Automatic material sampling system

The utility model relates to the field of belt sampling equipment, in particular to an automatic material sampling system. The belt sampling device comprises a belt sampling device body, a material flow channel, a stirring device, a division channel, a division sampling device and a central controller, the belt sampling device body comprises a receiving hopper, the material flow channel, the stirring device and the division channel are sequentially arranged below the receiving hopper from top to bottom, and the division sampling device is arranged on the side, provided with a material taking opening, of the division channel; the stirring device comprises a motor, a rotating shaft and a stirring box, the stirring box is installed between the adjusting joint and the gate valve, the rotatingshaft penetrates out of the stirring box and is connected with the motor arranged on the outer side of the stirring box, stirring blades are arranged on the rotating shaft located in the stirring box,and the rotating shaft dr