The oil injection volume refers to the quantity of oil introduced via the oil injection valve. For oil-injected screw air compressors, controlling this injection volume is critical. Typically, the oil injection valve is opened to 90% of its maximum capacity. Below are several methods for regulating oil injection in screw compressors.
1. Adjusting the oil injection valve: Screw compressors are typically equipped with dedicated oil injection valves or injectors. Modifying these components directly and rapidly influences oil injection volume. Controlling the injection quantity is achieved by adjusting the valve opening degree or the injector’s oil orifice size. The oil injection volumes for reputable compressor brands undergo repeated testing and experimentation to ensure both feasibility and economic efficiency.
2. Machine parameter configuration: Utilise the control system to manage corresponding parameters based on the factory-set specifications. Adjust lubrication system parameters to regulate oil injection volume.
3. Strict adherence to maintenance schedules: Follow the compressor manufacturer’s maintenance instructions, maintaining the machine according to the maintenance log, periodic servicing, and upkeep. This includes replacing valves, lubricating oil, filter cartridges, etc. Ensuring normal operation naturally guarantees oil injection volume is controlled to standard.
4. Monitoring systems: Advanced compressors feature intelligent monitoring systems. These systems continuously monitor the entire compressor system’s operational status, automatically adjusting oil injection volume according to standards via sensors and controllers.
Please note that oil injection volume must be adjusted according to machine specifications and on-site operating conditions. Excessive lubricant leads to overproduction of oil-gas mixtures, reducing compressor efficiency; insufficient lubrication compromises mechanical integrity, causing wear on critical components such as bearings and screw elements. Therefore, strictly adhere to the manufacturer’s accompanying operating manual or guidelines provided by after-sales service personnel for periodic maintenance and servicing of air compressors to ensure proper operation of screw compressors.