Juice extractor

A juice extractor having a screw in a housing mounted on a shaft for being driven by a motor in a driving unit and a juice extracting member at a fore end of the screw for extracting juice from raw material introduced through a hopper, the juice extractor comprising:

• the screw;
• the juice extracting member;
• and,
• a secondary juice outlet, wherein,
• the screw having
• a plurality of thread end portions at each of which a thread starts, and vacant portions, both on an outer circumference thereof,
• a front portion having a pressing portion with a slope to reduce a diameter, and
• a fore end portion formed connected to the front portion and having helical threads,
• the juice extracting member having
• a cylindrical extracting net member with a juice extracting net on an outer circumference, and a plurality of longitudinal ribs on outside of the juice extracting net, for insertion of the fore end portion of the screw thereto, and
• a mounting member with coupling grooves in an inside diameter thereof with a number and a size to correspond to the ribs on the juice extracting member, for inserting and coupling thereto, a packing with a split portion at a thin central portion split radially for providing a passage, and a discharging portion at a front portion thereof formed as a unit with the mounting member for tight insertion into a discharge opening (W) in a fastening cap (C), and
• the secondary juice outlet being under a fore end of the housing for discharge of juice extracted secondarily pressed at the juice extracting member.