Efficient energy-saving single-screw extruder

The invention discloses an efficient energy-saving single-screw extruder. The efficient energy-saving single-screw extruder is characterized by comprising a conventional device, a hopper, a machine barrel, a screw rod arranged in the machine barrel, a heating and cooling device, a lathe bed and an electrical control device, wherein the conventional device comprises a main motor and a reduction gearbox, the screw rod adopts equal-width separation-type threads, and the end, back on to the conventional device, of the screw rod is provided with a barrier head. The efficient energy-saving single-screw extruder has beneficial effects that as the screw rod adopts a mode of combining the equal-width separation-type threads and the barrier head, and the design of shallow slot threads is also added, added materials are rapidly and effectively conveyed, the retention time is shortened, efficient low-temperature plasticizing of the materials is accelerated, and the increase of production capacity is guaranteed; as the el