The present invention relates to a cotton opening and dust collecting device for refined cotton, which comprises a first cyclone separator, a second cyclone separator, a first draught fan, a second draught fan and a spiral conveyer, and further comprises a suction pipe, a dust collecting cabin, a screen plate, a motor, a dust extraction pipe, a first bearing, a second bearing, a first pipeline, a second pipeline, a third pipeline and a forth pipeline. The device is able to complete collection to the cotton dust in the air in the cotton opening workshop, which not only can effectively prevent the screen plate from being blocked by the cotton dust, but also has good dust collection effect and complete collection of cotton dust.

The present invention relates to a cotton opening and dust collecting device for refined cotton, which comprises a first cyclone separator, a second cyclone separator, a first draught fan, a second draught fan and a spiral conveyer, and further comprises a suction pipe, a dust collecting cabin, a screen plate, a motor, a dust extraction pipe, a first bearing, a second bearing, a first pipeline, a second pipeline, a third pipeline and a forth pipeline. The device is able to complete collection to the cotton dust in the air in the cotton opening workshop, which not only can effectively prevent the screen plate from being blocked by the cotton dust, but also has good dust collection effect and complete collection of cotton dust.