The utility model discloses a water
lung diving
gas cylinder-shaped vacuum cup, which comprises a cup body, a cup cover is arranged at the top of the cup body, a knob is arranged at the top of the cup cover, a base is arranged at the bottom of the cup body, the cup body comprises a cup body outer layer and a cup body inner layer, a vacuum heat
insulation layer is formed by the cup body outer layer and the cup body inner layer, and the cup body outer layer and the cup body inner layer are connected with the base. An
aerogel heat
insulation layer is arranged on the inner side of the cup body, the rotary knob is in the shape of a water
lung diving
gas cylinder valve, the base is in the shape of a water
lung diving
gas cylinder base, a sealing
rubber ring is arranged at the connecting position of the cup cover and the top of the cup body, and a vacuum heat insulation cavity is formed in the inner side of the cup cover. And the knob is provided with an operating rod which is transversely arranged. The water-lung diving cup is simple in structure, the cup cover is easy to open, the whole shape of the water-lung diving cup is like a water-lung diving gas cylinder, individuation is strong, the water-lung diving cup is suitable for water-lung diving, the heat preservation effect is good, the heat preservation performance meets the use requirement, sealing performance is good, and the water-lung diving cup is durable and good in use effect.