Ultrasonic self-cleaning fire retardant device

The utility model relates to the technical field of fire-retardant devices, in particular to an ultrasonic self-cleaning fire-retardant device, which overcomes the defect that oil smoke is not cleaned thoroughly due to manual cleaning and comprises a shell, a supporting rod is mounted on the shell through a screw, a fire-retardant core is arranged on the shell, an electromagnetic valve is arranged on the shell, and the electromagnetic valve is arranged on the shell. A connecting pipe is arranged on the electromagnetic valve, a pipeline is arranged on the connecting pipe, and a high-pressure spray head is arranged on the pipeline. According to the utility model, the connecting pipe and the pipeline can be automatically opened through the electromagnetic valve, ultrasonic waves are introduced into the cleaning agent, the medium with the ultrasonic waves performs positive and negative cleaning on the fire-retardant core through the high-pressure nozzle, and the ultrasonic self-cleaning system can set the cleanin