Three-screw Extruder Introduction:

The development of extruder has gone through a process from single-screw extruder to twin-screw extruder to today's triple-screw extruder. The emergence of twin-screw not only improves production efficiency, but also expands the scope of application of extruders; now the birth of triple-screw has further improved production efficiency, but also allowed extruders to enter more subdivided production fields, and produce more refined products. The twin-screw extruder has two screws with the barrel to form an extrusion system, while the three-screw extruder is assembled by three screws in the barrel. Although only one screw is added, the arrangement and combination of the three screws can be arranged in parallel, and can also be arranged in a right triangle or inverted triangle. The different arrangement of the screws directly affects the performance of the extruder. As a leader in the field of food production, our company's three screw extruder has excellent performance in the production of puffed snacks and pet food, and can improve product quality with high productivity.

Features of Three Screw Extruder:

1. High output and low energy consumption

The two screws of the twin-screw extruder form one meshing surface, while the three screws of the three-screw extruder form three meshing surfaces, that is, the meshing area of the screws of a three-screw extruder is equivalent to three sets of the same power twin-screw extruders’ screw meshing area, so the extrusion efficiency and shearing efficiency is high, and its output is twice that of the twin-screw extruder with the same power. To produce the same quantity of products, the cost of manpower, space, etc. is doubled reduced. And it saves energy because the power of the main motor, heating coil and other components is reduced.

2. The gearbox has a long life

Compared with the twin-screw extruder, the inside of the gearbox of the three-screw extruder adds a force point, the force area of the box increases, and the corresponding pressure decreases, thereby prolonging the life of the gearbox.

3. Self-cleaning function

The machine has an automatic cleaning function, and the waste in the barrel can be cleaned without disassembling the screw when the machine is stopped.

4.Internal mixing function and good dispersion and maturing effect

Three screws are arranged in a triangle, forming a closed space in the central part. As the screw rotates, the material moves continuously between the screw and the enclosed space. Between the screws, the material is strongly compressed and shifted, while the pressure applied to the material in the closed space is reduced, so the repeated pressing and releasing, combined with the high temperature generated by the extrusion, the material is evenly distributed and matured, so the final products are more refined.

5. Good exhaust performance

There is no material accumulation in the exhaust port of the machine, and there is no material leakage or blockage. The reason is that the material is almost sucked into the hermetic space in the center of the screw. The hermetic space here is equivalent to a melt pump, so it will not leak out. Therefore, the machine can achieve a high degree of vacuum and improve the quality of the product.

6.The frequency converter speed regulation technology

The extruder machine adopts advanced frequency converter speed regulation technology, which makes the equipment powerful, runs more smoothly and saves electricity.

7. Long life of screw

The screws are treated with alloy steel nitriding, the life of the screw is longer, and some equipment adopts the building block combination structure, which can be combined arbitrarily according to different needs.

8. Automatic lubrication system

Automatic lubrication system to ensure a longer life of the transmission part of the equipment.

Video of Three-screw Food Extruder Working: