Combined air purifier

The utility model relates to a combined air purifier for purifying air, which is provided with an outdoor air pump connected with orderly connected air purifying pools through air delivery pipes. A ventilation emery strip connected to the air delivery pipe in the purifying pool passes through an anti-splash isolation plate and is arranged in liquid at the bottom of the purifying pool and the other end of the ventilation emery strip is connected with an air inlet pipe joint of the top cover of the purifying pool. The air delivery pipe connected with an air discharge pipe joint of the top cover of the pool is connected with an air inlet pipe joint of the top cover of the next purifying pool. Liquid in a purifying pool A is disinfecting liquid, liquid in a purifying pool B is water, liquid in a purifying pool C is sodium hydroxide and the liquid in a purifying pool D is water. Outdoor air is orderly sent to the mutually connected purifying pools through the air delivery pipes by the air pump. Harmful gas, such as virus, bacteria, particulates, sulfur dioxide, carbon dioxide, etc., in the air is removed. The utility model can enhance air quality and provides natural air with no pollution for rooms, hospital wards, meeting rooms, epidemic control vehicles, etc.