Rotary 250KW Oil Free Compressed Air Variable Frequency Variable Speed

Product Specification

Rotary Screw Compressor Permanent Magnet Variable Frequency Oil Free Energy-Saving Water Cooling

The oil-free screw air compressor is a volumetric gas compression machine whose working volume makes a rotary motion. The compression of gas is realized by the change of volume, and the change of volume is achieved by means of a pair of rotors of the air compressor rotating in the casing.

Overview of working principle

In the body of the compressor, a pair of intermeshing helical rotors are arranged in parallel. Usually, the rotors with convex teeth outside the pitch circle are called male rotors or male screws. The rotor with concave teeth in the pitch circle is called the female rotor or the female screw. Generally, the male rotor is connected with the prime mover, and the male rotor drives the female rotor to turn the last pair of bearings on the rotor to achieve axial positioning and bear the pressure of the compressor. axial force. Cylindrical roller bearings at both ends of the rotor allow the rotor to be positioned radially and withstand the radial forces in the compressor. At both ends of the compressor body, orifices of a certain shape and size are respectively opened. One is used for suction and is called the air inlet; the other is used for exhaust and is called the exhaust port.

 
 
Technical Parameters:
 

 
 
Machine Details:
 
1.Pure air, pure gas, zero pollution - what you need is what we want to do.
 
2.Exhaust temperature is only 40-50℃ Isothermal compression method increases the volume efficiency by 15% compared with other oil- free screw air compressors.
 
3.Only need to change the air filter and water filter, the maintenance cost is low and the use is economical and convenient.
 
4.The main screw airend and air pipes are made of 304 and 316 stainless steel corrosion-resistant materials. Even after several years of normal use. they are still new and lasting.
 
5.Pressure range is 0.3-1.6 MPA. And single stage compression can be easily completed.
 
 

The difference between an oil-filled air compressor and an oil-free air compressor is: different materials, different final exhaust gases, and different life spans:

Different materials

1. Oily air compressor: The material of the oily air compressor itself contains oily substances, which will pollute the terminal equipment.

2. Oil-free air compressor: The material of the oil-free air compressor itself does not contain oily substances, which avoids the pollution of terminal equipment by oil-containing machines.

The final exhaust gas is different

1. Oily air compressor: Oily air compressor is lubricated by oil, so the final discharged gas contains oil.

2. Oil-free air compressor: The oil-free air compressor uses water to lubricate the head of the air compressor, so the final discharged gas does not contain oil.

Whether it is good or not depends on the application occasion and actual working conditions. In some occasions, such as food, medicine, precision instruments and other industries, oil-free air compressors must be used.

But oil-free air compressors are much more expensive, and the maintenance costs are also higher. If it is used for purging, machining, manufacturing, and power use, choose an air compressor with oil or micro oil. Such as spraying, steel, electric power, hardware, mining, ceramics, textiles, machinery, etc. are widely used.

Machine Image:
 
  
 
 
Factory Overview:
 

FAQ
 
1.Why customer choose us?
Shanghai LTC Compressor Co., Ltd specializes in Rotary Screw Air Compressor, integrating R&D, production, sales and service. High-level quality control and years of exporting experience help us win trust and loyalty of our customers around the world. Warmly welcome your inquiries and orders for quality test, more favorable sales conditions will be provided to support you expand local market if long-term partnership can be established.
 
2.Are you a manufacturer or trading company?
We are a professional manufacturer in China with over 25 years experience in air compressing solutions. We have 2 factories in Shenzhen, and our overseas business department is in Minhang district , Shanghai. OEM&ODM service is accepted.
 
3.What’s your delivery time?
For standard machines, we can deliver within 3-5 days. For customized machines or urgent orders, please contact our sales in advance.
 
4.How long is your air compressor warranty?
One year for the whole machine and two years for screw air end, except consumable parts such as air filter, oil filter, oil separator and precise filter elements.
 
5.How does your factory do regarding quality control?
International leading processing equipment and advanced manufacturing technology ensure LTC screw compressor with high efficiency, low noise, low power consumption, high reliability.
 
6.How long is the lifespan of your air compressor?
Generally, more than 10 years.
 
7. What's price term?
FOB, CIF, EXW, all are available, according to your requirements.
We have long-term cooperative shipping agent in sea shipping, much more professional and can help you save shipping cost.
 
8. What's payment term?
T/T, L/C, D/P, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.
 
9.How about your after-sales service?
(1) Installation and commissioning online instructions.
(2) Well-trained engineers available for overseas service.
(3) Worldwide agents and after-sales service available.