The working principle of sand making machine
The material enters the sand making machine from the hopper, and the material is divided into two parts by the distributor. One part enters the high-speed rotating impeller from the middle of the distributor, and is rapidly accelerated in the impeller. The acceleration can reach hundreds of times the acceleration of gravity. Then it is ejected from the three uniformly distributed flow channels of the impeller at a speed of 60-70 m/s. First, it is impacted and crushed with a part of the material that has fallen from around the distributor, and then impacted on the material lining in the vortex cavity. , It is rebounded by the material lining, impacts diagonally upwards to the top of the vortex cavity, then changes its moving direction, deflects to move downwards, and the material emitted from the impeller runner forms a continuous material curtain. Such a piece of material is subjected to two or even multiple chance impacts, frictions and grinding and crushing effects in the vortex crushing cavity. The crushed materials are discharged from the lower discharge port. In the whole crushing process, the materials will impact and crush by themselves without direct contact with the metal elements, but will impact and friction with the material lining to crush, which reduces corner pollution and prolongs mechanical wear time. The ingenious air flow self-circulation inside the vortex cavity eliminates dust pollution.
The material falls into the hopper, enters the high-speed rotating rotor through the central feed hole, is fully accelerated and thrown out through the launching port, first collides with a part of the free-falling material after rebounding, and then impacts the surrounding vortex cavity together. The vortex material liner (or counterattack block) is first bounced to the top of the crushing chamber, and then deflected to move downward, colliding with the material emitted from the impeller runner to form a continuous material curtain, and finally discharged through the lower discharge port .
The new sand making machine uses a diamond-shaped combined impact block (throwing head) instead of the original integral hammer head and square combined impact block. The impact block alloy is "hard but not brittle, tough and tough" and has good high temperature resistance. The impact block is directly forged with imported high-quality alloys, with its abrasion resistance and toughness, which is at the leading level in China, greatly improving work efficiency, and its service life is 3-5 times longer than that of high manganese steel, which improves production output and quality.