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Abstract An air-suction cleaning device was designed to solve the problem in separation of camelliaseed kernel and camellia shell after dehulling camellia seed． The flow model of cleaning device was setup by using ANSYS/Fluent as tool，then the motion trajectories of camellia seed kernel，broken kernel，big shell and small shell were simulated． The simulation results showed that the materials have threestates in air flow field such as sucked out，retention and drop down． The time of small shell staying in thecleaning device is random，and path length increases with the rotational speed of blower． When the rota-tional speed of blower is 1 600 r/min，small shell will be separated effectively，some big shells will besucked out，but seed kernel and broken kernel will not be sucked out． The prototype test showed that thecleaning rate increases with rotational speed of blower，when rotational speed is 1 600 r/min，cleaningrate will reach to 98%．
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Received: 18 September 2020
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2019, Vol. 32 
