为提高超临界流体萃取间歇操作的效率,设计活塞料仓链式的连续萃取器,将进、卸料操作移出到萃取工艺流程之外,实现连续萃取.通过试验研究了单、双道O形圈及V形粉尘阻挡密封圈不同组合对动密封压力、泄漏量和磨损行程的影响,得出不同的关系曲线.对O形圈接触可靠性进行模拟分析,确定密封的有效性和磨损行程.分析活塞仓体的受力情况并进行结构设计和校核,设计了针对不同组分萃取物进行分级萃取的连续萃取器,并给出具体工艺的实现方式.%In order to improve the intermittent operation efficiency of supercritical fluid extraction,continuous extractor of piston bin chain was designed which moved Inlet and discharge operations outside of solvent extraction process to realize the continuous extraction.With the study on different combination of the single,double O-ring and wshaped dust block ring,the curve of different for dynamic seal pressure,leakage and wear trip were summarized.The effectiveness of the seal and wear trip was confirmed by using the simulation anal ysis of the ()-ring contact reliability.Moreover,the extractor of different components in succession was also designed for fractional extracts and the specific process was put forward.
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