Totally-enclosed water bath nitrogen blowing instrument

The utility model discloses a totally-enclosed water bath nitrogen blowing instrument. The equipment comprises an equipment main body, a cover is arranged on the outer surface of the upper end of theequipment main body, a blowing needle is arranged in the middle of the front end of the cover, a sealing ring is arranged outside the front end of the cover, an exhaust hole is formed in the outer surface of the lower end of the cover, and a test tube rack is arranged in the equipment main body. The utility model relates to a totally-enclosed water bath nitrogen blowing instrument. Test tube taking and placing and test tube adjusting racks are arranged; people can use the device when using the device, test tube rack without replacement, spring clamping pieces are arranged on the test tube rackand are suitable for test tubes with different thicknesses; the limiting strip is adjusted according to the height of the test tube; by means of the totally-closed design, evaporated waste gas can bedirectionally exhausted fr