Primary Polyurethane Belt Cleaner One piece molded blade with wear resistance PU material has built-in high strength aluminum alloy framework characterized by good fit, extensibility, impact resistance and no materials leaked. Bolting connection for the blade and the bracket With the spring adjusting design, the whole blade can avoid the damages under high pressure and easily to be installed and adjusted When under any external force, the pressure spring can buffer the impact force in time, protect the belt at the same time