2026-04-10Views：
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, low-pressure screw machines are mainly divided into three types: dry screw, water injection screw and oil injection screw. Among them, dry screw and water injection screw have a wider application range due to their characteristics of exhaust oil-free (oil-free screw machines can be basically used in all fields where oil injection screw machines can be applied). Common oil-free low-pressure screw machines are applied in biological fermentation, pneumatic conveying, glass bottle blowing, LP spray gun, etc. HVoil injection screw machines, etc, it is also used in some pneumatic conveying fields where the conveying material is not afraid of oil, and fermentation is generally rarely used.
Regarding energy consumption, many people may think that the oil-injected low-pressure screw machine is more energy-efficient when looking at the sample data, but in fact it is just the opposite. Take 17m & sup3, which is commonly used for pneumatic conveying./min air-cooled air compressor as an example, the power of low-pressure oil-free dry screw shaft is about 54KW, and the specific power is about 3.2Kw/(m & sup3;/min), while the nominal power of low pressure oil injection screw machine is 55KW, however, the specific power can reach 4.5Kw/(m & sup3;/min), which is already very good. The brand that can really achieve this specific power is definitely a conscience brand.
The energy consumption of water spray low-pressure screw is basically close to that of oil spray screw machine, while the stability of water spray screw machine has been poor, including foreign brands, so it has always been non-mainstream. The main reason why the energy consumption of the oil injection screw machine is not good is that in order to maintain a good oil and gas separation effect, the system must maintain a minimum pressure (all oil injection screw machines have a minimum pressure valve, the reason is that), generally more than 3bar, even 4.5bar, which will inevitably lead to over compression. The oil-free dry screw does not need a minimum pressure valve and there is no over compression, and the energy consumption of the compressor is proportional to the pressure, therefore, the energy consumption of low-pressure oil-free dry screw is far better than that of low-pressure oil-injected screw machine.
The food industry has high requirements for the selection of oil-free air compressors. The oil-free air compressor used in the food industry is usually divided into non-contact, indirect contact and direct contact. No matter which one, it requires the purity and sterility of the air environment, and the reduction of microbial content is strict. Food health is directly related to the health of consumers. Once a bad air compressor is used, the impact on product quality, the threat to consumer health, and the impact on the company's reputation are very huge.
View details(1) To fully meet the gas consumption of gas equipment, the maximum gas consumption should be calculated according to the type and quantity of pneumatic equipment, and the gas consumption that may be increased in the future should be included, and then the air compressor that can meet the gas supply requirements of pneumatic equipment should be selected.
The water lubricated air compressor produced by Shanghai granklin group is widely used in metallurgy, machinery manufacturing, mining, electric power, textile, petrochemical, textile and other industries. Our cases cover all provinces and cities in China.
Granklin oil-free lubrication screw air compressor has low maintenance cost and is widely used in health, textile printing, painting, electronic instruments, sandblasting, nitrogen production, chromatographic analysis, food processing, PTEE bottle blowing and other fields. The main features of Grantklin oil-free screw air compressor are: reasonable structure, ideal force balance; no radial and axial force during operation, only rotational force. Single-stage compression ratio is high, the shape of the structure size is small: high speed light load, easy to establish hydrodynamic lubrication.
View detailsSuch as biology, medicine, electronics, food, medical, automotive, chemical and other fields, water, oil, dust, bacteria, etc. are required to reach a higher level, but the water, dust, bacteria in the compressed air can be solved by a series of post-processing equipment such as filters and dryers, and
Oil-free air compressor has two compression modes, water lubricated oil-free air compressor and dry oil-free air compressor. We need pure oil-free compressed air. Most of them purchase equipment in these two schemes. Water-lubricated air compressors are mature enough. Shanghai Granklin Group mainly produces water-lubricated air compressors.
View detailsScrew air compressors often have high exhaust temperature. What are the reasons for the high exhaust temperature? The details are as follows: the 1. lacks lubricating oil; the 2. oil filter is blocked; the 3. oil cooler is blocked; 4. the oil cut-off valve core Catton;
Which is better, single screw air compressor or twin screw air compressor? Let's analyze it. Principle: The single-screw air compressor uses a single-screw rotor to drive two symmetrically distributed star wheels to rotate, relying on the spiral groove and the inner wall of the shell to form a closed basic volume,
Why choose the water-lubricated air compressor of Shanghai Granklin Group, and what advantages do they have become the required conditions for purchasing choices? Screw air compressor parameters are too many and difficult to choose. We will know the advantages of the following water-lubricated air compressor.
View detailsWater lubricated single screw air compressor is an oil-free air compressor series, which uses water as the lubricating medium, which fundamentally solves the problem of environmental pollution caused by lubricating oil. Compared with other oil-free air compressors, it has a simple and compact structure; low speed, vibration and noise
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