This utility model discloses a twin-screw extruder with zero contact between the barrel and the screws, which comprises a barrel and two intermeshing screws arranged in the barrel. The barrel is provided with a feed inlet and a discharge port, a support frame is fixedly arranged at the discharge port, two positioning shafts are fixedly connected with the two screws in a coaxial manner respectively, and the two positioning shafts are rotatably mounted on the support frame. One end of each screw is connected with a power device, and the other end is rotatably mounted on the support frame through the positioning shaft. Therefore, both ends of the screws are supported respectively, which greatly reduces the swing amplitude of the screws. The screws do not contact the barrel when rotating and always keep zero contact, and the gap between the screws and the barrel is uniform, so that the screws rotate stably, and material pollution caused by impurities generated by scraping and rubbing is avoided.
Country Code: CN
Application Number: CN202321091784.4
