Drying device for building material

The invention relates to the field of drying, in particular to a drying device for building materials. Comprising a shell, multiple air supply channels, multiple trigger rods and multiple control mechanisms. An elastic gauze element for bearing wood covers the upper part of the shell; an air outlet penetrating through the upper surface of the shell is formed in the top of the air supply channel; a plurality of rotatable air guide plates extending left and right are arranged in each air supply channel; the trigger rods are arranged between the elastic gauze element and the air outlets in a vertically movable mode and correspond to the air outlets in a one-to-one mode. The control mechanism is installed on the shell and connected with the trigger rod and the lower end of the air deflector. When the elastic gauze element sinks downwards to press the trigger rod, downward movement of the trigger rod is converted into front-back movement of the lower end of the air guide plate through the control mechanism, so tha