Total-moisture nine-point sampling device for coal sample

The utility model belongs to the technical field of coal sample total moisture preparation sampling devices. The utility model relates to a sampling device, in particular to a coal sample total-moisture nine-point sampling device. Including a machine frame, waste box arranged between racks, an overturning piece is arranged between the upper ends of the two racks; connecting blocks are fixedly arranged on the two sides of the overturning piece. The two connecting blocks are respectively connected with the rotary driving device and the auxiliary rotating device; the rotary driving device and theauxiliary rotating device can enable the overturning piece to overturn by 360 degrees at a constant speed, a main body of the overturning piece is a cylinder, a square top cover is arranged at the top of the overturning piece, a columnar groove is formed in the square top cover, nine sampling circular grooves are distributed in the main body of the overturning piece according to a nine-point sampling method by taking the