New rotary lobe pump designs are challenging conventional wisdom, going a long way toward resolving typical customer pain points. One example is the NETZSCH TORNADO T2 rotary lobe pump, redesigned to improve performance, guarantee high reliability, durability, and ease of maintenance, as well as reduce total cost of ownership (TCO).
Traditional rotary lobe pumps use rubber-covered lobes that rotate inside a metal housing, often with bolted-in metal wear liners. Recently, NETZSCH engineers decided to reverse the construction, using steel lobes and rubber housing. They used this concept during design of the new TORNADO T2 rotary lobe pump. During the entire pumping cycle, only elastomer and metal component surfaces interface within the pump - eliminating the excess wear and heat generated from elastomer-to-elastomer contact that sometimes damages traditional rotary lobe pumps.
By using dissimilar materials for the static and dynamic pump head components, the elastomeric surfaces are subjected to lower dynamic loading, resulting in less plastic deformation and stress, reducing wear and extending operational life. The new design does not require O-rings or gaskets, resulting in a durable and robust construction, along with simplicity and ease of maintenance.
