Underarm automatic inflation life buoy

Abstract

The invention relates to an underwater lifesaving device, in particular to an underarm automatic inflation life buoy. The underarm automatic inflation life buoy comprises a hollow elastic plastic ring (1) with a notch, wherein two clamp buckles (2) are respectively arranged at two ends of the notch, a C-shaped air sac (3) sleeves the exterior of the hollow elastic plastic ring (1), two ends of the C-shaped air sac (3) are respectively fixed at two ends of the elastic plastic ring (1) in seal mode, a stop valve is arranged at one end of the elastic plastic ring (1), and communicates an inner space of the elastic plastic ring (1) with the C-shaped air sac (3), dichlorodifluoromethane and fluoro trichloromethane are placed in the elastic plastic ring (1), and a volume ratio between the dichlorodifluoromethane and the fluoro trichloromethane is 1:0.8-1.2. The underarm automatic inflation life buoy has the advantages of being good in safety, quick to inflate, and low in cost, and can be widely popularized and used by swimmers.

Description

technical field [0001] The invention relates to a lifesaving device in water, in particular to an underarm automatic inflatable lifebuoy ring. Background technique [0002] The existing automatic inflatable life-saving devices in water use calcium carbide and water to react to produce acetylene to inflate. Although the reaction is fast, acetylene is a highly flammable gas and has certain dangers; some use gunpowder, which burns and emits a large amount At the same time, the gas will also generate a large amount of heat, which has higher requirements on the device and is more dangerous; there is a principle of using liquid oxygen or carbon dioxide to change the volume of gaseous oxygen or carbon dioxide to provide buoyancy, or It uses high-pressure gas to change low-pressure gas to inflate, but these two methods have very high requirements for gas storage devices, and generally require high-strength gas storage devices, which increases the weight and cost of life-saving devic...

AI Technical Summary

Problems solved by technology

[0002] The existing automatic inflatable life-saving devices in water use calcium carbide and water to react to produce acetylene to inflate. Although the reaction is fast, acetylene is a highly flammable gas and has certain dangers; At the same time, the gas will also generate a lot of heat, which has higher requirements on the device and is more dangerous; there is a principle that the volume of oxygen or carbon dioxide in the liquid state becomes gaseous to increase to provide buoyancy, or It uses high-pressure gas to change low-pressure gas to inflate, but these two methods have very high requirements for gas storage devices. Generally, high-strength gas storage devices are required, which increases the weight and cost of life-saving devices; other chemical methods are also used. Those that produce gas, however, react slowly and cannot inflate quickly and effectively, posing a certain risk to drowning victims

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