The intermeshing co-rotating twin-screw extruder has the advantages of high transportation efficiency, strong dispersion and mixing ability, good self-cleaning function, uniform distribution of the material in the machine, and outstanding adaptability. It is widely used between different plastics, plastics and Blending modification between rubbers, blending of various additives with plastics, glass fiber, carbon fiber reinforced plastics, etc., are the first choice for continuous mixing equipment for polymer modification. Structural features of co-rotating twin-screw extruder The co-rotating twin-screw extruder is composed of a kneading system, a feeding system, a transmission system, a heating and cooling system, and a control system.
Kneading system: barrel, screw and head adapter (including perforated plate) Feeding system: hopper, feeder and feeder transmission device Transmission system: motor, reduction box and thrust bearing Heating and cooling system: inside the barrel Heating and liquid cooling channel control system: The functions of each part of the automatic control of the entire extruder are similar to that of a single screw extruder, but the structure is much messier than that of a single screw extruder.
The most obvious feature of the screw co-rotating twin-screw extruder with modular screw building block planning is that the screw and barrel are both designed with "building block" planning. The screw is composed of a number of elements set on the mandrel, such as threaded elements, kneading blocks, toothed mixing discs, retaining rings, etc.; the barrel is also composed of different barrel sections (fully enclosed, with exhaust ports, with feeding ports) .
According to specific materials, formulas and the functional requirements of the mixture to be prepared, through scientific combination, different types and different numbers of screw elements and barrel elements are combined in a certain order, and then the set mixing mission is completed efficiently. And after changing the screw and barrel combination sequence, the best use of different materials and formulas is completed, and the intention of one machine with multiple functions and one machine with multiple functions is achieved. In addition, another advantage of building block planning is that it can partially replace worn screw elements and barrel elements, avoiding the failure of the entire screw or barrel, and greatly reducing repair costs.
Combined barrels The barrels of modular planning can be connected by flanges or tie rods. Generally, small machines use tie rods. The barrel is generally embedded with a bimetallic bushing to improve the wear resistance of the inside and outside of the barrel. In order to complete the accurate temperature process, each barrel has its own heating/cooling plan, and then complete the best combination of cooling and heating functions.