Two Stage Variable Speed (PM VSD)

Home > Products > Oil-Injected Screw Air Compressor > Med & High Pressure (20-40Bar) > Two Stage Variable Speed (PM VSD) > Medium Pressure PM Two Stage Variable Speed Rotary Screw Compressor

Medium Pressure PM Two Stage Variable Speed Rotary Screw Compressor

Model:DRV-Z Series

Brand:DREAM

Working Pressure:20~40 [ bar ]

               290.1~580.6 [ psig ]


Air Capacity (FAD):3.2~35.5 [ m³/min ]

                         113.0~1253.7 [ cfm ]

Power:75~280 [ KW ]

 102.0~380.7 [ hp ]

For other product parameters, we can customize for clients and please inquiry us.


Product Features

■ Durable and stable air end: two-stage integrated air end, third-generation asymmetric rotor technology; suitable for medium-pressure compression ratio matching, high volumetric efficiency; adopt heavy-duty bearings, and the rotor is well stressed; two-stage rotors are respectively passed gear drive, so that each stage of the rotor has the best linear speed; using a large rotor, low speed design, low noise and low vibration;

■ Permanent magnet motor, save your electricity cost, IP54, B-level temperature rise is suitable for harsh environments such as large dust and high temperature;

■ Coupling connection, more energy saving;

■ Multiple noise reduction design, calculated according to noise theory, with special flame retardant muffler cotton inside, to reduce the noise of the unit and provide a quieter environment for use.

■ Independent air intake, reduce intake resistance, multi-function intake valve group, start without load, motor load is small. Use high-efficiency filters to effectively filter particulates in the air;

■ Centrifugal fan with high-pressure plate-fin cooler has high wind pressure, low noise, independent external suction, exhaust air upward through a specially designed air duct to prevent hot air from returning; plate-fin cooler has high heat exchange efficiency and internal pressure The loss is small, which can make the oil fully exchange heat, no heat zone;

■ The conventional maintenance parts (three filters) adopt openable door panels, the installation position is easy to replace, and the maintenance is more convenient  

■ Specially designed main engine oil supply system to stabilize the oil supply pressure and ensure that the unit (especially the bearing) can get sufficient oil supply in the later period of long-term operation, the unit operates more stable and has a longer life.

■ High temperature shutdown protection;

■ Motor overload protection;

■ Overpressure safety decompression system;

■ Optimized shock absorption pad to reduce vibration and noise;

■ Double frequency conversion system is adopted, which is more energy-saving; multi-channel pressure sensor and multi-channel temperature sensor to comprehensively detect the running state of the unit; intelligent controller with color screen display, user interface is more friendly, control is more accurate and reliable.

■ The unit is equipped with an Internet of Things system, which can monitor the machine status on the mobile phone.

Parameter

Video

Brochure

FAQ

  • 1. Is the use of consumables the same as atmospheric equipment? (After-sales service)

    A: 

    It is not the same. The medium and high-pressure equipment consumables are customized consumables according to the equipment pressure, and ordinary ones cannot be used.

  • 2. Can you use general-purpose screw oil?

    A: 

    The medium and high pressure operating temperature and pressure are very high. The oil used must be the original oil, and the oil number must be special for medium and high pressure.

  • 3. Can the maintenance time be used for 3000 hours?

    A: 

    Due to the special operating conditions of medium and high pressure, the equipment needs to replace the three filters and oil every 1000/1500 hours

  • 4. Price comparison with piston type, technical advantages (sales)

    A: 

    Dream's screw type medium and high pressure micro-oil screw compressor is characterized by high efficiency, quietness, intelligent control, simple maintenance, long-term stable operation, and continuous output of compressed gas. No pulse and little vibration.

  • 5. Air end brand and material

    A: 

    Dream's customized medium and high voltage series air end

  • 6. Service life, is it safe?

    A: 

    The design life of the unit is 30 years, and you must perform normal maintenance as required

  • 7. How much ppm is the oil content?

    A: 

    ≤3ppm

  • 8. Can the air compressor be operated by mobile phone?

    A: 

    Our cloud IoT system supports mobile APP to view the operating status of the unit, and cannot operate the unit

  • 9. What material is the cabinet made of?

    A: 

    Cold rolled steel sheet

  • 10. Is the inverter of good quality? Is it high precision?

