2026-04-09Views：
Comparison of advantages and disadvantages of oil-free compressor and oil-injected screw compressor
1, the use of the situation is not the same:
in the operation of the oil-free screw compressor, the lubricating oil is not in contact with the compressed gas, and the compressed gas is not polluted. The oil-injected screw compressor injects a large amount of lubricating oil during the compression process to achieve gas cooling, sealing and lubrication of the rotor. Therefore, the compressed gas contains a large amount of oil when discharged, and a post-treatment device is required to reduce the oil content of the gas.
2. The risks are different:
oil-free screw compressors do not affect the quality of the gas used by users because they do not contain oil in the compressed gas. Although the oil-injected screw compressor is processed by post-processing equipment, it still contains a small amount of oil. After a long period of operation, after reaching a certain level, the oil gradually accumulates in the network pipe, and is blown out by the compressed gas after a period of time, affecting the user's gas. Quality. In addition, its oil filter equipment, oil separator, pre-filter, post-filter, as the use of time increases, the efficiency will be significantly reduced, the oil content will increase, and the filter material has the risk of rupture, which there is an unpredictable risk.
High maintenance costs:
the maintenance point of the oil-filled screw compressor is larger than that of the oil-free machine. There are oil filter, oil and gas separator and three oil and gas filters. Oil and gas separator filter life of 4000 hours, oil filter life of 4000 hours, precision grade activated carbon oil and gas filter life of only 1000 hours. In addition, the lubricating oil of the oil-injected screw compressor is easy to be dirty, oxidized, and emulsified due to direct contact with the gas, and must be replaced regularly, otherwise it will affect the service life of the unit; the lubricating oil of the oil-free screw compressor is not in sufficient contact with the air, so L The service life of the lubricating oil is very long.
4. Operating expenses:
since the oil-injected screw compressor ensures the gas quality through several filters, the resistance loss is large and increases with the use time. The resistance is 1.01bar at the beginning and up to 1.5bar at the later stage. However, the oil-free machine is only 0.3bar. Therefore, the operating cost of oil-injected screw compressors is higher, and the work done is more than that of oil-free screw compressors.
5. Environmental pollution:
because the gas of the oil-injected screw compressor contains oil, and the condensed water also contains oil, direct discharge will cause environmental pollution, and the oil-free screw will not cause such a problem.
Generally speaking, the maintenance cycle of the air compressor should be determined according to the specific equipment and production environment, but under normal circumstances, the maintenance cycle of the air compressor is 1 to 2 times a year. Specifically, the cycle of dismantling the machine for a comprehensive overhaul is once a year, while some routine inspections are carried out.
Air compressors are widely used in factories, covering almost all aspects of factory production and operation. The following is a detailed summary of the main application areas of air compressors in the factory: 1. Power supply pneumatic tools and equipment: air compressors are pneumatic drills and pneumatic screwdrivers
The application of air compressor in sewage treatment industry is extensive and critical, mainly reflected in physical treatment, biological treatment, chemical treatment and auxiliary systems and other links, the following is a detailed summary of its application: 1. physical treatment stage suspended solids removal: air compressor lifting
Air compressors are used to compress gas. The compressor is similar in construction to a water pump. Most air compressors are reciprocating piston type, rotating blades or rotating screws, and their noise control mainly adopts three aspects: muffler, muffler tunnel and sound insulation technology.
The main function of the air compressor is to compress air into high-pressure air, and it is widely used in various industries and fields. The following is a summary of the main functions of air compressors and their specific application scenarios: 1. provide power machinery and pneumatic tools: compressed air can be used as a power source,
The "oil and gas content" in the air compressor refers to the content of the mixed oil (including liquid oil droplets, oil mist or oil vapor) in the compressed air, which is an important indicator of the cleanliness of the compressed air. If the traditional air compressor is lubricated with lubricating oil, the oil will
Answer: If the air compressor does not stop, it is necessary to check whether the pressure of the air compressor is normal, whether the pressure of the gas tank is normal, and whether the pipeline has any air leakage points. Whether the air consumption exceeds the air displacement of the air compressor, and the air compressor is used
Micro oil air compressor is not oil free air compressor. There is a clear distinction between them. Definition and working principle: Micro-oil air compressor, also known as oil mist air compressor, will spray a small amount of tiny lubricating oil vapor during air compression. These oil vapors and air
Permanent magnet air compressor is not a brand, but a type of air compressor. It refers to the use of permanent magnet synchronous motor to drive the compressor rotor, and adjust the power frequency of the compressor through frequency conversion technology to adjust the output pressure, flow and power of the compressor
Nitrogen is widely used in the semiconductor manufacturing process, mainly based on its unique physical and chemical properties and its irreplaceable role in many key process links. The specific reasons are as follows: 1. Chemical inertness: the core barrier for isolating pollution Nitrogen molecules are composed of two nitrogen atoms through three
2018 Granklin Group. All rights reserved 沪ICP备18000439号-2
