Photocatalytic air purifier for livestock and poultry breeding greenhouse

The invention provides a photocatalytic air purifier for a livestock and poultry breeding greenhouse. The photocatalytic air purifier for the livestock and poultry breeding greenhouse is characterizedby comprising a plurality of photocatalytic devices, an air inlet/outlet device and a gas monitoring system. The two ends of the photocatalytic air purifier for the livestock and poultry breeding greenhouse are provided with the air inlet/outlet device, and the middle of the photocatalytic air purifier are provided with the plurality of photocatalytic devices which are connected end to end. The photocatalytic device comprises a shell, a rodlike nano titanium dioxide photocatalyst, an ultraviolet lamp (or a fluorescent lamp) and a metal hasp lock; the photocatalytic device shell is of a rhombic structure, the rodlike nano titanium dioxide photocatalyst is loaded on the surface of an inner cavity of an air purification device, an opening is reserved in the lower portion of the photocatalytic devices, and the openin