Centrifugal Slurry Pumps

Centrifugal slurry pumps are among the most common type of pumps found in industrial applications. A centrifugal pump contains one or more impellers that move fluid by rotation using centrifugal force. Not all centrifugal slurry pumps are the same. Many low-quality centrifugal pumps can only pump water. Their casing and impellers will only allow for this. The industrial centrifugal pump or the centrifugal slurry pumps are much more robust. They are built with heavy-duty materials that can withstand abrasive and corrosive materials. The main intent of a centrifugal slurry pump is to move solids and liquids. The durability of the centrifugal slurry pumps allows it to be used for a wide range of industries and are preferred for low viscosity liquids and high flow rates.

DAE Pumps provides a variety of centrifugal slurry pumps in multiple shapes and sizes. These industrial centrifugal pumps can process heavy abrasive solids and work through everything that would normally shut down other pumps. They are used for a variety of applications in mining, pulp & paper, agriculture, construction, oil & gas, agriculture, and many other industries. We offer dredge pumps, submersible slurry pumps, self-priming pumps, and flooded suction pumps for an extensive 

Flooded Suction Pumps
DAE Pumps Submersibles

Submersible Pumps

DAE Pumps offers a variety of options in submersible slurry pumps with multiple sizes and power choices to meet your specific application needs. Our Tampa and Galveston Series pumps handle the toughest jobs in mining, dewatering, municipal, marine, and other uses.

DAE Pumps Self-Priming MAX Series Portable Pump

Self-Priming Pumps

The DAE Pumps self-priming centrifugal slurry pumps outperform the conventional self-priming pump in dewatering and slurry pumping. We manufacture affordable heavy-duty and light-duty self-priming pumps that suction up debris with ease, ensuring hassle-free operation.

 

DAE Pumps Growler 3000

Dredge Pumps

Dredge pumps by DAE Pumps continuously pump large solids with little mechanical downtime. They are incredibly durable and powerful. Choose from cable-deployed dredge pumps, excavator dredge pumps, pontoon dredge pumps, and diver-operated dredges and pumps.

Flooded Suction Pumps

Flooded Suction Pumps

Get durable vertical and horizontal centrifugal flooded suction pumps with non-clogging impellers that offer flow rates of up to 10,000 PGM. With a Total Dynamic Head that reaches 400 feet, choose from multiple sizes between 1-inch to 16-inches. Find your flooded suction pump here!

Features of DAE Pumps Dredge Pumps

  • Capable of Pumping Wide Array of Materials
  • Large Selection of Pumps and Configurations
  • Pump Abrasive and Gritty Material with Ease
  • High Tolerance Between Impeller and Pump Casing, Allowing Larger Solids
  • Low Maintenance
Slurry Hose

Need Help Finding a Pump?

Call us at (760) 821-8112 or submit a request. A pump expert is available to help.

Centrifugal Slurry Pump Applications

DAE Pumps dredging equipment is ideal for a variety of applications, including dredging dams, ports, marinas, rivers, canals, lakes, ponds, and more. Ensuring water quality and capacity are essential in hydroelectric and water supply dams, making DAE Pumps dredge pumps perfect for removing excess sand and silt. Clearing sediment and contaminates from riverbeds, channels, canals, and oceans help restore safe navigation and shoreline formations, and dredging lakes and ponds clean and remove contaminants and tailing. As ocean currents move sediments, the seafloor slowly rises, lowering the depth of marinas and ports. Dredging ensures safe access for boats and other water vessels.

Centrifugal Pumps For Process Applications

Centrifugal pumps from DAE Pumps are perfectly suited for demanding process applications. Their heavy-duty construction ensures long-lasting performance in rugged conditions. The DAE Pumps knowledge and experience building top-of-the-line pumps make our centrifugal process pumps ideal in many markets and applications.

Pulp Paper Mix
Pulp Paper Mix

Centrifugal Pumps For Water/Wastewater Applications

The durable DAE Pumps centrifugal pumps provide a proven ability to handle a variety of applications in the water and wastewater industries. These reliable instruments are perfect solutions for pumping chemicals used to treat water, irrigation, fountains, and much more.

DAE Pumps Pumps For Agriculture
  • Fountains
  • Water Parks, Amusement Parks, & Zoos
  • Commercial Swimming Pools
  • HVAC Systems
  • Boilers
  • Dewatering
Water Park Pumps

I Need Help With Selecting a Pump?

