Vertical mill vibration rule out

Vertical mill vibration rule out 2019 - 10 - 22 Wang Zhanguang ( Jiaozuo strong cement) Vertical mill vibration have been discussing the cause and the characteristics, the following talk about vertical mill vibration elimination method, for your reference. 1. In case of transmission of vibration to eliminate vibration value is given priority to with axial, reason may come from the coupling vibration, the response to the coupling of the precision of the inspection, and the new alignment of coupling to the specifications or manual requirements. If discover motor axial vibration is larger, in addition to check the coupling, also want to consider the problem of the motor itself, to check whether the magnetic center of motor and rotor centre, inspection method for release coupling, start the motor, to measure the location of the motor end face, location and alignment, leave enough with the gap. If the above are no problem, axial vibration may come from into the shaft gear meshing, perhaps gear positioning problems, this can be according to the vibration, noise and so on carries on the comprehensive judgment, decision process, deal with gear mesh precision adjustment if necessary. If discover vertical direction vibration value is bigger, vibration source may come from loose, deal with anchor and related fasteners to inspect tighten, tighten, pay attention to check whether in the coupling of affected by the fastening. Spiral bevel gear is not normal mesh can also result in vertical vibration, such as top gear for other reasons, it also according to the noise and frequency specific judgment, once established, must be repaired, otherwise it will cause the spillover. Levels of vibration from gear circumferential meshing force or other aspects of the horizontal force, when the judge should combine the noise, vibration direction, vibration frequency, vibration sources, such as spindle speed and processing. 2. The vibration of the instability of raw material layer and material layer instability may come from the keep-off circles highly discomfort, ring high wind speed, wind classifier speed is higher, raw material is bad, too dry raw materials, etc. , do not match, the indexes and the output should be appropriate to improve operations, reduce ring wind speed and wind classifier speed, reduce the fine powder into a millstone, when it is necessary to reduce production regardless of cost. If belong to the keep-off ring height, should adjust the height, about 5% of the roll diameter. If the material is too dry can spray appropriately. And so on. 3. Too much raw material granularity adjustment crusher discharging granularity, processing crusher perforated strainer, prevent cold piece into larger mill, if difficult to adjust, can be appropriately increase the bed height, reduce vibration. 4. Mill and roller in case of the impellers of falling mill grinding roller, it shall timely repair welding, it is difficult to repair welding, also can appropriate to increase the material thickness, reduce vibration. 5. Roller pressure lower roller pressure is low, not easy broken materials, produce disruptive vibration, is like a roll on the uneven road, if timely increase roller pressure, material crushing, the material bed, formed the roll inhibitory effect of vibration increase, natural vibration. The vibration of the roller mill are also likely to come from other devices such as external influence, so check carefully analysis, ruled out one by one. Reminds the reader at the same time, due to limited experience level of the author, in this paper, we have not decided, still hope comment.