Study On The Separation Of Buckwheat Hull And Dust

According to the problem that the dust mixed with hull together when adopting the suction separation after shelling of Buckwheat Sheller and can not take full use of buckwheat hull and dust.we designed a closed buckwheat hull and dust separation device by using the 3D SolidWorks and AutoCAD , the process of separating and collecting dust and hull were completed in a sealing space.Solved the problem that the separating of dust and hull during the process of buckwheat shelling. Selecting the inlet velocity of settlement device, location of partitions and partitions into depth as factors of affecting the separation performance, take buckwheat hull separation rate ,the dust contain rate and the dust collection rate as targets of measuring separation performance . Conducting single factor and orthogonal tests respectively . Finding the internal rule of buckwheat hull separation rate, the rate of dust and dust collection rate with the three test indicators that are the inlet velocity of settlement, location of partitions, partitions into depth. The result shows that when the inlet velocity of settlement device is 6.0～8.5 m/s, the dust collection rate increase with the increase of inlet velocity of settlement device, the buckwheat hull separation rate is high and the dust contain rate is low; when the partitions into depth is 280～320 mm, the dust collection rate reduce with the increase of partitions into depth , the buckwheat hull separation rate is high and the dust contain rate is low; Selecting the inlet velocity of settlement, the partition location and the partition into depth design orthogonal experimental , the results show that when the partition is located in the middle of the settlement device, inlet velocity is 6.3 m/s, partitions into depth 280 mm, the buckwheat hull separation rate reach to 96%, the dust collection rate reach to 99.5% and dust containing less than 0.6%.