2026-05-14Views：
Many people are concerned about how much oil the compressed air from the air compressor room contains. This value actually depends on the type of air compressor and the standards implemented. Different equipment, different industries, the gap can be very large.
this is the most common model in the industrial field. According to national standards, the liquid oil content in compressed air shall not exceed 5 mg/m & sup3;, and the oil vapor content shall not exceed 0.5 mg/m & sup3;. In actual operation, under normal conditions, the exhaust oil content of the oil injection screw machine is generally controlled at about 3ppm, that is, about 3 mg of oil per cubic meter of air. If it exceeds this value, the industry is usually called "running oil" or "flying oil", indicating that there may be a problem with the oil and gas separation system.
according to ISO 8573-1, the highest cleanliness level of oil-free compressed air is Class 0, and the residual oil content is required to be less than 0.01 mg/m & sup3;. The oil-free machine mentioned here includes an oil-free water-lubricated air compressor. This kind of equipment uses water instead of lubricating oil to complete sealing and cooling. The output gas itself does not contain oil, which can meet the scenes with strict requirements on gas source cleanliness such as food, medicine and electronics.
if you don't have a professional testing instrument at hand, you can take a dry paper towel and blow it against the air compressor exhaust port for three to five minutes. The paper towel does not change color obviously, indicating that the oil content is basically normal. If the paper towel is yellow or even oil drops appear, the oil content has exceeded the standard, and the oil and gas separator and oil return system need to be checked.
Generally speaking, the oil content of compressed air in ordinary air compressor room is usually 3~5 mg/m & sup3; In this range, the production line that requires the quality of the air source will press this value to 0.01 mg/m & sup3 through the oil-free water lubrication air compressor or the precision degreasing equipment at the back end. Even lower. When selecting the type, the actual demand of the gas end should be clearly defined, and then the equipment should be matched, so that the oil content will not be wasted.
The main differences between the cold dryer and the suction dryer are reflected in the following aspects: working principle: the cold dryer achieves the purpose of water removal by reducing the temperature of the compressed air, while the suction dryer uses the principle of pressure swing adsorption to remove the saturated compressed air from the upstream
The oil content standard in compressed air is an important indicator to measure air quality, especially in industrial environments. This standard is essential to ensure the smooth progress of the production process and the stability and reliability of product quality. The following is a detailed standard for oil content in compressed air
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The presence or absence of oil in an air compressor generally refers to the amount of oil content in the gas discharged from the exhaust port of the air compressor. Oil containing machines generally have a higher oil content, while oil-free machines have an oil content of 0.01ppm. Therefore, this oil content is used to distinguish between oil containing and oil-free air compressors Choosing the appropriate air compressor based on the demand for gas sources in different industries can save operational costs for enterprises
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The drainage operation of the screw air compressor can be carried out through the following steps: manual drainage method: close the air compressor and release the pressure: tighten the drainage valve. Shut down the oil pump. Turn the relief valve knob counterclockwise to release the inside of the reservoir
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1. The air compressor oil shall be replaced every 2000 hours or 3 months after operation. It shall be replaced every time. First, clean the oil in the oil-gas separator, then clean the oil cooler oil, then init for 3 seconds, stop the machine, clean the oil in the inner cavity of the main engine head, add 2 liters of new oil, and then init
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