What is the oil content of the air compressor at the outlet of the oil injection screw machine

The oil content of the air compressor at the outlet of the oil injection screw machine (I. e. oil injection screw air compressor) is an important performance index, and its specific value is affected by many factors, including the design of the air compressor, the working state, and the use of post-processing equipment. Here is a rigorous answer to that question:

1. General Standard

under normal circumstances, The oil content of the compressed air at the outlet of the oil-injected screw air compressor is not more 3ppm, That is, the oil content per cubic meter of compressed air does not exceed 3 mg. This standard is widely used in various industrial applications and is considered to meet the general requirements.

2. industry standards and specifications

1. ISO 8573-1: This is one of the important international standards for oil content testing of air compressors. According to this standard, the oil content of air compressors is divided into several levels, including oil-free state (≤ 0.01 mg/m & sup3;), low oil state (≤ 0.1 mg/m & sup3;) and normal state (≤ 1 mg/m & sup3;). However, for oil-injected screw machines, due to the characteristics of their working principle, it is usually difficult to reach the standard of oil-free or extremely low oil state.
2. Emission Standard of Pollutants for Air Compressors (GB/T 3785-2006): This is one of China's national standards, which stipulates that the oil content in the air discharge of the screw air compressor should not exceed 5mg/m³. Although this standard is relatively loose, it still puts forward clear requirements for the oil content of the air compressor.

3. Differences in Practical Applications

it should be noted that different oil injection screw air compressor models and application scenarios may have different requirements for outlet oil content. For example, in industries with extremely strict air quality requirements, such as medicine, food, and electronics, lower oil content is usually required. In addition, the use of air compressor status, maintenance, post-processing equipment efficiency and other factors will also affect the export oil content.

4. Measures to Reduce Oil Content

in order to reduce the oil content at the outlet of the oil-injected screw air compressor, the following measures can be taken:

1. selection of high quality oil and gas separator: The performance of the oil and gas separator directly affects the oil content of the export, so products with high separation efficiency and reliable quality should be selected.
2. Regular inspection and maintenance: Regularly inspect and maintain the air compressor to ensure the normal operation and sealing performance of each component and avoid oil leakage.
3. Use suitable lubricating oil: Select the lubricating oil matched with the air compressor to ensure that it can still maintain good stability and lubricity under high temperature and high pressure.
4. Configure post-processing equipment: Equipped with precision filters, dryers and other post-processing equipment at the outlet of the air compressor to further remove the oil and moisture in the compressed air.

In summary, the oil content at the outlet of the oil-injected screw air compressor is usually not more than 3ppm, but the specific value is affected by many factors. In practical applications, the appropriate air compressor model and post-processing equipment should be selected according to specific needs and conditions, and effective measures should be taken to reduce the export oil content.