Common faults and troubleshooting of pulverizing equipment (continued 1)

3 Vertical Pulverizer 3.1 working principle block diagram of Vertical Pulverizer see Figure 1 for working principle block diagram of vertical pulverizer Figure 1 shows that the failure of every part of the whole system will affect the normal operation of the system Users of every small detail should attach great importance to it and eliminate it in time to ensure the stable and reliable operation of the system According to the working principle of the pulverizer, what are the consequences of failure of a certain part of the system in normal operation? The first three variables are constant, i.e output, feeding speed and induced air volume are kept constant: (1) dust cabinet air leakage → working air volume A kind of → cyclone separation efficiency A kind of Yield A kind of → due to constant feeding speed → material in main grinding chamber A kind of → main mill temperature A kind of → main mill motor current A kind of → motor current of secondary mill A kind of → if it works for a long time or the room temperature is high in summer, the secondary grinding machine will stop or solidify (2) Too much dust in the dust bag, poor permeability → working air volume A kind of → cyclone separation efficiency A kind of Yield A kind of → due to constant feeding speed → material in main grinding chamber A kind of → main mill motor current A kind of → main mill temperature A kind of → long time operation will result in the shutdown of the secondary grinding machine or the solidification in the main grinding chamber (3) Air leakage at the top cover plate of cyclone separator → working air volume A kind of → cyclone separation efficiency A kind of Ultrafine powder A kind of Yield A kind of → main mill motor current A kind of → main mill temperature It is (4) Discharge air leakage → working air volume A kind of → cyclone separation efficiency A kind of Ultrafine powder A kind of Yield A kind of 3.2 important notes: the main mill shall be operated in the direction of signboard ·It is forbidden to clean the main and auxiliary mills with water ·The dedusting bag shall be cleaned with water regularly to keep its permeability · the first task before each shift is to open the drain valve of oil-water separator and air compressor, discharge the oil-water, close it, and then start work Generally 2-4 times per shift in summer and 1-2 times per shift in winter 3.3 cleaning method (1) self cleaning method: start the induced draft fan, remove the cyclone screen, and use the pure high-pressure air source to clean the parts to be cleaned (2) Select high-power Hotel vacuum cleaner to clean the pipeline and other parts 3.4 configuration requirements of pulse air source (1) it is better to select oil-free or semi oil-free air compressor, and oil lubricated compressor is also available When the air displacement is 0.6 ~ 0.9m3/min, the working pressure is 7cm2 / kg (2) The oil-water separator must be equipped The gas source can only be put into the dust collector pulse after oil-water separation The specification is: 1 ~ 2m3 / min (3) In summer production, the oil-water drain valve at the bottom of the air compressor air cylinder needs to be opened once per shift to remove the water and oil accumulated in the air cylinder.