The oil-free air compressor does not need to be refueled in the compression chamber of the main engine. However, some mechanical transmission parts (such as motor bearings, gearbox, etc.) still need regular lubrication and maintenance. The following is a specific analysis:
1. host compression chamber: core design without refueling
- technical principle:
oil-free air compressor through special design to achieve oil-free lubrication, common technologies include: - water lubrication technology: Replace lubricating oil with pure water to form a water film on the surface of the screw or piston to reduce metal friction (such as water-lubricated oil-free screw air compressor).
- Air bearing/magnetic levitation technology: Support the rotor by high-pressure air or magnetic field to eliminate mechanical contact (such as oil-free silent air compressor).
- self-lubricating material: Use ceramic, PTFE and other wear-resistant materials to reduce the dependence on lubricating oil.
- advantage embodiment:
- compressed air pure: The oil content of the output gas is ≤ 0.01 mg/m & sup3;, which meets the Class 0 oil-free standards of food, medical, electronics and other industries.
- Simplified maintenance no need to replace the lubricating oil, oil filter, reduce the risk of oil pollution.
- Environmental protection and energy saving: Avoid the environmental pollution caused by the volatilization of lubricating oil and reduce energy consumption (the traditional oil air compressor needs to be cooled by lubricating oil, which has high energy consumption).
2. mechanical transmission parts: still need regular lubrication
- lubrication demand:
oil-free air compressor motor bearings, gearbox and other components still need to be lubricated to reduce wear, but the lubrication method is different from traditional models: - closed lubrication system: The lubricating oil is enclosed in a specific area and does not contact with compressed air (for example, the motor bearing uses long-term grease, and the maintenance period is as long as 1-2 years).
- Independent lubrication circuit: Some models supply oil to the transmission parts through independent oil circuits to prevent oil pollution from entering the compression chamber.
- Maintenance Points:
- periodic inspection: Check the lubrication of the transmission parts every month to confirm that there is no leakage or abnormal wear.
- Replacement on schedule: Replace the lubricating grease according to the manufacturer's recommendation (e. g. every 4000 hours or once a year).
- Use special oil: Lubricating grease compatible with the equipment must be used to avoid failure due to oil mismatch.
3. user operation suggestions
- no random refueling:
it is strictly prohibited to add lubricating oil to the main engine part of the oil-free air compressor, otherwise it may cause: - oil pollution: Lubricating oil enters the compression chamber, contaminates the output gas, and affects product quality (for example, the food packaging industry may cause product recalls due to oil pollution).
- Equipment damage: Oil accumulation may block the gas path and damage precision parts (such as screw rotor and cylinder wall).
- Daily maintenance focus:
- clean the filter: Clean the air filter every week to prevent dust from entering the compression chamber.
- Drain condensate: Drain the condensed water in the gas storage tank regularly to avoid water vapor corroding the pipeline.
- Check the seal: Check the seal status every month to prevent air leakage or external impurities from entering.
- Long-term storage requirements:
- dry environment: Store in a dry and well-ventilated place to avoid corrosion caused by moisture.
- Disconnect power supply: During long-term shutdown, disconnect the power supply and drain the gas and condensate in the gas tank.
