Sheet cotton conveying pipeline impurity removing device

The impurity removing device for the sheet cotton conveying pipeline comprises a square housing, an impurity collecting box with the same length and width as the square housing is integrally arrangedat the bottom of the square housing, and a plurality of dust bars are arranged between the impurity collecting box and the square housing. An inserting plate is movably arranged at the bottom of the impurity collecting box; the inlet end and the outlet end of the square housing are equal in length, the width of the inlet end of the square housing is larger than that of the outlet end of the squarehousing, and the square housing is horizontally arranged at the top of the impurity collecting box; a conical feeding port matched with the square housing is formed in the inlet end of the square housing, and a conical discharging port matched with the square housing is formed in the outlet end of the square housing. The device is simple in structure and high in practicability, the cotton productquality of textile enterpr