Helical Rotor Pump

Helical Rotor Pumps are a variety of Positive Displacement Pumps. They consist of a helical rotor and a helix rubber stator. The pumps operate with the help of the movement of the rotor inside the stator, which helps to transfer the liquid from the suction end to the discharge end of the pumps. The flow of the liquid is usually directly proportionate to the pumping speed. But these pumps are capable of creating high pressures at dismal speed.

Helical Roto Pumps are non-shearing in nature, and efficiently maintain the quality and hygiene of the products while transporting them. They are suitable to transfer both liquids and semi-liquids. They are actively used in a number of industries such as like pharmaceuticals, industrial waste water, agriculture and the food industry to transfer meat chunks, yeasty beer, fruits and other such items.

Pumping Principle

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.

Features & Benefits

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.