The invention discloses an environment-friendly efficient sand making
machine adopting centrifugal crushing and sand discharging. The environment-friendly efficient sand making
machine adopting centrifugal crushing and sand discharging comprises a stone crushing and sand making main
machine and a machine seat connected to the bottom of the stone crushing and sand making main machine. A crushing cavity is arranged in the stone crushing and sand making main machine. The upper end and the lower end of the stone crushing and sand making main machine are provided with a feed port and a
discharge port which communicate with the crushing cavity. A crushing device used for crushing building stone is arranged in the crushing cavity and comprises a crushing rotor
assembly and crushing wall plates, wherein the crushing rotor
assembly is rotationally connected and installed on the front wall face and the back wall face of the crushing cavity, the crushing wall plates are installed on the left andright inner walls of the crushing cavity, and the horizontal interval between the outer wall of the crushing rotor
assembly and the crushing wall plates forms a passage. A material receiving hopper used for containing and receiving sand is connected to the lower end of the
discharge port in a sealed manner. The crushing rotor assembly rotates so as to form an
airflow which starts from the inside of the crushing cavity, turns along the crushing rotor assembly, passes through the passage and then enters the material receiving hopper, the crushed sand finished products are rapidly discharged outof the crushing cavity, secondary
impact on small sand particles meeting the particle size is reduced, and therefore the
powder content is reduced.