In the long-term operation of the ball mill, some troubles will inevitably occur. If there is a problem, solve the problem. Today, we will analyze the factors causing the leakage of the intermittent ball mill and how to solve it.
In the long-term operation of the ball mill, some troubles will inevitably occur. If there is a problem, solve the problem. Today, we will analyze the factors causing the leakage of the intermittent ball mill and how to solve it:
1. The conveying capacity of the spiral groove in the hollow shaft of the intermittent ball mill can not meet the requirements. In addition, the feeding spiral blade causes the blade to wear due to the long-term transportation of the block material or the design height of the spiral blade is not enough, so that the material level is higher. The height of the blade, especially when the feed speed exceeds its conveying speed, the grinding speed of a part of the material higher than the spiral blade is reduced, and cannot be input into the grinding machine in time, and the powder will leak out. Solution: Improve the pouring angle of the feeding round opening, install a feeding nozzle that is concentric with the inner rotating screw receiving port, so that the material brought up in the rotation falls on the inclined angle and slides into the spiral barrel.
2. The outer diameter of the inlet ball mill bucket is rough and not round. The industrial felt is fixed on it after being immersed in oil and rotates with the hollow shaft, so the felt is easy to wear. After the felt and the feeding hopper rub each other for a period of time, there will be a gap. There is a space in the inverted cone of the feeding hopper (the receiving pipe), and the material is not easily transported here, which will cause retention and returning, which provides a prerequisite for the leakage of ash. . After the felt is worn, it is not easy to replace the felt, and frequent replacement is more impossible, so the gap is getting bigger and bigger, and the ash is getting more and more serious. Solution: Reduce the diameter of the ball mill tube into the portion of the spiral barrel, which reduces friction and the flow is not easily spilled during the feed.
3. The circulating load rate of the intermittent ball mill is too high, and the feeding rate is more than the feeding height of the screw barrel. The returning material cannot enter the ball mill in time, and the dead corner of the pile is formed at the gap of the grinding head, and the closed gap is enlarged. The outward pressure caused by the operation of the beginning of the screw increases the sealing gap by the double extrusion of the accumulated material and the outward pressure, which causes the grinding head to leak. Solution: Adjust the flap valve on the return pipe of the classifier to make the ash return to the screw barrel as evenly as possible, and at the same time, partially improve the structure of the screw barrel.
4. The intermittent ball mill positive pressure operation or micro-negative pressure operation will cause the material of the mill to overflow. Solution: Fully weld a rotating bell mouth at the feeding end of the grinding head, so that the material can be directly rotated and slideed into the spiral inner tube for smooth forward movement. Zhengzhou Hengxing Heavy Equipment Co., Ltd. is engaged in large and medium-sized mining machinery. The main products are: ball mill manufacturers of dryers, crushers, ball mills, intermittent ball mills, energy-saving ball mills, cement ball mills and other mining equipment. The ball mill is reasonably priced and has many varieties. Welcome to consult.
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