Working principle

After the large block material is crushed to the required particle size by a jaw (hammer) crusher, it is sent to the storage hopper by a hoist, and then uniformly and continuously fed into the main grinding room for grinding by an electromagnetic vibration feeder. The ground material is sent into the powder selection machine for classification by the fan airflow. Under the action of the powder selection machine impeller, materials that do not meet the fineness requirements fall into the grinding chamber for re grinding. Materials that meet the fineness requirements enter the cyclone powder collector through the pipeline for separation and collection, and are discharged through the discharge device as finished powder. The separated airflow passes through the upper return duct of the cyclone powder collectorEnter the fan. This system belongs to a closed-loop system and operates under positive and negative pressure.Due to the presence of certain moisture in the material being ground in the grinding chamber, the heat generated during grinding can cause the gas inside the grinding chamber to evaporate and expand, changing the system's air flow rate. In addition, the sealing problem of the inlet and the joints of various pipelines causes the entry of external air, resulting in the loss and imbalance of gas in the system. Therefore, the excess gas is introduced into the bag filter through the exhaust pipe valve set at the fan outlet, and purified before being discharged, achieving environmentally friendly production while adjusting the system's air flow balance.