The invention relates to sports equipment, in particular to a narrow-opening type snorkeling-preventing breathing tube head based on a reverse two-stage air inlet channel, which is simple and small instructure and capable of preventing a user from being inhaled by waves during snorkeling. The tube head comprises an outer cover, wherein a narrow cover opening is arranged on the lower portion of the outer cover, a wide cover body is arranged on the upper portion of the outer cover, and a first-stage air inlet channel is formed; a breather pipe which extends into the outer cover from the narrowcover opening and is mounted in the outer cover through a mounting frame to form a second-stage air inlet channel with opposite air flow directions, wherein a mounting head is arranged at the lower end of the breather pipe; the upper end of the breather pipe is close to the top in the outer cover; and a small number of small holes are formed in the wide cover body and are slightly lower than the upper end of the breather pipe.
本发明涉及一种运动器材,具体而言,涉及一种结构简单小巧,能避免使用者在浮潜时被波浪呛水的,基于逆向二级进气道的一种窄口式防进水浮潜呼吸管头,由以下部分组成:一个外罩,外罩下部是窄罩口,外罩上部是阔罩身,形成第一级进气道;一个通气管,从窄罩口伸入外罩内,通过安装架安装在外罩中,形成气流方向相反的第二级进气道;通气管下端设置一个安装头;通气管的上端接近外罩内顶部;阔罩身上有少量小孔,小孔高度略低于通气管上端。
Narrow-opening type snorkeling-preventing breathing tube head based on reverse secondary air inlet channel
基于逆向二级进气道的一种窄口式防进水浮潜呼吸管头
2021-02-05
Patent
Electronic Resource
Chinese
IPC: | B63C LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS , Zuwasserlassen, Trockenstellen, Docken oder Bergen von Schiffen |
Water-intrusion-preventing snorkeling breathing tube head based on small hole throttling effect
European Patent Office | 2021
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