New chopper pump achieves high efficiency without compromising on cutting performance

Problematic solids such as sanitary towels, plastic bags, textiles and wood are being found more and more often in wastewater. Pumping and sewage remedy crops are due to this fact increasingly reaching their limits; models get clogged up and break down.
In occasions when low lifecycle prices are playing an ever more essential role, HOMA Pumpenfabrik offers an energy environment friendly and dependable answer for areas where a excessive supply head is required, but at the similar time, a various vary of solids is anticipated: the Alligator chopper pump series. The newly developed OC impeller of the Alligator collection enables effective operation by way of a robust cutter system. Thanks to using highly sturdy chilled chrome cast iron, the principle components which would possibly be topic to probably the most stress perform reliably even with abrasive substances similar to sand. HOMA will be presenting the new Alligator chopper pumps for the primary time at IFAT 2022 in Munich.
“The lowest possible lifecycle prices are becoming more and more important in water and wastewater functions,” explains Konstantin Pörsch, Project Manager within the Design & Development department at HOMA Pumpenfabrik GmbH. “There is a growing demand for energy saving and reliable pumps that reach high delivery heads with nice efficiency.” With its new Alligator chopper pump collection, which will also be obtainable as an explosion-proof version, HOMA has developed a very efficient response to this demand.
Cutter system shreds all solids with high effectivity

“Our aim was to realize excessive supply pressures in the medium flow fee range,” reports Konstantin Pörsch. Without forfeiting pump fee, the improved effectivity meant that a smaller, cheaper and more power saving motor than in different pumps in the same operating vary was sufficient. To achieve this, HOMA developed a new cutter system that successfully shreds and removes massive quantities of diverse solids corresponding to tear-resistant hygiene wipes, plastic baggage and wooden, which also get into the wastewater via surface water. The specially designed impeller has integrated cutters and a sharp-edged radius of 10 mm to the wear plate, which can additionally be geared up with its own cutter. เพรสเชอร์เกจ allows the two central elements to work together to catch solids, break them down and ultimately remove them from the suction space through built-in grooves in the wear plate.
To enable greater effectivity without compromising on chopping efficiency, the blades of the impeller additionally curve strongly backwards. As a outcome, within the 50 Hz model, a flow rate of as a lot as one hundred thirty m³/h and a delivery head of up to 57 m could be achieved with energy consumption of 5 to 12 kW. In the 60 Hz model, with power consumption of 8 to twenty kW, a flow price of up to 140 m³/h and a delivery head of up to eighty two m are potential. The suction cover mounted on the pump housing may also be used to adjust the cutting gap between the impeller and the wear plate with the assist of six set screws. “The strength of our new Alligator sequence, which is available for wet nicely installation as properly as dry set up, is its great effectivity and efficient cutter system, coupled with a long service life,” adds Konstantin Pörsch.
Low lifecycle costs due to wear-resistant design

In order to attain not only the absolute best efficiency values within the working vary required for these kinds of wastewater applications, but additionally to reduce lifecycle prices overall, HOMA attaches nice importance to low-maintenance operation in addition to efficiency. The impeller and put on plate, that are the elements topic to the most stress, are made from extraordinarily durable chilled chrome cast iron, which withstands even abrasive substances similar to sand in the pumped medium. In addition, the hydraulics were optimally designed for the operating range utilizing computational fluid dynamics (CFD) to increase effectivity and to eliminate any possibility of solids increase, which might negatively impact performance and lead to 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 both vitality and upkeep costs because of their high efficiency and wear-resistant materials,” Konstantin Pörsch sums up. “This makes them notably appropriate for waste water functions that require high delivery pressure, however on the same time have to deal with many different sorts of solids.”

HOMA will be presenting the brand new Alligator chopper pump sequence for the primary time at IFAT 2022 in Munich. This and different improvements, such as the maintenance slide with sliding motor mount, will be explained and demonstrated by the HOMA sales team in Hall B1 at Stand 429/528.

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