Sludge dewatering and drying device

The utility model belongs to the technical field of sludge treatment, and discloses a sludge dewatering and drying device, which comprises a sludge drying chamber provided with an air inlet pipe and an air outlet pipe. A drying bin is arranged in the sludge drying chamber, the air inlet pipe and the air outlet pipe are communicated with the drying bin, the device further comprises a solar air collector, and an outlet of the solar air collector is communicated with the air inlet pipe and used for conveying hot air into the sludge drying chamber; the device further comprises an electric heater, and the electric heater is arranged on the gas inlet pipe side of the outer wall of the drying bin and used for heating gas entering the drying bin. Solar energy is adopted as a main heat source, the purposes of saving energy and reducing consumption can be achieved, and an electric heater is adopted as an electric drive auxiliary heat source, so that sludge dewatering and drying can still be continuously carried out whe