Drying and conveying device

A drying and conveying device belongs to the field of chemical manufacturing and comprises a spiral conveyor (1), a driving device (2), an air blower (3) and an air heat exchanger (4), and the spiral conveyor (1) comprises a shell (11), a feeding port (12), a discharging port (13), a transmission structure (14), a spiral center shaft (15) and propeller blades (16); the shell (11) is of a chute structure allowing dehydrated materials to pass through, a hot air return inlet (131) is formed in the front end of a shell clamping cavity (113), and a hot air inlet (132) is formed in the rear end of the shell clamping cavity (113); the air blower (3) is connected with the hot air return inlet (131) through a hot air return communicating pipeline (31), the air blower (3) is connected with the air heat exchanger (4) through an air outlet pipeline (32), the air heat exchanger (4) is connected with the hot air inlet (132) through a hot air pipeline (41), the drying and conveying functions can be integrated, and circulati