Cyclone filters are used for dust-loaded air clearing as well as for dust discharge in pneumatic conveyor systems. 

Several modifications have been developed. They are with the same working but the number of bags is different, i.e. they differ in surface and structure. 

Fig. 1 Scheme of a bag cyclone filter - CFR and CFRU types 


Fig. 2 Filtration of dust-loaded air through the bag

Fig. 3 Bag blowout