Multi-layer cotton carding and impurity removing equipment

The invention relates to textile machinery, in particular to multi-layer cotton carding and impurity removing equipment. The multi-layer cotton carding and impurity removing equipment can conduct impurity removing pretreatment in advance. A multi-layer cotton carding and impurity removing device comprises a carding machine body, a conveying belt, a winding drum, a supporting base, a first belt wheel, an impurity pre-removing treatment assembly and the like. One side of the carding machine body is fixedly connected with a conveying belt used for feeding cotton, the carding machine body is rotationally connected with a winding drum in the cotton outlet direction, the winding drum and the conveying belt are in synchronous transmission through a first belt wheel set, a supporting seat is arranged below the conveying belt, and a pre-impurity-removing treatment assembly used for conducting pre-impurity-removing treatment after cotton feeding is conducted is arranged on the supporting seat. The pre-impurity-removing