For help selecting the most efficient pump for your project, call us at (760) 821-8112 or submit a request. Find the right pump size, volume, speed that you need. Get a FREE custom pump curve to ensure the right pump.

Motor & Engine Selection

The motor or engine on a pump is as important as the pump itself. It is the driving force that makes the pump go. DAE Pumps offer a variety of motor choices: electric, diesel, and hydraulic.

Our close-coupled electric motors reduce the stress on motor bearings with a short shaft overhang and fan-cooled. Our submersible electric motors come completely enclosed with the most trusted watertight O-ring seals. Diesel engines offer self-priming features and easy to maintain capabilities. Hydraulic motors are powered by HPU or hydraulic power units and provide the utmost in capability and performance.

Centrifugal Pump Trailer Option

Frames and skids hold the pump and motor together to make a complete unit. The frame provides stability for the placement of the pump and motor with the intent of a permanent install or seldom movement. The DAE Pumps trailer brings mobility to centrifugal slurry pumps. The whole unit, skid included, is mounted onto a trailer for mobile accessibility. Many industries use centrifugal pumps for performing multiple applications, and they move from one location to another quite frequently. The trailer provides a tremendous advantage of being on wheels.

DAE Pumps Self-Priming Pumps

How Centrifugal Pumps Work

Centrifugal pumps come in many shapes and sizes. There are two main parts to a centrifugal pump; the pump and the motor/engine. The electric motor or a diesel engine converts the energy it creates into mechanical energy. This mechanical energy drives the pump and moves the water. The centrifugal slurry pumps pull water and other materials in through the inlet and pushes it out through the outlet/discharge.

The electric motor and diesel engine work relatively similarly. A motor consists of a fan and protective casing mounted at the back. Inside the motor is the stator. The stator holds copper coils. Concentric to this is the rotor and shaft. The rotor rotates, and as it spins, so does the pump shaft. The shaft runs the entire length of the motor and into the pump where it connects to the pump’s impeller.

Centrifugal Pump Diagram

There are a couple of variations to a centrifugal pump. Some models of centrifugal pumps have a separate shaft for the pump and the motor. The connection between the separated shafts is called the coupling. These coupled pumps will contain a bearing house with bearings. The pump shaft then continues into the pump casing. As it enters the casing it passes through a gland, packing, and the stuffing box, which combined to form a seal. The shaft then connects to the impeller. The impeller imparts centrifugal force onto the fluid that makes it to move liquids through a pipe or hose. The impeller is in the pump casing. The casing contains and directs the flow of water as the impeller pulls it in through the suction inlet and pushes it out through the discharge outlet.

At the back of the motor, the fan connects to the shaft. The motor rotates the shaft and fan. The fan cools down the motor/engine, and it blows ambient air over the casing to dissipate unwanted heat. If the motor becomes too hot, the insulation on the coils inside the motor melts, causing the motor or engine to short circuit and destroy itself. The fins on the outside perimeter of the casing increase the surface area of the casing, which allows for removing more unwanted heat. The motor comes in either three-phase or single-phase configuration, depending on the application.

Inside the three-phase induction motor, there are three separate coils, which wind around the stator. Each coil set is connected to a different phase to reduce a rotating magnetic field. When AC or alternating current passes through each coil, the coil produces an electromagnetic field that changes in intensity, as well as polarity. The electrons passing through it change direction between forwards and backward. If each coil connects to a different phase, then the electrons will change direction between forwards and back at different times compared to the other phases. If this happens, then the magnetic field of each coil will change the intensity and polarity. In order to distribute the magnetic field properly, the coils are rotated 120 degrees from the previous phase and inserted into the stator of the motor casing, thus creates the effect of a rotating magnetic field.

Centrifugal Pump Parts

At the center of this stator are the rotor and shaft. The rotor is affected by the rotating magnetic field and forces it to auto-rotate. The rotor connects to the shaft, which runs from the fan to the impeller. When the rotor rotates, so does the impeller. By creating the rotating magnetic field within the motor, the rotor spins the shaft and the impeller.

At the pump casing, there is a channel for water to flow along, which is called the volute. The volute spirals around the perimeter of the pump casing to the outlet. This channel increases in diameter as it makes its way to the outlet. The shaft passes through the seals and into the pump casing, where it connects to the impeller.

There are many types of impellers, but most have backward curved veins, which will either be open, semi-open, or closed. These backward-curved veins do not push the water. The curves rotate with the outer edge moving in the direction of the expanding volute. These veins will provide the fluid with a smooth path for the water to flow.

