. Their efficient design ensures that the screws do not contact each other, which helps in extending their lifespan. These pumps are ideal for transfer applications due to their high head and high flow attributes.

Triple Screw Pumps

Triple screw pumps are often used for smaller pumping systems, such as lubrication operations. They use one driving screw interconnected with other screws to generate pressure and move the fluid. However, the downside is that the screws do not come into contact, limiting the pump's use to handling clean liquids only.

Four Screw Pumps

Four screw pumps essentially combine two twin screw pumps, each with two screws working in opposite directions. The liquid is absorbed through the suction port, divided evenly, and routed to both ends of the pump. The divided liquid flows toward the center and re-unites before being expelled. These pumps are often used for oil transport pipelines and multi-phase applications.

Advantages and Disadvantages of Screw Pumps

Screw pumps are highly versatile and suitable for various flow rates and pressures. They offer constant flow rates, controllable output, quiet operation, and low pulsation. They are also self-priming and have high volumetric efficiency. However, they can be expensive due to their complex rotating components and the high-quality materials used in their construction. Screw pumps can have low volumetric and mechanical efficiencies and are typically heavy and large, making them sensitive to changes in fluid viscosity.

If you are considering a screw pump for your application, contact Anderson Process today. We partner with reputable manufacturers such as Ampco Pumps, Blackmer, Gusher Pumps, Hayward Gordon, Roto Pumps, and several others.

For more information, please visit pneumatic oil filter.

Manufacturing & Testing

World leaders in manufacturing screw compressors. Today, Howden screw compressors provide high-integrity, low-maintenance solutions for liquid chilling, direct refrigeration, and gas compression in thousands of applications worldwide. Our rigorous testing standards ensure that we maintain the highest quality in the industry.

Tested in our Renfrew center, Scotland, we offer the industry’s largest and most versatile range of oil-injected and oil-free screw compressors.

• Site Area (m²): 65,000
• Factory Area (m²): 10,500
• Quality ISO 9001:2015
• Health & Safety ISO 45001:2018
• Environmental ISO 14001:2015
• 5 Test Beds

The Digitally Enabled Test Suite - Transforming Your Equipment Testing Experience

Equipment testing is an essential part of purchasing a Howden Compressor. Many customers travel to Renfrew to validate the performance and reliability of their product before it is shipped.

Remote Testing

The new test studio allows customers to witness equipment tests remotely. Equipped with live camera feeds and real-time data screens, customers can access testing information from any smart device with an internet connection. This remote testing option reduces travel requirements, saving time and costs.

Transforming the Test Experience with Augmented Reality

Augmented Reality (AR) technology provides a transformative test experience. Our Test Engineer conducts live tests wearing a Microsoft HoloLens device. The live video feed and augmented real-time data values offer customers a comprehensive view of both the test and its results on one screen.

If you want to learn more, please visit our website automatic screw press machine exporters.