Difference between oil injection air compressor and water lubrication air compressor

Several advantages of oil-free air compressor, as well as the difference between oil-free air compressor and oil-free air compressor.

See their differences specifically:

oil and no oil in the air compressor generally refers to the amount of oil content in the gas discharged from the exhaust port of the air compressor. Generally, the oil content of the oil machine is relatively large, and the oil content of the oil-free oil machine is 0.01ppm. Therefore, this oil content is used to distinguish the oil and no oil in the air compressor. There is also a full oil-free air compressor, it is not the use of oil lubrication, but the use of water lubrication, so the final discharge of the gas does not contain oil called full oil-free air compressor.

Oil-free screw air compressor really oil-free?

Let's look at the advantages of oil-free air compressors.

1. the current refrigeration dryer, no heat regeneration dryer, micro heat regeneration dryer and other water removal equipment, due to the oil in the compressed air and loss of water removal function; and the clean oil-free gas compressed by the oil-free compressor, fully protect the water removal equipment, reduce the maintenance of water removal equipment caused by the additional capital occupation.

2., the use of oil air compressor greatly wastes lubricating oil. Taking a 7.5KW high-quality oil air compressor as an example, it consumes a minimum of 5kg of lubricating oil per month, and will pay an extra 60kg of lubricating oil for a year. At the same time, in order to remove the oil in the compressed gas, an efficient oil filter needs to be used, and the filter core needs to be replaced many times, which is also a great expense.

3. because of the high viscosity of the lubricating oil, the current oil removal equipment cannot be completely removed, so that the oil-free air compressor compressed gas does not contain oil.

4. oil-free air compressor is used to provide compressed gas to the outside, the motor load will not be greatly reduced due to the pressure loss caused by oil removal equipment, thus achieving energy saving effect. At present, the high-quality three-stage oil remover will produce a pressure loss of 1 to 1.2kg during use. A 7.5KW air compressor will pay an extra 600W of power loss for every 1kg of pressure increase, and 6 degrees of electricity for every working day (10 hours, for example), this will be a long-term intangible expense.

Summary:

in fact, each air compressor has its own advantages and disadvantages. When choosing, it should make a suitable choice according to its own needs. There is no absolute rule. Only by recognizing the advantages and disadvantages of each air compressor can make a full understanding of the choice.

On the whole, it is more cost-effective to purchase water-lubricated air compressors. After all, water-lubricated air compressors are better than traditional oil-injected air compressors in terms of maintenance and gas.