In industry, twin screw pumps are used for a variety of applications, from transferring hazardous liquids to moving viscous materials, twin screw pumps are commonly used for moving fluids and transferring chemicals in industries such as food processing, petrochemical products, pharmaceuticals, cosmetics, and more. As their name suggests, these pumps have two screws that rotate in opposite directions, which helps to move fluids more effectively.
Twin screw pumps are positive displacement (PD) pumps that use two opposed screws to push fluid through the pumping chamber. As the screws turn, pockets of fluid are drawn in and then pushed along until they’ve discharged out the other side. These specialty PD pumps are often used when high-pressure output is required or where shear-sensitive materials need to be handled without degradation. In some cases, one or both of the screws can be tapered so that they’re narrower at one end than the other. This design helps increase volumetric efficiency.
Twin screw pump configurations can be either inline or lobe type – each with its own unique benefits and disadvantages that should be considered before making a purchase decision. When configured as an inline twin screw pump, both screws share a common shaft running parallel to the center line of the housing/pump body.”
If you’re curious about how these versatile pumps can be used in your business, read on to learn more about twin screw pumps and their many uses.
- what are twin screw pumps used for
- how do they work
- benefits of using a twin screw pump
- types of applications where they are commonly used
- how to choose the right size and model for your needs
1. What are twin screw pumps used for
Twin screw pumps have a wide range of applications across many industries due to their unique design and ability to handle abrasive, sticky, and viscous materials. Twin screw pumps are mostly used for transferring liquids such as chemicals and oils, but are also capable of handling shear-sensitive items like paints and suspensions. These pumps offer a number of benefits including higher capacities than traditional rotary or lobe pumps while maintaining low-pressure levels and high suction capabilities. Since they are self-priming, twin screw pumps allow users to operate without needing an external source of motivation. In addition to their use in the production of oil, chemicals, food products, cosmetics, detergents, and paint pigments, twin screw pumps can also be found in medical diagnostics and laboratory equipment.
2. how do they work
Twin screw pumps are extremely useful, efficient pieces of equipment used for transporting water and other fluids. The pumps, which are powered by electric motors or turbines, rely on two intermeshed screws to move the fluid along. As the rotating screws pull the fluid through, it is compressed and corotated so that spinning and pressure build-up can occur at different velocities.
As the two screws move against each other, they create a vacuum that draws fluids into the pump chamber from the intake port. Within the chamber, the fluid is moved toward the outlet port as the screws rotate further. Along with their efficiency and reliability, twin screw pumps provide flexible flow rates and can handle highly viscous liquids as well as most gases.
Due to these factors, they are frequently used for applications such as fuel delivery and chemical processing.
The speed of the pump’s delivery rate can be easily adjusted, allowing it to deliver both small and large amounts of liquid from one place to another. Thanks to its efficiency and adjustable speed capabilities, the twin screw pump is a popular choice in many industries in which precise control over the conveyance of liquids is required.
3. Benefits of using a twin screw pump
Twin screw pumps are an ideal solution for a wide range of applications including low-shear, heavy-duty, high-flow, and viscous fluids due to their robust, reliable design.
The dual screws that are used in this device help to reduce pulsation and the ability to raise pressure increase performance capability.
Their design also allows for the pump to consume less energy (reducing costs) while reducing noise, which is an important feature for many productions.
Additionally, they can be used over a long period of time as they require very little maintenance compared to other pumping technologies. The installation process is straightforward and customizable, enabling the pump to fit into any existing system configuration with ease. In short, twin screw pumps deliver superior performance with minimal effort and cost, making them an excellent choice for a wide range of industrial applications.
It offers versatility to be used with different liquid types and temperatures in different industries including pharmaceutical, food processing, oil extraction, paint manufacturing, soaps, and detergents production, as well as chemical and petrochemical applications.
4. Types of applications where twin screw pumps are commonly used
Twin screw pumps are a vital piece of equipment that serve a variety of purposes, these versatile and reliable pumps provide superior performance for continuous duty applications involving the transfer, metering, blending, or circulation of various media. They provide reliable, efficient performance for many challenging duties such as pumping highly viscous products, shear-sensitive fluids, and liquids containing abrasive particles with minimal pulsation.
1) Food and beverage industry
These pumps are often found in the food and beverage industry, handling thick syrups, cheese curds, heavy cream, chocolate, honey, beer, dairy processes, and other viscous soft drinks.
2) Chemical industry
Twin screw pumps can be used in chemical processes requiring precision metering, as well as in the chemical industry when dealing with highly viscous material, such as glass glue, molasses chemicals, and petrochemicals.
3) Petroleum industry
Twin screw pumps can also be especially helpful in industries involving pumping asphalt, and other petroleum add-ons. And fuel oils around pipelines where the flow must remain consistent over an extended period of time.
4) Wastewater treatment
In wastewater treatment processes, they are frequently utilized to meter chemicals during coagulation and flocculation processes or to pump sludge containing fecal matter.
Twin screw pumps are also used to transfer wastewater from more industrial operations
5) Mining operations
The twin-screw pump is also the most ideal pump for conveying coal-water slurry.
6) Vessels & automotive industry
Twin screw pumps have become increasingly popular in the automotive industry, where they excel at handling both suspensions and high-viscosity media needed for fuel systems and lubricity additives. They are also used to move high-pressure oil in automotive diesel.
7) Healthcare facilities & Biotech laboratories
Their accuracy and reliability make them essential components in healthcare facilities for drug delivery applications or chemotherapy treatments, as well as biotech laboratories working with cell culture media processes.
8) Oilfield transfer applications
The twin screw pump can be used for the water-gas-oil mixed transfer and crude oil transfer.
9) Petrochemical pumping
10) Metallurgy industry & Thermal power plant & hydropower plant
They are ideal for applications such as lube oil transfer in lubrication systems, hydraulic systems, injection combustion systems
11) pulp & at paper mills
12）Gas station
13) Aerospace systems
14) Irrigation systems
5. how to choose the right size and model for your needs
Choosing the right size and model of twin screw pump for your needs can be a daunting task.
Before you make a decision, consider both the flow rate required for your application and the pressure capabilities of each pump model.
Additionally, ensure that you select a model that meets any material requirements for temperature, viscosity, or corrosiveness for your application. Doing research on different makes and models is also necessary to find out how easy it is to source spare parts or maintenance services if needed.
Besides, considering any other system components such as motors, drives, shaft seals and other accessories will ensure all components are working optimally together.
Finally, it’s important to thoroughly review the specifications of the pump before making your purchase to make sure the pump will meet all of your needs once installed.
Tell us your requirements, we will customize the twin screw pump for you.
- conveying medium ( )
- The viscosity of the medium ( ) (m㎡/s)
- Inlet pressure: ( )MPa
- outlet pressure: ( ) MPa
- Flow : ( )m³/h
- Medium working temperature:
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