Two Stage Extruder
ZL series, that’s two stage compounding extruder consisted of two
parts. Mainly there are three types of two stage extruder
combination:
1.Single screw main extruder machine-single screw submachine
2.Single screw main pelletizing machine-twin screw submachine
3.Twin screw main pelletizing machine-single screw submachine
The first two types are widely used for recycled plastic
granulating.
And the third type for heat-sensitive material like PVC, POM, XLPE
etc.
The twin screw extruder (SJSL-) at the first stage is to realize
good shearing and compounding for material, and then the extrusion
and pelletizing by YD single screw extruder (second stage). The
new, scientific and advanced design and structure can avoid
material decomposition caused by material overheating
Application of Twin-Single Screw Extruder
Carbon black master batch
PVC cable, PVC transparent bottle and blood transfusion tube
materials
PE silicon hydride crosslink cable material, peroxide crosslink
cable material
Wood- plastic blending material
Heat-sensitive polymeride
Quick details of machine
Model:ZL75-180
Motor:132kw for sjsl75 twin screw extruder main machine, 90kw for
YD180 single screw extruder sub machine
Output:500-600kg/hour
L/D: 36:1 for twin screw main machine, 7:1 for single screw sub
mahine
Speed governing: Inverter control speed;
Revolutions: 0-500rpm;
Reduction :
Reduction ratio: i = 3:1;
Transmission gear: Parallel tri-axial structure is combination of
reduction and matrix.
The gear is made of high quality alloy (20CrNi2Mo). It had been treated
by cementation heat process, the precision grade can reach 6th. It
guarantee the tooth surface is high speed, overloading, low noise
and high
torque.
Drive bearing: The brand of axletree: Japanese NSK.
Lubrication: Gear bearings in the gear box will be of oil immersed. There
is hydraulic lubrication in the gear engagement and gear bearings.
Cooling: Lubricated cooling adopts shell and tube cooler and
circulated
water cooling method.
Various model of our two stage extruder
| Model type | Screw Diameter (mm) | Screw L/D | screw speed n(r/min) | Main motor power(Kw) | Typical production capacity (kg/h) |
| ZL51-100 | SJSL51 | 50.5 | 20-48 | 500-600 | 37/45 | 150-300 |
| YD100 | 100 | 7-15 | 65-85 | 37 |
| ZL60-120 | SJSL60 | 59.5 | 20-44 | 400 | 37/45 | 200-350 |
| YD120 | 120 | 7-15 | 65-90 | 37 |
| ZL65-150 | SJSL65 | 62.4 | 20-48 | 400-600 | 55/75 | 250-450 |
| YD150 | 150 | 7-15 | 65-85 | 37/45 |
| ZL75-180 | SJSL75 | 71 | 20-44 | 400-600 | 75/90 | 400-650 |
| YD180 | 180 | 7-15 | 65-90 | 45/55 |
| ZL95-200 | SJSL95 | 94 | 20-44 | 400-600 | 220/280 | 700-15000 |
| YD200 | 200 | 7-15 | 65-85 | 75/90 |
Photo of two stage extruder
