Різні моделі кормового екструдера

The extrusion puffing machine is mainly composed of a barrel and a screw that rotates and puffs in the barrel. There are two types of extrusion puffing machines: single-screw extrusion puffing machines and twin-screw extrusion puffing machines. During the extrusion process, the material enters the die cavity from the feed port and is pushed forward by the screw, where it is extruded, mixed, compressed and sheared. Due to the driving force, friction, shear force and external heating, the material is heated by pressure, reaches a high temperature and high pressure state, and matures into a modified paste. When the material is extruded from the front die hole, the temperature and pressure suddenly drop to normal temperature and pressure, causing the water in the material to vaporize and evaporate rapidly, and the volume expands rapidly to become a puffed material.