In most conventional pump designs, the impeller is typically secured using a set screw, bolt, or by threading it directly onto the shaft. Some manufacturers even employ a press fit, which can make disassembly and rebuilding almost impossible. These fixed impeller designs often lead to issues with axial thrust and overall fit within the pump, potentially reducing efficiency and increasing wear and tear over time.
MTH Pumps takes a different approach by utilizing a free-floating impeller positioned between the casing walls and the motor bracket. This innovative design allows the impeller to self-adjust, accommodating shifts in pressure and temperature during operation. As the pump operates and experiences sudden changes in fluid pressure or temperature, the free-floating impeller can move slightly to maintain optimal positioning and alignment.
This self-adjusting feature of the free-floating impeller provides several advantages. Firstly, it minimizes axial thrust issues, which can otherwise lead to premature bearing wear and failure. Secondly, the improved fit and alignment of the impeller reduce mechanical stress on the pump components, enhancing overall durability and efficiency. Additionally, the self-adjusting nature of the impeller helps maintain consistent pump performance even under varying operating conditions, ensuring reliable and efficient fluid handling.
By adopting a free-floating impeller design, MTH Pumps not only enhances the longevity and reliability of their regenerative turbine pumps but also simplifies maintenance and rebuilding processes. The ease of disassembly without the need for special tools or techniques means that these pumps are easier to service, reducing downtime and maintenance costs.
Thank you for reading this article. If you enjoyed it, please let me know. Stay tuned next week as we explore the good Net Positive Suction Head (NPSH) characteristics of regenerative turbine pumps.
MTH Pumps is a “Made-in-the-USA” manufacturer since 1965, that specializes in high pressure, low flow regenerative turbine pumps. Our Pumps produce as little as 5 PSI up to 1,000 PSI and anywhere from a ½ gallon to 150 gallons per minute. They are available in rugged, cast construction iron, bronze, and stainless-steel materials with a variety of sealing options. We have both horizontal and vertical models with a number of drive options including AC / DC volt motors or pedestal mountings. Every pump is 100% tested before it leaves our facility. MTH is an ISO certified company in a state-of-the-art, quality driven factory in Plano, Illinois. Please see our products we offer at www.mthpumps.com or call us, 630-552-4115.
