The material crushing process of the compound crusher
Now take the corresponding pair of teeth with the same rotation phase on the two rollers of the compound crusher as an example to discuss the mechanism of crushing materials. The action process of the teeth on the material can be divided into three stages. The first stage is the punching, shearing, tearing and crushing of the large materials by the teeth. In this stage, the moving tooth protrusions encounter the large materials, and the staggered tooth tips first crush the materials. Impact shearing, if large pieces of material are not broken, further tearing will be carried out. The crushed materials of the compound crusher are bitten into the teeth and undergo the second stage of crushing. If the material has not been crushed, the teeth will forcefully slide along the surface of the material, and the material will be turned over based on the spiral arrangement of the teeth, waiting for the continued action of the next pair of teeth until the material is broken enough to be bitten.
After the first stage of crushing, the material has been preliminarily crushed to a particle size that can be bitten by the tooth roller, but it still cannot meet the requirements, so it enters the second stage of crushing. In the second section, the material is broken mainly by the squeezing and shearing action of the lower edge of the current pair of teeth and the upper edge of the previous pair of teeth. This crushing section starts from when the material is bitten into the teeth and ends when the previous pair of teeth disengage. termination. It is a process in which the cross-section of a pair of teeth changes from large to small. This process is a process of crushing and discharging materials at the same time. Materials with large particle sizes are forcibly squeezed and cut into pieces as the contained volume gradually becomes smaller. The broken materials It is squeezed out and leaks from the tooth side gap.
When the front pair of teeth of the compound crusher begin to disengage, the cross-sectional area contained between the teeth begins to gradually increase from the minimum. After the second section of the broken material, a large amount of material is leaked and discharged due to the separation of the front pair of teeth. During the discharge process, individual materials with larger particle sizes will be blocked by the crushing rod. When the teeth move to the vicinity of the crushing rod, the large pieces of material resting between the crushing rod and the tooth roller will be further broken up and forced to be discharged. This is the third fragment.
At this point, the crushing stroke of a pair of teeth of the compound crusher ends. Each pair of rings has four pairs of teeth. Therefore, when the toothed roller rotates for one cycle, this process will be carried out four times, and the cycle will be repeated. The material is punched, sheared, pulled, bitten, extruded, sheared, chopped and then discharged forcibly.
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