in the light of mutual kneading principle among unconsolidated mass, the bearder of' vegetableSeed was designed and put into use. It can avoid the damage of' the direct action between mechanicalelements and seeds can rid of the beard on vegetable seed integument. So smooth seeds wereprovided for' further cleaning and treating seed By regressive cross test, the result was that: the rotationalsaeed of the bearder the pressure of' open vaive at exit, spiral pitch, all of' these have effects on gettingrid of ...