Vibrating screen is mainly used for sand and gravel quarry screening material, but also for coal preparation, mineral processing, building materials, electricity and chemical industries for product classification purposes. Fault and treatment Vibrating screen more and more valued user, Liming Heavy Industry Science and Technology on the common Vibrating screen failure analysis as follows:
1. Vibrating screen not start or amplitude is too small, you should check Accessible, electrical motors for damage, or if insufficient voltage, these are not the problem, and then check from the mechanical, material vibration sieve surface is stacked too and more, if it is cleared. Coupling bolt on the exciter without loss, whether grease caking thickens, then you can clean overhaul shaker, and then adjust the position of the eccentric shaft aggravated block or vice eccentric.
2. Vibrating screen screen surface material flow abnormalities, one less screen box stiffness, there is a critical frequency, bolts become loose, this problem occurs on the fastener. Second transverse horizontal screen box did not identify, from the support leg spring bearing seat or the spring itself to find fault, for spring or change seat size, there may be damage caused by the screen surface network, as long as the replacement of the screen can be. If it has been due to lack of screen box stiffness did not identify the horizontal level, will cause beam fracture, such as still running but also make material flow abnormalities. There may be improper operation, namely the feed is one of the reasons is extremely uneven.
3. Vibration sieve poor quality, because the improper operation responsibility, probably mesh plug into the sieve material increase in fines and moisture increase, the upper sieve material layer is too thick, feeding inequality and so on. You may pull Debu tight on both sides of the screen, if it is eccentric shaft may drag the inability belt, the belt is too loose, and other mechanical problems dealt with, you can reverse spin for some time, in order to improve screening quality.
4. Slow rotation Vibrating screen, bearing fever, this situation shows the usual maintenance did not keep up, bearing the lack of grease, add oil if it is new, it is the quality of oil or add too full, low-grade oil to make it bearing blocked labyrinth seal jams, so very important quality grease.
5. If the circular vibrating screen noise is too large , may be bearing damage, loose bolts, beams and spring fracture damage, in addition to tightening the bolt, the other three conditions required replacement parts.
6. Vibrating screen side crack damage, beams fracture, structural, such a situation will not arise suddenly, working hours too critical frequencies, such as a large number of high-strength bolts fastening side relaxation, spring severely deformed left and right height difference very much, there may be eccentric weight of each block error is too large, causing the structure is damaged, wall cracks, and even beams broken, other than to replace the damaged parts, tighten the bolts must repair wall cracks when two heads hit two 6m / m holes, to prevent the crack extends, do not forget to fill when the reinforcing plate, strengthen the board to play a few vents.
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