60 results about "Hemp oil" patented technology

The invention discloses a preparation process for hemp oil. The hemp seeds are subjected to three-stage screening the hemp seeds are separated from impurities; the selected hemp seeds are stir-fried;a squeezing machine is used for squeezing the hemp seeds at low temperature; the hempseeds are squeezed into hemp oil; the hemp oil is separated from the hemp oil residues; a precipitation box is usedfor carrying out three-stage precipitation on the hemp oil; the precipitated hemp oil is conveyed to a water refining device; the hemp oil subjected to water refining is conveyed to an alkali refining device; the hemp oil subjected to alkali refining is conveyed to a water washing device to be repeatedly washed for three times through a washing device; the washed hemp oil is conveyed to a heatingdevice, the heating device removes moisture contained in the hemp oil, the dehydrated hemp oil is conveyed to a filtering device, and an activated carbon layer arranged on the filtering device removes residual impurities in the hemp oil so that the problems that the hemp seeds are difficult to stir-fry uniformly, and the oil yield of the hemp seeds is relatively low are solved; and the problems that the impurities in the squeezed hemp oil are difficult to remove and thus the hemp oil is poor in taste can be solved.