The invention discloses a capturing device of dust and
formaldehyde, mainly comprising an L-shaped support, a purifying
dust collector, a water film filter, a connecting
pipe, a
detector, a power line, universal wheels and the like, wherein the water film filter is composed of a transparent cylindrical
pipe and a water tank; the purifying
dust collector is arranged on the inner wall of the L-shaped support, the water film filter is arranged in the L-shaped support and is fixed with the support; one end of the connecting
pipe is connected with the air inlet of the purifying
dust collector, and the other end is connected with the air outlet of the water film filter; the upper end of the cylindrical pipe is provided with an air outlet, and the opening of the lower end is arranged in the water tank. When dust and
formaldehyde in the air are more than the standard levels, the
detector alarms, and the power supply is automatically turned on. Under the effect of the purifying dust collector, the
water level in the cylindrical pipe rises, the air is drawn in from the opening of the lower end of the cylindrical pipe and closely and fully contacts with the water film in the cylindrical pipe with strong colliding and repeatedly
rubbing. The purified air is subject to
dehydration and dehumidification by the purifying dust collector and then is discharged. The device has the beneficial effects of removing fitment
pollution, especially purifying PM2.5 and
formaldehyde, with instantaneous effect, least expenses and great benefits.