Abstract:The “accretion” stuck on the hammer of electrolytic cell is harmful to the normal production of electrolytic cell, and the deep intrusion of hammer into the melt of electrolytic cell is one of the main reasons for the formation of accretion. Once the crust-breaking cylinder and the hammer are installed and put into operation in an electrolytic aluminum plant, the intrusion depth of hammer into electrolytic cell is fixed, but the total height of electrolytic cell melt changes. When the total height of melt is high, the intrusion depth of hammer into melt increases. In view of the above defects, a device with liftable cylinder is designed. Following the principle of screw, the proper striking depth of the hammer can be adjusted by operating the screw, which not only reduces the generation of accretion, but also prolongs the service life of the hammer.