Components and functions of the screen changer

What is a screen changer? A screen changer, in short a device for filtering impurities in the melt, is widely used in extrusion and polymerization lines. Depending on the structure of the screen changer, you can choose between non-stop screen changer and short-stop screen changer, and the mainstream product in the market today is the non-stop screen changer.

First, the structure of the screen changer for plastic recycling

1, the main body: usually made of high-strength, high-temperature, corrosion-resistant materials, able to withstand high temperatures, high pressure and other working conditions.

2, screen: woven by the wire or other high temperature materials, can intercept the impurities in the melt. According to the production needs, can be replaced with different mesh screen.

3、Driving device: It is used to control the movement of the screen automatically or manually to realize the operation of replacing the screen.

4、Control system: It is used to realize the screen changing operation by controlling the driving device, and at the same time monitor the import and export pressure and temperature.

Second, the role of the extrusion screen changer

1、Filtering function: filtering the aging or deterioration of granular materials generated in the production process, the low-precision level of particles in the recycled materials, all kinds of non-plastic materials in the recycled materials and the characteristics of non-integration of plastics and so on.

2、Quality Assurance: The same screen changer can be installed with different precision level filters (high and low mesh) according to the process requirements, so as to meet the requirements of the product process level.

3、Improve efficiency: In the process of screen changer can be realized without stopping to replace the screen, not only to ensure the stability of product quality, production continuity, but also to save costs and increase efficiency.

4, additional features: the material through the screen will produce a certain pressure rise, and then through the support of the porous plate of small holes in the shunt effect on the plasticization of the material and mixing uniformity has a certain effect.

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