2026-04-10Views：
Prospective Industry Research Institute "2014-2018 China air compressor industry production and marketing demand forecast and transformation and upgrading analysis report" data show that the western developed countries screw air compressor market share of about 80%. The Chinese market is expected to grow at an average annual rate of 15%.
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 air compressors and water lubricated air compressors.
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 can also be higher than that of a single screw water-lubricated air compressor.
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.
For the air compressors used in waste incineration, the power compressors for small and medium-sized enterprises are mainly small displacement, and the flow rate is mostly below 3m 3/min. The market share accounts for "half of the country" of screw compressors, and the stock market reaches millions of units. The screw relies on the gap to seal the gas and does not have good performance in the small flow range. Small and medium-sized enterprises are cost-sensitive users, very much hope to reduce the operating costs of small displacement screw compressors, small displacement screw compressor low energy efficiency has become a pain point for small and medium-sized enterprises.
View detailsGranklin screw air compressor without oil and water lubrication 1. The oil-free design adopts water lubrication, the design of all stainless steel main machine and high-precision processing technology make water become the core of the well-deserved oil-free compressor; 2. The main machine adopts medical 304 stainless steel precision high-pressure casting, which will never rust; 3. Fully computer-controlled automatic water supplement system, all-round system operation detection, and completely oil-free exhaust quality, let the oil-free air flow;
View detailsWith the continuous development and progress of society, energy saving has become a topic of concern to people. All walks of life are taking active and effective energy-saving measures. Nak Electromechanical is committed to the energy-saving transformation of air compressors and the recovery of waste heat from air compressors. In terms of technical engineering, the following experience is shared with everyone:
Granklin's oil-free air compressor covers the low-pressure and medium-pressure series. Water lubricated air compressor products from 0.2 Mpa-4Mpa pressure, power to see the motor power. Granklin oil-free air compressor models are divided according to motor power, and air-cooled or water-cooled.
View detailsBefore, I saw a piston machine with a price of 200 pieces on a B2B platform. When I saw this price tag, I didn't dare to believe it. Because even a small piston machine cannot be bought for 200 yuan. As we all know, the main cost of air compressor is from the host.
Minor maintenance only needs to replace the air compressor oil and oil filter, which is usually replaced after 500 hours of operation of the new machine. Major maintenance is carried out about 3000 hours of operation of the machine, and the air filter element of the air compressor, oil and gas separator core, motor grease, etc. Electric shift
Air compressor is the main equipment in industrial production. The production of all walks of life is inseparable from air compressor. With the development of science and technology, many industries have put forward higher requirements for air compressor. They require the air compressed by air compressor to be cleaner. In order to achieve this effect, we need to use more functional air compressor equipment, which is oil-free screw air compressor. So how much do you know about oil-free screw air compressor?
There are so many domestic air compressor manufacturers, and the number is large. Before purchasing, it is best to look at the factory scale, production capacity, and various certifications and user cases of the product, and evaluate whether the air compressor manufacturer can meet its own needs.
View detailsFor 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.
Granklin Group is a domestic manufacturer of self-produced water-lubricated air compressors. We can achieve a pressure of 0.15-4Mpa. Water-lubricated air compressors can provide pure oil-free compressed air for enterprises. Energy saving inverter control of the air compressor and the traditional control of the air compressor, the energy saving version is the most important and the most important, according to the demand for compressed air to adjust the supply of air compressor running state.
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