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Difference Between Single and Twin Screw Pump

Positive displacement pumps known as screw pumps feature a set of screws that rotate 360 degrees inside a casing. They go by the name "water screw pumps." In addition, because of their higher suction powers and affordable maintenance for the same speed range, they are acknowledged as the most dependable pump for a variety of tasks. The most recent blog will provide information about various screw pumps.


What varieties of screw pumps are there?

There are many different types of screw pumps on the market. Brief descriptions of most screw pump types are provided below:

  • One Screw Pumps
  • Two Screw Pumps
  • Three Screw Pumps
  • Four Screw Pumps
  • Five Screw Pumps

Single Screw Pump

Screw pumps also go by the titles PC pumps, worm pumps, single cavity pumps, and progressive cavity pumps. Since the rotor of these pumps is not formed like a screw but rather like a bent round shaft, they are often not thought to belong to the screw-pump family.

These single screw pumps have reversible motion. They run on the idea of positive displacement. They consist of a single spiral metal rotor and two spiral elastomer stators. These pumps are suitable for liquids that need a steady, uninterrupted flow.

One screw pump is renowned for their powerful suction. They have many different uses, including in the fields of transportation, oil and gas, paint, sewage treatment, papers, ceramics, chemicals, and so forth. These pumps can handle food, bilge water, sludge, sewage, and other abrasive and non-abrasive fluids with or without solid components (ketchup, yeast, gelatine, etc.). These screw pumps are rather affordable. They don't clog either.

Twin Screw Pump

These kinds of pumps also referred to as twin-screw pumps or double-screw pumps, are frequently employed in high-power applications like heavy oil tube transfer. The motor turns the screws in the pumps, and timing gears are frequently employed to turn the next screw.

These revolving, self-priming screw pumps are also available. These pumps are employed in the food, energy, maritime, and petrochemical industries because of their superior performance. The two screw pumps have the qualities listed below.

  • They can work at different speeds.
  • They can handle a large volume of fluids and viscosities.
  • They have a low NPSH requirement and can run dry.
  • They have a low liquid shear and can tolerate pollution.
  • They are very trustworthy.

Summary

A positive displacement screw pump is a rotary pump that rotates while dispensing a predetermined volume of fluid. Based on the number of screws, there are several types of screw pumps, ranging from those with one to five screws.

Screw pumps can be one-screw pumps or progressive cavity pumps. These pumps are not categorized as Screw Pumps since their rotors are made to resemble twisted round shafts rather than regular screws. Double screw pumps, commonly referred to as two screw pumps, are the most typical kind used in high-power applications.

Thus, screw pump types are the main topic here. These pumps can sometimes be selected based on single suction, while other times, double suction is selected. We tried to explain the different types of screw pumps in a straightforward manner. However, why not chat with one of our expert teams directly if you have any questions concerning these pump types? Please feel free to get in touch with Risansi Industries Ltd. before leaving a question.

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