设计实现了一种新型自动深冷及活化分子筛的吸附泵。进行了吸附能力设计,采用基于PLC(可编程逻辑控制器)软硬件为核心的电气系统,方便地实现了对分子筛吸附泵的液氮自动输送以维持液氮量及分子筛活化的远程控制,有利于操作者操作和安全保障。验证实验结果表明,该分子筛吸附泵能快速吸附泄漏到密封容器里的有害气体,且吸附效果良好。 Design and implementation of a new type of automatic cryogenic and activated molecular sieve adsorption pump. Adopting the electrical system based on PLC (programmable logic controller) hardware and software, the automatic control of the liquid nitrogen transport of molecular sieve adsorption pump to maintain the quantity of liquid nitrogen and the activation of molecular sieve has been conveniently implemented. Benefit the operator operation and safety and security. The experimental results show that the molecular sieve adsorption pump can quickly adsorb the harmful gas leaked into the sealed container, and the adsorption effect is good.