Formaldehyde-removing air filtering device

The invention discloses a formaldehyde-removing air filtering device. The device includes a shell, a reaction chamber is arranged in the shell, the reaction chamber is provided with an air inlet pipeline and an air outlet pipeline, a storage container is arranged in shell, an ultrasonic atomization sheet is mounted in the storage container, the reaction chamber is further provided with a through hole, electromagnetic valves are arranged on the air inlet pipeline, the air outlet pipeline and the through hole, a first formaldehyde concentration sensor and a control module are arranged outside the shell, and the ultrasonic atomization sheet, the first formaldehyde concentration sensor and all the electromagnetic valves are electrically connected with the control module. The ultrasonic atomization sheet is used for conducting atomization treatment on a formaldehyde remover solution, the atomized formaldehyde remover solution is fully mixed with external air in the reaction chamber, the formaldehyde component in t