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What is a twin-screw granulator? What is the working principle?

by:TENGDA     2022-12-14
Maybe many people don't know much about what a granulator is, and we can't touch it in our daily life. In fact, the so-called granulator is a machine that makes raw materials according to a certain shape, and has a wide range of applications in the field of industrial production. It has a wide variety and has different designs to meet the production requirements of different products. Let me tell you what a twin-screw granulator is and how it works.









1. What is a twin-screw granulator?



1. The twin-screw granulator is mainly used for the filling, blending, modification, addition, chlorination, processing of polypropylene and superabsorbent resins of rubber and plastics and engineering resins, degradable masterbatch, polyamide polycondensation, polyurethane Extrusion of fat addition polymerization, granulation of carbon powder and magnetic powder, production of insulating materials for cables, low-smoke, halogen-free, flame-retardant PVC cable materials and various silane cross-linking materials, etc.



2. The barrel and screw of the parallel twin-screw granulator are designed according to the principle of building blocks, and can be combined according to needs. It adopts electric heating and water cooling to automatically control the barrel temperature, and is equipped with forced feeding, vacuum exhaust and non-stop screen changing devices.



3. Twin-screw adopts frequency conversion speed regulation, AC motor drive or DC speed regulation, DC motor drive. The deceleration and twin-screw drive are in the same box, with compact dimensions. The safety coupling equipped with shear pins can protect the screw and transmission box from being damaged due to overload.



2. Working principle



1. The material passes through the feed port, and under the action of the rotating screw, it is kneaded into a ball and rolls forward along the screw groove. Due to the shearing, compression and stirring of the screw, the material is further mixed and plasticized.



2. The temperature and pressure are gradually increased, showing a viscous flow state, and passing through the machine head at a certain pressure and temperature, and finally the product with the desired shape is obtained.









The above is my introduction to the twin-screw granulator you introduced. Hope it helps you.
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