Oil-Free Screw Air Compressor - 16 Pages

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Oil-Free Screw Air Compressor
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Catalog excerpts

Oil-Free Screw Air Compressor Oil-free air for all 90-315 kW

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Elgi, established in 1960, designs and manufactures a wide range of compressors. The company has gained its reputation for design and manufacture of screw compressors through strategic partnerships and continuous research and development. Over the years it emerged as a multi-product, multi-market enterprise providing total compressed air in all segments. Elgi’s design capabilities translated into wide range of products ranging from oil-lubricated and oil-free rotary screw compressors, reciprocating compressors and centrifugal compressors. Elgi has its own manufacturing operations in India, China,...

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Leveraging Inherent Strengths In-house rotor manufacturing capability High performance products, international quality standards, quick delivery and global aftersales support are only a few of the benefits customers enjoy by partnering with Elgi

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ELGI Oil-Free Technology Expertise 50 years of excellence and innovation through enduring partnerships Over two million Elgi compressors supply reliable compressed air to industries worldwide. Leveraging on this vast industrial experience and expertise in screw compressor technology, Elgi offers its NE series oil-free screw compressors. The compressors deliver 100% oil-free air and are easy to operate and maintain. While low operating costs and assured reliability are a given, our indigenous eta-V (η-V) profile rotors are designed to be highly energy-efficient. With no oil in the compression chamber,...

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• Non-reactive Food grade Poly Tetra Flouro Ethylene rotor coating ensures high quality air for all food processing and pharmaceutical • No risk of oil contamination in the output • Avoids production downtime due to maintenance of oil filters and clogged pipelines • Lower maintenance costs when compared to oil lubricated compressors (liquid, aerosol and vapour mg/m As specified by the equipment user or supplier and more stringent than classl 100% Oil-free Air for critical applications like power, steel, textile, healthcare, electronics, food processing and other industries.

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Design Advantage Designed to withstand high temperatures and tropical weather conditions Energy-efficient rotor profiles help to reduce energy consumption and carbon emissions considerably With its small footprint, the compressor is easy to install even where space is limited to save installation cost Rugged base eliminates the need for foundation Design of various compressor elements and acoustic enclosure ensure low sound and vibration levels Full opening double doors are designed for easy access to serviceable parts Operational Benefits Designed to operate under continuous load conditions Industry...

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Oil-free Screw Compressor : Life cycle cost Investment cost Low maintenance cost ( less than 1%) Higher uptime which results in higher productivity Maintenance Cost Power cost

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1 2 Timing Gear Case hardened helical gears made of high quality alloy steel ensures reliable gear system Precision ground to DIN 4 quality -To minimize transmission losses -Smooth and quiet operation Dynamically balanced to minimize vibration during operation Designed to reduce bearing loads to increase the life of bearings Highly Efficient Airend Elgi’s airends are equipped with in-house developed eta-V (η-V) profile rotors. With 3/5 lobe combination, the rotors are designed to run at optimum speeds with wide range of gear ratios. The unique design of rotors reduces pressure losses and increase...

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eta-V (η-V) profile airend : a look inside Bearing housing Radial bearing Male rotor 5 Axial bearing Water jacket 4 7 1 6 3 Oil seal 2 Air seal Rotor housing Female rotor Timing gear 6 Oil Seals Works on the pumping principle ensuring that the oil pumped away from the compression chamber ensure 100% oil free air Non contact type oil seals for longer life 7 Air Seals Radial and axial sealing using floating rings ensure minimum leakage during loading and unloading operations Low frictional loss and superior performance

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Motor High performance foot-cum-flanged IP55 induction motor (Low Tension) available as standard For High Tension and other specific voltage/frequency needs, please contact Elgi representative Check Valve Lift-type check valve prevents reverse flow from the compressed air network when the compressor operates in unload mode Leak proof sealing while unloading High reliability Aftercooler Gears & Speed 14000 Gear Box Designed for optimum speed Lower gear ratios help reduce the size of gear box Lower speed results in longer life and less noise Speed(rpm) 12000 10000 8000 6000 4000 Others Elgi 2000...

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Superior Benefits Mechanical Pressure Relief Valve Highly reliable spring loaded device guarantees additional safety over other pressure regulating devices Highly Efficient Cu-Ni Coolers Cooling water passes through stack of tubes which ensures easy de-scaling in case of hard water usage Water tube in coolers is made of Cupronickel (Cu-Ni) alloy for compact size and efficient cooling. The special alloy used allows better heat dissipation. Design integrates a moisture separator within the cooler Offers best resistance to water contaminants such as smut, silt and chlorides that gets accumulated...

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Intelligent Control NE series is controlled by efficient Programmable Logic Controller (Micro PLC). The Micro PLC is built with large memory and fast processor to manage control system of NE compressors and monitor its performance precisely. Compatible with modern communication topographies like DCS & SCADA Provides faster communication using channels like RS485 on MODBUS , Ethernet IP, Ethernet TCP/IP MODBUS Master /Slave controls on MODBUS (RS 485) & MODBUS TCP IP (ETHERNET) On Board Input/ Output (I/O) – 32 to accommodate 20 digital inputs & 12 digital outputs Capability to expand and support...

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AIR & OIL FLOW DIAGRAM 27 20 21 23 24 11 26 N 22 10 3 12 28 1 8 9 7 4 2 19 30 6 17 25 5 13 14 18 15 16 29 OIL FLOW AIR FLOW 1. 1st stage air-end 2. 2nd stage air-end 3. Gear casing 4. Main motor 5. Intercooler 6. Mist separator 7. Check valve 8. Discharge silencer 9. Aftercooler 10. Mist separator 11. Safety valve 12. Discharge flange 13. Oil strainer 14. Oil pump 15. Oil cooler 16. Oil filter 17. Oil pressure regulator 18. Orifice plate 19. Oil header 20. Suction box panel 21. Intake air filter 22. Suction butterfly valve 23. 4-way solenoid valve 24. Ventilating air intake duct 25. Motor support...

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