A multifunctional adjustable twin-screw extruder

Abstract

The invention relates to a multifunctional adjustable twin-screw extruder unit, which includes a mixing feeding system, a metering feeding system, a twin-screw extruding unit, an auxiliary machine production line and a finished product delivery system; the mixing feeding system and the metering feeding system They are respectively connected with the twin-screw extruder unit, and the auxiliary production line includes a water-stretched granulation auxiliary machine production line, a water ring granulation auxiliary machine production line, and an underwater granulation auxiliary machine production line. The invention provides a multifunctional adjustable twin-screw extruder unit. The complete set of equipment is equipped with multiple sets of granulation auxiliary machine production lines, equipped with a variety of feeders, the length-to-diameter ratio of the barrel is adjustable, and the mixing and feeding methods are The advantages.

Description

technical field [0001] The invention relates to a multifunctional adjustable twin-screw extruder unit. Background technique [0002] Co-rotating parallel twin-screw extruders are widely used in the mixing and extrusion of engineering plastics, modified plastics, wood-plastic materials, elastomer materials, high-filling masterbatches, color masterbatches, degradable materials, packaging materials, telecommunication cables, etc. out and granulate. Due to the different production process requirements of various materials, there are also great differences in the configuration requirements of twin-screw extruders. At the same time, the melt characteristics of various materials are also very different, resulting in differences in granulation methods, which require different granulation auxiliary production lines. [0003] At present, the single unit used for production and experiment mainly has the following problems: [0004] 1. The length-to-diameter ratio requirements of the...

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Problems solved by technology

[0004] 1. The length-to-diameter ratio requirements of the screw and barrel are also different for the production of different materials. Conventional twin-screw extruders are difficult to adapt to the mixing and granulation of various materials.

[0005] 2. Some materials need to be mixed with a high-speed mixer to achieve the adsorption of liquids or surface treatment of powders; while some raw materials have high requirements for the accuracy of the addition ratio, and need to be added separately with a weight loss scale; therefore, a set of raw material supply system Can not meet the needs of a variety of raw materials

[0006] 3. The different proportions of powder and pellets of different materials lead to different feeding methods and sequences. Some powders (such as carbon black, etc.) need to be fed from the 3-4-section barrel downstream of the main feeding port by a side feeder. Some liquid additives need to be injected into and mixed with the melt at the back of the barrel

[0007] 4. The granulation method, the melt characteristics of different materials are different, it is difficult to adapt to a single granulation method, and the production capacity is reduced or even cannot be produced normally.

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