In modern poultry and livestock operations, effective ventilation is critical for animal health, productivity, and profitability. Our Butterfly Cone Exhaust Fan, also known as the butterfly blade cone fan or bell-mouth fan, represents the pinnacle of negative pressure ventilation technology. Featuring a unique front double-door opening system and an extended cone (air funnel) design, this fan delivers exceptional airflow performance while minimizing energy consumption .<\/p>\n
The fan derives its name from the distinctive butterfly-style shutters that open outward when the fan operates, creating a sleek, aerodynamic profile that reduces wind resistance and maximizes exhaust efficiency. When multiple fans are used in a coordinated system, they create powerful negative pressure ventilation that effectively cools and refreshes even the largest poultry houses, livestock barns, and greenhouses .<\/p>\n","protected":false},"excerpt":{"rendered":"
How the Butterfly Cone Fan Works
\nThe butterfly cone fan operates on the principle of negative pressure ventilation:<\/p>\n
Exhaust: The fan pulls air out of the building through the cone-shaped housing<\/p>\n
Negative Pressure: This creates a vacuum effect inside the structure<\/p>\n
Air Intake: Fresh air is drawn in through controlled inlets (such as side wall inlets or cooling pads)<\/p>\n
1. Butterfly-Style Double Door System
\nThe signature feature of this fan is the front double-door opening mechanism:<\/p>\n
Dual-door design Reduces wind resistance; opens smoothly with minimal pressure loss
\nRubber sealing device Ensures airtight closure when fan is off; prevents backdraft and pest entry
\nSelf-cleaning operation Doors open and close with each cycle, preventing dust accumulation
\nImproved efficiency Compared to standard shutters, butterfly doors increase operating efficiency by 15-20%
\n2. Extended Cone (Air Funnel) Design
\nThe bell-mouth or cone-shaped housing provides significant performance advantages:<\/p>\n
Increased exhaust pressure: The tapered design accelerates airflow, creating higher static pressure capability<\/p>\n
Improved air velocity: Air is channeled and accelerated through the cone for maximum exhaust efficiency<\/p>\n
Reduced turbulence: Smooth aerodynamic profile minimizes air resistance<\/p>\n
Better long-range exhaust: Ideal for tunnel ventilation systems requiring air movement over long distances<\/p>\n
3. High-Performance Fan Blades
\nAdvantages Non-deforming, non-breaking, self-cleaning, dust-resistant, attractive appearance<\/p>\n
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