Pneumatic conveyor with categorised screening function

The utility model relates to a pneumatic conveyor with categorised screening function, including inhaling material mouth, inlet pipe, material storehouse, exhaust tube, dust collector, roots vacuum pump, its characterized in that: the inside in material storehouse is equipped with three -layer vibratory screen, the equal slanting installation of three -layer vibratory screen, both ends pass through elastic component and link to each other with material storehouse inner wall, and vibratory screen downward sloping one end links to each other the department and also is equipped with screening material mouth with material storehouse inner wall. The utility model overcomes current pneumatic conveyor can not sieve the material, can not be according to the categorised problem of granular size.