Quick dewatering oxygen removal device of laboratory

The utility model provides a quick dewatering oxygen removal device of a laboratory. The quick dewatering oxygen removal device comprises a reaction device single-opening flask, a heating device alcohol lamp, a vacuum pump, a nitrogen steel bottle as well as a glass connecting tube stopper, an iron trestle, a latex tube, a glass guide tube, a glass three-way piston and a control clamp; the single-opening flask is connected with the glass connecting tube stopper and is connected to one end of the glass three-way piston by virtue of a connecting tube, and the other two ends of the glass three-way piston are respectively connected with the nitrogen steel bottle and the vacuum pump by virtue of the guide tube. At the heating state, the three-way piston is adjusted to be connected with the flask and the vacuum pump, so that steam and air in the system are removed by utilizing the vacuum pump; then the three-way piston is adjusted to be connected with the flask and the nitrogen steel bottle, so that the system is fully filled with nitrogen, the operation is repeated twice, the control clamp is closed, and then the system can reach an anhydrous oxygen-free state. The quick dewatering oxygen removal device of a laboratory has the characteristics of simplicity and convenience in operation, low cost, easiness and practicability, and the operation safety can be improved.