Sieve sand machine is modelled on the artificial using cant sieve network sieve sand of work principle, used flat reset rolled sieve tube, and guarantee material flow in sieve tube in the of more circle spiral leaves between can continuous rolled sieve five circle above, thus makes sand material repeatedly tumbling, and sliding and full discrete, and separation; different Yu oblique reset rolled sieve caused of size material mutual pushed, and buried pressure, screening process rush; also different Yu oblique reset shaker of size material vibration jumped, and mixed material.