Screw Pumps – Marine

Screw Pumps – Marine

DAE Pumps Screw Pump – Marine is of the positive displacement axial flow screw type with only three moving parts – a power rotor and two idler rotors. These three rotors have accurately machined precisely intermeshing threads which enfold the liquid being pumped and act as seals about each other and to the pump body or sleeve in which they rotate. The pump body is usually made of metal, and the seals are rubber. The seals work by keeping the fluid inside the pump from leaking out. The pump body usually has a handle to rotate the pump.

Designed for pumping oils, the Screw Pump -Marine has an axial pulse-free flow and silent operation for sensitive forced lubrication, seal oil circulation, and oil firing systems. Pumps are available in 17 frame sizes with various pitch angles and lengths, offering a vast flow and pressure range. The different frame sizes allow for a variety of different applications, and the pitch angles and lengths can be customized to fit the needs of each individual project. This makes the pumps ideal for a wide range of industries, from agriculture to manufacturing.

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Features:

Silent running
- Environmentally acceptable for site operators
Pulse free flow
- Ensures no emulsification of liquid, ideal for shear-sensitive liquids
Vibration free
- No costly foundations are required nor transmitted vibration through the system to downstream equipment
Compact design
- Lower capital cost and space-saving installation
High operational speed
- No intermediate speed reducers required; can run directly from high-speed power take-off, e.g., gearboxes
High volumetric efficiency
- Low running costs

Screw Pump – Marine Usage

DAE Pumps Screw Pump – Marine can be used on any clean lubricating liquid chemically compatible with construction materials.

- Lubricating Oil
- Hydraulic Oil
- Orimulsion
- Distillate Fuel Oil
- Residual Fuel Oil
- Crude Oil
- Grease
- Bitumen / Asphalt
- Viscose
- Fats
- Plasticizers
- Printing Inks

The lower viscosity limit is two cSt (gas oil at ambient temperature). This limit ensures that there is sufficient film strength for hydrodynamic support. The upper viscosity limit of 1750 cSt is determined by the standard mechanical seals’ operating limit. At reduced speed and an alternative mechanical seal, viscosities up to 5000 cSt can be accommodated.

Applications:

The Screw Machine range is designed for medium pressure high flow applications on clean liquids.

- Lube Oil Transfer
- Fuel Oil Transfer
- Orimulsion Transfer and Firing
- Scavenging
- Fuel Oil Pumping and Heating Sets
- Duplex Pump and Filter Sets
- Rail/Road Car Loading and Unloading
- Hydraulic Power Packs
- Watertight Door Operation
- Elevator / Lift Pumps
- Variable Pitch Propeller Control
- Bitumen Production and Loading
- Fats Transfer
- iscose Production

Accessories

Get turnkey solutions that include dredge hoses, slurry flow meters, power units, tanks for the collection and storage of slurry, and more. These accessories, such as tanks, are designed to integrate seamlessly into the overall pumping process, ensuring efficient material handling and process optimization. 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.

Maintenance and Repair

Regular maintenance is essential for ensuring the optimal performance and longevity of slurry pumps, including electric slurry pumps and submersible slurry pumps. In demanding applications such as mining, dredging, and construction, pumps are often exposed to high viscosity slurries, abrasive materials, and challenging conditions that can accelerate wear and increase the risk of clogging. To address these challenges, modern slurry pumps are constructed with wear resistant materials and specially designed impellers and wear parts, significantly reducing the frequency of repairs and minimizing downtime.

One of the standout features of today’s electric slurry pumps is their easy maintenance. Many models are engineered for quick and straightforward replacement of wear parts and seals, allowing operators to perform routine maintenance with minimal disruption to operation. This not only helps to keep operating costs and energy consumption in check, but also ensures that the pump continues to deliver efficient and reliable performance, even when handling tough materials like fly ash or sediment.

Regular inspection and verification of key pump components—such as the impeller, seals, and pressure systems—are crucial for identifying signs of wear before they develop into major issues. By adjusting the impeller and replacing worn parts as needed, operators can optimize the pump’s efficiency and extend its service life. This proactive approach to maintenance is especially important in industries where downtime can be costly and where the security and reliability of pumping systems are paramount.

In addition to in-house maintenance, many manufacturers offer specialized repair services, spare parts, and expert technical support to help operators maintain the quality and performance of their slurry pumps. When selecting a pump, it’s important to consider not only its suitability for your specific application, but also the maintenance requirements and support services available. By investing in high-quality, wear resistant pumps and adhering to a regular maintenance schedule, operators can reduce operating costs, minimize downtime, and ensure safe, efficient operation across a wide range of industries.

Ultimately, prioritizing maintenance and repair is key to maximizing the productivity and reliability of your slurry pumping systems. Regular verification and prompt response to any issues help maintain the security and efficiency of your operation, allowing you to meet the demands of even the most challenging pumping applications.