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The impact crusher rotor is the main component that connects the impact crusher plate hammer and drives the plate hammer to crush the materials, at the same time, it also plays a certain balancing role in the crushing operation of impact crusher. In order to satisfy the need of crushing the lump ore, the impact crusher rotor must be manufactured with sufficient weight and smooth operation ability. However, in the case of equipment parts replacement and equipment wear, the phenomenon of impact crusher rotor unbalance often happens. The following is the summary of the causes, consequences and solutions of the rotor imbalance of impact crusher.
1. The rotor surface is seriously worn and the wear degree is not uniform, then the rotor centroid and the rotor center of impact crusher are not in the same position, resulting in the static balance and dynamic balance of the impact crusher rotor cannot be guaranteed.
2. Uneven material feeding causes the non-uniform stress on impact crusher rotor, so as to the rotor balance is destroyed.
3. The quality of the impact crusher rotor itself is questionable and unqualified, because the manufacturer does not produce it according to the strict manufacturing requirements.
The consequences of an unbalanced rotor
1. When the impact crusher rotor is running in an unbalanced state, it will produce a large inertia force and moment, which can cause the unstable operation of the impact crusher equipment.
2. Impact crusher rotor imbalance can cause the large vibration of rotor, generate the additional dynamic load, destroy the normal working conditions of impact crushing machine, even make some accessories of impact crusher crack and breakdown, such as the bearing temperature will rise too high to shorten its service life.
1. Do the balance test of rotor before the impact crusher is put on production, during the test, the impact crusher rotor shall not return the 1/10 length of its circumference when it stops at any location.
2. The material feeding speed should be even so as to avoid the uneven force on impact crusher rotor;
3. When replacing the plate hammer of impact crusher, all plate hammers must be replaced simultaneously and installed in the correct way.
Therefore, no matter to put on the new plate hammer or to assemble the repaired old plate hammer of impact crusher, we always need to notice whether the impact crusher rotor is in balance, at the same time, do the daily maintenance work of the rotor well, which can also avoid the happening of impact crusher rotor imbalance.
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