During the operation, due to the fast, the working environment is poor, the sealing is poor, the fan of Chinese herbal pulverizer is severely damaged. Sand, sand can severely affect the rivet head of the impeller, impeller and hub and the fatigue cracks at the rivet bore.
How to repair the fan has become a tricky problem, the maintenance method is unreasonable, not only does not repair the purpose, but also causing the wind turbine. The fan passes the imbalance test. Due to its fast, it is also very sensitive to its balance, especially the periphery of the impeller, unbalanced, but the requirements for their core micro-balance are not very high. According to this feature, the impeller is prone to failure, which can be repaired by the following method.
If the rivet head of the impeller is worn, welding welding can be performed at the impeller body and the hub, so that the wear of the rivet head is restored to the original normal state. It is easy to generate fatigue cracks in the rivet hole, and a new electrode can be used to not be used for welding repair cracks, but should be carried out in the impeller shaft, and there is still a new electrode repair crack rivet hole in the crack-replenishing electrode.
When the electrode and left, rear soldering is kept the symmetry electrode as long as rivets, in order to ensure the weight of the welding. If the rivet hole does not crack, the solder electrode should be placed here to cancel the new welding weight of the symmetric rivet hole. CNC vertical lathe welding can repair cracks according to this method.
A simple dynamic balance trial is simple. When the impeller is supported, gently turn it with the hand, reach the lowest point, and swallow the balance. If the weight of the impeller is added, the weight of the balance can be increased, or the impeller can be transferred to the grinding machine, so that the balance can be achieved by the fan operation. It should be noted that during the repair process, the wind turbine cannot be used in the welded portion, the left, left, left, and blade wheels, so as not to affect the balance of the wind turbine, to achieve the purpose of repair, resulting in a large loss.
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