Device for circulating cooling of reactor

The device comprises a cooling shell, the reactor, an exhaust fan, a water pump, a semiconductor refrigerator and a temperature sensor, a plurality of sets of spraying nozzles are fixedly installed at the bottom of one side of a butt joint pipe, and connecting pipes extending to the bottom of the interior of a water collecting vessel are installed on the two sides of the bottom of a water pumping pipe in a connected mode. One side of the drainage pipe penetrates through the cooling shell to be in butt joint with the top of the water pump, and one end of the water pumping pipe penetrates through the cooling shell to be in butt joint with one side of the water pump. Water drops sprayed on the surface of the reactor can be conveniently collected through the water collecting vessel, water collected in the water collecting vessel is pumped through the water pump and conveyed through the water drainage pipe and the butt joint pipe, secondary spraying is achieved, the effective cooling effect of the device is embodi