Screw pumps are surprisingly useful

screw pump
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Rotary screw pumps | Plant Engineering
A 4-p brochure describes the 3D series rotary, positive displacement three-screw pump line. Performance capabilities, op...

The area of ​​the chemical plant that I am in charge of only handles low-viscosity liquids and mostly uses centrifugal pumps.

If you work within this range, you will not have any choice other than centrifugal.

The rotary screw pump is one such example.

for high viscosity

Screw pumps can be used for high-viscosity liquids. High-viscosity liquids may seem special, but they occur in a fairly wide range of liquids, including resins, wastewater, and food.

People who are used to working with only low viscosity liquids will likely have trouble if they encounter a situation where they need to handle high viscosity liquid.

In such cases, a screw pump can be one solution.

Although they are handled differently from centrifugal types and require more maintenance, they are still reliable.

for high slurry

Screw pumps are easy to use with slurries.

Other pumps cannot be used with high-concentration slurries.

There is a general need to increase the concentration of slurries in drainage and other applications.

High pressure

Be careful because screw pumps generate high pressure.

It is natural that high pressure will be generated when pumping high viscosity or high concentration liquids.

Make sure that the piping, etc., can withstand pressure.

Low Flow

Screw pumps have low flow rates.

This is only natural when pumping high viscosity, high concentration liquids.

Even without memorizing the terms high pressure and low flow rate, this conclusion is obvious if you think about pressure loss.