Device for removing impurities on inner wall of petroleum pipeline

The invention discloses a device for removing impurities on the inner wall of a petroleum pipeline. The device comprises a pedestal. One end of the pedestal is provided with a support for installing the petroleum pipeline, and the other end of the pedestal is provided with a cleaning mechanism moving in the length direction of the petroleum pipeline. The cleaning mechanism comprises a sliding base. The sliding base freely slides on the pedestal. The sliding base is provided with a shaft rod extending into the petroleum pipeline. One end of the shaft rod is in pivot connection with the slidingbase through a bearing pedestal, and the other end of the shaft rod is provided with an abrasive tool for cleaning the petroleum pipeline. The outer circle of the abrasive tool is provided with a plurality of abrasive discs, the multiple abrasive discs are attached to the inner wall of the petroleum pipeline. One end of the shaft rod is further provided with a drive mechanism for driving the shaftrod to do rotational moti