General screw compressor air oil standard is how much

General screw compressor air oil standard is not more than 3 mg/m & sup3;(ie 3ppm) this standard is based on the mechanical industry standards and equipment performance requirements, as follows:

1. standard basis

1. mechanical Industry Standard (JB/T6430-2014)
   it is clearly stipulated that the oil content of the output gas of the screw compressor equipped with oil-water separator shall be less than 3 mg/m & sup3;. The standard is the core index to evaluate the oil and gas separation effect of the compressor, which is directly related to the performance and operation stability of the equipment.

2. Equipment performance requirements
   oil-injected screw air compressor reduces oil content through oil separation technology. In actual operation, if the oil content exceeds 3ppm (ie 3 mg/m & sup3;), it is usually called "high fuel consumption" or "running oil and flying oil", which may cause equipment failure or post-processing system failure.

Influence of 2. oil content exceeding standard

1. equipment failure risk
   • increased burden on oil return system: Excessive oil content may cause premature saturation of the oil core, decrease the separation efficiency, and the oil cannot return to the nose in time, forming a vicious circle.
   • After-treatment system failure: When high oil content compressed air enters the cold dryer or adsorption dryer, the oil film will cover the surface of the copper tube of the heat exchanger, reducing the heat exchange performance, and even causing the equipment to fail to operate normally.
2. Increased operating costs
   • increased oil consumption: It is necessary to add oil frequently to maintain the operation of the equipment and increase the maintenance cost.
   • Energy waste: The aftertreatment system requires additional energy consumption to maintain performance due to oil blockage, reducing overall energy efficiency.

Common Causes of Excessive Oil Content in 3.

1. Oil return system problem
   • incorrect installation of oil return pipe: If the oil return pipe is not inserted into the bottom of the oil separator (1-2mm from the center of the bottom arc is recommended), or the oil return pipe is blocked by foreign matter, the separated oil cannot return to the nose.
   • Design defect of oil return pipe for example, the top of the oil return pipe penetrates the steel plate at the bottom of the oil part to form a bypass, so that part of the oil-gas mixture directly enters the air outlet without separation.
2. Abnormal working condition
   • long-term low-pressure operation: The exhaust pressure of the air compressor does not reach the rated value (e.g. rated 8kg/cm², actually only 5kg/cm²), resulting in too fast flow rate of the oil and gas mixture, too high oil mist concentration, and aggravating the oil load.
   • Overload operation: The air consumption is greater than the processing capacity of the equipment, or the oil processing capacity is too tightly matched with the exhaust gas, resulting in a decrease in the separation effect.
3. Inadequate maintenance
   • aging or damage of oil core: Failure to replace the oil core in time, or use inferior oil core, resulting in reduced separation efficiency.
   • Filter clogging: The post-processing filter core is used overtime and cannot effectively intercept the oil mist, which makes the oil content of the compressed air exceed the standard.

4. solutions and recommendations

1. optimizing the oil return system
   • adjust the position of oil return pipe: Make sure that the oil return pipe is inserted into the bottom of the oil separator 1-2mm to avoid tilting or shifting.
   • Clean the blockage of the oil return pipe.: Regularly check and clean the solid impurities in the oil return pipe to ensure smooth oil return.
2. Improve working conditions
   • avoid long-term low-pressure operation: Select an air compressor with appropriate rated pressure according to the actual gas demand, or contact the manufacturer to replace the oil separation product with matching low pressure.
   • Control air consumption: Reasonable planning of gas equipment to avoid overload operation and ensure that the oil treatment capacity matches the exhaust volume.
3. Strengthen maintenance
   • regularly replace the oil core: According to the requirements of the equipment manual, replace the oil core on time to avoid using inferior products.
   • Timely cleaning of filters: For users with high gas requirements, it is recommended to shorten the replacement cycle of the post-processing filter core to ensure the quality of compressed air.