The utility model discloses a kind of cleaning devices of automatic compensation, including main part, cleaning part and compensation part, the compensation part is located in the accommodating groove, and it is used to drive the cleaning part and
resist on the conveying work surface, automatic compensation operation is carried out during cleaning operation, without manual intervention, greatly improve work efficiency, reduce labor cost, while reducing the error and risk that human operation can bring, by the deformation
restoring force of compensation part, uneven situation on conveying work surface can be automatically adapted, ensure that cleaning part is always closely attached to conveying work surface, effectively cope with the conveying
work demand under different material, different working condition, improve the versatility and stability of equipment, effectively remove residual material, avoid sample mixing, guarantee the purity and representativeness of sample, to improve the accuracy of detection result, facilitate installation and maintenance, improve the reliability and durability of equipment.