Nitrogen blows device

The utility model discloses a nitrogen blows device, including bottle, bottle lid, input tube and output tube, the bottleneck outer wall of bottle is equipped with first screw thread, the inner wall of bottle lid is equipped with the second screw thread that matches with first screw thread, two mounting holes have been seted up to the bottle lid, the one end of input tube is inserted and is established on a mounting hole and inside stretching into the bottle, and the other end of input tube stretches out the bottle lid upper surface, the one end of output tube is inserted and is established on another mounting hole, and the other end of output tube stretches out the bottle lid upper surface, be equipped with first valve on the input tube, be equipped with the second valve on the output tube. Through above -mentioned mode, not only do benefit to title appearance and add hydrochloric acid, make things convenient for the control?of?gases flow to can in time close the valve, reach the purpose of emptying air, the