Air sterilizing and filtering device

The utility model mainly relates to a filtering device, in particular to an air sterilizing and filtering device which is characterized in that a shell is provided with a sterilizing chamber and a power chamber, the sterilizing chamber is arranged at the side part of the power chamber and is communicated with the sterilizing chamber and the power chamber through a cavity positioned on the top or bottom surface in the shell; a through hole for communicating the power chamber with the outside is formed in the shell, and a through hole communicated with the sterilization chamber is formed in theposition, far away from the cavity, of the side part of the shell; a sliding groove is formed in the inner wall of the sterilization chamber; the fan is arranged in the power chamber; the filter screen is arranged between the photocatalytic screen and the cavity and can be drawn out from the side part of the shell through the sliding chute; the ultraviolet lamp is fixed in the sterilization chamber and is used for irradia