Helical Rotor Pumps are a type of Positive Displacement Pumps. They are robust and efficient pumps which consist of a helical rotor and a helix rubber stator. The rotor circulates inside the stator to form cavities and the liquid is pumped through these cavities. These pumps have high suction lift capability and can prime on their own.
Helical Rotor Pumps are non-shearing pumps, and can transfer a variety of liquids without causing any change or harm to their quality. Moreover, these pumps are considered to cab be used for semi hygienic food and beverages applications such as butter, yeast and even meat chunks. Other industries that use these kinds of pumps in their day-to-day applications including oil & gas, marine, paper, paint, biogas, agriculture and waste water treatment etc.
Progressive Cavity Pumping Principle
The pumping element comprises of a precision machined single external helix metallic rotor, and a double internal helix elastomer stator. Due to the special profile of the rotor and stator set, a sealing line is formed along the axis of the rotor which is maintained at both static and dynamic conditions. As the rotor turns within the stator, these cavities progress from the suction to the discharge end of the pump carrying the fluid.
Positive Displacement
Because of single rotating element, progressive cavities are generated which deliver a uniform, metered and non-pulsating flow. The developed head is independent of the rotational speed, where as the capacity is proportionate to the speed.
Self priming
Inherently self-priming, the pumps can work on snore and do not require a foot valve.
Non-Clogging
Can handle solid in suspension or media containing a high percentage of solids.
Low NPSH Requirement
Suction lift capabilities of up to 9.5mWc and effective in high vacuum conditions.
Low Internal Velocity
Minimum degradation of shear-sensitive media, and can also handle highly viscous materials having pseudo-plastic characteristics.
Reversible
Due to the reversible rotation capabilities, Progressive Cavity Pumps can perform with equal efficiency in either direction.
Silent Running
Rotors turn inside a resilient stator and thus generate little noise.
Separate Bearing Housing
Fluids can be pumped without no contamination.
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