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Two Stage Rotary Screw Air Compressor

Components of Two-Stage Screw Air Compressor
1. High efficiency and energy saving air end with double stage

JUFENG double stage screw air compressor adopted double stage compressor screw, this type compressor air end are centrally part, the average energy saving more 15% compare with normal air compressor.

Air end with double stage's features
1) Higher reliability
JUFENG double-stage compression rotor after the completion of the finish machining of 20 procedures, to ensure the accuracy, reliability and effectiveness of rotor.

2) Reduce bearing load
In each compression process, the compression ratio is lower, so that the bearing load and the life of the main engine are reduced. The best quality of the bearing is the best quality.

3) Coolant spray design for isothermal compression
Compression heat is the factor of power loss, one of the reasons for the high compression efficiency of two is coolant spray design, the main engine in the process of work in the process of cooling air spray mist with a compressed air to reach a lower temperature, this kind of compressed air into the two compression stage, the temperature is close to a compressed air inlet temperature, thus saving the required energy.

4) Lower compression leakage
The traditional single compressor compression ratio is high, the compression ratio is higher, and the two stage compressor compression ratio is low, the compression ratio is lower, so the lower compression ratio is achieved.

2. High quality and reliable valve
Thousands of reliability and safety testing ensure the quality and durability of inlet valve, minimum pressure valve, thermostatic valve, safety valve.

3. High-quality filter
Adopt own brand oil-air separator, oil filter, air filter element, safe and reliable. Oil-air separator separate thoroughly which oil content less than 3 PPM; Air filter and oil filter are efficiency and long service life.

4. Oil-air separator
The highly efficient oil-air separator presents triple separation of centrifugal, gravity and filtration, leading the remaining oil less than 3ppm.

1st Separation: Centrifugal
The mixture of compressed air inside the compressor and the oil revolve in the separator under the centrifugal force.

2nd Separation: Gravity
After the centrifugal separation, the oil-air mixture punches the inside wall of oil-air vessel, and flow to the bottom of the vessel. At the bottom, the magnetic filter removes the iron powder and other small metals sucked together with air, preventing the scratch of separator.

3rd Separation: Filtration
It adopts the folding oil-air separator to increase the area.
With the fiber as the main body, the cylinder filter collects the atomizing lubricant from the air.

5. English/ Chinese LCD microcomputer touching panel
Screw air compressor control system is applied in English and Chinese LCD touching controller. Support the remote control and chain control. Communication port for RS 485, Modbus communication protocols, can choose other communication agreement.

1) Features of microcomputer controller
1. English and Chinese LCD touching panel;
2. All-round protection of motor with short circuit, plugging turn, phase lack, overload, unbalance;
3. The starting and stopping control of the motor;
4. Protection and measurement of compressor reversal protection;
5. The multiple temperature detection and display;
6. Automatic adjustment of compressor loading, ensure the stabilization of pressure;
7. Long-distance or local control;
8. Multi-machine or single machine operation control;
9. RS-485 communication function;
10. GPRS mobile remote control. (Optional)

2) Microcomputer controller warnings and prompt functions
1. Warning indication of air filter replacement;
2. Warning indication of oil filter replacement;
3. Warning indication of oil-air separator replacement;
4. Warning indication of oil replacement.

3) Microcomputer controller safety protection
1. Protection motor: compressor motor protection of short circuit, plugging turn, phase lack, three phase power imbalance;
2. Compressed air high temperature protection;
3. Protection of compressor reversal;
4. Protection of excessive pressure;
5. Protection of temperature sensor and pressure sensor;

Applications of Two-Stage Screw Air Compressor
Jufeng air compressor is widely used in all kinds of industries around the world, including electronics, electricity, water, electricity, environmental protection, petroleum, chemical, mining, metallurgy, pharmaceutical, food, aviation, shipbuilding, military, scientific research, wood, textile, printing, glass, construction, building materials and other fields.

Air compressors can be grouped into three classifications: consumer grade, professional grade and industrial grade.
• Consumer grade air compressors can be described as a pancake or single-stage model. They're used for household tasks like inflating tires and inflatable products and possibly some low-load air tools like staplers and brad guns.
• Professional grade air compressors provide more power and higher pressurized air. They could be two-stage reciprocating models or rotary screw models and can provide more power to run several air tools at once with intermittent use.
• Industrial grade air compressors will be the workhorse of a manufacturing plant or the reliable power source on an oil rig. They are designed to provide a steady flow of compressed air for long periods of time and can take fluctuating surges in use typical in major manufacturing plants. These compressors are built with high-quality components that allow for customization to the specific environment to improve performance, energy efficiency and reliability.

Precautions of Two-Stage Screw Air Compressor
1. Srandard Power: 380V/50HZ/3PH, 415V/220V/60HZ and other voltage can be customized.
2. Starting method: 10A or below direct starting,15A or above star-delta srarting.
3. Working environment temperature: -5℃-45℃;
4. Driven method: Belt driven / Direct driven.
5. Welcome request & inquiry of customized the pressure up to 16 bar
6. The company on product improvement and reserves the right of design improvement parameters are subject to change without prior notice.

