Gear Pumps That Operate More Efficiently, Improve Product Quality, Available For All Applications Worldwide

Gear pumps that operate more efficiently, improve product quality, available for all applications worldwide

02-Nov-16

Harmonizing the technologies of two world-renowned product lines, Nordson Corporation has created a new generation of gear pumps that provide up to 15% greater throughput without an increase in rpm and deliver a more consistent and stable polymer melt for enhanced product quality. The optimized pump design was introduced at K 2016, where it also highlighted the availability of a comprehensive range of these components with options that meet the needs of virtually all melt processing applications in all geographic regions.

BKG® BlueFlow™ gear pumps are a new-generation product range that improves upon well-known technologies developed separately by the Münster-based melt-filtration and gear pump business of Jan-Udo Kreyenborg, and by US-based Xaloy Corporation, both of which were acquired by Nordson in 2013 and 2012, respectively. Chief among the improvements are:
? More efficient melt delivery, which makes it possible to achieve up to 15% greater throughput without increasing pump rpm; or reduce rpm to lessen shear stress on the polymer without sacrificing throughput.
? Better sealing performance and more sealing options. The full range of sealing types are now available worldwide. In addition to air- and water-cooled systems, alternative designs with cooling fins are also available.
? Improved control over melt parameters. The new gear pumps include pressure and temperature sensors at both the inlet and the outlet sides, contributing to more consistent melt properties and improved quality.

“BKG BlueFlow gear pumps provide better melt delivery performance for all processes and are particularly valuable in operations involving technical polymers, optically clear products, or other high-specification applications where it is important to minimize shear stress,” said Sven Conrad, business unit director for melt delivery products. “In designing these new pumps, we have drawn from a unique combination of U.S. and German expertise that spans many decades.”

Besides providing improved performance, the new BKG BlueFlow design harmonizes options previously available separately in different parts of the world. The product range now includes three series: “EP” for standard extrusion; “MP” for processes involving frequent color changes or heat-sensitive polymers; and “RP” for discharge out of vessels and reactors where no vacuum is applied. Pumps are available for the full spectrum of contingencies, including pumping capacities, pressure rates, and heating methods. While pumps are designated as “US” and “EA” (for Europe and Asia) because of regional differences in connecting and sealing, they all have the same core components, such as bearings, shafts, and sealing options. The availability of “US” and “EA” versions makes it possible to install BKG BlueFlow gear pumps as drop-in replacements for existing pumps.
Taken together, the BKG BlueFlow range includes gear pumps for film, sheet, pipe, profile, fiber, compounding, recycling, polymerization, and hot melt applications. A wide range of pumping capacities or specific volumes are available, ranging from 33 to 3,201 cc/revolution, for throughput ranges up to 12,000 kg/hr. Each pump size comes with either electrical or fluid heating and with either US or EA connections. The gear pumps are for use with polymer viscosities from 2 to 20,000 Pas and at temperatures up to 350 °C. All specifications are in metric units.