What are the design parameters of the twin-screw extruder?
1. Partial parameters of twin-screw extruder
1. Screw diameter: refers to the outer diameter of the screw, in mm. For variable diameter or conical twin-screw, this is a variable value, which end diameter should be indicated. The screw diameter of the twin-screw extruder is 28~340mm. The larger the diameter, the larger the extrusion capacity of the equipment.
2. Screw aspect ratio: refers to the ratio of the effective length of the screw to the outer diameter of the screw. For the integral twin-screw, the aspect ratio is fixed, generally 7~18; for the combined twin-screw, the aspect ratio is variable, and some can even reach 36:1.
3. Screw steering: divided into co-rotation and counter-rotation. The co-rotating twin-screw extruder is mostly used for mixing materials, and the counter-rotating twin-screw extruder is mostly used for extruding products.
4. Driving power: refers to the power of the motor driving the screw, in kW.
2. Parameters of the bearing part of the twin-screw machine
1. The torque of the screw: the torque load of the twin-screw extruder is relatively large. In order to characterize its load-bearing ability to protect the safe operation of the extruder, generally the maximum torsion that the screw can withstand cannot be exceeded in its specification parameters. The unit is kg/m.
2. The bearing capacity of the thrust bearing: The thrust bearing is an important component in the twin-screw extruder, and this indicator is given in the general product specifications.
3. Range of screw revolutions: nmin~nmax, where nmin is the lowest revolution and nmax is the highest revolution.
4. Heating power and number of heating segments: the unit of heating power is kW.
5. Output: the unit is kg/h.
The above is the detailed introduction of TENGDA Plastic Extruder Machine Manufacturers to the parameters of the twin-screw extruder. Whether it is a single-screw or a twin-screw, the design of the extruder is very good, and it can be a delicate work. Hope the above content is helpful to you.
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