Crusher is a commonly used pharmaceutical machinery. During the operation of the fan on the crusher, due to its high speed, harsh working environment, and loose sealing, the sand and soil can cause serious wear to the fan, resulting in the detachment of the impeller body and wheel hub rivet heads, as well as fatigue cracks at the rivet holes. How to repair the fan has become a tricky problem. A slight improper repair method not only fails to achieve the purpose of repair, but may also render the fan useless. Fans are all subjected to dynamic balance tests, and due to their high rotational speed, there are high requirements for their balance, especially for the impeller of the fan, which is very sensitive to the imbalance around the periphery, but not very demanding for the small imbalance sensation in the center. Based on this characteristic, the following methods can be used to repair the faults that are prone to occur in the impeller: Here is a simple and practical maintenance method for the crusher fan:

1. If the rivet head of the impeller is worn, the worn rivet head can be restored to its original normal state by welding and welding the impeller body and hub together.

2. For situations where fatigue cracks are prone to occur at rivet holes, a new welding rod that has not been used can be used to weld and repair the cracks, but it should be symmetrically carried out around the axis of the impeller. Leave the remaining welding rod at the crack repair location, and then use a new welding rod to repair the relatively symmetrical rivet hole crack. After welding, the remaining welding rod is the same length as the one left during the symmetrical rivet repair to ensure that the weight of the welded repair is equal. If there are no cracks at the symmetrical rivet hole, the welding rod should also be welded here to offset the newly added welding weight at the symmetrical rivet hole crack. Welding using this symmetrical weight repair method can repair cracks.

3. The method for conducting a simple dynamic balancing test on the impeller is also very simple. After supporting the impeller, gently rotate it by hand. If it cannot reach balance, it will stop at a low point and swing left and right. If there is a bias, spot welding can be done on the opposite impeller to increase its weight and balance it, or the welding marks on the bias impeller can be ground off with an angle grinder to achieve balance. This way, the fan can be repaired and work normally. Buy Volvo engine parts and find Quanzhou Easy Power

4. Note that during the repair process of the fan, welding and spot welding should not be used randomly. Leave welding marks on the impeller to avoid affecting the balance of the fan impeller, failing to achieve the purpose of repair, and causing greater losses.