How to achieve high performance of the same direction twin screw extruder?

The high performance of the same direction twin screw extruder can be achieved through the following aspects:

1. Improve production efficiency

· Increase the screw speed: Increasing the screw speed can increase the conveying capacity of the material, but at the same time, it is necessary to enhance the plasticizing and mixing capacity to avoid insufficient plasticizing and melting of the material.

· Increasing the depth of the screw groove: Increasing the depth of the screw groove can increase the throughput, but it needs to increase the plasticizing and mixing capacity of the screw correspondingly, and withstand greater torque.

· Increase the length of the screw: appropriately increasing the length of the screw can increase the residence time of the material in the extruder to ensure that the material is plasticized and fused adequately.

· Increase the free volume of the spiral groove: Increase the free volume of the spiral groove in the feeding section and the deswinging section, which can improve the processing capacity of the extruder.

2. Improve product quality

· Optimize the design of plasticizing system: design the screw and barrel into a modular combination structure, and partition according to the functions of each section, such as the feeding section, the plasticizing section, the mixing section, the exhaust section and the extrusion section.

· Determine the geometric parameters of the screw elements: obtain the theoretical end curve of the screw according to the trajectory of the two screws, make use of the three-dimensional solid modeling function of large-scale computer aided design software, prepare the geometric modeling program of the twin screws, realize the three-dimensional solid graphic display of the twin screws, obtain the geometric parameters of various types of self-cleaning screw elements, and check the meshing of the two screws.

3. Equipment renovation and maintenance

· Use thermal gaskets: Add thermal gaskets between the flange of the feeding section and the second section to reduce heat loss and maintain sufficient temperature of the second section cylinder.

· Use high-pressure cooling system: Cool the extruder system. Change to a high-pressure cooling system to increase the conveying pressure, so that turbulence in the cooling hole, improve the efficiency of heat transfer.

· Equipment maintenance: regularly wash the cooling channel with acid to prevent scale attachment affecting heat transfer efficiency; Use synthetic gear oil to protect gears; Clean the machine frequently to remove residual material from the extruder and die.

Through the above measures, the high performance of the same direction twin-screw extruder can be achieved, and the production efficiency and product quality can be improved.