Patented suction shoe technology and a new ball bearing design provide engineers with more options.
Fluid handling solutions can often be found in the designs of miniature pumps and systems for OEM and industrial applications. Below are descriptions of two new pumps and the benefits they can yield.
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The patented design of a suction shoe gear pump
• A new suction shoe gear pump design has been engineered to maintain high volumetric efficiency even at elevated differential pressures. This suction shoe technology is featured in Series 180, Series 200, and Series 220 pumps. It self-compensates for wear, resulting in near zero slip for more accurate continuous metering requirements. Its patented technology uses a pressure-loaded suction shoe around internal gears. The discharge pressure keeps the suction shoe seated tightly on top of the gears, which prevents flow from decreasing at higher outlet pressures. This action allows the pump to self-compensate for wear and thermal expansion, providing better performance. In addition, the design uses a reduced number of parts to minimize downtime and extend pump life.
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The open ball bearing design and gear construction of the Series 5500 gear pump
• A new ball bearing gear pump can handle aggressive heat transfer fluid applications. An addition to the Series 5500 gear pump line, it combines standard magnetic drive and cavity-style technology with an innovative ball bearing design. The Series 5500 ball bearing pump comes in a compact size and promises quiet operation. Its maximum performance when pumping a dielectric fluid is 21 L/min at 1,750 rpm and 45 psi. Optional features, configurations, and chemically resistant materials are available. Designed specifically for dielectric fluids such as Fluorinert, the pump includes an open ball bearing that stabilizes the position of the gears and, thus, minimizes friction. With less friction, the pump is subjected to less wear and service life is extended. Less friction also eliminates material shedding and permits clean, pulseless fluid delivery. In addition, the design allows the dielectric fluid to be pumped through the open ball bearings to provide longer bearing life and smooth rotational operation. A magnetic drive and O-ring seals keep the fluid securely inside the pump for leak-free operation.
More information is available by contacting Micropump Inc., 1402 N.E. 136th Ave., Vancouver, WA 98684 or calling (360) 253-2008.
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