The price of Roots blower is greatly affected by factors such as model, parameters, material, brand, etc. The following is a detailed price analysis and selection suggestions:
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**1、 Overview of Price Range (Domestic Mainstream Brands)**
|* * Airflow Range * * | * * Pressure Rating * * | * * Power Range * * | * * Price Range (10000 yuan) * * | * * Typical Models * *|
|----------------|-------------------|---------------|---------------------|-------------------|
| 1-5 m3/min | 9.8-49 kPa | 1.5-7.5 kW | 0.5-1.8 | -50, HC-501S |
| 5-20 m3/min | 49-78.4 kPa | 11-45 kW | 1.8-5.5 | -100, HC-801 |
| 20-50 m3/min | 58.8-98 kPa | 45-110 kW | 5.5-12 | -150, HC-1501 |
| 50-100 m3/min | 78.4-98 kPa | 110-250 kW | 12-25 | -200, HC-2001 |
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**2、 Key factors affecting prices**
1. * * Technical parameters**
-For every 9.8 kPa increase in pressure, the price increases by 10-15%
-Under the same air volume, the three bladed model is 20% more expensive than the two bladed model (with lower noise)
2. * * Material differences**
-* * Cast Iron Standard Type * *: Basic Price
-Stainless steel anti-corrosion type: Price multiplied by 1.5-2 times (such as 316L material)
-* * Titanium alloy special type * *: Price multiplied by 3-5 times (used for strong corrosive media such as chlorine gas)
3. * * Brand premium**
|* * Brand Level * * | * * Domestic Representative * * | * * Import Representative * * | * Price Difference (vs Domestic) * *|
|-------------|-------------|---------------|-------------------|
|Economic | Changsheng | - | -|
|Mid to high end | Changsheng | Taiwan |+30-50|
|High end | - | (German) |+200-300|
4. * * Additional configurations**
-Variable frequency control system:+8000-20000 yuan
-Explosion proof certification (Ex d Ⅱ BT4):+ 15-25
-Muffler/filter set:+0.5-15000 yuan
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**3、 Typical selection and budget for different industries**
1. * * Sewage treatment aeration**
-Model:- 100（15 m3/min, 58.8 kPa）
-Configuration: Cast iron shell+ordinary muffler
-Budget: ≈ 42000 yuan
2. Aquaculture oxygenation**
-Model: HC-601S（8 m3/min, 39.2 kPa）
-Configuration: Stainless steel shell (anti seawater corrosion)
-Budget: ≈ 38000 yuan
3. Chemical gas transportation**
-Model: Delta Blower（20 m3/min, 98 kPa）
-Configuration: PTFE coated rotor+ATEX explosion-proof
-Budget: ≈ 280000 yuan (imported)
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**4、 Cost optimization suggestions**
1. * * Accurate selection**
-Avoid "big horses pulling small cars": choose the actual flow according to your needs, and leave a margin of 10
-Low pressure scenarios (<49 kPa) can choose a two bladed design to reduce costs
2. * * Domestic substitution**
-Domestic mid to high end brands (such as) have approached imported performance in working conditions below 98kPa, with a price of only one-third
3. * * Long term cost calculation**
-Example: A 22kW fan (domestic 50000 yuan vs imported 150000 yuan)
-Electricity fee is 0.6 yuan/kWh, with an annual operation of 6000 hours:
-Domestic annual electricity cost ≈ 22 × 6000 × 0.6=79200 yuan
-Import (high efficiency 5) ≈ 75200 yuan
-Investment payback period: (15-5)/(7.92-7.52)=25 years (not cost-effective for imports)
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**5、 Procurement precautions**
1. * * Verify performance curve**
-Request the manufacturer to provide a measured flow pressure curve (compared to GB/T 1236 standard)
2. * * Warranty Terms**
-The warranty for core components (rotor/gear) should be ≥ 2 years, and the warranty for bearings should be ≥ 1 year
3. * * Supporting Services**
-Prioritize suppliers who provide free installation and debugging services
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**6、 2023 market reference price**
-* * Small fan * * (<5 m3/min): 5000-20000 yuan
-Medium sized fan (20-50 m3/min): 50000 to 120000 yuan
-Large scale fan (>100 m3/min): 200000 to 500000 yuan
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**Summary: The price of Roots blowers ranges from 5000 yuan to 500000 yuan. It is recommended to choose a cost-effective configuration based on actual working conditions. For critical process steps (such as chemical explosion prevention), priority should be given to reliability; Conventional use (such as sewage aeration) can focus on economy. Before purchasing, it is necessary to request * * performance test reports * * and compare quotes from three or more suppliers.
