Dust collector

The utility model relates to a dust collector having high efficiency and convenient repair. A dust collector comprises a dust collector cylinder body part and a vacuum container part arranged on the bottom end of the dust collector cylinder body part, wherein, the cylinder body part is provided with sleeve pipes, and the sleeve pipes are sheathed with a filter screen from the exterior of a supporting body; the top end of each sleeve pipe is connected in series with a guide pipe which is guided and connected by a venturi for guiding positive and negative gas streams; the supporting body of a sleeve is a spring body; the upper end of the spring body is connected in series with a venturi and forms the pipe-shaped bearing state, the lower end of the spring body extends to forms a spring hook, and the spring body is elastically embedded and hooked a plate hole arranged on a fixed plate positioned in the cylinder body part by the spring hook. The utility model is used for dust collection.