Online quantitative sampling device for tobacco lamina

The utility model discloses an on-line quantitative sampling device for tobacco lamina. The device comprises a main conveying belt, a flow dividing conveying belt, a negative pressure air pipe, a negative pressure fan, a detection conveying belt, an auxiliary trough, a blanking pipeline and a flow collecting conveying belt. According to the utility model, the negative pressure cavity is mainly used for carrying out negative pressure on-line sampling on each tobacco lamina conveyed on the shunting conveying belt, the machine vision system is used for detecting the shape, the area, the size, the foreign matter impurity, the leaf stem ratio and other parameters of the tobacco lamina, and the sampled tobacco lamina is conveyed and converged back to the tobacco lamina main conveying belt through the conveying belt after the detection is completed; therefore, the purposes of negative-pressure quantitative sampling and online detection of the tobacco lamina are achieved. According to the utility model, the online qu