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What is a Vortex Pump?

Learn about the mechanics behind vortex pumps and how they compare to the EDDY Pump.

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While similar in operation, there are some distinct differences between the EDDY Pump and Vortex Pumps that one should be aware of if looking for new pumping equipment.

See the video below to discover how the EDDY Pump is more efficient than vortex pumps when it comes to pumping high solids.

Mechanics of the Vortex Pump

Vortex pumps are based on the principle of creating a vortex flow with a recessed impeller that is positioned away from the path of the liquid. It creates circular churning motion around an axis that creates suction for the fluid to flow into the volute and out through discharge. Vortex motion may or may not be created by pressure differences of a fluid-solid mixture.

To create an efficient flow with the suspended particles, it is essential to generate a sufficiently powerful vortex to induce suction of the solid particles. This requires a very powerful pumping action with high horsepower. Vortex formations are dependent on fluid properties like density and viscosity. The rotors are also recessed for solids clearance, although at some cost to the pump efficiency.

Mechanics of the EDDY Pump

Eddy Pump is based on the principle of Tornado Motion of liquid as a synchronized swirling column along the center of intake pipe that induces agitated mixing of solid particles with liquid, creating suction strong enough for solid particles to travel upwards into the volute and generating pressure differential for desired discharge. The eddy current is caused by the pressure differential caused by the rotor and strengthened by turbulent flow patterns in the volute and suction tube.

Eddy currents are reinforced by the presence of solid particles which increase the inertial forces in the fluid. The formation of eddy depends on the suspended solid particles that causes suction. Unlike vortex pumps, the rotor directly drives the fluid through the pump with no slip. The Eddy Pump uses the movement of particles and the wake induced from these solid particles to generate Eddy Current and induce suction.



Conclusion – EDDY Pump is More Efficient

Hence, efficiency is 7-10% better than traditional vortex pumps, with respect to horsepower. The Eddy Current generated by the pump ensures steady movement of the mixture that leads to excellent non-clumping capabilities and the power to pump a very high concentration of solids, up to 70% by weight, as well as highly viscous fluids. Over long dredging and pumping jobs, the reduced maintenance and clogging combined with an overall higher efficiency means cost savings for your project.

Why Pump Efficiency Matters

Depending on the amount of time per day the pump will be running, pump efficiency could have huge ramifications on the overall cost of operation. Pump efficiency is defined as the ratio power actually gained by the fluid to the shaft power supplied. Choosing a pump that is 10% more efficient will save large amounts of electricity costs over the life cycle of the pump. Combine this higher efficiency with far fewer maintenance costs and the EDDY Pump benefits quickly become apparent.

Advantages of the EDDY Pump

  • EDDY Pump has better efficiency over vortex pumps. 
  • Non-Clog Pump Design – The EDDY Pump’s open rotor design with high tolerances allow anything that will go into the intake to be passed through the discharge without issues. This translates to a significant amount of solids and debris that passes through without clogging the pump.
  • High Solids Handling – Able to pump up to 70% solids
  • High Viscosity and Specific Gravity Handling
  • High Abrasives Handling – Ultra recessed rotor creates eddy current that keeps abrasive material away from critical ware pump components
  • No Critical Tolerances – The tolerance between the rotor and the volute easily allows the passage of a man’s arm, while the tolerance in a centrifugal pump is significantly less. In a 2-inch to 10-inch EDDY Pump the tolerance ranges from 1-9 inches.
  • Low Maintenance
  • Minimal Downtime
  • Low Ownership Costs

Order or Get Selection Help

Let our sales or engineering support help in your slurry pump and dredge equipment selection. Call (619) 258-7020

Why EDDY Pumps Are Better – Highlights

This video shows how the EDDY Pump beats traditional centrifugal pumps.