Rotary lobe pumps can be found in a wide variety of industries. Their popularity comes from a number of attractive properties such as reliability, high efficiency, handling of solids, and CIP (Clean-In-Place) sanitary qualities.
They are similar to external gear pumps. Rotary lobe pumps operate in the same fashion, just the difference is: they have lobes instead of gears to move fluid through the pump. Different types of lobes are attached depending on the application. These are: single, bi-wing, tri-lobe, and multi-lobe. Lobe pumps are known to handle low, medium and high viscosity media, and often used where gentle, sanitary processing is a requirement.
Application
Rotary lobe pumps have been designed for use in a wide range of applications within the food, brewing, dairy, pharmaceutical and chemical industries. The smooth, low shear pumping action is ideal for products such as aerated mixtures, creams, emulsions, gels, delicate cells and organic solids in suspension. The pumps are compact in size and highly efficient,capable of flow rates up to 106 m³/h and pressures up to 20 bar. Some of the new improved modular design provides for greater application flexibility and cost effective easy maintenance.
Standard design
The concept of rotary lobe pump design has a robust cast iron gearbox that provides maximum shaft rigidity and easy oil seal replacement. This gives the flexibility of mounting a range of liquids with the inlet and outlet ports in either a vertical or horizontal plane by interchanging the foot position. A quality epoxy paint system is used on the gearbox exterior for optimum protection against natural and corrosive elements.
Pumphead construction:
The standard specifications of rotary lobe pumps have sanitary designs with full bore inlet and outlet ports to International Standards. Enlarged diameter and rectangular ports are also available to handle high viscosity products. Some of the models have tri-lobe rotors with the option of attaching bi-lobe for handling fluids containing large delicate solids.
How the lobes work?
Two lobes are driven by external timing gears, which rotate independently to generate flow. Similar to the external gear pumps, the lobes rotate against each other. When the fluid flows into the pump, the lobes hold it as they rotate against the casing before the fluid is forced out from the discharge port.
When you are in need of rotary lobe pumps contact a pump provider in Wicklow who provides a range of rotary lobe pumps, so that you can pick the right model based on the requirement.
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