Air compressors are the lifeblood of factory production, and regular maintenance and maintenance of Atlas air compressors is the prerequisite to ensure their normal operation. The main engine is the core part of the air compressor, which is in a high-speed operation state for a long time, similar to most running machines, which must be preventive overhaul after running for a certain time or years, because the air compressor main engine will have the following problems after a long time of high-speed operation: the distance between the Yin and Yang rotors of the main engine increases. The direct consequence is that the compressor leakage (that is, back leakage) increases in the process of compression, and the compressed air volume of the discharge machine becomes smaller. Reflected in the efficiency of the compressor compression efficiency is reduced.

B. The gap between the rotor and the rear end cover and the bearing increases, which will mainly affect the sealing and compression efficiency of the compressor, and will have a great impact on the service life of the rotor, because many mechanical failures are caused by the gap between the bearing and the spindle.

(2) Wear increases

As we all know, as long as the machinery is in operation there are wear, under normal circumstances because of lubrication fluid lubrication, wear will be reduced a lot, but long-term high-speed operation, wear is slowly increasing. Take Swedish SKF bearings as an example: under almost impossible conditions (such as long-term idling, clean enough lubrication, good enough cooling system, and use of ambient temperature, humidity, etc.), it can only be guaranteed for a few years. As far as the compressor host is concerned, in addition to the bearing, there are other parts of the wear. If the correct preventive measures are not taken for minor wear, it is easy to increase wear and cause damage and wear of other major components.

(3) Component deformation

The air compressor host is the core compression component of the compressor, and its internal components are in a high temperature and high pressure environment for a long time, coupled with high-speed operation, there will be deformation of parts for a long time. At the same time, the cause of deformation and the use of environmental factors, and the air compressor generally used in the environment of the air will have dust and impurities, these small solid substances into the machine, accumulated over time if the formation of a larger solid block, it is possible to cause Yin and Yang rotor deformation, gap increase, serious will lead to the host stuck.

(4) Parts damaged

The main vulnerable parts in the main part of the air compressor are: various gaskets, seals, shaft oil seals, etc., especially the shaft oil seals, which are in the environment of high temperature, high pressure, and high-speed operation for a long time, and their service life ratio is greatly shortened. The direct consequence of its damage is to cause oil leakage of the compressor, if it is not found in time, it will cause the Yin and Yang rotor and bearing to burn due to lack of lubrication.

(5) Cost increase

Here costs refer to maintenance costs and electricity costs. Because the main engine of the air compressor has not been overhauled for a long time, the wear of the components increases, and some worn impurities remain in the main engine chamber, which will shorten the life of the lubricating fluid. At the same time, the use time of the oil and gas separator core and the oil filtration period is greatly shortened due to impurities, resulting in an increase in maintenance costs. In terms of power cost, the increase of friction and the decrease of compression efficiency will inevitably lead to the increase of power cost. In addition, the decrease in gas volume and compressed air quality caused by the compressor host will also cause an indirect increase in production costs.

In summary: The consequences that may be caused by no overhaul of the air compressor host after long-term operation will not only cause serious damage to the compressor body, but also have serious security risks. First of all, there will be friction between the screw inside the host and the front and back end faces, between the screw and the host housing, the motor load increases sharply, the serious consequence is that the screw is locked even the host is scrapped, if the motor protection response is not sensitive or failure may lead to the motor burn.