Mechanical automatic backwashing sewage treatment device

The utility model discloses a mechanical automatic backwashing sewage treatment device which comprises a driving motor arranged at the top of the treatment device, and the bottom of the driving motor is connected with a driving shaft; the transmission structure is connected with the bottom end of the driving shaft, and a filter screen is arranged over the transmission structure; and the gear set is arranged in the treatment device, and a vibration structure connected with the filter screen is arranged on the side face of the gear set. According to the mechanical automatic backwashing sewage treatment device, a transmission structure is designed, so that rotation of a stirring shaft and vibration decontamination work of a filter screen can be realized through a driving motor, the manufacturing cost of the device is reduced, and meanwhile, the functionality of the device is more comprehensive; according to the sewage treatment device, oil stains, sludge and water in sewage can be effectively separated, and mean