Extruder mainly consists of a barrel and in the expansion of the barrel of the screw and other components of the rotating expansion, single-screw extruder and twin-screw extruder two categories. In the extrusion process, the material from the feed port into the die cavity, driven by the screw forward conveyance, subject to extrusion, mixing, compression and shear. As a result of propulsion, friction and shear and the role of external heating, the material is pressurized and heated to reach a high temperature, high pressure state, ripening into a modified paste. When the material from the front of the die hole extrusion, due to the temperature and pressure suddenly dropped to room temperature, normal pressure state, resulting in rapid vaporization and evaporation of moisture in the material, the volume of rapid expansion, become puffed.

The screw of single-screw extruder is composed of a shaft connecting the screw units of various structures. The whole screw consists of three sections: feeding section, kneading section and melting and homogenizing section. After the material enters the barrel from the feeding port, it undergoes solid transportation, melting and homogenization process in the screw, so that the material is transformed from a loose state to a continuous plastic dough. In the single-screw extrusion chamber, the material is basically closely around the screw, a spiral continuous band, the screw rotates the material along the spiral like a nut to move forward, but when the friction between the material and the screw is greater than the friction between the material and the barrel, the material will be co-turned with the screw, which can not be realized on the material forward extrusion and conveying effect.

Twin-screw extrusion puffer is a kind of multi-screw extrusion puffer, which is developed on the basis of single-screw extrusion puffer, in the barrel of twin-screw extrusion puffer, two screws are placed side by side, so it is called twin-screw extrusion puffer. According to the relative position of the screw can be divided into engaged and non-engaged type, engaged type can be divided into partially engaged and fully engaged type, reverse rotation twin-screw extrusion extruder is generally used two screws of exactly the same size, but the opposite direction of the thread. The difference between inward and outward rotation lies in the different location of the pressure zone, the pressure generated by the inward rotation of the twin-screw for the upper high and lower low, the material through the twin-screw, the inlet will produce extremely high pressure, resulting in feeding difficulties, this inward reverse rotation is rarely used; the pressure generated by the outward rotation of the twin-screw for the upper low and high, which is conducive to the feeding of the material.

1. Animal husbandry and breeding industry.
2. Animal manure organic fertilizer granulation, tea Chinese medicine slag granulation, compound fertilizer granulation, and sawdust granulation.
3. Industry: industrial granulation and granulation of coal ash, aluminum powder, gypsum powder, calcium powder, etc.
4. It can be

인기 탭: , 내구성있는 생선 펠릿 생산 기계, 신뢰할 수있는 생선 펠렛 생산 기계, 내구성이있는 양식업 사료 제조 장비, 새로운 생선 펠렛 압출기, 내구성있는 물고기 사료 제조 장비, 새로운 양식 사료 생산 기계