HDM. Heavy Duty Mining.
Designed for a longer life.
The challenge.
The use of submersible motor pumps for large volumes or at very large depths is associated with extreme loads on the unit. The higher the pump capacity, the stronger the axial thrust exerted on the pump, the motor and its thrust bearing. The outcome: Overloading and increased risk of failure.
The solution.
HDM - Heavy Duty Mining. Two pumps are arranged on top of each other rotating in
opposite directions and driven by a continuous pump shaft. The division of work between the two pumps provides complete compensation of axial thrust, thus solving the problems of forces acting on the unit and of the load on the thrust bearing. At the same time, the flow and suction velocity outside the pump is reduced by 50 %. This is more gentle on the well walls around the intake openings and minimises the intake of abrasive substances.
The result.
Besides the technical advantages -- complete compensation of axial thrust, 50 % lower
flow velocity and smaller-diameter impellers -- HDM also provides economic benefits:
maximum operational reliability, minimum wear and extremely long service life, which
can quite often exceed 20 years. Paired with the ideal drive - the ANDRITZ Ritz highperformance submersible motor - an unbeatable team!
Custom-tailored solutions.
Each ANDRITZ Ritz submersible motor pump with HDM technology is a custom-made
item. It is individually configured to suit your requirements.
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