A kind of separation and recycling granulator of waste plastic output by screwing

Abstract

The invention discloses a separation and recovery granulator for waste plastics output by screwing. The recovery and granulation device combines the horizontal extrusion structure with the defoaming device. When the molten plastic flows from the right side to the left end of the conveying pipe under the action of the extrusion screw, the defoaming device can effectively discharge the air bubbles in the plastic through vibration. , prevent the plastic strips with air bubbles from being torn off when they are drawn to the pelletizer, and improve the production efficiency of plastic pellets; at the same time, the strength of the plastic strips can be enhanced by twisting, and in the process of pulling the plastic strips to the pelletizer, The plastic strip vibrates up and down and creates sliding friction with the upper and lower inner walls of the die hole, which avoids abrasion on the surface of the plastic strip and improves the quality of the plastic pellets.

Description

technical field [0001] The invention relates to the field of equipment for producing plastic granules, in particular to a granulator for separating and recycling waste plastics output by screwing. Background technique [0002] With the development of industry, the application of plastic products has spread all over the fields of industry, agriculture and daily life. The waste plastic products processed every day in the world are immeasurable, which puts great pressure on the environment. The most common way to recycle waste plastics is Recycling and granulation, but the current technical considerations are not perfect, and it has the following disadvantages: the traditional process is to wash the recycled plastic, dry it, then heat it with a plastic recycling granulator, and then send it to the screw extrusion equipment for plasticization, extrusion into plastic strips and finally cut into granules; [0003] 1. After the plastic is heated and melted, it expands, and the hea...

AI Technical Summary

Problems solved by technology

[0002] With the development of industry, the application of plastic products has spread all over the fields of industry, agriculture and daily life. The waste plastic products processed every day in the world are immeasurable, which puts a lot of pressure on the environment. The most common way to recycle waste plastics is Recycling and granulation, but the current technical considerations are not perfect enough, and it has the following disadvantages: the traditional process is to wash the recycled plastic, dry it, and then use a plastic recycling granulator to heat and melt it and then send it to the screw extrusion equipment for plasticization and extrusion. into plastic strips and finally cut into granules;

[0003] 1. After the plastic is heated and melted, it expands, and the heated plastic shrinks when it reaches the die hole of the extrusion mold. Therefore, when the plastic is cooled and solidified, it is easy to generate air bubbles to form pores of different sizes on the plastic part, reducing the extrusion rate. The density of plastic strips causes them to be often torn off when they are pulled to the pelletizer, reducing the production efficiency of plastic pellets;

[0004] 2. When the plastic strip is pulled from the die hole of the plastic extrusion mold to the pelletizer, the plastic strip shakes up and down, so that the plastic strip and the upper and lower inner walls of the die hole have static friction, resulting in wear lines on the surface of the plastic strip, reducing the Flatness of the surface of plastic pellets

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