Intermittent circulating aeration device of aeration tank

The utility model provides an intermittent circulating aeration device of an aeration tank, and belongs to the technical field of aeration devices. The intermittent circulating aeration device of the aeration tank comprises an aeration mechanism and an adjusting mechanism, the aeration mechanism comprises the aeration tank, a pair of air outlet discs are installed in the aeration tank, a plurality of air outlets are formed in the tops of the air outlet discs, air outlet pipes are connected to the air outlets, an air blower is arranged on the outer side of the aeration tank, and the air blower is connected with the adjusting mechanism. The adjusting mechanism comprises an adjusting sleeve, one end of the adjusting sleeve is connected with the output end of the air blower, the other end of the adjusting sleeve is connected with the connecting pipe, a circular truncated cone cover is installed in the adjusting sleeve, a clamping ball is clamped to one end of the circular truncated cone cover, and a spring is con