#hopperpump

With a maximum flow rate of 1,000 l/min, differential pressure up to 24 bar, temperature capability up to 135 °C, solids content up to 85 percent, dry substance content up to 35 percent and viscosity handling up to 850,000 mPas, the AE‑RD/RE Hopper Pump is designed for some of the most challenging media encountered in modern plants. At the heart of the value proposition is an optimized anti-bridging auger combined with vertical inlet hopper walls, which prevents bridge building and secures a consistent material flow into the pump. This design eliminates the need for separately driven bridge-breaking devices, lowers operating and maintenance costs and allows the pump hopper to be used as a storage tank by forming a sludge column directly in the hopper. A flow‑optimized stuffing box between hopper and rotor/stator with optimum overload of the feeding screw achieves almost 100 percent filling of the conveying chambers, even under conditions with a risk of partial dry running, which reduces wear on the rotor and stator and cuts downtime and spare-parts consumption. These technical capabilities, combined with flexible hopper design and adjustable hopper length, allow the pump to be tailored to a wide range of feed situations while ensuring consistent filling behavior and reliable operation. www.pumps.circor.com/allweiler

To solve that problem Seepex is now introducing the patented Drive Joint Access (DJA) technology on some of their open hopper pump ranges, significantly reducing maintenance times and costs. Between feed hopper and lantern a detachable joint casing is mounted on rollers, which allows access to the drive-side joint. Mechanical seal, plug-in shaft and drive can be quickly installed or removed on site - without removing the feed hopper, the screw conveyor or the rotor-side joint. "This simplifies the work and reduces maintenance and downtime from three to four days to less than one day, thus significantly reducing costs. A regular, simple and quick check, for preventive maintenance of drive side components whilst pump is in situ is now also possible at any time ", says Simon Lambert, Global Industry Manager Environmental at Seepex. Depending on the range it is also possible to replace the ribbon screw without dismantling the feed hopper and compression zone. With DJA, the pump can now be dismantled from drive-side for the first time. The removal of components and the use of heavy hoists are a thing of the past: "We are proud to introduce DJA as a new solution to make the operation and maintenance of our pumps as easy as possible," explains Dr. Christian Hansen, Vice President and CTO of Seepex. "The key to our success lies in our partnership with our customers. For them, we develop solutions that optimize their facilities, increase productivity and reduce operating costs. " Read the full article