Renovation Of Bulk Material Belt Conveyor Iron Removing System And Development Of Remote Monitoring System

In Coal mining and transportation process,due to a variety of reasons,the detonator pieces and various kinds of ferromagnetic impurities are mixed in commercial coal,it is a serious influence for commercial coal transport,grinding and using,and even cause equipment damage or personal injury,thus effectively Iron removing is especially important for coal.Iron removal device currently widely used in Qin Gang are mounted high power electromagnetic iron remover,iron remover always stay electric excitation during coal conveyer belts running,but coal ferromagnetism impurity is not always exist,the characteristics is random and discontinuity.The original iron remover control mode would not only waste a lot of power,but also seriously affect the service life of the iron remover equipment.For the above problem,this paper modified the whole control system,and designed a remote monitoring system according to operating mode of the existing iron remover and the actual demand in qinhuangdao port company,Ltd.Firstly,based on the structure principle of original bulk iron removing system,the whole system retrofit scheme is put forward.and designed the distribution system,PLC control system scheme;According to the actual conditions and environmental requirements of the metal detection systems,determined the metal detection system installation plan.when installation,considered the electromagnetic interference,vibration amplitude and the influence of interference signals.through the experiment to detect the required precision of the ferromagnetic impurities,and classified the ferromagnetic impurities size.Analyzed the technical carried on the original electromagnetic iron remover,equipped with power protection components.Secondly,developed metal detector digital equipment,including the metal detector analog signal processing design and Signal digital design,develops the corresponding software.iron remover not only remove ferromagnetic material but also greatly reduce the energy consumption,ensure the safety of production,and prolong the service life of equipment.Finally,Developed remote monitoring system,realized the networked of control system.analyzed the field application data,transformation system reach the expected aim.