What is the purpose of a lantern ring in pump systems?

The lantern ring serves a critical role in pump systems by providing cooling to the packing and shaft. In applications where pumps handle hot fluids or where friction can generate excess heat, the lantern ring allows for a flow of fluid around the packing. This flow not only helps maintain the appropriate temperature but also lubricates the packing material, extending its life and maintaining overall pump performance.

By channeling fluid effectively, the lantern ring minimizes wear and tear on components, reducing the risk of leaks and ensuring that the seal created by the packing remains effective. This is particularly important in preventing losses of the pumped fluid, which could lead to efficiency losses or environmental concerns. Therefore, the function of the lantern ring is vital in ensuring that the pump operates smoothly and reliably under varying conditions.