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Problematic solids such as sanitary towels, plastic luggage, textiles and wood are being found increasingly often in wastewater. Pumping and sewage treatment vegetation are due to this fact increasingly reaching their limits; items get clogged up and break down.
In occasions when low lifecycle costs are enjoying an ever extra essential position, HOMA Pumpenfabrik presents an power efficient and reliable answer for areas the place a excessive delivery head is required, however at the identical time, a diverse range of solids is predicted: the Alligator chopper pump series. The newly developed OC impeller of the Alligator sequence permits efficient operation via a robust cutter system. Thanks to the utilization of extremely durable chilled chrome cast iron, the primary elements which may be topic to probably the most stress carry out reliably even with abrasive substances corresponding to sand. HOMA might be presenting the new Alligator chopper pumps for the first time at IFAT 2022 in Munich.
“The lowest potential lifecycle prices are becoming increasingly important in water and wastewater applications,” explains Konstantin Pörsch, Project Manager within the Design & Development department at HOMA Pumpenfabrik GmbH. “There is a growing demand for vitality saving and reliable pumps that attain high supply heads with nice efficiency.” With its new Alligator chopper pump collection, which will also be out there as an explosion-proof version, HOMA has developed a very efficient response to this demand.
Cutter system shreds all solids with high efficiency

“Our objective was to attain excessive delivery pressures within the medium flow price range,” stories Konstantin Pörsch. Without forfeiting pump rate, the improved efficiency meant that a smaller, cheaper and more vitality saving motor than in different pumps in the identical operating vary was sufficient. To obtain this, HOMA developed a model new cutter system that effectively shreds and removes massive portions of diverse solids similar to tear-resistant hygiene wipes, plastic luggage and wood, which additionally get into the wastewater via surface water. The specifically designed impeller has integrated cutters and a sharp-edged radius of 10 mm to the wear and tear plate, which can additionally be equipped with its own cutter. This design permits the 2 central parts to work collectively to catch solids, break them down and in the end remove them from the suction area via integrated grooves within the put on plate.
To allow larger effectivity without compromising on cutting performance, the blades of the impeller also curve strongly backwards. As a result, in the 50 Hz version, a move rate of up to 130 m³/h and a supply head of up to 57 m may be achieved with power consumption of 5 to 12 kW. In the 60 Hz model, with power consumption of 8 to twenty kW, a circulate price of as a lot as a hundred and forty m³/h and a delivery head of up to 82 m are possible. The suction cover mounted on the pump housing can also be used to regulate the chopping hole between the impeller and the damage plate with the assist of six set screws. “The strength of our new Alligator collection, which is on the market for wet nicely set up in addition to dry installation, is its nice efficiency and effective cutter system, coupled with a long service life,” provides Konstantin Pörsch.
diaphragm seal to wear-resistant design

In order to attain not solely the finest possible effectivity values in the working range required for these kinds of wastewater purposes, but also to scale back lifecycle prices overall, HOMA attaches nice significance to low-maintenance operation in addition to effectivity. The impeller and wear plate, that are the components subject to essentially the most stress, are made of extraordinarily durable chilled chrome forged iron, which withstands even abrasive substances similar to sand in the pumped medium. In addition, the hydraulics had been optimally designed for the working range using computational fluid dynamics (CFD) to extend effectivity and to get rid of any chance of solids build up, which can negatively influence efficiency and result in expensive pump failures. “With the newly developed cutter system, the Alligator pumps can effectively break down all solids in the waste water and transport them away, saving each energy and upkeep costs because of their high efficiency and wear-resistant supplies,” Konstantin Pörsch sums up. “This makes them notably suitable for waste water purposes that require excessive supply pressure, but on the similar time need to take care of many various kinds of solids.”

HOMA shall be presenting the new Alligator chopper pump sequence for the primary time at IFAT 2022 in Munich. This and other improvements, such as the upkeep slide with sliding motor mount, shall be explained and demonstrated by the HOMA gross sales group in Hall B1 at Stand 429/528.
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