The following is a detailed classification of common models and parameters of Roots blowers, covering mainstream brands and universal models for selection reference:
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**1、 General Model Naming Rules**
The model codes of different manufacturers may vary slightly, but usually include the following information:
-* * Caliber * *: such as 50, 80, 150 (indicating import and export diameter in mm)
-* * Series * *: such as JAS, L, etc. (customized by the manufacturer)
-Pressure rating: such as 0.5, 0.8 (unit bar)
-* * Structural form * *: A (direct connection), B (belt drive), C (two-stage series connection)
**Example * *:
`-150 0.5B 'represents a Roots blower with a diameter of 150mm, pressure of 0.5bar, and belt drive.
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**2、 Comparison of mainstream brand models and parameters**
**1. Common brands**
|* * Brand/Series * * | * * Model Example * * | * Flow Range (m3/min) * * | * * Pressure Range (bar) * * | * * Power (kW) * *|
|--------------|--------------------|----------------------|-------------------|---------------|
| **（）** | -50~350 | 0.5~120 | 0.1~0.9 | 0.75~160 |
| **（BST）** | -65~300 | 1.2~80 | 0.1~0.8 | 1.5~132 |
| **（ZHANGGU）** | JMJ-80~250 | 2.5~60 | 0.3~0.7 | 3~90 |
**2. Imported brand**
|* * Brand * * | * * Model Example * * | * Flow (m3/min) * * | * * Pressure (bar) * * | * * Features * *|
|--------------|--------------------|---------------------|-------------------|----------------|
|* * * * | GM Series | 1~200 | 0.5~1.0 | Low Noise|
|* * Japanese Anlet * * | 3H series | 0.5~50 | 0.2~0.7 | Energy saving design|
|Gardner Denver, USA | RBS Series | 5~150 | 0.3~1.2 | Industrial grade Durable|
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**3、 Detailed Parameter Classification Table**
**1. Small Roots blower (<10m3/min)**
|* * Model * * | Flow rate (m3/min) | Pressure (bar) | Power (kW) | Applicable scenarios|
|-----------|-------------|----------|----------|-----------------------|
|-50 | 0.5~2.5 | 0.1~0.5 | 0.75~3 | Laboratory, small aeration|
|-65 | 1.2~3.0 | 0.2~0.6 | 1.5~5.5 | Aquaculture, pneumatic conveying|
**2. Medium sized Roots blower (10~50m3/min)**
|* * Model * * | Flow rate (m3/min) | Pressure (bar) | Power (kW) | Applicable scenarios|
|-----------|-------------|----------|----------|-----------------------|
|JMJ-150 | 15~30 | 0.3~0.7 | 15~37 | Sewage treatment, cement transportation|
|RBS-125 | 20~45 | 0.5~1.0 | 18~45 | Chemical process, vacuum adsorption|
**3. Large Roots blower (>50m3/min)**
|* * Model * * | Flow rate (m3/min) | Pressure (bar) | Power (kW) | Applicable scenarios|
|-----------|-------------|----------|----------|-----------------------|
|-350 | 80~120 | 0.3~0.8 | 90~160 | Steel plants, large-scale pneumatic conveying|
|GM-200L | 100~200 | 0.5~1.0 | 110~250 | Petrochemical and blast furnace blower|
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**4、 Key parameters for selection**
1. * * Traffic * *: Choose according to actual needs (with a reserved margin of 10-20).
2. * * Pressure * *: It is necessary to match the system resistance to avoid overpressure operation.
3. * * Power * *: It is positively correlated with flow rate and pressure, and the motor load rate needs to be checked.
4. * * Transmission mode * *:
-* * Direct connection * *: High efficiency, suitable for fixed speed.
-Belt type: adjustable speed, easy to maintain.
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**5、 Special Model Description**
1. * * Double stage series Roots blower**
-* * Model Example * *:- 200C (suffix "C" indicates dual level).
-Pressure: up to 1.0~1.2 bar (requires an intercooler).
2. Explosion proof Roots blower**
-Model Mark: Ex or DII BT4 (e.g. -150Ex).
-* * Applicable scenarios * *: Flammable and explosive environments such as chemical and coal mines.
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**6、 Selection suggestions**
1. * * Consult the manufacturer * *: Provide specific operating conditions (gas composition, temperature, altitude, etc.) to obtain accurate models.
2. Energy Efficiency Comparison: Imported brands have high efficiency but are expensive, while domestic brands offer better cost-effectiveness.
3. Compatibility of accessories: Whether vulnerable parts such as gears and bearings are universal.
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**Attachment: Parameter Quick Reference Table (Partial Models)**
|Model | Flow rate (m3/min) | Pressure (bar) | Speed (rpm) | Weight (kg)|
|------------|-------------|----------|----------|----------|
| -80 | 5~10 | 0.4 | 1450 | 250 |
| -100 | 8~15 | 0.5 | 1750 | 320 |
| GM-80L | 10~20 | 0.6 | 1480 | 400 |
If you need a complete model manual or selection calculation, you can provide specific requirements for further matching!
