Single Screw Pump Manufacturers

Roto Pumps is a leading Single Screw Pumps manufacturer. This category of Positive Displacement Pumps is an ideal choice for application requiring smooth and non-pulsating flow of the liquid. Due to their high suction capability, these pumps are suited for a number of industries such as marine, paper, wastewater, biogas, explosives, mining, ceramic etc. These pumps are ideal for both abrasive and non-abrasive liquids, with and without solid elements including bilge, sludge, sewage water, bio-waste, molasses, melt, pulp etc., and even foods with high viscosity such as yeast, jelly, ketchup and many more. These pumps ensure almost silent functioning and are easy to maintain.

Single Screw Pumps work on the principle of positive displacement. These pumps constitute of a metallic rotor fitted inside two elastomer stators. Both rotors and stator are in helix shape design. As the rotor circulates inside the stators, cavities are formed. The liquid is lifted from the suction port of the pumps and it moves axially along the cavities. Then the liquid exits through the discharge end of the pump.

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.