275 Galvanized Layer Automatic 50 Butterfly Cone Fan

（1）HNP 50 butterfly cone fan

1.Suitable for ventilation of high-negative pressure chicken coops with a negative pressure range of 0-100pa;

2.The automatic tensioning device used can improve the transmission efficiency and reduce the maintenance frequency;

3.The support structure is added to the back-end protective net, which enhances the strength of the protective net;

4.The narrowed air duct is optional, which is suitable for a poultry house with compact gable wall space.

（2）50 butterfly cone fan

1.Suitable for the ventilation and cooling of chicken coops, stable operation;

2.Fan leaves are stainless steel material, bright surface, with self-cleaning function;

3.The automatic tensioning device used can improve the transmission efficiency and reduce the maintenance frequency;

4.The narrowed air duct is optional, which is suitable for a poultry house with compact gable wall space.

（3）HNP 57 cone fan

1.The fan can run for a long time under a negative pressure of 100 Pa, and has a strong pressure resistance;

2.The permanent magnet motor and control part are integrated, which is efficient and

3.Speed regulation: Through the 0-10 V signal, the stepless speed regulation of motor can be achieved, with a range of 215 rpm-750 rpm;

4.The motor is designed with wide voltage, which can adapt to the voltage range of 340 V-460 V and run for a long time;

5.It is fully plastic, which is corrosion-resistant, rust-free, weather-resistant and anti-aging;

6.The direct drive transmission has a high efficiency, and daily maintenance such as belt tensioning maintenance is not required;

7.The opening and closing of butterfly sheet is driven by an electric valve, showing a good sealing effect.