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本文简单介绍了LCQJ3型清率机的工作原理，对该机采用的两自由度七杆工作机构进行了分析，在满足工作阻力和运动轨迹的前提下，建立了优化设计数学模型，并将优化结果与优化前的设计方案进行了比较。
In this paper, the working principle of LCQJ3 purifying machine is briefly introduced. The two-freedom seven-bar working mechanism used in this machine is analyzed. Under the precondition of meeting the working resistance and motion trajectory, the mathematical model of optimal design is established, The results are compared with the pre-optimization design.