    A: 

    We have developed a dedicated inverter for air compressors in cooperation with well-known brands in the industry, and there is no problem in quality assurance

  • 11. How many air ends are there?

    A: 

    Dream's screw type medium and high pressure micro-oil screw compressor is a air end

  • 12. How much can the highest pressure do?

    A: 

    40bart

  • 13. Is there a configuration table?

    A: 

    Please consult our sales manager for sales materials such as product parameters and configurations

  • 14. What are the specifications of product accessories?

    A: 

    Please consult our sales manager for sales materials such as product parameters and configurations

  • 15. What brand of high pressure solenoid valve is used?

    A: 

    Please consult our sales manager for sales materials such as product parameters and configurations

  • 16. Is there an electric control box?

    A: 

    Dream's screw type medium and high pressure micro-oil screw compressor is an integral box structure, and customers only need to connect to the power supply to use

  • 17. What material is the piston made of?

    A: 

    Dream's screw type medium and high pressure micro-oil screw compressor uses a two-stage compression twin-screw main engine to compress gas without pistons.

  • 18. Will it explode? With such a high pressure

    A: 

    All the keys, flanges and pressure vessels in the unit are manufactured in accordance with the requirements of the national standard, and there is no such risk

  • 19. Is it controlled by PLC?

    A: 

    The control system of the unit is a PLC intelligent controller with man-machine communication interface.

  • 20. Can the exported machine provide detailed product information, certificates, and installation instructions in English?

    A: 

    Most of the bottle blowing related information will be placed in the random parts box

  • 21. Do I need to add a cold dryer to remove water between the first and second levels? How does the Dream medium compressor solve the problem of condensed water in the system?

    A: 

    There is no need to add a cold dryer to remove water between the first and second stages. Condensed water is generated in the system because the temperature of the compressed air in the compressor is lower than the pressure dew point, and the water vapor in the compressed air condenses into liquid water, which causes the air compressor oil to emulsify and deteriorate, causing other failures. In the design of the Dream medium compressor, the various conditions analyzed by the water are fully considered, and the temperature of the compressed air has been maintained above the dew point temperature, so that the generation of condensed water is fundamentally avoided; compared to the inter-stage cooling and drying The machine method can solve the problem more fundamentally, and the system is more reasonable and there are fewer failures.

  • 22. What is the difference between the medium pressure machine and the normal pressure screw machine?

    A: 

    The Dream DR(V)-Z medium pressure machine is a standardized model. The operation is basically the same as that of the atmospheric screw machine. It does not require personnel on duty and has a complete automatic control system. In use, pay attention to the reasonable matching of gas storage tanks and post-processing equipment, timely maintenance, and use of original accessories.

  • 23. What are the advantages of Dream medium pressure machine compared with piston machine?

    A: 

    1. Under the same displacement and pressure, the Dream screw press has a smaller size and a smaller footprint.
    2. The screw press is easy to install and use, with low noise, low vibration and high reliability.

    3. The screw intermediate compressor has fewer wearing parts, low maintenance cost and long service life.

  • 24. What is the parameter range of DR(V)-Z medium pressure machine?

    A: 

    The power range of this series of medium presses is 18.5KW-280KW, and the pressure is divided into five levels: 2MPA, 2.5MPA, 3MPA, 3.5MPA, and 4MPA. The pressure segments corresponding to different powers are slightly different, please consult the parameter table or call for details.

  • 25. What air end is used? Is a booster used?

    A: 

    The two-stage compression air end is used, and the air end allocates the compression ratio reasonably through careful design to meet the pressure needs. Different from the usual design method of compressor and supercharger in the market, our company's medium-pressure screw compressor does not use a supercharger, thus avoiding the common problems such as oil leakage of the shaft seal of the supercharger.

For more than a decade, Dream (Shanghai) Compressor Co., Ltd has been striving to become one of the leading manufacturers of compressed air solutions in China.

Contact Us

Mob.: +86 13671551445

E-mail: [email protected]

WhatsApp: ++86 13671551445

Add.:  Shanghai Sales Headquarters: Room 316, Building 1, Baodacheng Business Park, Songjiang District, Shanghai, China

Request a Quote

Copyright © Dream (Shanghai) Compressor Co., Ltd. All Rights Reserved | Sitemap   沪ICP备12023508号-7

Tel: +86 13671551445