The energy saving of the extruder can be divided into two parts: one is the power part and the other is the heating part.
Energy saving in the power part: Most of the inverters are used. The energy saving method is to save the residual energy of the motor. For example, the actual power of the motor is 50Hz, and you actually only need 30Hz in production to be sufficient for production, and the excess energy consumption is in vain If it is wasted, the inverter is to change the power output of the motor to achieve the effect of energy saving.
Energy saving in heating part: Most of the energy saving in heating part is the use of electromagnetic heaters, and the energy saving rate is about 30%~70% of the old resistance coil.
work process
The plastic material enters the extruder from the hopper, and is conveyed forward by the rotation of the screw. During the forward movement of the material, it is heated by the barrel, shear and compression caused by the screw to melt the material. , Thus realizing the change between the three states of glass state, high elastic state and viscous flow state.
In the case of pressurization, the material in the viscous flow state is passed through a die with a certain shape, and then becomes a continuum with a cross-section similar to the die according to the die. Then it is cooled and shaped to form a glassy state, thereby obtaining the workpiece to be processed.