Analysis of the Causes of Oil Leakage from Air Filter Port of Screw Air Compressor

The main reasons for the oil leakage from the air filter port of the screw air compressor are as follows:

1. Mainly due to abnormal shutdown, the unit is shut down under pressure, so that the intake valve is not closed in time or is not sealed, and high-pressure oil and gas are ejected from the intake valve (such as power failure shutdown, emergency stop shutdown).

2. The counterweight of the intake valve or the sealing surface of the one-way valve is dirty, and the sealing surface is damaged or stuck, which will also cause the air filter to return oil.

3. The exhaust gas of the equipment has a high oil content. Some models that are discharged to the air filter have oil in the air entering the air filter from the dump valve, resulting in oil in the air filter. At this time, it is often accompanied by oil in the exhaust gas.

4. If the oil level of the oil and gas barrel is too high, when the temperature of the screw air compressor unit is too high, and the shutdown relief valve is discharged too quickly, due to the high temperature and rapid pressure change during high-pressure emergency stop, if the screw oil foaming property is poor, It will cause a large number of air bubbles to pour into the oil, resulting in more oil in the discharge pipe, and it is easy to cause oil return from the air filter port. At the same time, it is accompanied by a large oil content in the exhaust gas.

The above are the main reasons for the oil leakage from the air filter port of the screw air compressor. The failure of the screw air compressor will not only affect its service life and the personal safety of the operator, but also have a certain impact on production. Therefore, it is necessary to understand the faults of screw air compressors and how to troubleshoot screw air compressors.

Sollant Group-Professional Compressed Gas Solutions Provider