Summary:There is a valve on the oil and gas separator of the screw air compressor, which can keep the internal pressure of the separator under a certain press...
There is a valve on the oil and gas separator of the
screw air compressor, which can keep the internal pressure of the separator under a certain pressure, so that the oil-containing compressed air can be better separated and reduce the loss of oil; at the same time, when the internal pressure of the air compressor is When the pressure is greater than the upper limit of the minimum pressure valve, it acts as a pressure relief. That's right, it's the minimum pressure valve. If the minimum pressure valve fails, it will not be able to reflect its function. In this regard, this article summarizes the common causes of minimum pressure valve failure.
The air medium is dirty or foreign impurities have entered. The solid impurity particles violently impact the minimum pressure valve driven by the high-pressure airflow of the
air compressor, causing damage to the parts; or the dirt is trapped between the sealing surfaces, making the minimum pressure valve invalid.
There is water in the compressed air or the air compressor gas-liquid separator is faulty. It will cause hydraulic shock to the minimum pressure valve, and the minimum pressure valve will fail due to the additional impact, which is mainly manifested in the abnormal sound of the air compressor during operation.
Excessive compressor oil in the cylinder. The air compressor cylinder is lubricated with oil. If too much oil is injected, the excess lubricating oil will form oil viscosity in the minimum pressure valve, causing the valve plate to break due to delayed closing or opening.
The working conditions vary greatly. Each minimum pressure valve of the air compressor is designed according to a specific working condition. The working condition of the air compressor fluctuates greatly or deviates from the design value for a long time. In such a case, it will soon fail.
Rebooting after a long period of inactivity. After the air compressor is placed for a period of time, the liquid carried by the cylinder lubricating oil or compressed air will accumulate in the cylinder, which will not only cause the cylinder and the minimum pressure valve to corrode, but also cause the accumulation of liquid in the cylinder to be discharged during cold start. Failure to clean the minimum pressure valve will cause the cylinder to start with liquid, which is likely to cause liquid hammer and oil sticking.
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