The hammer crusher is one of the members among the ore beneficiation equipments. As a result, we should have a deep understanding about the hammer crusher. With the wide use of the hammer crusher, the hammerhead and the grate bars are gradually worn. The gap between the grate bars and the gap between the grate bars and the hammerhead become larger and larger. The impact force and the grinding force for the materials in the crusher reduce. The particle size of the materials discharged through the grate bars is relatively coarse. The amount of the materials which return the hammer crusher after they are screened by the vibrating screen becomes large. The crushing efficiency reduces and the service life of the hammerhead also reduces. As a result, tight grate bars operation is needed to drive the rotation of the eccentric wheel through the lower adjustment screw of the crusher to fasten the grate bars so that the gap between the hammerhead and the grate bar can reach the technological requirements and improve the crushing ratio.
The specific operating methods are the followings.
First, test the particle size of the materials after they are crushed. When the proportion of the particles whose diameter is less than 3mm is less than 50%, tight grate bar operation is needed immediately. The crushing operator with rich experience can judge the particle size of the materials through eyes.
Second, record the time to tight the grate bar.
Third, open the checking hole of the crusher to check the amount of the attrition of the hammerhead. Move the hammerhead with steel wire. If the hammerhead is easily to be moved, you should tight the grate bars. The above three ways can be used to help us accurately judge if the tight grate bar operation is needed.
Henan Hongxing Mining Machinery transforms the checking hole to the hinge door, which can reduce the checking time and reduce the labor density of the maintenance men. The improvement for the operation can reduce the fault rate of the equipment and improve the crushing efficiency.
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