How to improve the service life of the sander rotor?

How to improve the service life of the sander rotor?

The length of the rotor of the sander directly affects the production efficiency of the equipment. Once the rotor is damaged, the replacement will not only delay the production time, but also cost a lot of money. This is a situation that every manufacturer and user is not willing to see. So how do you increase the service life of the rotor of the sand washing machine? The following SBM Heavy Industry will explain to you:

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  • First, the model of the rotor bearing
  • The new sand making machine works under harsh conditions for a long time, which will aggravate the wear of the rotor bearing. However, the rotor bearing is not only expensive, but also difficult to replace, which is liable to cause a loss of production. Therefore, the first choice is to correctly select the model of the rotor bearing. Double row radial spherical roller bearings have the advantages of strong bearing capacity and good self-aligning performance. Therefore, the new sand making machine mostly uses this kind of bearing as the rotor bearing.

  • Second, the bearing condition of the rotor bearing
  • The impact load of the new sand making machine on the bearing depends mainly on the impulse acting on the rotor and the support flexibility of the bearing housing. Increasing the support flexibility of the bearing housing reduces the impact load on the bearing. Therefore, a rubber plate of appropriate thickness can be added between the bearing housing and the support frame to improve the support flexibility of the bearing housing.

  • Third, the balance accuracy of the rotor
  • The rotor of the new sand making machine has high mass and high speed. The casting deviation of the rotor body and the quality deviation caused by the hammer after the installation of the plate will cause unbalanced centrifugal force when the rotor rotates, which will cause the machine to generate forced vibration, resulting in bearings and other parts. Destruction, so the rotor of the crusher must be tested for balance.

    If the diameter of the rotor body is small, the mass of the blocking plate on both sides of the rotor body can be changed to balance; if the diameter of the rotor body is large, the weight can be welded to the outer wall of the rotor. In order to prevent the counterweight from falling during the vibration process, several rows of grooves can be cast in place, the weights are embedded therein, and then welded, which is both firm and beautiful.

  • Fourth, the relationship between the rotor bearings
  • The impact of the broken rotor bearing is mainly the impact load, the magnitude of the load on the rolling element is different, the rolling element under the combined action of the impact load is large, and the inner and outer ring raceways are also here. The force is large when it comes into contact with the rolling elements.

    Since the inner ring keeps turning when it is working, the contact points on the track will be circulated from the force to the force, so it is necessary to make the inner ring fit tightly, so that no point will stay in the point. Forced Zui big point on the phenomenon. The outer ring is relatively fixed, and the large force will stay at a fixed point. Therefore, if the outer ring is loosely fitted, it may have a small amplitude movement under the impact force, thereby increasing the maximum force point and extending the outer force. The life of the circle.

The above four points are the main points of extending the life of the rotor of the sand making machine. In fact, it is not limited to these kinds. Many small details will directly or indirectly affect the life of the rotor of the sand making machine. The sand making manufacturer must use it when using it. pay attention.