The invention relates to an air-supply-type self-excited oscillation pulse jet aerator, and belongs to the technical field of environment-protecting devices. The invention relates to an improvement of the structure of a self-excited oscillation pulse jet aerator used for
processing sewage. With the aerator provided by the invention, problems such as
high energy consumption and low air-liquid mixing efficiency of an existing jet aerator are solved, and
oxygenation efficiency is improved. The aerator comprises a housing. In the housing, form one side end face to the other side end face of the housing, a water inlet chamber, a
nozzle, an air absorption chamber, a self-excited oscillation chamber inlet
pipe, a self-excited oscillation chamber, a self-excited oscillation chamber outlet
pipe, and a
diffusion chamber are sequentially arranged. The inlet of the water inlet chamber is arranged on one side end face of the housing, and communicates with the
nozzle. The
nozzle communicates with the air absorption chamber. The air absorption chamber communicates with the self-excited oscillation chamber through the self-excited oscillation chamber inlet
pipe. The self-excited oscillation chamber communicates with the
diffusion chamber through the self-excited oscillation chamber outlet pipe. The outlet of the
diffusion chamber is arranged on the other side end face of the housing. An air inlet is arranged on a side wall of the housing, and communicates with the air absorption chamber.