The invention discloses an extruder. The extruder structurally comprises a shaft driving motor, a
square cylinder oil scraping sleeve seat, a feeding bundle cylinder groove, a single-screw horizontalgroove, a bearing seat, a base box shell and a storage square box, and realizes that the
square cylinder oil scraping sleeve seat is matched with the feeding bundle cylinder groove, meat is guided into a flat
square cylinder groove through the feeding bundle cylinder groove; a rotary blade
paddle seat in the flat square cylinder groove is mounted in an octagonal inner groove in a sleeving mode, and is connected with a knife
sharpening scraping bracket for oil scraping, so that an annular surface knife supporting, oil cleaning and discharging effect is formed; the whole inner and outer shell frames are prevented from permeating oil blocks, the inner self-cleaning and connecting
pipe discharge effects are achieved through an oil suction rod ball cylinder, the maintenance degree of a rotatingblade
edge surface and the knife supporting
millstone effect are improved; then a spiral cutter surface is matched with
extrusion operation to rotate and ream the
meat paste to form a piled meat density compaction effect, so that the sufficient degree of meat lines and the oil removal operation are improved, the percent of pass of people for purifying extruded meat
processing food materials is improved, the internal
impurity removal effect of the extruder is optimized, and the
processing quality is improved.