The utility model discloses an automatic sampling
system which comprises a conveying belt, a driving device, a sampler, a blanking
pipe and a
coal sample collecting
pool, the conveying belt is horizontal, and the feeding end of the conveying belt is located at the downstream of a discharging opening of the
coal storage and transportation
system; the sampling device is vertically arranged above the conveying belt, the upper end of the sampling device is connected with the output end of the driving device, and the lower end of the sampling device performs
circular motion along with the output end of the driving device so as to perform full-section sampling on the
coal on the conveying belt; a discharging
pipe is arranged beside the conveying belt, the upper end of the discharging
pipe is open and located on the motion trail of the sampler, and the lower end of the discharging pipe is communicated with a coal sample collecting
pool. The device has the advantages that convenience and uniformity of sampling are guaranteed, errors caused by manual sampling are avoided, meanwhile, the operation labor amount is reduced, risks in the sampling process are avoided, and personnel can know
mass changes of coal conveniently.