how to separate grape seed from grape skin? Please choose our HYL-8 grape seed cleaning machine which has 3 screen layers. The top and bottom sieves would detect grape skin larger and smaller than the grape seed. the middle sieve would hold the cleaning grape seed and discharge it. With air blower, it can blowing the light impurities and coarse out. It’s cleaning rate could be 98%. more information, please visit: www.chinavibratingscreen.com