Aeration head with adjustable aeration aperture

The utility model belongs to the technical field of accessories of aeration equipment in environmental protection equipment, and particularly relates to an aeration head with adjustable aeration aperture. The utility model provides an aeration head with an adjustable aeration hole diameter, and aims to solve the problem that the diameter of an aeration hole for aeration in the prior art cannot be adjusted. An aeration head with adjustable aeration aperture comprises a body, the body comprises a top surface and a bottom surface opposite to the top surface, the top surface is a spherical surface, a buffer cavity for temporarily storing gas is arranged in the body, the bottom surface is provided with aeration holes, and the aeration holes are communicated with the buffer cavity; the bottom surface is also provided with a convex column which protrudes towards the direction far away from the top surface, the convex column is sleeved with an aperture adjusting disc, and the diameter of the aeration hole can be conv