The cleaner is one of the main parts of the belt conveyor. In order to prevent dust in the process of material conveying and the requirements of the production process, most of the materials conveying need to maintain a certain water content. For example, the water content of the coal conveying belt in many power plants is about 12%, which is bound to cause the water-bearing materials to adhere to the belt. If not cleaned, the belt will be continuously spilled after the belt operation and the return idler collision.