<![CDATA[Rotary lobe pumps are a type of positive displacement pump widely used in the food, beverage, pharmaceutical, and chemical industries due to their ability to efficiently handle high-viscosity fluids. One of the critical components of this pump is the mechanical seal, which functions to prevent fluid leakage during operation. At the research site, the SPXFLOW HL 0670 sanitary lobe pump frequently experienced mechanical seal failures characterized by cracking of the carbon material, resulting in leakage, downtime, and increased maintenance and operational costs. The results of this study indicate that the primary causes of mechanical seal failure were the brittle nature of the carbon material, uneven pressure distribution, dry-running conditions, and unstable fluid pressure. To address these issues, a redesign was carried out by replacing the full-carbon material with a combination of tungsten carbide for the seal face and stainless steel SS 316 for the seal body. This modification was intended to improve the component's strength, wear resistance, and corrosion resistance. The findings demonstrate that the redesigned mechanical seal significantly improved the reliability of the sealing system, reduced leakage and downtime, and lowered maintenance and operational costs. Therefore, the redesign of the mechanical seal for the SPXFLOW HL 0670 lobe pump proved to be an effective solution for enhancing pump performance and supporting a more efficient and sustainable production process.]]>
Copyrights © 2026
