Screening device for aggregate made of construction waste and drying mechanism and filtering mechanism of screening device

The utility model relates to the technical field of aggregate, and discloses a screening device for aggregate made of construction waste and a drying mechanism and a filtering mechanism of the screening device, the screening device comprises a supporting frame, the top of the supporting frame is provided with the drying mechanism, the drying mechanism is connected with the filtering mechanism, the drying mechanism comprises a drying box arranged at the top of the supporting frame, and the filtering mechanism is connected with the drying box. A hot air pipe is fixedly connected to the left side of the drying box, an air heater is fixedly connected to the bottom of the hot air pipe, a sliding plate is arranged in the drying box, an electric heating wire is arranged in the sliding plate, and a storage battery is arranged at the bottom of the electric heating wire; according to the screening device for the aggregate made of the construction waste, the aggregate is put into the drying box, the hot air blower is st