Finishing mill dust hood easy to disassemble and assemble

The utility model relates to a finishing mill dust hood easy to disassemble and assemble, which comprises a hood body covering the top of a finishing mill, the hood body is composed of a lower square section and an upper conical section, upper connecting parts are arranged at the bottom ends of the left side and the right side of the square section, T-shaped connecting grooves are formed in the bottom surfaces of the upper connecting parts, and lower connecting parts are arranged at the top ends of the left side and the right side of the finishing mill. Inverted-T-shaped connecting grooves are formed in the top faces of the lower connecting parts, the upper connecting parts abut against the lower connecting parts on the same sides, the T-shaped connecting grooves and the corresponding inverted-T-shaped connecting grooves form I-shaped inserting grooves, I-shaped limiting blocks are inserted into the I-shaped inserting grooves, and a top plate is fixedly connected to the top end of the conical section through