Which component helps to manage excess heat in pump operations?

The lantern ring plays a crucial role in managing excess heat during pump operations, particularly in centrifugal pumps. It is positioned around the shaft in the stuffing box, allowing for the circulation of lubricant or cooling fluid. This helps reduce friction between the rotating shaft and the packing material, which can generate significant heat during operation. By facilitating better heat management and lubrication, the lantern ring helps maintain proper temperatures, thereby ensuring the efficient functioning and longevity of the pump.

While other components like the pump impeller and coupling have their own important functions, they do not specifically address the issue of heat management in the same way the lantern ring does. The impeller is primarily responsible for moving the fluid, and the coupling connects the pump to the motor, but neither has a direct impact on cooling. Additionally, the filter's main function is to remove contaminants from the fluid, not to manage heat. Thus, the lantern ring is essential for improving the operational stability and lifespan of the pump by effectively managing excess heat.