Mixing device capable of exchanging air

The utility model relates to the technical field of disinfectant mixing, and discloses an air-exchangeable mixing device which comprises a mixing tank body, a communicated connecting pipe is fixed on one side of the upper end of the mixing tank body, an air extracting pump is fixed at the outer side end of the connecting pipe, a guide pipe is fixed at the air outlet end of the air extracting pump, and a treatment tank is arranged at one end, far away from the air extracting pump, of the guide pipe. A gas inlet assembly is arranged on the other side of the upper end of the mixing tank body; according to the novel mixing device applied to air exchange, by arranging an air extracting pump and a treatment tank, sodium hydroxide which reacts with chlorine is added into the treatment tank, air in the mixing tank body is continuously input into the treatment tank through the air extracting pump, and when the air extracting pump works, an air inlet assembly is matched to suck external air into the mixing tank body; a