@Air Compressor
2025-03-31
Compressed air requirements for general automation equipment
The requirements for compressed air for ordinary automated equipment need to be comprehensively consideredPressure, flow, cleanliness and drynessThe four core indicators, the specific standards are as follows:
1. Key parameter requirements
| indicators | Typical scope/standard | impact |
|---|---|---|
| working pressure | 0.5-0.8 MPa (required for most cylinders/valves) | Insufficient pressure can cause slowness or failure of actuators |
| instantaneous flow | The total peak air consumption of all pneumatic components needs to be covered | Insufficient flow may cause pressure drops and equipment jams |
| dew point temperature | ≤-20℃（ISO 8573-1 Class 4） | Excessive water content may lead to cylinder corrosion and freezing and clogging in winter |
| oil content | ≤0.1 mg/m³（ISO 8573-1 Class 1） | Oil-contaminated products (such as food packaging, electronic components) |
| particulate matter | ≤1 μm（ISO 8573-1 Class 2） | Dust may wear seals or clog nozzles |
2. Requirements for typical application scenarios
- Light load equipment(Such as rotating tables, small conveyor belts):
- Pressure: 0.4-0.6 MPa
- Flow: Calculated on demand, and it is recommended to reserve 30% margin.
- Medium load equipment(Such as handling robot, punching machine):
- Pressure: 0.6-0.8 MPa
- An air storage tank (capacity ≥ 20% of the compressor flow per minute) needs to be configured to cope with instantaneous peaks.
- High cleanliness needs(Such as pharmaceutical filling lines, electronic assembly):
- Multi-stage filtration (front + activated carbon + ultrafiltration) and freeze dryer need to be installed.
3. Air compressor selection recommendations
- flow calculation：
- Formula: Qtotal = ∑ (Q element × operating frequency) × safety factor (1.2-1.5)
- Example: 10 cylinders, each cycle consumes 0.1 m³, 5 times per minute → Qtotal = 10×0.1×5×1.2 = 6 m³/min.
- pressure matching：
- The main compressor pressure needs to be 0.1-0.2 MPa higher than the highest demand equipment.
- Post-processing configuration：
- dryer: Select freezing type (≤-20℃) or adsorption type (≤-40℃) according to the environmental humidity.
- filter: Three-level filtration (main pipeline + branch pipeline + equipment inlet).
4. Maintenance and monitoring
- Regular drainage: Check the water storage tank and filter every day.
- dew point detection: Tested quarterly using a portable dew point meter.
- energy efficiency monitoring: Install flow meters and power meters to ensure that the air compressor operates in an efficient range (loading rate 70%-90%).
summary: The compressed air system of ordinary automated equipment needs to aim at “stable pressure, sufficient flow, clean and dry”. It is recommended to calculate the requirements according to the equipment manual and select an air compressor package with post-processing capabilities. For critical equipment, it is recommended to add backup compressors or nitrogen backup systems.