Production equipment and method for graphene with less than three layers and ultrasonic stirring and feeding device

The invention discloses a graphene ultrasonic stirring and feeding device with less than three layers, which comprises a material slurry tank, a spiral conveyor and a material conveying pipe, a stirring paddle is arranged in the material slurry tank, a discharge port of the stirring paddle is communicated with a feed port of the spiral conveyor through a feed pipe, and the graphene ultrasonic stirring and feeding device is characterized by further comprising an ultrasonic oscillator, a sprayer and a first valve, the first valve is mounted on the material conveying pipe; one end of the material conveying pipe is connected with a material outlet of the spiral conveyor, and the other end of the material conveying pipe is connected with the sprayer; a feeding port of the ultrasonic oscillator is connected with a first pipeline, a second valve is arranged on the first pipeline, the other end of the first pipeline is connected with the material conveying pipe, and the joint of the first pipeline and the material co