2026-04-10Views：
For medicine, food, semiconductor, chemical industry, fermentation and other industries, oil-free and clean compressed air must be the first choice. Oil-free oil-free screw air compressor, water-lubricated oil-free screw air compressor, oil-free scroll air compressor and oil-free centrifugal air compressor are common oil-free. Today, compare two types of oil-free screw air compressors-dry oil-free and water lubrication.
First:
the single screw water lubricated air compressor uses pure water for lubrication and cooling, and the internal parts combination of the body is made of special material medical grade stainless steel, which will never corrode.
Dry oil-free air compressor still depends on lubricating oil to cool, the body will produce oil smell.
Second:
the pure water of the water-lubricated air compressor system has been circulating in the system. The system will automatically change the water at a set time to ensure the quality of the water, and the operating temperature of the body is not higher than 50 degrees, so the water is not affected inside the body. And scale problems.
The operating temperature of the dry-type oil-free machine is very high, which exceeds 200 degrees, which directly affects the life of the cooling oil and the bearing.
Third:
the single-screw water-lubricated oil-free machine adopts imported special bearings, so there is no problem with direct water lubrication, high efficiency, low head noise, and few bearing combinations.
Twin-screw air compressors generally use FAG or SKF bearings, which are low-temperature bearings with short service life and high noise, and there are many combinations of double head bearings.
Fourth:
single screw water lubricated air compressor is directly sprayed with pure water in the body. Due to the high specific calorific value of water, the compression chamber is almost in the ideal state of isothermal compression and the compression process with the lowest energy consumption.
Dry-type oil-free cooling oil is about 100 degrees, the temperature of the compression chamber exceeds 200 degrees, and the temperature difference is relatively large, so the energy consumption is relatively high.
Fifth:
single-screw water-lubricated oil-free machine, the body and the motor are directly connected, the speed is low below 3000 rpm, there is no speed-increasing gear, the bearing life is long, and the maintenance cost is low.
The dry-type oil-free machine body needs to add a speed-increasing gear to the middle of the motor, because the speed is higher than 18000 revolutions, the speed-increasing gear needs to be increased, the bearing life is short, and the maintenance cost is high.
Sixth:
the water-lubricated air compressor uses water to cool the lubrication seal, the air quality is guaranteed, and the speed is about 3000 rpm. The temperature is about 55 degrees, and the maintenance cost is low.
The dry twin-screw air compressor uses oil to cool the bearings. The air quality cannot be completely clean and environmentally friendly. The two-stage compression speed reaches about 18000 rpm, which consumes labor and the temperature reaches about 200 degrees. It is unsafe and has high maintenance costs.
As we all know, air compressors account for more than 70% of the industrial electricity consumption, which belongs to the "big tiger" in industrial electricity consumption ". With the rapid improvement of the national economy, as an important part of the general machinery industry-compressor
The medical air compressor must be controlled within 60 decibels, and the sound of the general household air-conditioning compressor (about 55 decibels), medical staff will not feel uncomfortable working in such an environment. In view of the relatively quiet environment required by the hospital, air compressors with noise higher than 60 decibels cannot be used in hospitals.
View detailsIn the process of using the air compressor, air compressor users will encounter the phenomenon of automatic shutdown in the operation of the air compressor, and found that the air compressor head temperature is too high, then, why the air compressor will automatically stop it:
There are two conditions for the laboratory to purchase air compressors: 1. Quiet, use equipment that is prone to noise in the laboratory, and is not friendly to laboratory staff. Excessive noise can easily lead to mood swings, irritability and impatience, affecting work efficiency.
When purchasing screw air compressors, we often pay more attention to whether the air compressors are free of oil after compressing the gas. It is not cost-effective to consider selecting some power frequency air compressors based on the principle of cost saving. We should not only consider the oil-free air compressors but also consider energy saving. Then the most suitable air compressor is water-lubricated air compressors. The air discharged by water-lubricated air compressors does not contain oil, which is the first choice for purchasing oil-free air compressors.
View detailsThe water-lubricated air compressor head produced by Shanghai granklin group is also a latecomer, and its quality is not inferior to that of imported air compressor head.
View detailsEnergy conservation and environmental protection is always advocated by our country, and the R & D teams of manufacturing enterprises are also trying to develop energy-saving equipment. The screw air compressor, as one of the important gas equipment for production enterprises, will inevitably cause environmental pollution in the process of use.
Performance parameters of oil-free and water-lubricated screw air compressor: oil-free and water-lubricated air compressor adopts the original main engine of water-lubricated air compressor head produced by Shanghai granklin group, which proves its advanced technical quality in air quality, energy saving and operation reliability.
View detailsPurchase water-lubricated air compressor, choose Shanghai Granklin Group's oil-free water-lubricated air compressor series to provide you with energy-saving, clean and oil-free compressed gas.
Need to purchase a water-lubricated air compressor, provided that the oil-free compressor brand which is better? Choose the water-lubricated oil-free air compressor produced by Shanghai Granklin Group.
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