Heating and cooling device for plastic granulator
The plastic granulator usually uses electric heating, which is divided into resistance heating and induction heating. The heating sheet is installed in each part of the fuselage, machine neck and machine head. The heating device heats the plastic in the cylinder externally to heat up to the temperature required for the process operation.
The cooling device is set up to ensure that the plastic is in the temperature range required by the process. Specifically, it is to eliminate the excess heat generated by the shear friction of the built-in screw rotation of the plastic granulator, so as to avoid the plastic decomposition, scorch or difficulty in shaping due to excessive temperature. There are two types of barrel cooling: water cooling and air cooling. Generally, air cooling is more suitable for small and medium-sized plastic granulators, while large plastic granulators usually use water cooling or a combination of two forms of cooling; screw cooling mainly uses central water cooling. The purpose is to Increase the material solid conveying rate, stabilize the glue output, and improve product quality at the same time; but the cooling at the hopper is to strengthen the conveying effect on solid materials and prevent the plastic particles from becoming sticky and blocking the feed port due to temperature rise. The second is to ensure the transmission Part works fine.
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