Single-shaft stirrer

The utility model relates to the field of stirring equipment, in particular to a single-shaft stirring machine which comprises a stirring box, a sampling device and a positioning device are arranged on the stirring box, the sampling device comprises a sampling opening formed in the side wall of the stirring box, a sampling box is installed at the sampling opening, and the shape of the cross section of the sampling box is the same as that of the cross section of the sampling opening; the positioning device comprises a positioning guide rail and a positioning sliding block, the positioning guide rail is fixedly installed on the sampling box and located on the side face, adjacent to the edge of the sampling opening, of the sampling box, the positioning sliding block is fixedly installed on the stirring box and adjacent to the sampling opening in position, and the positioning sliding block is installed on the positioning guide rail in a sliding mode. The sampling device has the advantages that shutdown is not nee