The charging device of an extruder

The feeding material is mostly granular material, but ribbon material or powder material can also be used. The charging equipment usually uses a conical feeding hopper, whose volume is required to provide at least one hour's consumption. The bottom of the hopper is provided with a truncation device to adjust and cut off the material flow, and the side of the hopper is provided with a viewing hole and a calibration measuring device. Some hoppers may also have a decompression or heating device that prevents the material from absorbing water from the air, or some drums may have their own agitator for automatic feeding or filling.

The driving part of an extruder

The transmission part is usually composed of motor, reducer and bearing. In the process of extrusion, the screw speed must be stable, can not change with the screw load, so as to maintain the quality of the product uniform. But in different occasions to require the screw can change speed, in order to achieve a device can extrude different plastics or different products. Therefore, this part of the general use of AC commutator motor, DC motor and other devices, in order to achieve a continuously variable speed, the general screw speed is 10~100 RPM.

Extruder energy saving

Power part energy saving: Most of them use frequency converter, which saves the residual energy of the motor. For example, the actual power of the motor is 50Hz, but you only need 30Hz in production, so the excess energy consumption will be wasted. Frequency converter is to change the power output of the motor to achieve the effect of energy saving.

Principle of single screw extruder

Single screw is generally divided into three sections on the effective length. The effective length of the three sections is determined according to the diameter of the screw, the pitch of the screw and the depth of the screw.