Vertical Ultrafine Mill Buffer Storehouse
The upper buffer store of vertical Ultrafine Mill has an effective capacity of 25t. The purpose of setting up the buffer is to buffer when the abnormal condition of feeding occurs. The material is directly fed into the buffer storage bin through the bucket elevator, and then enters the Ultrafine Mill. The material that is grinded by the vertical Ultrafine Mill is fed into the vertical Ultrafine Mill and powder separator through the bucket elevator, and the coarse powder is added into the buffer bin again, and the fine powder is fed into the tube Ultrafine Mill for further grinding. Because the coarse powder locking air valve at the bottom part of the vertical Ultrafine Mill is a double swash plate locking air valve. Its opening and closing is decided by the quality of the material on the valve plate, so it is interrupted or random, resulting in the fluctuation of coarse powder feeding the grinding disc.
After field observation and repeated research, a simple and stable material lock air valve was installed on the next feeding pipe under the coarse powder locking air valve of the classifier, and the original double turn plate locking air valve remained unchanged. Rubber belt conveyor belt made by rubber plate, one side of the flange fixed, deep chute internal length can be adjusted according to the actual situation, both sides of the chute inner part of the rubber plate bolted to a protective plate made of two pieces of wear-resistant steel plate, a side plate and a feeding chute has a certain gap, keep the rubber belt board can freely swing. The original coarse powder separator is double lock air valve flap lock air valve, a certain amount of leakage, and simple steady new material lock air valve, when the material accumulation to a certain amount, the rubber belt plate away, the opening, the outflow of materials, when the material is less due to a certain amount. The upward leakage airflow, rubber belt plate back to the original position because of the effect of the baffle plate, can lock the leakage. During the actual production, the above process will be balanced in a relatively fixed position, and the material continues to flow down. The rubber belt plate limits the leakage air in a minimum range, so that the coarse powder flow rate of the vertical Ultrafine Mill is basically stable and the fluctuation is eliminated. After the above two changes, the vibration value of the vertical Ultrafine Mill is greatly reduced, and it is basically stable at the level of 1.2mm/s.