The material enters the sand making machine from the feed hopper, and the material is divided into two parts by the divider, part of which enters the impeller rotating at high speed from the middle of the divider, and is rapidly accelerated in the impeller, the acceleration of which can reach hundreds of times the acceleration of gravity, and then is thrown out from the three evenly distributed runners of the impeller at a speed of 60-70 m/s, firstly impacting and crushing with a part of the material falling down from the divider around, and then impacting together. The material lining layer is rebounded by the material lining layer and impacted diagonally upwards to the top of the vortex cavity, which then changes its direction of movement and deflects downwards, forming a continuous material curtain. In this way a piece of material in the vortex crushing cavity by two to several times the rate of impact, friction and grinding crushing action, the crushed material by the lower discharge port discharge.
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