Multi-neck flask thermometer bottle plug

A multi-opening flask thermometer bottle plug comprises a bottle plug, a stepped through hole is formed in the bottle plug and comprises a thick hole and a thin hole, a plug is fixedly connected in the thick hole, an insertion hole coaxial with the thin hole is formed in the plug, one-way valve plates are hinged to the lower end of the bottle plug and the lower end of the plug, and the two one-way valve plates are used for sealing the thin hole and the insertion hole respectively. The utility model is used for solving the problem that certain potential safety hazards exist as gas in a flask is easy to escape from the flask when a bottle plug is inserted and pulled. 一种多口烧瓶温度计瓶塞，包括瓶塞，瓶塞内设有阶梯通孔，阶梯通孔包括粗孔和细孔，在粗孔内设有固定连接有堵头，堵头内设有与细孔同轴的插孔，在瓶塞下端和堵头下端均铰接有单向阀片，两个单向阀片分别用于将细孔和插孔封闭。本实用新型用于解决插拔瓶塞，烧瓶中气体容易冒出烧瓶，存在一定安全隐患的问题。