When to Use Progressive Cavity Pump

A progressing cavity pump is a positive displacement pump using a helical 'worm' rotor and stator assembly to create temporary chambers to draw fluid into, which 'development' thru the pump ensuing in the liquid being expelled via the release port. A standard progressing cavity pump features a suction inlet that feeds into an elongated casing. Inside this casing sits a helical 'worm' rotor and stator assembly. The rotor helix is shaped offset to the stator developing hollow space areas within the organization formed with the aid of temporary seals as the rotor contacts the floor of the stator. Because the rotor starts to move eccentrically, the cavities shape, draw within the product and are 'improved' alongside the meeting, and the product is expelled through the discharge port.

What functions do progressive cavity pumps serve? 

Progressive cavity pumps are used to pump fluids that cannot be handled by other commercial pumps. They usually serve the following functions. Pumping, dosing, and metering chemical purposes.

• Pumping shear-sensitive materials
• Pumping substances that comprise abrasive debris
• Pumping heavy or viscous fluids
• Pumping fluids in packages that require varied drift quotes

When to Use Progressive Cavity Pumps

Viscosity

A progressive cavity pump is used while the pumping utility is not appropriate to a centrifugal pump. One of the clearest examples of whilst to apply a modern cavity pump is whilst the liquid has a higher viscosity, or thickness, than water. Centrifugal pumps turn out to be very mechanical and volumetrically inefficient when the viscosity of the liquid goes up, which means the flow goes down and the strength intake is going up.

Various Flow

additionally, a progressive cavity pump is an ideal pump when the software calls for varied flow. A progressive cavity pump has a particular glide in step with the revolution of the pump. It's far consequently smooth to modify the pump flow by way of just honestly regulating the pumping pace. Modern pump pace controllers like variable frequency drives (VFDs) are well accepted for use with progressive cavity pumps for varying pump pace and flow control.

Suction Conditions

Any other proper instance of when to apply a progressive cavity pump is whilst the suction situations of the pumping packages aren't best. A revolutionary hollow space pump calls for a mile’s lower net high-quality suction head (NPSH) as compared to a centrifugal pump due to the fact the inner pump pace is decreased. A modern cavity pump can pump while the suction pressure is as little as 28" of mercury (hg), a centrifugal pump can't do that. A revolutionary hollow space pump will without difficulty fill and pump in hard programs when a centrifugal pump will not.

Separating Fluids

Progressive cavity pumps are ideal for applications wherein the liquid is shear touchy again due to a lower internal pace. An excellent example might be pumping oil and water mixtures to separation gadgets. The separation tool works a lot better whilst the oil droplets are large. A progressive cavity pump will now not exchange the oil droplets while a centrifugal pump will emulsify the oil and make the oil droplets very small and reduce the separation performance of the separator.

As you can see the progressive cavity pump is an ideal alternative to other pump designs for many tough applications. At Risansi Industries, the leading pump manufacturers in India, we stock many pump sizes and models at our facility. We have pump application engineers on hand waiting for your pumping applications. Please contact us.