The invention discloses a method for extracting
chlorophyll from waste vegetable leaves, and belongs to the technical field of
chlorophyll extraction, and the method comprises the following steps: S1, collecting the waste vegetable leaves, removing impurities in the waste vegetable leaves, and chopping the waste vegetable leaves, S2, putting the chopped waste vegetable leaves into a squeezer for squeezing, S3, conveying a
mixed solution generated after squeezing to a stacked screw
machine, and carrying out
centrifugal separation on the
mixed solution to obtain the
chlorophyll. The mixed liquid is subjected to
solid-liquid separation through gravity and
extrusion by a stacked screw
machine to obtain relatively pure chlorophyll liquid, S4, the chlorophyll liquid treated by the stacked screw
machine and
solid residues are input into a high-pressure filter pressing device, so that the chlorophyll liquid is purer, and S5, the liquid treated by the high-pressure filter pressing device is subjected to chlorophyll extraction by adopting a proper organic solution, so that the chlorophyll is obtained. Through the combination of the squeezer, the stacked screw machine and the high-pressure filter pressing device, automatic and
continuous production can be realized, a large amount of waste vegetable leaves can be quickly treated, the production efficiency is greatly improved, and the requirements of industrial large-scale production are met.