About the maintenance:
1st maintenance: After 500 hours of running
2nd and subsequent maintenance: Every 2000 to 2500 hours of running

Technical Parameters of Two-Stage Screw Air Compressor
Model Discharge pressure FAD Power RPM Weight Outlet pipe diameter Noise Volume of oil Dimension(Air cooling ) Dimension(Water cooling)
JF-20AH 0.7Mpa 2.9m3/min 15kw 1460 780 G11/2″ 64±2 30L 1620×1000×1320 1620×1000×1320
0.8Mpa 2.8m3/min
JF-25AH 0.7Mpa 3.6m3/min 18.5kw 1460 800 G11/2″ 65±2 30L 1620×1000×1320 1620×1000×1320
0.8Mpa 3.4m3/min
1.0Mpa 2.9m3/min
1.3Mpa 2.5m3/min
JF-30AH 0.7Mpa 5.2m3/min 22kw 1470 850 G11/2″ 66±2 30L 1620×1000×1320 1620×1000×1320
0.8Mpa 5.0m3/min
1.0Mpa 4.4m3/min
1.3Mpa 3.8m3/min
JF-40AH 0.7Mpa 6.3m3/min 30kw 1470 920 G 2″ 66±2 30L 1620×1000×1320 1620×1000×1320
0.8Mpa 6.2m3/min
1.0Mpa 5.0m3/min
1.3Mpa 4.3m3/min
JF-50AH 0.7Mpa 7.2m3/min 37kw 1470 1450 G 2″ 68±2 62L 2000×1250×1670 2000×1250×1670
0.8Mpa 7.0m3/min
1.0Mpa 6.2m3/min
1.3Mpa 5.4m3/min
JF-60AH 0.7Mpa 9.8m3/min 45kw 1470 1560 G 2″ 70±2 62L 2000×1250×1670 2000×1250×1670
0.8Mpa 9.6m3/min
1.0Mpa 7.8m3/min
1.3Mpa 6.5m3/min
JF-75AH 0.7Mpa 12.3m3/min 55kw 1480 1690 G 2″ 69±2 62L 2000×1250×1670 2000×1250×1670
0.8Mpa 12.1m3/min
1.0Mpa 9.6m3/min
1.3Mpa 8.6m3/min
JF-100AH 0.7Mpa 16.5m3/min 75kw 1480 2450 G 2″ 70±2 76L 2700×1600×1840 2700×1600×1840
0.8Mpa 16.2m3/min
1.0Mpa 12.5m3/min
1.3Mpa 11.2m3/min
JF-120AH 0.7Mpa 19.6m3/min 90kw 1480 2600 G21/2″ 72±2 76L 2700×1600×1840 2700×1600×1840
0.8Mpa 19.2m3/min
1.0Mpa 16.8m3/min
1.3Mpa 14.5m3/min
JF-150AH 0.7Mpa 23.5m3/min 110kw 1485 2760 G21/2″ 73±2 76L 2700×1600×1840 2700×1600×1840
0.8Mpa 23.2m3/min
1.0Mpa 19.7m3/min
1.3Mpa 17.6m3/min
JF-175AH 0.7Mpa 28.2m3/min 132kw 1485 3300 G3″/DN80 75±2 90L 3400×1700×1950 3000×1700×1950
0.8Mpa 27.7m3/min
1.0Mpa 23.6m3/min
1.3Mpa 19.8m3/min
JF-200AH 0.7Mpa 33.6m3/min 160kw 1490 3400 G3″/DN80 75±2 90L 3400×1700×1950 3000×1700×1950
0.8Mpa 33.2m3/min
1.0Mpa 30.0m3/min
1.3Mpa 23.8m3/min
JF-250AH 0.7Mpa 40.2m3/min 185kw 1490 4200 G3″/DN80 76±2 125L 3700×1980×2150 3000×1980×2150
0.8Mpa 38.6m3/min
1.0Mpa 33.0m3/min
1.3Mpa 28.6m3/min
JF-270AH 0.7Mpa 44.5m3/min 200kw 1490 4300 DN100 76±2 125L 3700×1980×2150 3200×1980×2150
0.8Mpa 43.2m3/min
1.0Mpa 38.5m3/min
1.3Mpa 33.0m3/min
JF-300AH 0.7Mpa 48.6m3/min 220kw 1490 4400 DN100 79±2 125L 3700×1980×2150 3200×1980×2150
0.8Mpa 47.0m3/min
1.0Mpa 41.0m3/min
1.3Mpa 38.0m3/min
JF-340AH 0.7Mpa 55.0m3/min 250kw 1490 DN125 78±2 190L 4100×2100×2150 3200×2100×2150
0.8Mpa 54.0m3/min
1.0Mpa 46.0m3/min
1.3Mpa 40.0m3/min
JF-380AH 0.8Mpa 60.0m3/min 280kw 1490 DN125 80±2 190L 4100×2100×2150 3400×2100×2150
1.0Mpa 52.0m3/min
1.3Mpa 45.0m3/min
JF-430AH 0.8Mpa 67.0m3/min 315kw 1490 DN125 80±2 200L 4100×2100×2150 3400×2100×2150
1.0Mpa 63.0m3/min
1.3Mpa 51.0m3/min

Guangdong Jufeng Machinery Manufacturing Co., Ltd. (FACTORY)

Add.: C1.C7.C17 Huachuang Animation industrial park, Panyu District, Guangzhou.
E-mail: sales@gdjufeng.cn

Shanghai Raige Trading Co., Ltd. (EXPORT COMPANY)

Add.: Room 1613, Building #3, Wanda Plaza, 4995 Gonghexin Road, Baoshan District, Shanghai.
Email: sales@gdjufeng.cn

Guangdong Jufeng Machinery Manufacturing Co., Ltd.