2026-04-10Views：
Good or bad depends on the occasion of use and the actual working conditions. In some cases, such as food, medicine, precision instruments and other industries, it is necessary to use a full oil-free air compressor. But the whole oil-free air compressor is much more expensive and the maintenance cost is higher.
If it is used for purging, machining, manufacturing and power use, it is possible to choose an air compressor with oil and micro oil. Such as spraying, steel, electricity, hardware, mining, ceramics, textiles, machinery, etc. are widely used.
The difference between oil and no oil
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, the oil content is used to distinguish the oil and no oil in the air compressor.
Now large displacement, all oil-free air compressor models have begun to use centrifugal air compressors.
One is to use water instead of oil, and the other is to coat the rotor with a self-lubricating coating (not oil lubrication, but resin lubrication). Because the bearings running at high speed at both ends of the rotor need oil lubrication, it is necessary to seal the lubrication space of the rotor bearing and the compression space of the rotor. It is precisely because of this high-speed seal that the oil-free air compressor needs high processing accuracy. The cost is also very high.
Oil-free air compressor once the failure of the host head, because too precise, the host head can only be repaired back to the manufacturer, greatly increasing the irreparability, even if it can be repaired, also need to pay a huge amount of money and a lot of maintenance time.
At present, the quality and stability of this kind of air compressor is not very satisfactory, and the domestic oil-free machine is generally lubricated. Therefore, it is not a super large enterprise, or has special requirements, must be completely oil-free, it is best not to blindly purchase oil-free air compressor. Looking for good brand, professional technical personnel, combined with their own industry and actual use, understand the advantages and disadvantages, in the choice of judgment.
Air compressor which brand is good? If you don't care about the price, it is certainly good to buy air compressors in Europe and America and Japan. But in the case of limited budget, the preferred domestic air compressor brand words, recommended Shanghai Granklin Group. Granklin air compressor brand, in the domestic price is still very high. Fully independent production of air compressor head, quality assurance, after-sales is also very good.
View detailsAccording to China Electric Power News Network on September 23, the first centralized compressed air supply project in Shaoxing Binhai Industrial Zone, Zhejiang Province, has officially landed and is about to start construction. After the completion of the project for the surrounding 56 printing and dyeing enterprises to provide nearly 3000 standard cubic meters per minute compression
Granklin water lubricated air compressor has a reasonable structure and an ideal force balance: both sides of the screw of the oil-free air compressor are equipped with a star wheel symmetrical structure, so that the oil-free air compressor not only has no unbalanced inertial force, but also The axial force and radial force on the screw cancel each other out, making it have an ideal force balance.
Food, medicine, textile, chemical and other industries with high gas requirements, oil-free air compressors are gradually recognized by enterprises and widely used by more and more companies.
Features and advantages of oil-free and water-lubricated screw air compressor 1. The structure is reasonable and has ideal force balance. Both sides of the screw of the oil-free air compressor are equipped with a star wheel symmetrical structure, so that the oil-free air compressor not only has no unbalanced inertial force, but also The axial force and radial force used on the screw also cancel each other to make it have ideal force balance
Several advantages of oil-free air compressor, as well as the difference between oil-free air compressor and oil-free air compressor. Specifically, look at their differences: oil and no oil in the air compressor generally refer 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, so 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.
With the growth of enterprises and the improvement of customer requirements, more and more factories will choose the latter between price and quality when purchasing air compressors. But there are also some factories in order to covet the temporary cheap, and choose cheap products, cheap can buy?
Air compressors are generally classified into the following categories: 1. According to the gas transmission volume, to put it bluntly, the gas transmission volume refers to the volume of the gas discharged from each minute of the air compressor during operation, calculated to be sucked in. The small and medium-sized exhaust volume is less than 10 cubic meters/minute, and the small and medium-sized exhaust volume is 10~100 cubic meters
When used as a process source gas, compressed air is in direct contact with materials and food. When used as a power source, although not in direct contact with food and raw materials, but most of them are used in clean areas. Therefore, compressed air for food must use clean compressed air.
As the country pays more and more attention to energy conservation and emission reduction (fashionable name is carbon neutral), the application of low-pressure screw air compressor is also increasing. At present, there are three main types of low-pressure screw machines: dry screw, water spray screw, and oil spray screw.
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