This invention discloses a twin-screw extruder. The first screw element and the second screw element have the same structure. The first screw element includes a first main shaft, on which, in the conveying direction, a first upstream conveying component, a first mixing component, a first kneading component, a first pressurized kneading component, and a first downstream conveying component are sequentially fitted via splines. Similarly, the corresponding second main shaft has a second upstream conveying component, a second mixing component, a second kneading component, a second pressurized kneading component, and a second downstream conveying component fitted via splines in the conveying direction. The barrel is also provided with a venting window, and a venting box is fixed on the barrel. The venting box is provided with a venting connector connected to a negative pressure venting device. A cleaning device for cleaning the plastic adhering to the venting window is provided inside the venting box. This extruder can better shear and disperse the plastic raw materials, reduce the generation of impurities, and simultaneously facilitate the cleaning of adhering plastic during the venting process.
Country Code: CN
Application Number: CN202311628864.3
