Reflux welding flux cooling device with harmful gas absorption function

The reflow soldering flux cooling device with the harmful gas absorption function comprises a shell and an exhaust fan, installation grooves are formed in the two sides of the outer portion of the shell, two fixing plates are welded and fixed in the shell, placing grooves are formed in the bottoms of the two fixing plates, and the exhaust fan is arranged in the placing grooves. The exhaust fan is installed in the shell and located below the fixing plate, limiting plates are fixedly installed on the two sides of the outer portion of the exhaust fan, installation plates are arranged at the bottoms of the limiting plates, screws are arranged between the limiting plates and the installation plates, and a first connecting pipe is fixedly connected to the top of the shell. According to the detection device for the ball screw, harmful gas is sucked into the shell through the exhaust fan, the harmful gas is prevented from entering the external environment and affecting the health of workers, then the harmful gas is g