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Common troubleshooting methods for mine vibrating screens

by:YiFan     2021-04-25
2012-06-12 08:19:09 Common troubleshooting methods for mining vibrating screens. The article is published by a manufacturer specializing in the production of vibrating screens and screw conveyors. Mining vibrating screens are classified screening equipment after materials are crushed and ground. Poor screening quality sometimes occurs because of improper handling and many responsibilities. It may also be caused by clogging of the mesh, increased fine particles in the feed material and increased moisture, resulting in excessively thick sieving layer and uneven feeding on the machine. The responsibility of the screen may be that the two sides of the screen are not stretched tightly. If the shaft is eccentrically vibrating, the mechanical problems such as the inability of the belt during the dragging of the belt may be too loose, etc., and the reverse rotation for a period of time can be used to improve the screening quality. If you cannot start or the amplitude is too small, you should first consider the electrical barriers, the damage of the motor or the components in the circuit, or the local voltage is insufficient at the time. If there is no problem in these three aspects, then you have to check mechanically. , Whether the material on the screen is too much accumulated, if so, it should be removed immediately. Due to the accumulation of too much material, it will directly affect the amplitude of the vibrating screen. Whether the coupling bolts on the vibration exciter have fallen off, whether the grease has thickened and agglomerated, the vibration exciter can be cleaned and repaired at this time, and then the position of the eccentric shaft weighting block or the auxiliary eccentric block can be adjusted appropriately. The material activity on the screen surface is abnormal. This problem may be the insufficient rigidity of the screen box. The existence of a critical frequency indicates that the connecting bolts have been vibrated, and even to the extent of full vibration, they need to be tightened immediately. The second is that the horizontal level of the screen box is not accurate. Look for the fault from the spring of the support foot. Replace the spring or the cushion or change the size of the support. It may also be caused by the damage of the screen surface. Just replace the screen. If the rigidity of the screen box has been insufficient and the horizontal level is not accurate, the beam will break, and the material will move abnormally if it is still running. It may also be improper manipulation, that is, the extremely unbalanced feed is also one of the reasons. The vibrating screen rotates slowly during normal operation, and the bearing has a fever. This indicates that the usual maintenance has not kept up, and the bearing lacks grease; if the bearing is newly added grease, it may be a problem with the quality of the grease or overfill , Inferior oil makes the bearing block the labyrinth seal jam, so the quality of the grease is quite important. Excessive noise of the vibrating screen during operation may be caused by bearing damage, loose bolts, broken beams, and spring damage. Except that the bolts can be tightened, parts need to be replaced in the other three conditions.
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