Hollow single screw extruder with vibrating mandrel

The invention relates to a hollow single screw extruder with a vibrating mandrel.The hollow single screw extruder comprises an extruder head, a machine cylinder, a hollow screw with an inner threaded groove, a hopper, a stand, an angular-contact bearing pack, a transmission mechanism, a motor, a fixing seat, a gear and the mandrel.The hollow screw is located in the machine cylinder and can rotate, a central hole is further formed in the hollow screw, the mandrel is located in the central hole of the hollow screw, and the hollow screw can relatively rotate between the machine cylinder and the mandrel.The machine cylinder, the hollow screw and the mandrel are coaxial.The hollow single screw extruder is characterized by further comprising a vibrator and a movement controller, a radial channel is formed in the hollow screw, the continuous inner threaded groove through in the whole length is formed in the inner wall of the central hole of the hollow screw, the vibrator is arranged on the mandrel, vibration of the vibrator is controlled by the movement controller, and the vibrator can drive the mandrel to vibrate or carry out movement in other modes.The hollow single screw extruder is simple in structure and high in heat efficiency, the plasticizing and extruding process is optimized, and the quality of extruded products is good.