Negative Pressure Fiberglass Exhaust Fan for Coal Yard

The product details are as follows: - **Model No.:** JL-148/128/110 - **Usage:** For Air Conditioner - **Cooling Method:** Direct Cooling - **Blades Material:** FRP (Fiberglass Reinforced Plastic) - **Voltage:** 380V - **Power:** 0.75kW - **Trademark:** JL - **Transport Package:** Seaworthy Packing - **Specification:** CE Certified - **Origin:** China - **HS Code:** 8414809090 --- ### Product Features: 1. **Efficient and Quiet Design:** The fan is engineered with a well-optimized cone shape, providing high airflow while maintaining low noise levels. 2. **High-Quality Bearings:** Imported bearings ensure durability, reduce noise, and extend the service life of the unit. 3. **Durable Shutters:** Made from high-strength hot-galvanized steel sheets, these shutters are resistant to oxidation, lightweight, and do not deform easily. 4. **Strong Aluminum-Magnesium Alloy Wheel:** Ensures high strength and long-lasting performance. 5. **Stainless Steel Blades:** Designed with a mirror finish and injection-molded for superior quality, these blades offer large airflow and are resistant to distortion or breakage. 6. **Energy-Efficient Motor:** Equipped with a CCC-certified motor that meets IP55 protection and F-class insulation standards, ensuring safe and efficient operation. 7. **Maintenance-Free Cone Design:** The cone is shaped like a horn, eliminating the need for belt replacement during maintenance. 8. **Automatic Shutter System:** Utilizes air flow principles to prevent rainwater from entering the room, without requiring electricity or manual operation. --- ### How Negative Pressure Fans Work: Negative pressure fans operate based on the principle of air convection and negative pressure ventilation. They are typically installed in areas with poor ventilation. When running, they quickly remove stagnant hot air, odors, and smoke through the negative pressure effect. At the same time, fresh air is drawn in through doors or windows, creating a continuous airflow circulation. This process effectively improves air quality, cools the environment, and enhances the working conditions in workshops or industrial spaces. --- ### Technical Specifications Table: | Model Specifications | Diameter of Blades (mm) | Blade Rotational Speed (rpm) | Motor Rotational Speed (rpm) | Air Flow (m³/h) | Total Pressure (Pa) | Noise (dB) | Input Power (W) | Rated Voltage (V) | Height (mm) | Width (mm) | Thickness (mm) | |---------------------|--------------------------|-------------------------------|-------------------------------|------------------|---------------------|------------|------------------|--------------------|-------------|------------|----------------| | JLF-900 (30') | 750 | 630 | 1400 | 22,000 | 65 | ≤65 | 370 | 380 | 900 | 900 | 930 | | JLF-1100 (40') | 1000 | 600 | 1400 | 32,500 | 70 | ≤70 | 750 | 380 | 1100 | 1100 | 1150 | | JLF-1220 (44') | 1100 | 460 | 1400 | 38,000 | 73 | ≤70 | 750 | 380 | 1220 | 1220 | 1200 | | JLF-1380 (50') | 1250 | 439 | 1400 | 44,000 | 80 | ≤70 | 1100 | 380 | 1380 | 1380 | 1300 | --- ### Product Images: [Image: Negative Pressure Fiberglass Exhaust Fan for Coal Yard](http://i.bosscdn.com/uploads/6c/b5/04/b7bf6baacb2e88849505752752.jpg) [Image: Negative Pressure Fiberglass Exhaust Fan for Coal Yard](http://i.bosscdn.com/uploads/5a/cf/e6/d0edb28c4d0d49a4950947fd2c.jpg) [Image: Negative Pressure Fiberglass Exhaust Fan for Coal Yard](http://i.bosscdn.com/uploads/17/d3/4b/28b7fdd09f5dc14cab4caf6bee.jpg) This fan is ideal for industrial applications where effective ventilation and cooling are essential. It combines advanced engineering with user-friendly design to deliver reliable and efficient performance.

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Wuxi Changchen Technology Co., Ltd , https://www.wxchangchen.com