Air filtering device

The utility model relates to the technical field of air purification, particularly provides an air filtering device, and aims to solve the problem that a filter of an existing air filtering device is tedious in replacement process. Therefore, the air filtering device comprises a fixing component, a filter, a fan cover and a push-and-pull component, the filter, the fan cover and the push-and-pull component are installed on the fixing component, the fan cover is located above the filter, the two side faces of the fan cover are each provided with at least one guide column, and the push-and-pull component can move front and back relative to the fixing component. Inclined guide grooves are formed in the positions, corresponding to the guide columns, of the push-pull component, the guide columns are located in the guide grooves and can move in the length direction of the guide grooves, the guide columns can move between the bottom ends and the top ends of the guide grooves by moving the push-pull component, and the