New chopper pump achieves excessive effectivity without compromising on slicing efficiency

Problematic solids such as sanitary towels, plastic luggage, textiles and wood are being discovered more and more often in wastewater. Pumping and sewage therapy crops are therefore increasingly reaching their limits; units get clogged up and break down.
In occasions when low lifecycle prices are playing an ever more important position, HOMA Pumpenfabrik provides an vitality efficient and dependable answer for areas the place a high supply head is required, however on the same time, a various vary of solids is expected: the Alligator chopper pump collection. The newly developed OC impeller of the Alligator series enables efficient operation via a robust cutter system. Thanks to the use of highly durable chilled chrome cast iron, the principle parts that are subject to the most stress perform reliably even with abrasive substances such as sand. HOMA might be presenting the new Alligator chopper pumps for the primary time at IFAT 2022 in Munich.
“The lowest potential lifecycle costs are becoming more and more essential in water and wastewater purposes,” explains Konstantin Pörsch, Project Manager in the Design & Development department at HOMA Pumpenfabrik GmbH. “There is a growing demand for power saving and reliable pumps that reach high delivery heads with nice efficiency.” With its new Alligator chopper pump series, which may even be obtainable as an explosion-proof model, HOMA has developed a very environment friendly response to this demand.
Cutter system shreds all solids with excessive efficiency
“Our objective was to realize high delivery pressures in the medium flow fee vary,” reviews Konstantin Pörsch. Without forfeiting Crazy , the improved effectivity meant that a smaller, cheaper and more power saving motor than in different pumps in the identical operating vary was adequate. To obtain this, HOMA developed a model new cutter system that successfully shreds and removes large quantities of diverse solids similar to tear-resistant hygiene wipes, plastic bags and wood, which also get into the wastewater through floor water. The specifically designed impeller has integrated cutters and a sharp-edged radius of 10 mm to the damage plate, which can be equipped with its own cutter. This design permits the two central components to work together to catch solids, break them down and finally take away them from the suction space by way of built-in grooves within the wear plate.
To enable higher effectivity without compromising on slicing efficiency, the blades of the impeller additionally curve strongly backwards. As a end result, in the 50 Hz model, a flow price of as a lot as 130 m³/h and a delivery head of as a lot as fifty seven m may be achieved with power consumption of 5 to 12 kW. In the 60 Hz model, with power consumption of eight to twenty kW, a flow rate of up to a hundred and forty m³/h and a supply head of as a lot as 82 m are possible. The suction cowl mounted on the pump housing can be used to adjust the chopping hole between the impeller and the damage plate with the assist of six set screws. “The power of our new Alligator sequence, which is out there for moist well set up as nicely as dry set up, is its great efficiency and effective cutter system, coupled with a long service life,” adds Konstantin Pörsch.
Low lifecycle prices because of wear-resistant design
In order to realize not only the absolute best effectivity values within the working range required for these kinds of wastewater applications, but in addition to scale back lifecycle prices overall, HOMA attaches great significance to low-maintenance operation in addition to effectivity. The impeller and wear plate, that are the parts topic to the most stress, are manufactured from extremely durable chilled chrome cast iron, which withstands even abrasive substances such as sand in the pumped medium. In addition, the hydraulics have been optimally designed for the working vary using computational fluid dynamics (CFD) to increase effectivity and to get rid of any possibility of solids build up, which can negatively impression efficiency and result in costly pump failures. “With the newly developed cutter system, the Alligator pumps can successfully break down all solids in the waste water and transport them away, saving both power and upkeep costs thanks to their high efficiency and wear-resistant supplies,” Konstantin Pörsch sums up. “This makes them particularly appropriate for waste water applications that require high delivery strain, however at the same time should deal with many different kinds of solids.”
HOMA will be presenting the new Alligator chopper pump sequence for the first time at IFAT 2022 in Munich. This and other innovations, corresponding to the upkeep slide with sliding motor mount, might be defined and demonstrated by the HOMA gross sales staff in Hall B1 at Stand 429/528.
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