The cone crusher liners is one of the important parts of the cone crusher. A cone crusher liners that can work effectively is the basis for ensuring the normal operation of the machine. So how to choose a suitable cone crusher liners and how to solve the failure of the cone crusher liners is very important.
The importance of the cone crusher liners?
The liner of the cone crusher includes the movable cone liner and the fixed cone liner. Continuing to work with the worn liner cannot effectively exert the crushing function of the machine, which will greatly reduce the economic benefits it brings. Therefore, it is necessary to do a good job in the inspection of the cone crusher liners, and the inspection of the liner is a very important measure.
How to choose the cone crusher liners?
When selecting a cone crusher liners, the following three factors are generally considered: output, power consumption, and wear resistance of the liner. Generally, the purchase is made according to these principles: maximum feed size, particle size change, feed particle size distribution, material hardness, and material wear resistance.
The longer the liner, the higher the power consumption. Select short liners for hard materials, and long liners for soft materials; short liners for fine materials, and long liners for coarse materials. Generally speaking, the material smaller than the discharge port cannot exceed 10%. If it exceeds, the power consumption will increase and the product particle size will become flakes. The increase of the moisture content of the viscous material will affect the throughput of the material. As far as the moisture content of the material is concerned, it generally does not exceed 5%.
Cone crusher liners are made of different materials, and the wear resistance of the liners is also different. Because the liners are often subjected to strong impacts, they are prone to severe wear, which will lead to uneven particle size and reduced productivity. It will bring unnecessary losses, so pay attention to its wear resistance when choosing a lining.
Reasons and solutions for cone crusher liners failure?
Machine into iron block
During the working process, if the iron removal effect of the magnet on the iron is not ideal, the crushing chamber will enter the iron block. When the crushing chamber enters the iron block, the crushing load will increase due to the relatively high hardness of the iron block. When the crushing load exceeds When the rated crushing load of the lining plate is exceeded, the lining plate of the movable cone and the lining plate of the fixed cone will be broken, especially the lining plate of the moving cone is more likely to be broken.
Preventive measures: Install a reasonable iron remover at the head of the feeding belt to effectively remove the iron pieces entering the crushing cavity, so as to ensure the load around the cone liner of the cone crusher, so that the working performance of the cone crusher is continuously optimized, and it has been at a relatively high level. good working condition.
Insufficient filling strength and solidification time of fillers
When the liner is installed, the filler components are not fully mixed and stirred evenly, the filling strength is low, and the liner is easy to break and fail when it is broken; if the solidification time does not reach the specified time, the filler has not been completely solidified, the strength is low, and the liner is also broken when the machine is working. Easy to break and fail.
Preventive measures: ensure that the filler components are fully mixed and stirred evenly to increase the strength of the cured filler; ensure that the filler has a solidification time of about 16 hours to ensure that the filler is completely solidified.
The cutting ring is not welded firmly
When the liner is installed, if the compression cutting ring is not welded firmly, or the weld seam is worn and cracked during the crushing process, the liner of the cone crusher will be loose and easy to break and fail.
Precautionary measures: When installing the liner, ensure that the upper pressure-cut ring and the liner are firmly welded, and in the process of crushing, check whether the weld is cracked in time, and re-weld it in time if there is crack.
The locking screw is not fastened in place
When the liner is installed, the locking screw is not tightened in place, and the fastening strength is not enough, and the liner is loose during the crushing process and is easy to break and fail.
Precautionary measures: When installing the liner, the locking screws must be fastened in place and have sufficient fastening strength to ensure that the liner will not loosen when it is broken.
The fit between the moving cone liner and the moving cone is not tight
When the liner is installed, the contact surface between the moving cone and the moving cone liner is not cleaned cleanly, and the fit is not tight. When the liner is broken, the liner is loose and broken.
Precautionary measures: When installing the liner, the mating surface of the moving cone and the liner of the moving cone should be thoroughly cleaned to make them in close contact.
Improper installation of liner
The liner is not leveled and adjusted during installation, and it is biased to one side. When the liner is broken, the load on the liner is uneven, and it is easy to break, loose and fail.
Precautionary measures: level and adjust the lining board during installation, so that the surrounding load is even when the lining board is broken.
If the ore is directly added into the crushing cavity, it is easy to overload the crusher and cause uneven wear of the liner.
Preventive measures: Make sure that the ore feed is in the middle of the distribution plate of the crusher, and is evenly dispersed in the crushing cavity through the distribution plate, and the materials that meet the requirements of the machine must be input.
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