7 reasons for high oil consumption of air compressors

7 reasons for high oil consumption of air compressors

Run oil

In our daily work, we often encounter the problem of running oil in air compressors. In addition to the quality of the oil content, what other reasons can cause running oil? Engineers have summarized several reasons that can cause running oil in practice. The following okmarts .com share with you.

　　1　The design of oil and gas separation tank is not standardized

Some air compressor manufacturers, when designing oil and gas separation tanks, the design of the primary separation system is unreasonable, the primary separation effect is not ideal, the concentration of oil mist before the oil is high, the oil load is too heavy, and the processing capacity is insufficient, resulting in fuel consumption Too high. After buying such a product, no matter how good the operation technology is, there is no way!

　　2　Too much fuel

　　 The amount of fuel added exceeds the normal oil level, and part of the engine oil is taken away with the airflow, resulting in excessive fuel consumption. The simple reason is that some people are careless and careless.

　　3　 uses a large amount of air, overload and low pressure use

Low-load use means that when the user uses the air compressor, the exhaust pressure does not reach the rated working pressure of the air compressor itself, but it can basically meet the gas requirements of some corporate users, for example: corporate users add gas equipment , The increase in air consumption makes the air compressor's exhaust capacity and the user's air consumption unable to reach a balance. Assuming that the air compressor has a rated exhaust pressure of 8kg/cm, the actual pressure is only 5kg/cm or even lower. The machine is under load for a long time and cannot reach the rated pressure of the machine, resulting in an increase in fuel consumption. The reason is that under the condition of constant displacement, the flow rate of the oil and gas mixture increases when passing through the oil, and the oil mist concentration is too high, which makes The oil load increases, which eventually leads to high fuel consumption.

　　4　 oil return line blocked

When the oil return pipeline (including the one-way valve on the return pipe and the return filter screen) is blocked by foreign matter, the oil condensed at the bottom of the oil separator after separation cannot return to the nose, and the condensed oil droplets are blown up by the airflow. It is taken away with the separated air. These foreign objects are usually caused by solid impurities dropped during installation.

　　5　 oil return check valve is damaged

If the oil return check valve is damaged (from one-way to two-way), the internal pressure of the oil separator tank will pour a large amount of oil back into the oil separator through the oil return pipe after the machine stops. The oil inside the oil separator will not be able to The machine head is sucked back in time, causing part of the oil to run out of the air compressor with the separated air (this situation is common in machines that do not have an oil circuit stop valve and a machine head exhaust outlet check valve)

　　6 Improper installation of return pipe

When replacing, cleaning, and repairing the air compressor, the oil return pipe is not inserted to the bottom of the oil separator (reference: 1~2mm from the bottom of the oil separator is better), resulting in the separated oil cannot return to the machine head in time, and the accumulated oil will follow Ran out with compressed air.

　　7　 minimum pressure valve failure

If there is a leakage point in the seal of the minimum pressure valve or the minimum pressure valve is opened in advance (due to the different opening pressures designed by various manufacturers, the range is usually between 3.5 and 5.5kg/cm), then the machine will establish an oil and gas tank in the early stage of operation The pressure time will increase. At this time, the gas oil mist concentration in the low-pressure state is high, the flow rate is fast when passing through the oil, the oil load is increased, the separation effect is reduced, and the fuel consumption is high.