2026-04-10Views：
General pharmaceutical plants also have strict requirements for compressed air, and the water and oil in the air are strictly controlled. Therefore, the preparation equipment of the compressed air system uses more oil-free machines (from the source to eliminate the pollution and adverse effects of oil molecules). We all know that our air generally does not contain oil, so where does the oil of compressed air come from?
Of course, it is mainly the air compressor used in the production of compressed air.
For the air compressor, it is also oil-free, perhaps you will have such doubts. Where does the oil come from?
Of course, it is the necessary lubrication of the equipment.
Below, to introduce several common oil-free air compressor models on the market, including the following:
① Piston-type oil-free machine
②. Scroll-type oil-free machine
③ Centrifugal oil-free machine
④ Dry oil-free air compressor
⑤ Water-lubricated oil-free machine
below, respectively, such as the above five kinds of equipment to do a simple principle introduction, and analyze their advantages and disadvantages, so as to make reference for everyone in the selection of equipment:
one: oil-free piston air compressor
it is not lubricated with oil, but lubricated with resin materials, so the final discharged gas is called an all-oil-free air compressor without oil. However, in the past, this kind of air compressor was damaged due to dry grinding of bearings due to easy loss of sealed lubricating grease, and the quality was not very satisfactory. In China, an oil-free air compressor with oil lubrication is generally developed. Now a new oil-free air compressor is developed, which uses a heat-resistant piston, the bearing grease is no longer subjected to high temperature conduction and radiation loss.
Advantage: Cheap.
Disadvantages: loud noise, frequent maintenance, high cost, large gas loss, not a non-oil machine in the sense of justice.
Market: Micro and small start-up enterprises, private small dental clinics, scientific research units, etc.
2. scroll-type oil-free machine
the moving vortex rotates around the center of the static vortex as a plane with a small radius, and the formed working cavity is expanded or reduced accordingly, thereby realizing the process of gas suction, compression and exhaust.
Advantages: good mute effect, low price (domestic), brand effect (imported).
Disadvantages: small displacement model, high energy consumption, short service life of the main engine, not repairable (18 months -24 months)
suitable for the market: hospitals, dental clinics, scientific research units, printing, spraying industry, etc.
3. centrifugal oil free machine:
through the high-speed operation of the single impeller on the gas work to increase the pressure and speed of the gas, the completion of the gas transport, the gas along the radial flow through the impeller of the compressor.
Suitable for the market: biological fermentation with large gas volume, air separation industry, chemical, petroleum, natural gas, refrigeration industry, etc.
4. dry oil free air compressor:
through the high-speed operation of the double blade wheel to the gas work to increase the pressure and speed of the gas, the completion of the gas transport.
Advantages: high market share, brand effect, stable technology.
Disadvantages: high procurement costs, high energy consumption, high maintenance costs, and the risk of oil.
Suitable for the market: medicine, food, chemical industry, electronics and other industries that need clean compressed air pressure.
5. water lubricated single screw oil-free machine
with pure water as the compression medium, the sealed space formed by the star wheel, the compression shell and the screw groove is reduced by the rotation of the screw, and the compression of the air is formed.
Advantages: high cost performance, simple operation, low operating cost and simple maintenance.
Disadvantages: less market share, low brand awareness.
Suitable for the market: medicine, food, chemical industry, electronics and other industries that need clean compressed air pressure.
The following is the advantages of the equipment considered by the promoters of water-lubricated single screw oil-free machine. Since I do not have much experience in this area, I will announce it to you for reference only.
1. The water-lubricated air compressor uses pure water for lubrication and cooling, and the internal parts combination of the body is made of stainless steel.
2. 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 60 degrees, so the water is not in the body. Affected and scale problems.
3. The water-lubricated oil-free machine adopts high-end special bearings (graphite bearings), high efficiency, low head noise, and few bearing combinations (6 groups in total).
4. The water-lubricated air compressor directly sprays 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.
5. Water-lubricated oil-free machine, direct connection between the body and the motor, low speed below 3000 rpm, no speed-increasing gear, long bearing life and low maintenance cost.
6. Water-lubricated oil-free machine, air inlet with filter, pure water will also wash and filter impurities in the air, discharge clean air, greatly reduce the pressure of rear equipment, and reduce the cost of rear equipment consumables.
Shenzhen screw air compressor which is good, Shenzhen screw air compressor brand which is good screw air compressor compression components can ensure that the temperature of the equipment and compressed air temperature are maintained at a low state, Shenzhen screw air compressor which is good for internal components
Water-lubricated air compressor, since it is the use of water as a lubricant will certainly be rich in water vapor, then we need post-processing equipment to deal with the gas discharged from the water-lubricated air compressor. Refrigerated dryers, adsorption dryers and other dryer equipment, as well as filters, gas tanks, etc. can effectively eliminate water molecules in water vapor.
View detailsThe first reason for the failure of the shutdown of the air compressor is: the exhaust temperature of the unit is high 1, and the lubricating oil level of the machine is low; Solution: Add oil to the 1/2~2/3 position of the sight glass. 2. The cooling fan is not working properly; Solution: Troubleshoot the fan
qingdao air cooled air compressor price? qingdao air cooled air compressor price has conventional water cooled water lubrication air compressor and air cooled water lubrication air compressor two kinds, commonly used in qingdao is air cooled air compressor. The benefits of air cooling needless to say, simple maintenance, large air volume, and easy to clean up. For the screw air compressor, the simpler the structure, the easier the product maintenance!
View detailsThe publicity video of granklin air compressor is an advertisement produced by Shanghai granklin group for product promotion, so that customers can better understand the water lubricated oil-free screw air compressor produced by the company.
The post-processing equipment of the air compressor, the cold dryer and the suction dryer are one word different. Although the functions are similar, the use characteristics and the demand environment are very different. This time we will analyze the characteristics of the cold dryer, the difference between the cold dryer and the suction dryer, and how to make the correct choice.
Different brands of low-pressure screw compressors have different prices. Take granklin air compressor as an example. A 7.5kw small oil-based air compressor is about 20,000. This belongs to the middle and high grade, and other brands are either high or low. Of course, there are smaller, 4kw, or piston machines below 7.5kw.
Shanghai granklin two-stage compression air compressor, our two-stage compression air compressor adopts water-lubricated air compressor head, while saving energy and electricity, we make the whole machine oil-free, gas oil-free, make the gas pure and oil-free, can be applied to medical breathing grade compressed gas. The permanent magnet frequency conversion two-stage compression is superior to the ordinary power frequency single-stage in energy saving efficiency.
Air compressor often have some quality accidents, resulting in great economic losses and security risks. However, to sum up the reasons, it is not the quality problem of the air compressor itself, but the negligence of the maintenance of the air compressor in winter.
Granklin Group is a manufacturer specializing in the production of water-lubricated air compressors. The water-lubricated air compressors we sell are very suitable for medical equipment and hospital oxygen supply. Water lubricated oil-free air compressors are often used in hospitals, laboratories and other industries where the environment is quiet and the quality of the gas source is high.
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