Automatic high-efficient multistage sand sieving machine

The utility model discloses an automatic high-efficient multistage sand sieving machine, including the barrel, divide material seat and cylinder, be equipped with the branch flitch in the barrel, the intraductal filter screen that is equipped with of air-out on barrel top divides and has offered a plurality of feed openings on the material seat, connecting plate on the barrel inner wall passes through the connecting rod and connects the cylinder, the barrel bottom is equipped with the first section of thick bamboo that shakes out, a second section of thick bamboo, a third section of thick bamboo and the fourth section of thick bamboo that shakes out that shakes out that shakes out from inside to outside in proper order, the first section of thick bamboo that shakes out, second shake out a section of thick bamboo, third and shake out a section of thick bamboo and fourth and shake out a section of thick bamboo and all be connected with first mesh screen, second mesh screen, third mesh screen and the slide of fixing on the connecting plate respectively through the hinge, are equipped with a plurality of vibration boards on the connecting plate, divide the gas blow pipe of a material lower extreme to be connected with air nozzle and intake pipe. The utility model discloses the sand sieving machine can carry out multistage screening to mixing gravel automatically, and screening efficiency is high, and is pollution-free, effectively improves the operational environment of device.