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Robuschi’s Low Pressure Screw Compressor range is available up to 2,500 mbar(g) of pressure with a maximum air flow of 10.000 m³/h. The Robox Screw package can reach pressure up to 2,500 mbar(g) with specific outlet ports (three different compression ratios) to guarantee the best efficiency consumption in all operating conditions.
The low-pressure screw compressor combines the features of the proven PD blower range with innovative components, cutting-edge design and outstanding efficiency. The range accommodates the state of the art RSW" and “CDL” air ends (patent).
During the time of industrial efficiency and innovation, Robox Screw low pressure screw compressor – exemplifies our commitment to excellence. As one of the examples of our evolving product range, it not only meets but exceeds the diverse and precise needs of our clients.
See below what truly sets our screw compressor apart:
Energy Efficiency: Equipped with an air end with patented rotors, it operates with fewer revolutions, improving the capacity-pressure ratio and conserving energy.
Quiet Operation: The advanced internal compression, combined with silencers and a noise-dampening enclosure, ensures operation is whisper-quiet.
Ease of Maintenance: Its simple and robust construction allows for straightforward maintenance, minimizing downtime.
Eco-Friendly: With its oil-free design, the compressor is environmentally conscious and holds a Class 0 certification according to ISO 8573-1.
Simplified Installation: Designed for hassle-free installation and configuration, it streamlines the setup process.
Operational Flexibility: The compressor's design ensures flexibility, allowing it to operate efficiently under various conditions.
Customization Options: A broad range of options are available to tailor the compressor to your specific requirements.
Global Support: Backed by our presence in over 50 countries, you receive unparalleled local service and technical support.
This screw compressor is not just a product, but a comprehensive solution designed to enhance your productivity and operational efficiency.
The RSW or CDL oil-free low pressure screw compressor airend, also known as “helical screw” compressor, is a positive displacement machine that uses rotary motion.
It delivers constant flow (volume) and variable pressure. This means that at a given speed (rpm), the screw air end always supplies the same amount of air, independent of pressure variation.
The RSW and CDL low pressure screw air ends consist of a pair of helical profile rotors. One male rotor with 3 convex lobes and one female rotor with 5 concave lobes or “flutes” contained in a casing.
While maintaining precise alignment by means of timing gears, the rotors turn in opposite directions. They mesh to form a series of working chambers between the rotors and the casing wall.
The gas is sucked from the intake side (suction), trapped between the rotors and the casing (radially) and the cover (axially). It is then transported to the compression side (discharge) where the working chamber shrinks, and air is compressed.
The polytropic (internal) compression supplies a steady air flow. This minimizes vibration and maintenance, while maximizing the lifetime of the device.
Since there is no oil for sealing (oil-free screw), the rotors have very precise and small tolerances. This maintains a very small air gap between the two in order to guarantee optimal performance without touching each other and minimize the volumetric losses.
The air-cooled RSW low pressure screw air end can reach a maximum pressure ratio (outlet pressure divided by inlet pressure) of 3,5.
Screw compressors can be a great solution in diverse areas and sectors:
Wastewater Treatment: Screw compressors are used to aerate the wastewater, which promotes the breakdown of organic matter by bacteria.
Pneumatic conveying: Compressors supply air for rapid transport in dilute phase applications and maintain higher pressures for gentle conveying in dense phase scenarios.
Petrochemical: These compressors are essential for process gas compression and for powering pneumatic tools and controls in refineries.
Chemical/Pharmaceutical: These industries use screw compressors for process air, material handling, and to maintain cleanroom conditions.
Food: Compressed air is used in food processing for packaging, sorting, and cutting, as well as for maintaining sterile conditions.
Pulp & Paper: In paper production, compressed air is essential for cutting, pressing, and folding operations.
In each of these industries, screw compressors are valued for their reliability, efficiency, and continuous supply compressed air. This is vital for seamless production and operations.
Selecting the right low pressure screw compressor model involves several key considerations to ensure that it meets your specific needs. Here is a step-by-step guide to help you make an informed decision:
Understand Pressure and Flow Requirements: Identify the required pressure for your applications. Typically, wastewater treatment plants require a compressor that can adjust to varying air demands. To meet this need, the compressor is equipped with an inverter, allowing it to regulate its speed and airflow effectively through a variable speed drive system.
Evaluate Air Quality Needs: Some industries, like food processing or pharmaceuticals, require oil-free air to avoid contamination. If your industry requires high air purity, consider an oil-free screw compressor model with appropriate filtration.
Consider Efficiency: Look for energy-efficient models that can reduce operational costs over time.
Size and Space: Take into account the physical size of the compressor and the available space in your facility. Ensure there's enough room for operation and maintenance access.
Noise Levels: If the compressor is located near workspaces, consider the noise level of the unit. Models with noise enclosure features can be beneficial in reducing noise pollution.
Maintenance and Service: Understand the maintenance requirements of the compressor. Choose a model with easily accessible components to facilitate routine maintenance. Also, consider the availability of service and parts from the manufacturer.
Total Cost of Ownership: Beyond the initial purchase price (CapEx), consider the total cost of ownership, which includes operating expenditures (OpEx) such as maintenance, repairs, and energy consumption over the lifespan of the compressor.
Additional Features: Depending on your specific needs, you may require additional features such as filters, or advanced control systems that can provide additional benefits and convenience.
By carefully evaluating these factors, you can select a low-pressure screw compressor model that will provide reliable performance, meet the demands of your applications, and offer the best value over its operational life.
Once you have considered the factors for selecting the right low pressure screw compressor for your needs, we invite you to reach out to our knowledgeable team for further assistance. Our experts are dedicated to helping you find the perfect match for your specific requirements. Don't hesitate to contact us for any questions or to request a personalized quote.