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Conical Twin Screw Extruder

PVC Panel Extruding Machinery, Wall Panel Forming Machine, Industrial Plastic Extruder, Plastic Sheet Extruder

Z-SJSZ Series Conical Twin Screw Extruder
Z-SJZS series conical twin screw extruder is a kind of highly efficient equipment for extrusion of heat-sensitive materials like PVC powder. High-speed extrusion of PP/PE tubes can also be realized by changing the barrel screw. The plastic extruder is distinguished for low cutting rate, uniform plasticizing and mixing result, high output, stable quality, wide application, and long service life. For the main motor, SCR speed regulator or variable-frequency stepless speed controller is optional. The motor features a stable output torque. In the extrusion process, the materials are not easy to get decomposed, and PVC powder can get formed directly.

With the matching molds and auxiliary parts equipped, the plastic extruding machinery is competent in directly extruding thermoplastic materials especially UPVC into plastic tubes, plates, sheets, bars, films, and profiles. The modification and pelletizing process of various plastic can also be finished with Z-SJZS series conical twin screw extruder.

Technical Parameters
Model Z- SJSZ45/100 Z- SJSZ51/105 Z- SJSZ55/120 Z- SJSZ65/132 Z- SJSZ80/156 Z- SJSZ92/188
Motor power (kw) 15 18.5 22 37 55 110
Screw diameter (mm) ∮45/ ∮ 100 ∮51/ ∮ 105 ∮55/ ∮ 120 ∮65/ ∮ 132 ∮80/ ∮ 156 ∮92/ ∮ 188
Quantity of screws 2
Screw rotating speed (r/min) 36 36 36 36 36 36
Screw torque (NT) 3148 6000 7000 10000 14000 32000
Extruded volume (kg/h) PVC 90 40-140 40-180 50-250 100-400 200-750
Central height (mm) 1000 1000 1000 1000 1000 1100
Main Parts of the Conical Twin-Screw Extruder

1. Temperature control system
The temperature controller introduced from trustworthy brands guarantees that the temperature deviates by no more than ±1℃. Users can choose to use computer control or conventional control system.

2. Barrel and Screw
To realize an optimal plasticizing result, Zeqi prepares the most appropriate screws basing on clients' material formula. All of the screws are processed with high-precision CNC screw milling machine to ensure their consistency in performance. The adoption of variable depth/pitch screw design allows the materials to be cut and compressed more gently in the screw.
a. Screw
Materials: alloy steel 38CrMoAlA, with high-temperature nitriding treatment;
Depth of nitride layer: 0.5-0.7mm;
Hardness: HV740~940;
Special treatment: bimetallic treatment is adopted to extend the screw life
b. Barrel
Materials: alloy steel 38CrMoAlA, with high-temperature nitriding treatment;
Depth of nitride layer: 0.6-0.7mm;
Hardness: ≥ HV940;
Special treatment: bimetallic treatment is employed for the extruded part to extend the service life of barrel

3. Gearbox
This gear box of the plastic extrusion equipment is of aesthetic exterior, low noise, and stable performance. The gears are made from 20CrMoTi. Bevel and spur gear surface are used together for gearbox. The gear is given carburizing treatment, featuring long life, low noise and little heat production.

The main motor is connected with the horizontal gearbox by coupling.
Distribution box: the thrust bearings are intentionally enlarged with a unique distribution design; they feature long life and can bear large extrusion pressure

4. Electronic Control System
The conical twin-screw plastic extruder is equipped with advanced electrical control and AC/DC stepless speed regulation system. All of the circuit layout and arrangement is conducted in accordance with CE- MD: 2006/42EC+LVD: 2006/95/EC standards. Zeqi has established long-term partnerships with many well-known electrical component suppliers, like Siemens, ABB, Omron, Schneider, Chint, West Germany, Senlan, and so on, to ensure the life and security of our plastic extruder

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