This invention discloses a self-cleaning screw extruder for
polyester filament production, comprising a screw
extrusion structure, an auxiliary anti-splash component slidably connected to the screw
extrusion structure, a high-temperature rinsing structure slidably connected to the screw
extrusion structure, a spinneret structure detachably mounted on the screw extrusion structure, an extrusion
assembly detachably mounted on the bottom box, a limit adjustment component fixed on the extrusion
assembly, a guide
assembly passing through the extrusion assembly, an upper semi-circular sealing shell sealingly connected to the upper side of the lower semi-circular sealing shell, auxiliary filters fixed on the left sides of both the lower and upper semi-circular sealing shells, a guide
pipe connected to the left sides of the lower and upper semi-circular sealing shells, a connecting
flange fixed to the left side of the guide
pipe, an
impurity filter embedded in the guide
pipe, and a
discharge pipe connected to the lower side of the lower semi-circular sealing shell. This self-cleaning screw extruder for
polyester filament production automatically cleans the screw rod inside the extrusion assembly, providing auxiliary anti-splash protection and the
advantage of quick spinneret replacement.