Rejecting and automatic deviation correcting device for metal detector

The utility model discloses a rejecting and automatic deviation correcting device for a metal detector. The rejecting and automatic deviation correcting device comprises a support, a working table, the metal detector and a controller. The support is provided with the working table which is provided with a belt. The metal detector is hollow, penetrates through and is erected on the working table and is connected with the controller. The controller is connected with a motor which drives belt transmission. The working table is provided with a guide rail, and a sliding block is arranged on the guide rail. The controller is further connected with a solenoid valve which is connected with an air cylinder. The air cylinder is connected with the sliding block. The working table is further provided with a photoelectric eye and a deviation correcting air cylinder, wherein the photoelectric eye is arranged below the belt and connected with the solenoid valve. The solenoid valve is connected with the deviation correcting air cylinder which is arranged below the metal detector. By the adoption of the technical scheme, the rejecting and automatic deviation correcting device for the metal detector can accurately reject products containing metal foreign bodies and can automatically correct deviation of the belt; when the belt is thin, the equipment can be adjusted to be normal in time when the belt deviates, so the damage probability of the belt is lowered, food safety is maintained, and labor is saved.