Classification of greenhouse fan
The fan of greenhouse can be divided into hammer style and push - pull style.
Hammer type opening and closing mechanism: the switch mechanism is realized by two unpowered hundred-turn heavy hammers equipped with automatic devices, so that the louvers can be windproof, dustproof and rainproof.
Push-pull type is to add a set of plastic linkage device on the fan, as long as the fan turns the shutter will open. The thickness of the fan added to this set of devices is 450mm, while the thickness of the hammer type fan is 400mm.
Compared with the hammer style fan, the push and pull type fan has large air volume, low noise, and the quality of galvanized sheet and pulley and motor is good. This push and pull type is made with reference to export standards.
