I.Introduction of Twin Screw Extruder
Twin screw extruder in food processing is suitable for the production of various extruded foods, including snack food, textured vegetable protein, nutritional powder, biodegradable packaging materials, starch gelatinization, rice assembling (fortified rice, nutritional rice analog, instant rice), pet feed, aquatic feed, etc.
Twin screw food extruder has greater shear force and working temperature than single screw extruder, so they have better puffing capabilities and are suitable for small-humidity extrusion processes.
Its characteristics of twin screw food extruder are as follows:
- Suitable for various main material: corn, wheat, rice, millet, small adding ratio of starch, etc.
- Operation and maintenance are simple: The whole extruder is a modular structure, which performs feeding, extrusion, heating, cooling, forming, cutting, water injection and other processes respectively.
- High quality: Each module and detail has been strictly designed, with the greatest investment in the use of materials, carrying meticulous craftmanship in processing accuracy. Therefore, the interconnection and cooperation among all parts are tight and scientific, and the twin screw extruder overall operation is stable, accurate, high in efficiency and low in energy consumption.
II.Specification of Twin Screw Extruder for Food
| Model | Installed Power | Main Motor Power | Capacity | Dimension |
| Twin screw extruder SLG35-A | 12.5kw | 7.5kw | 10~30kg/h | 2500×700×1600mm |
| Twin screw extruder SLG65-C | 30.45kw | 22kw | 100~120kg/h | 2600×950×2000mm |
| Twin screw extruder SLG65-CJ | 41.45kw | 30kw | 100~160kg/h | 3060×950×2050mm |
| Twin screw extruder SLG75 | 72kw | 55kw | 250~300kg/h | 4800×3000×4200mm |
| Twin screw extruder SLG70-C | 56kw | 45kw | 200~250kg/h | 3320×960×2050mm |
| Twin screw extruder SLG70-A | 55kw | 45kw | 250~300kg/h | 4400×1300×2200mm |
| Twin screw extruder SLG85-A | 119kw | 90kw | 400~600kg/h | 5200×1300×2500mm |
| Twin screw extruder SLG115-A | 135-160kw (according to different foods) | 110-130kw | 800-2000kg/h
(according to different foods and design) |
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III.More Details of Twin Screw Extruder in Food Industry
Feeding Unit of Twin Screw Extruder
Function: To introduce materials into the extruder at a constant speed
Drive Unit of Twin Screw Extruder
This is composed big drive motor and heavy-duty gearbox to supply the continuous, stable and strong power to the twin screw.
Screw Unit of Twin Screw Extruder
Composed by twin screws.
Scientific screw diameter to length ratio.
Modular design to be easily assembled and detached.
High precise manufacturing of the screws
Barrel Unit of Twin Screw Extruder
High-precision coupling, firm and safe
Modular design, easy to replace for various formulations
High strength and anti-deformation material outside
lined with wear-resistant alloy material inside
With internal circulation channels in each zone for independent cooling
Heating Unit of Twin Screw Extruder
Sectional-heating design, uniform heat conduction, independent control
Cooling Unit of Twin Screw Extruder
Sectional-cooling design, uniform heat conduction, independent control
Intergrated with solenoid valves for each cooling section
Cutting Unit of Twin Screw Extruder
Detachable flange connection
Cut neatly
Modular design, easy to assemble and
Precise positioning
Automatic Lubricating Unit
Reduce energy consumption and prolong service life of gearbox
Intergrated design
Controlling Unit of Twin Screw Extruder
Semi automation:
Instrument controller for easily monitor and control the temperature, pressure, motors power & speed.
High level automation:
PLC control with friendly operation interface
Parameter records, production management, recipes, permissions, etc. , which can fully meet the high-standard manufacturing requirements and food policy;