Structure and performance of flat twin and conical twin screwAccording to the number of screw bai rods, it can be divided into single screw, du twin screw, triple screw, and multi screw. The twin screw can be divided into parallel twin screw dao and conical twin screw. Parallel and conical twin screw extruders The significant difference is the different geometry of the screw barrel, which leads to many differences in structure and performance. Although the two have different characteristics, they have their own advantages.
Conical twin screw
Conical twin screw extruder: Two conical screws are arranged horizontally, and the two axes are inserted into the barrel at an angle. The center distance of the two axes gradually increases from the small end to the large end, which makes the two output shafts of the transmission gear box have Larger center distance, the gears and gear shafts in these transmission systems, as well as the radial bearings and thrust bearings supporting these gear shafts, have a larger installation space, which can be equipped with larger specifications of radial bearings and thrust bearings, each The transmission shaft has a shaft diameter sufficient to transmit torque, so a large working torque and a large load-bearing capacity are a major feature of a conical twin-screw extruder. This parallel twin-screw extruder is unmatched.
Flat twin screw extruder: Due to the small size of the center distance between the two screws, in the transmission gear box, the space for the radial bearings and thrust bearings supporting the two output shafts and the related transmission gears is limited, although the designer’s fee I have tried my best, but I can't solve the bearing capacity, the modulus of the gear, the diameter is small, and the diameter of the tail of the two screws is small, resulting in poor torque resistance. The output torque is small and the load resistance is poor, which is the most significant defect of the parallel twin screw extruder. However, the plasticity of the length-diameter ratio is the advantage of the parallel twin screw. It can increase and decrease the length-diameter ratio to meet the requirements of plastic processing technology according to the difference in molding conditions. Twin screw extruders are difficult to do.If you want to know more about it please do not hesitate to contact me. WhatsApp:+86-15966835076.