Ultrasonic detection and classification device

The invention relates to an ultrasonic detection and classification device which comprises a box body and a differential cavity formed in the end face of the top of the box body. A differential deviceis arranged in the differential cavity, a screening cavity is formed in the lower side of the differential cavity, a classification device is arranged in the screening cavity, the classification device comprises an upper limiting plate and a lower limiting plate which are fixedly arranged between the front side end wall and the rear side end wall of the screening cavity, and the upper limiting plate is located on the upper side of the lower limiting plate. According to the device, ultrasonic waves are used for detecting whether parts are qualified or not, meanwhile, the device is provided with a differential mechanism so as to solve the problem of part accumulation during detection, the device is further provided with a screening mechanism, the screening mechanism can achieve classified conveying of the parts, an