How To Improve The Efficiency Of Plastic Granulator?
As the production process of the twin-screw extruder becomes more advanced, it not only needs to perform tasks such as feeding and plasticizing, but also needs to perform dehydration and drying technologies in order to meet the different needs of users. Therefore, the twin-screw extruder must continuously improve its work efficiency and find ways to improve the quality of the products it produces. So, what should we do? COLOWE will give you a brief explanation below.
How to improve the work efficiency of the twin-screw extruder:
Improving work efficiency is one of the most important goals in the development and design of the new co-rotating twin-screw extruder. It can be achieved by increasing the screw speed, improving the plasticizing and mixing level, etc. At the same screw speed, increasing the depth of the screw grooves can greatly increase the conveying capacity. On the other hand, the plasticizing and mixing level of the screw also needs to be increased accordingly, which requires the screw to be able to withstand higher torque. At high screw speeds, the time that the material stays in the extruder is shortened, which may cause the material to be plasticized and melted insufficiently. Therefore, it is necessary to appropriately increase the length of the screw, which will inevitably cause the twin-screw extruder to actually bear an increase in torque and power.
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Increasing the free volume of the screw grooves is also an important factor. In the feeding and devolatilization sections, it is necessary to have large free volumes for the threaded elements. For loose-density materials, increasing the free volume in the feeding section and the degree of filling of the material in the thread grooves can greatly improve the processing capacity of the extruder.
To increase the torque and speed, careful design of the reduction and distribution gearbox is required. To achieve a significant increase in the torque index of the equipment, it will inevitably require a higher level of design and manufacturing of the transmission box.
The higher the torque, the higher the design, manufacturing precision, material strength and heat treatment requirements for gears, output shafts, bearings, etc. parts, as well as the design and manufacturing precision requirements for the screw core shaft, threaded elements and kneading disc parts.
Because the free volume of the threaded elements needs to be increased, the center distance between the two screws will decrease when the outer diameter of the screw remains unchanged. This will make the problem of the limited installation space for the mixing gears and thrust bearings even more prominent.
