Light source replacement device in toluene chlorination reaction

The utility model belongs to the technical field of toluene chlorination. The utility model relates to a light source replacing device in toluene chlorination reaction. The lamp comprises a lamp source, a lampshade and a lamp holder, a fixedly connected lampshade is arranged at the bottom of the lamp holder; a fixedly connected substrate is arranged at the bottom of the lamp holder in the lampshade; a plurality of lamp sources are arranged; the lamp source is arranged on the substrate; the base plate is in a hollow barrel shape. A fixedly connected cooling pipe is arranged at the bottom of thelamp holder positioned in the substrate; the bottom of the cooling pipe is sealed; a plurality of uniformly distributed cooling holes are formed in the bottom of the cooling pipe; a cooling water tank is arranged on one side of the lampshade; a cooling pump is arranged in the cooling water tank; a flow guide pipe is arranged at the output end of the cooling pump, the extending end of the flow guide pipe penetrates throug