Catering oil fume purification device

The utility model discloses a catering oil fume purification device. The catering oil fume purification device comprises a first pipeline, a second pipeline, a rain shielding cover, a ventilation plate and a liquid storage tank, when the catering oil fume purification device is used, the negative-pressure fan, the UV ultraviolet irradiation lamp and the water pump are controlled to start to work through the switch, at the moment, the negative-pressure fan starts to suck external oil fume into the first pipeline through the air holes, and the oil fume is adsorbed in the first pipeline through the filter plate; at the moment, the gas passing through the filter plate passes through an area irradiated by the UV ultraviolet irradiation lamp and is sterilized and disinfected under the irradiation of the UV ultraviolet irradiation lamp, and at the moment, the photocatalyst spraying agent in the liquid storage tank is conveyed to the atomization spraying head through the liquid outlet pipe under the action of the wat