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The composition parts of the extruder(1)


There are two types of feeding parts of the screw barrel of the extruder(screw barrel of the extruder), horizontal and vertical. They are equipped with a hopper to receive and temporarily store the raw materials to be extruded and transport them to the screw. In order to ensure smooth flow of raw materials and avoid "arching", the hopper is equipped with a mixer or a wide discharge port, which will help the mechanism to maintain an uninterrupted and uniform feeding condition. It is very important for the feeding mechanism to maintain uniform feeding. Because, in order to ensure that the extruder has proper function and homogeneous product condition, uninterrupted uniform feeding is an essential prerequisite for the normal operation of the extruder.

Screw barrel of the extruder
Generally speaking, the screw is the most important part of the extruder. It not only determines the ripening and gelatinization functional strength of the extruder, but also determines the quality of the final product. Different screws have different extrusion functions. The extrusion function of the screw depends on the design parameters of the screw. Various design parameters of screw.

Thread pitch(screw barrel of the extruder) is the distance between corresponding points on two adjacent thread profiles; When the thread rotates for one cycle, the distance that the thread line advances in the axial direction, measured as a multiple of the thread pitch, is called the number of forward screw grooves, or the number of thread heads. For the screw with single head thread, the pitch is equal to the pitch of the thread; For the screw with double thread, the thread pitch is equal to twice the thread pitch; For a screw with three head threads, the pitch is equal to three times the thread pitch. The screw with multiple threads can increase the transportation capacity and viscous flow. In the process of continuous mixing and transportation of materials by the screw, the screw will produce mechanical friction and heat, so that the materials will melt.