What is the reason for the decrease in the displacement of the screw air compressor?
Views : 667
Author : Runningway
Update time : 2021-05-21 16:01:13
Air compressors are general-purpose mechanical equipment and are now widely used in various fields. Air compressors have large or small displacements due to the motor power and the length of the main shaft. There are many reasons for insufficient air compressors.
Let's analyze the reasons below:
1. The air compressor is too small
Many users do not know the specific gas consumption of their production at the beginning, so they choose the approximate type. At this time, the exhaust pressure cannot rise, and it is lower than the rated exhaust pressure, which cannot meet the normal gas use of the factory. At this time, you can check to see if there are any leaks in the pipeline. Close the valve behind the gas storage tank. If the unit can quickly increase the pressure and open the valve, the pressure will drop quickly and eventually reach a pressure point. This can confirm that the air compressor unit is too small. The displacement of the unit is less than the actual gas consumption of the production.
Solution: Add a new unit to make the air compressor's exhaust volume greater than 10% to 20% of the air consumption, the most scientific.
2. Whether to add gas equipment
After the air compressor has been used for a period of time, the air volume is obviously insufficient, and the pressure cannot be increased, and it is maintained at the offline position of the rated air consumption. At this time, you should first check whether there is any new air equipment. If there is a new air equipment, how much air consumption is, compare the air compressor unit to see if it can meet the requirements, if not, please add a new air compressor Unit, increase the displacement.
If there is no newly-added gas equipment, the exhaust volume is still not enough, first check the leakage of the pipeline. If there is no leakage point in the pipeline, it is the problem of the air compressor itself.
The insufficient displacement of the air compressor unit itself has the following problems:
1. Is the maintenance timely?
Air pressure and exhaust volume decrease. After eliminating the above possibility, firstly see whether the air compressor has been maintained and how long it has been maintained. If the environment is ideal, check whether the air filter is clogged when the air compressor is running for 2000 hours. Compression can be used if the air compressor is running for 2000 hours. Air dust removal, serious blockage, replace with a new air filter. In many cases, the exhaust volume of the air compressor decreases. There is no major problem. It is neglected to maintain, and the air filter of the air compressor is blocked. After replacing the new air filter, use it normally. In addition, in addition to the air filter, lubricating fluid and other filter elements are also critical. Check whether the lubricating fluid is within the standard range. If it is missing, please add it appropriately.
2. Whether the intake valve is fully open
The air compressor exhaust volume drops, check the unit, just maintain it, and eliminate the three filter and oil problems. This is the first check of the air compressor intake valve, remove the intake hose, turn on the air compressor, and watch the intake valve. Is the opening degree normal? The theoretical design service life of the intake valve is 100,000 operations. Because each manufacturer uses different brand batches and the quality is also different, the failure of the intake valve may cause the unit's exhaust capacity to decrease. If the intake valve cannot be fully opened when the air compressor is loaded, it can be concluded that the decrease in the exhaust volume is a failure of the intake valve and should be removed for maintenance or replaced.
3. Motor failure
After the above-mentioned troubleshooting of the intake valve failure, the unit displacement remains unchanged. It should be considered whether the motor is faulty. Due to a local short circuit in the motor coil or bearing wear, the motor speed is lower than the rated speed, which makes the air compressor displacement. If it drops, the motor coils, bearings, etc. should be checked and repaired, and the air compressor displacement should be tested after the repair.
4. The environment changes, resulting in a decrease in exhaust gas volume
The increase in altitude and the humid environment may cause the unit's exhaust capacity to drop. The higher the altitude, the thinner the air, the smaller the air production per unit time, the excessive moisture in the air, and the compressed air contains a lot of moisture. In the post-processing, water vapor is precipitated, resulting in reduced exhaust.
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