| Lotus seed is rich in protein, fat, mineral elements and so on, which is used as an important herbal medicine and health care. With the raising of living standard and health consciousness, the need of lotus seed is creased annually. Therefore, the higher standard is needed in the produce and process. However, factors such as little clearance between shell and kernel, variety in breed, diversity in size and irregularity in shape enhance the difficulty of cracking shell and fetching kernel. The existing decladding equipment can't adjust incision force according to the hardness of shell, which leads to the imperfect situation in which flesh lotus seed can be cut easily and dry lotus seed can't be cut. The cracking operation leads to damaged and broken kernels. Research on dried lotus seed shelling machine of key component and determine the decladding mechanism to find effective method and provide technical data of equipment.According to the understanding of inland and oversea materiel characteristics and threshing technologies of some nuts, some physical parameters of dry red and white lotus seed including the out size, clearance between shell and kernel of lotus seed, moisture are tested and analyzed. It is indicated that at the same moisture, their sizes and the thickness of lotus seed shell, are centralized and clearance between shell and kernel is littler than other's agricultural materials. These data may help to design equipment for processing lotus seed.On the base of the above researches, in order to raise the rate hulling and reduce the crushing rate, a machine of the dried lotus seed peeling testing furniture developed by myself was use as experimental model A was carry out to study different parameters of the cutter. The effects of knife-edge clearance, knife-edge angle and force on the rate hulling and crushing was investigated By means of tests of between subjects effects, the preferable combination among three factors was gained.
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