该泵是以循环水为工作流体，采用射流技术产生负压而设计的一种新型真空抽气泵，它不仅是一种真空抽气装置，同时还能向反应装置中提供循环冷却水，该泵具有不用油、无污染、耐腐蚀、噪音低、方便灵活等特点。材料采用防腐机芯和不锈钢机芯两种型号；立式电机，泵体直接潜入水下，不需加引水，一机多用。
（1）一机多管作业，本机装有三套抽气头，可单独或并联使用。
（2）噪音小，移动方便。
（3）无污染，本机箱体为聚氯乙稀塑料，外壳采用不锈钢和冷板静电喷塑壳两种。

This Pump is of jet pump with circulating water asworking liquid and designed by negative pressure produced from spraying liqunid .It is ar new vacuumair pump, which can provide with circulating cooling water to the reaction of device at same time. The pump has the advantages lf unuse oil,non-pollrtion corrosion resisting, lower noise and easy movement, one machine with multi-usage.
（1）One machine with multi-pipe operation, Where three sets of air exhaustor are fixed and used independently or parallelly.
（2）Lower noise,Convenient movement.
（3）Non-pollution,The pump body is made of polyvinyl chloride （pvc）plastics,and the onter cover is of cold-rolled steel plate with backing finish.