Centrifugal Pump Impeller with Water Diagrams

As The Impeller Rotates, The Fluid Is Forced Outward To The Volute.

Liquid engulfs the impeller, and when it rotates, the fluid within the impeller also spins and is forced outward to the volute. As the fluid moves outwards, off of the impeller, it creates a region of low pressure that pulls more water in through the suction inlet.  The fluids enter the eye of the impeller and are trapped there between the blades. As the impeller rotates, it imparts kinetic energy or velocity onto the liquid. By the time the liquid reaches the edge of the impeller, it is moving at a very high speed. This high-speed liquid flows into the volute where it hits the wall of a pump casing. This impact converts the velocity into potential energy or pressure. More fluid follows behind this developing a flow.

The thickness of the impeller and the rotational speed affects the volume flow rate of the pump and the diameter of the impeller, and the rotational speed increases the pressure it can produce.

Centrifugal Pump Impeller Diagrams

Various Impeller Thicknesses

Have Questions?

For technical questions about our pumps, call us at (760) 821-8112 or submit a request. An engineer is available to help.

What is NPSH 

Net Positive Suction Pressure or NPSH is associated with pump suction. At the end of this acronym are two other letters NPSHR and NPSHA. The R is the required NPSH. Each pump tests for this value. At DAE Pumps, we provide a pump operation chart with all our specs. The R-value is a warning or danger point. As the fluid enters the pump and flows into the impeller’s eye, it experiences a lot of energy due to the friction, giving a pressure drop. At certain conditions, the fluids flowing through this section can reach a boiling point. Once this happens, cavitation may occur.

The last letter in NPSHA stands for Available. The net positive suction pressure available depends on the installation of the pump and should be calculated. NPSHA takes into consideration things like insulation types, elevation, liquid temperature, liquid boiling point, much more. Available pressure should always be higher than the required value. For example, if the NPSHA is 12 for the pump requiring an NPSHR of 4 then the pump should be okay. However, a pump that required an NPSHR of 15 than the available NPSH is insufficient, and cavitation will occur.

DAE Pumps provides custom pump curves per the information you provide. Including as much information about the project allow us to best match a pump with your needs, so the centrifugal pump you get is ideal for the project.

NPSHA Formula - Net Positive Suction Head Available Formula

What is Cavitation in Pumps

How to Prevent Cavitation in Pumps

Cavitation in pumps is the deterioration of the pump’s metal due to the overheating of water. Cavitation destroys the pump’s impeller and casing that lead to replacing parts and the pump altogether. 

Water can turn from a liquid state into steam or gas and boils at around 100 degrees Celsius at sea level. However, at a higher elevation, water boils at a lower temperature because of atmospheric pressure. If this pressure is less than the vapor pressure of the liquid that is pumping, then the water can reach a boiling point. When this happens, cavitation occurs.

During cavitation, air particles within the water expand, and as they reach the boiling point, they collapse in on themselves very rapidly. As they collapse, they start to damage the impeller and pump casing. This damage removes small parts of metal from the surface, and if this keeps occurring, then it will eventually destroy the pump. Therefore, you must ensure the Available pressure is higher than the Required pressure of the pump.

Slurry Hose

Pump Accessories

DAE Pumps provides a full spectrum of centrifugal slurry pumps and accessories for completing all your tough dredging projects. We provide turnkey solutions with complete centrifugal slurry pump systems that include slurry hoses, slurry flow meters, power units, and more. Choose from multiple sizes of slurry hoses for the transferring of materials, wireless flow meters for measuring the flow rate in gallons per minute of liquid, and power units for operation. Parts are always in stock and available for immediate shipping to anywhere in the US and the world.

Custom Pump Curve

Guarantee the right pump size and power for the job with a free DAE Pumps custom pump curve for your centrifugal slurry pumps that graphically represents the pump’s flow rate of a specific head based on your exact requirements. Using a pump curve that is specific for your application will greatly help in selecting the pump best for you, ultimately saving you time and money.

Pump curves are developed from data gathered during testing of the pump’s performance at the manufacturer’s facility and provide the end-user with a graph of how the pump will operate over a set range. To build the pump curve, our engineers compile several variables, including the type of material, fluid viscosity, distance to pump, target GPM, and job-specific factors. This ensures the most efficient pump is recommended for your project. Contact a DAE Pumps representative today! 

Get your custom pump curve…

Pump Curve

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