Cyclone dust collectors

The invention relates to cyclone dust collectors. Each collector comprises a conical cover, a strut, cyclone vanes and a flange barrel, wherein the cyclone vanes are arranged on the flange barrel; the strut is connected with the flange barrel by a connecting frame; the conical cover covers the cyclone vanes and the strut; the top of the strut is fixed together with the conical cover by a connecting assembly; a dust outlet is arranged on the conical cover; and the cyclone vanes are arranged on the lower part of the conical cover. The collectors have the following beneficial effects: the collectors dispense with cleaning and maintenance and realize the air inlet requirement; different quantities of cyclone dust collectors are adopted according to the air inlet area; and the cyclone dust collectors have strong universality and are convenient for production, reserve, expansion and serial application.