poultry ventilation fan Butterfly Front BI door type

Specifications

a balance of performance ,features and value come with SAANHE New Butterfly fan.these fans are equipped with a simple Butterfly Style shutter structure to improve fan performance and stability .this innovative design eliminates small shutter blades,which are prone to dust buildup .the practical Butterfly Style front closure shutter doors  also offer protection against harsh weather conditions such as wind and moisture while the fan is not in use.during operation ,the air forces the shutter doors open.

the butterfly fan uses its magnetic shutter panel ring to alleviate movement of the shutter while not in use .the surface edge of the Butterfly shutter is drastically smaller than conventional louvered shutters ,thus improving fan performance.

belt drive fans come standard with high quality greasable pillow block bearings and an automatic styles belt tensioner to ensure proper bellt tension.

 the fan adopts advanced frontward open system,butterfly type ,with two semicircle shutter doors,wind resistence is small ,good air-tightness and high efficiency.

for the cone part ,adopt new design ,plug-type connection ,not need many bolts and nuts for tightening as before,intensity of labor is reduced ,also improve aesthetic results of fan.

the belt tensioner device made of aluminum -magnesium alloy ,non-deforming ,long service life .this device make the belt inside tight up,effective for avoiding the belt distortions in reverse direction ,so prolong the belt life time ,saving cost .

when the two semicircle shutter doors close ,the rubber sealing ring make good air -tightness .in different condition ,not run all the fan,the air could pass through the space of stop fan ,use this type fan,could avoid this problem .ensure air pass through the evaporative cooling pads or airinlet only ,so that greatly improve the fan efficiency .(as compared with different type of same size fan,improve efficiency 15-20%)

the fan motor installed on top left corner ,effective protection of the motor .avoid wind resistence ,and the motor panel connection is reasonable ,fixing fan frame more stronger.