Gaf ventilator

Different, GAF is a mine ventilator produced by Shanghai Blower Factory with German technology, and its blade adjustment method is hydraulic moving blade adjustment, that is, the blade angle can be adjusted without stopping the machine; AGF fan is developed by Shenyang Fan Research Institute of Aviation Industry. Its blade adjustment method is to remove some blades when the air volume is small, and then install the removed blades when the air volume is large.