Crusher is widely used, mainly used in mechanism aggregate industry, although crusher can crush all hard rock, but itself has some worn, there are many reasons for worn, Mainly material hardness, abrasive resistance, particle size, moisture, the amount of material to be crushed, the feeding method and operating conditions.
During crusher started running, the largest number of crushed material into the crusher the parallel entrance , and thereafter declined sharply, so parallel area subject to strong abrasion and crushing machine after running several days, the parallel zone is gradually changing.
With the liner wear and the degree of crushing cavity profile changes，along the crushing cavity height was crushed material distribution more uniform. Within the scope of the liner wear limit is the change of the crushing cavity dimensions, especially late parallel area no longer exists, the cavity shape completely out of the original contour. At this time the feeding mouth size decrease about 1.4 to 1.4 times, the feeding mouth most amount of material handling. Because parallel zone does not exist the product quality will bad, crusher production also fell. The wear of liner is not uniform, that will lead to the crusher liner life and the technical and economic indicators declined, thereby protecting the crusher crushing chamber is very important.
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