Self-cleaning structure of ultrasonic gas meter transducer

A self-cleaning structure of an ultrasonic gas meter transducer belongs to the technical field of metering instruments and is provided with a flow channel and at least one pair of transducers, the flow channel is provided with at least one pair of cleaning and blowing devices, and gas outlets of the cleaning and blowing devices correspond to ultrasonic transmitting and receiving surfaces of transducer matching layers of the transducers. An air inlet of an air source channel of the cleaning blowing device is communicated with the flow channel, and an air outlet of the air source channel is formed in the inlet negative pressure position of the cleaning blowing device. The cleaning and blowing device can comprise a motor and an impeller, and the central axis of the impeller and the ultrasonic transmitting and receiving face of the transducer matching layer are obliquely arranged. When the chip on the control panel detects that the amplitude received by the transducer is lower than a set value or different gases