Maintenance-free moisture absorber

The utility model belongs to the technical field of moisture absorbers, and particularly relates to a maintenance-free moisture absorber. Comprising a moisture absorber main body, a moisture absorber top plate arranged above the moisture absorber main body, a controller assembled on one side of the moisture absorber main body, a moisture absorption pipe main body and a heater which are arranged in the moisture absorber main body, an outer net cover and an inner net cover which are arranged in the moisture absorber main body, and a drying agent main body filled between the outer net cover and the inner net cover, a motor is mounted below the moisture absorber top plate; through the power effect of a motor, after arc-surface blocks and fixed blocks are staggered, under the effect of a spring, a rotating disc and an upper structure of the rotating disc have the up-down elastic effect, so that movable rods and scattering rods arranged on the side edges of the movable rods can rotate in drying agent bodies and mov