Vertical single-cylinder cloth bag dust collector

The utility model discloses a vertical single-cylinder cloth bag vacuum cleaner, and relates to the technical field of air purification. The dust collector comprises a dust collector shell, a supporting pipe, a threaded pipe and a telescopic frame, a dust collection box is inserted into one end of the inner side of the dust collector shell, the supporting pipe is clamped and fixed to the inner side of the dust collector shell, a dust collection frame is clamped to one end of the supporting pipe, and the bottom end of the supporting pipe penetrates through and is clamped to the dust collection pipe; a limiting frame is clamped to the upper side of the threaded pipe in a sliding mode, a dust filtering bag is clamped between the threaded pipe and the limiting frame, a telescopic frame is clamped to the upper end of the outer side of the dust collector shell in a sliding mode, a top cover is rotationally clamped to the upper side of the telescopic frame, and an exhaust fan is clamped and fixed to the bottom end o