• 04 Nov, 2022
• By EPIC Powder
• 2 Comments

Analysis of the Influence of Various Equipment of Air Flow Crusher on the Quality of Finished Products EPIC Powder Machinery

In the powder processing industry, air flow pulverizer is a kind of equipment with high appearance rate. Most powder materials need to be processed by air flow pulverizer to become more fine superfine powder for subsequent application. So the importance of jet mill in powder processing industry is obvious. For jet mill, the quality of finished powder processed by it is an important factor for testing its qualified performance. Under what conditions will the quality of finished products be affected? Let's take a look

Air source. This is the power of the pulverization process of the fluidized bed jet mill. The request for compressed air can be between 0.7 and 0.8MPa, and the pressure fluctuation should be maintained. Even if it is shaken, the frequency should not be too high, otherwise the product quality will be affected. Secondly, for the gas quality, it is required to be clean and dry. It is required to stop the pollution disposal of the compressed air, remove the moisture, oil mist and dust in the gas, so that the crushed mineral materials will not be purified. In particular, it is required to crush the materials with higher purity. Raw material supply. The feeding machine is used to add raw materials into the raw material bin, and then the raw materials are sent to the crushing chamber of the fluidized bed jet mill through the feeding valve. This machine has strong compliance with the particle size of materials. Generally, we request 325 target raw materials. However, in theory, we have also obtained good results by stopping the processing of mineral materials from 80 mesh to 325 target. The speed of the raw material escort machine takes the initiative to grasp the absolute fluctuation of the concentration of the mixture of raw materials and air in the crushing chamber. We can achieve a good output of ultra-fine powder when crushing by this method. Crushing and grading. There are two pairs of nozzles in the symmetrical device in the crushing chamber. When the compressed air passes through the nozzle, it forms a supersonic airflow to take the raw materials to stop slowing down, collide with each other in space, and crush the raw materials into ultrafine powder. The crushing consequences are related to the shape, spacing, symmetry of the nozzle inner diameter, and the mixed concentration of raw materials and air. The inner diameter shape of the nozzle determines the zui good speed and interval of its sonic composition, and determines the deceleration distance of the raw material. Whether the speed can reach the illusion. The mixed concentration of raw materials and air also affects the product size and output. Grading is stopped by the grading wheel rotating at high speed. The grading wheel looks like a circle“ Iron bucket” The center of the bottom is fixed on the main shaft of the directly connected motor, which is driven by the motor to rotate at a high speed. The teething position and the entrance of the fine powder collection pipeline are absolute, and the gap must not be too large. Otherwise, the unsorted coarse powder enters the fine powder collection pipeline from the gap, affecting the output and quality. In order to avoid such an event, the air seal disposal is stopped at the gap. The edge device of the grading wheel has blades, and the gap between the blades is the channel for separating fine powder. The crushed fine powder floats with the air flow, and the ultrafine powder enters the fine powder collector through the gap between the blades due to its small particle size. Under the centripetal force of the grading wheel, the larger particles will splash to the outer wall and fall down, stopping the re crushing. Adjust the rotating speed of the grading wheel, and products with different particle sizes can be lost. The mixed concentration of raw materials and air in the crushing chamber can be controlled by capacitive material density control switch or sensor. This machine uses the current of the graded wheel drive motor to master, which is complex, feasible and easy to master. When the mixed concentration of materials and air is added, the density of dust that floats with the air flow is added, and the dust that impacts the grading wheel is added, so that the current of the drive motor is added. On the contrary, the current of the drive motor is reduced. The size of the motor current is used to master the amount of raw materials to be escorted, so that the mixed concentration of materials and air can be adjusted to Zui. When the drive current is added, the feeding is stopped immediately, so that the powder discharging and feeding adhere to static equilibrium, Ensure the fluctuation of production and quality. The micro powder collection is composed of cyclone separator and dust collection. The superfine powder enters the cyclone separator through a sealed pipe, and the airflow rotates in the cyclone separator to throw the superfine powder out and down, and then the finished product is discharged out of the package in pieces. Cyclone separators can be of one or two stages. The airflow from the cyclone separator, as well as local dust, enters the dust collector. After passing the dust on the bag, the tail gas is extracted under the action of the induced draft fan. The dust content is very low. To prevent these dust from being discharged into the atmosphere to purify the environment, we also add a set of dust filters to recover the dust, and the tail gas is discharged into the atmosphere after Zui. After repeated tests by the environmental maintenance department, the amount of dust discharged is much lower than the dust emission standard regulated by the national environmental protection department. All consumption processes are controlled and stopped by the master cabinet actively. The master cabinet supplies all consumer motors (excluding air supply power), and can also control parameter adjustment, active start and stop, active maintenance, fault alarm and active shutdown. Ensure safe operation of equipment and fluctuation of production and quality. It can be seen from the above that the product quality of air flow pulverizer will be affected by many factors. Users need to adjust strictly according to the parameters specified by the manufacturer in the use process, and can only produce qualified finished products with full cooperation. For more information about jet mill, please pay attention to EPIC Powder Machinery