●suitable for ventilation of high-negative pressure birds coops with a negative pressure range of 0-100pa；
●the automatic tensioning device used can improve the transmission efficiency and reduce the maintenance frequency;
●the support structure is added to the back-end protective net, which enhances the strength of the protective net;
● the narrowed air duct is optional, which is suitable for a poultry house with compact gable wall space.
the 50 butterfly cone fan is used to ventilate and cool the livestock house. the closed structure of two front doors (butterfly blades) is adopted for the fan, which can be opened under the action of wind and closed under that of spring. a motor is installed in the upper left corner to improve the water resistance. the cone sheet is of the plug-in connection structure, which is convenient to assemble. the automatic tensioning device assembled can improve the transmission efficiency and prolong the service life of belt. the fan is usually fixed at the wall opening, and operates safely and reliably, which can strongly promote the air flow and ventilate and cool the space.
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the 50 cone fan is used to ventilate and cool the livestock house. the rear shutter structure is adopted for the fan, which can be opened under the action of wind and closed under that of gravity. the detachable shutter assembly is used, which is convenient to maintain. a motor is installed in the upper left corner to improve the water resistance. the mobile motor can tension the belt and prolong the service life of it. the fan is usually fixed at the wall opening, which can ventilate and cool the space.
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box fan is used to ventilate and cool the animal husbandry farms. when the fan is started, the opening mechanism drives the shutters to open in linkage. when the power is cut off, the shutters will be closed under the action of tension springs. the operation of the fan promotes the air to flow and to ventilate and cool the space.
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the 57 cone fan is used to ventilate and cool the livestock house. the closed structure of two front doors (butterfly blades) is adopted for the fan, which can be opened and closed under the action of electric valve. the direct drive transmission structure has a high efficiency. the cone sheet is of the buckle connection structure, which is convenient to assemble. the fan is usually fixed at the wall opening, and operates safely and reliably, which can strongly promote the air flow and ventilate and cool the space.
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