The filter is by cyclone cylinder, ash hopper and spiral (or collection cap) composed of three parts, according to the number of cylinder is single cylinder, double tube, three, five and six cylinder cylinder, each combination has two forms: the wind Ⅰ wind and Ⅱ type level (upper wind). For Ⅰ type double tube combination, otherwise the wind and 2006 -- bush-congo-africa-2 -- and in combination of the two kinds of forms, Ⅰ single cylinder and the cylinder only 2006 -- bush-congo-africa-2 -- three forms when the wind, four cylinder and the cylinder combination is only six in the form, for type 2 various combinations can be used on any of the above Ⅰ type into a position, the small resistance, dust removal equipment with high efficiency, air handling, stable performance, cover an area of an area small, simple in structure, practical cheap, etc. Applicable to various mechanical processing, metallurgy, building materials, mining extraction of dust and intermediate purification.