启普发生器可用来制取氢气、二氧化碳等气体，“它可以随时使制备气体的反应发生或停止，使用起来十分方便。”（课本语），但是现在的启普发生器却存在一点不足之处：双球形容器的双球接口，与球形漏斗下端管口直径不能吻合，存在空隙，容易使块状药品（如锌粒）掉下去，反应? Kaipu generator can be used to produce hydrogen, carbon dioxide and other gases, “it can make or stop the reaction of preparation gas at any time, it is very convenient to use.” (Textbook), but now there is a shortage of Kaipu generator At the same time, the double ball interface of the double spherical container cannot match the diameter of the lower end of the spherical funnel, and there is a gap. It is easy to make the bulk drug (such as zinc particles) fall off.