Breathing valve purging assembly and breathing machine

The utility model belongs to the technical field of breathing equipment, and particularly relates to a breathing valve purging assembly and a breathing machine. The breather valve purging assembly comprises a breather valve and an air path control assembly; the breather valve comprises a valve body and a sensor diaphragm, and the sensor diaphragm is arranged in the gas channel to divide the gas channel into a front-section channel and a rear-section channel; the gas path control assembly comprises a first gas blowing gas path, a second gas blowing gas path, a first switch valve and a second switch valve, the first gas blowing gas path is connected between the gas source and the front-section channel, and the first gas blowing gas path conveys gas to the front-section channel when the first switch valve is opened so as to blow accumulated water at the front end of the sensor diaphragm; the second blowing gas circuit is connected between the gas source and the rear-section channel, and the second blowing gas ci