Extruding Assembly on Twin Screw Extruder

The extruding assembly is a key part of the extruder and mainly composed of an expanding chamber and an extruding screw. Classified based on its function, the whole extruding assembly is mainly composed of a feeding section, a kneading section and a final ripening section. But there is no strict limit between all the sections and they are designated according to their main functions.

A sectional integrated structure is applied for the feed extruder chamber and the cross section of inner hole likes the shape of "8". Each sect ion of chamber body has an individual external jacket chamber, which can be used for heating or cooling of the chamber body. In addition, there is a temperature sensor and the chamber is equipped with a pressure transmitter for detecting the working pressure in the expanding chamber. The first section chamber, the middle section chamber and the discharge chamber are equipped with water-steam valve. If it is necessary to add water during production, the water can be injected from the water-steam valve in the first section chamber; if it is necessary to add steam during production, the steam can be injected from the water-steam valves in the middle section chamber.

The extruding machine screw is a sectional assembly with hollow screw and positioned to the main shaft with integral key, and screw combination can be done based on material varieties and formula because the structural screw is universal and exchangeable.