Extrusion dehydrator for kitchen garbage treatment

The utility model relates to the technical field of kitchen garbage treatment, in particular to an extrusion dehydrator for kitchen garbage treatment, which comprises a rack, a box body with openings in one end and the bottom is arranged at the top of the rack, a filter cartridge is fixed in the box body, strip-shaped filter holes are formed in the filter cartridge, a spiral shaft is rotatably arranged in the filter cartridge, and a screw rod is arranged in the spiral shaft. A spiral shaft is arranged at one end of the box body, a spiral blade is arranged on the spiral shaft, the screw pitch of the spiral blade is sequentially decreased in the discharging direction, a speed reducing motor is arranged at the other end of the box body, a liquid collecting hopper, a mounting plate and a supporting plate are arranged on the rack, the other end of the spiral shaft rotationally extends to the mounting plate, and a first material blocking plate is fixed to the supporting plate; a plugging plate is slidably sleeved o