New chopper pump achieves excessive efficiency with out compromising on cutting performance

Problematic solids corresponding to sanitary towels, plastic luggage, textiles and wooden are being discovered more and more usually in wastewater. Pumping and sewage therapy plants are subsequently increasingly reaching their limits; units get clogged up and break down.
In occasions when low lifecycle prices are taking part in an ever more necessary function, HOMA Pumpenfabrik offers an energy efficient and reliable solution for areas the place a excessive supply head is required, however at the similar time, a various vary of solids is predicted: the Alligator chopper pump sequence. The newly developed OC impeller of the Alligator series permits efficient operation by way of a strong cutter system. Thanks to the usage of extremely sturdy chilled chrome forged iron, the main parts which might be topic to essentially the most stress perform reliably even with abrasive substances corresponding to sand. HOMA shall be presenting the new Alligator chopper pumps for the first time at IFAT 2022 in Munich.
“The lowest attainable lifecycle prices are becoming more and more essential 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 attain high delivery heads with nice effectivity.” With its new Alligator chopper pump sequence, which may also be obtainable as an explosion-proof version, HOMA has developed a very environment friendly response to this demand.
Cutter system shreds all solids with high efficiency

“Our aim was to achieve excessive supply pressures within the medium circulate fee vary,” stories Konstantin Pörsch. Without forfeiting pump rate, the improved efficiency meant that a smaller, cheaper and more energy saving motor than in other pumps in the identical operating vary was sufficient. To obtain this, HOMA developed a new cutter system that successfully shreds and removes large portions of diverse solids such as tear-resistant hygiene wipes, plastic bags and wood, which additionally get into the wastewater by way of floor water. The specially designed impeller has integrated cutters and a sharp-edged radius of 10 mm to the wear plate, which can be geared up with its personal cutter. This design allows the two central components to work collectively to catch solids, break them down and in the end remove them from the suction space via built-in grooves within the put on plate.
To enable larger effectivity without compromising on chopping performance, the blades of the impeller also curve strongly backwards. As a result, within the 50 Hz model, a flow fee of up to a hundred thirty m³/h and a delivery head of up to 57 m may be achieved with power consumption of 5 to 12 kW. In the 60 Hz version, with power consumption of eight to 20 kW, a flow rate of as much as one hundred forty m³/h and a supply head of as much as 82 m are possible. The suction cowl mounted on the pump housing may also be used to regulate the chopping gap between the impeller and the damage plate with the help of six set screws. “The power of our new Alligator series, which is on the market for moist nicely installation as well as dry installation, is its nice effectivity and efficient cutter system, coupled with a long service life,” adds Konstantin Pörsch.
Low lifecycle costs because of wear-resistant design

In order to realize not only the greatest possible efficiency values in the working vary required for these sorts of wastewater applications, but also to reduce lifecycle costs total, HOMA attaches great significance to low-maintenance operation in addition to effectivity. The impeller and wear plate, that are the components topic to essentially the most stress, are made from extraordinarily durable chilled chrome cast iron, which withstands even abrasive substances corresponding to sand in the pumped medium. In addition, the hydraulics have been optimally designed for the operating range using computational fluid dynamics (CFD) to extend efficiency and to get rid of any possibility of solids increase, which can negatively influence efficiency and lead to pricey pump failures. “With เครื่องมือวัดความดัน developed cutter system, the Alligator pumps can effectively break down all solids in the waste water and transport them away, saving each power and upkeep prices thanks to their high effectivity and wear-resistant materials,” Konstantin Pörsch sums up. “This makes them particularly suitable for waste water purposes that require excessive supply pressure, but on the identical time should cope with many different kinds of solids.”

HOMA might be presenting the brand new Alligator chopper pump series for the primary time at IFAT 2022 in Munich. This and different improvements, similar to the maintenance 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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