Reflux device for unsaturated resin reaction kettle

The utility model discloses a backflow device for an unsaturated resin reaction kettle, and particularly relates to the field of reaction kettles, which comprises a condenser pipe and a condenser input pipe, pressing discs are fixedly mounted on the opposite sides of the condenser pipe and the condenser input pipe, and air exhaust ports are formed in the opposite sides of the two pressing discs. Air outlets are formed in the sides, close to the condensation pipe, of the two pressing discs, and a connecting pipe is integrally formed on the opposite sides of the two pressing discs. In the specific using process, the holes are formed in the surface of the pressing disc, the pressing disc and the rubber gasket are tightly sucked through the air pressure principle, and therefore it can be guaranteed that the sealing performance of the connecting position is good, and leakage of raw materials cannot occur; through the arrangement of the first sealing plug and the second sealing plug, when disassembling is needed, o