Heating-and-melting unit is served with one operator.
Principle of operation.
Heating-and-melting unit is controlled by the control cabinet. The screw is rotated by means of drive unit. Prepared uniformly pre-mixed mixture of the polymeric components is supplied in the preheated working chamber of the heating-and-melting unit through the receiving hopper and pushed by the screw deeply into the working chamber. The screw rotates and provides stirring of the composite mixture and its motion within the working chamber with passing through three heating zones. Within the first heating zone the mixture is heated and dried (residual moisture is removed), within the second (medium) zone the polymers are plasticized and thereby a homogeneous composite mixture is obtained, within the third zone the mixture temperature is maintained and therefore its consistency required for its subsequent molding. Ready mixture is moved by the screw to the outlet located in the output (front) housing flange. This opening is closed with gate valve, which is opened by moving the handle upwards. To lock in the closed position press on the handle downward until it stops.
Structural features of heating-and-melting unit
There are two pipes in the degassing zone, which are used to remove and discharge vapors and gases during the process of heating the material. The pipe caps have nipples for connection of flexible hose, so the gases can be removed without getting into the room.Construction of APN1-200M1 is unified with the APN-300 to the maximum degree.
|Nominal power of screw motor||15||kW|
|Rated power consumption of heating-and-melting unit, maximum||40||kW|
|Number of heating elements||5||ea|
|Nominal power consumption of heating elements, maximum||25||kW|
|Total actual power consumption of electric motor (when entering the continuous working mode), maximum||10.5||kW|
|Total actual power consumption of heating elements (when entering the continuous working mode), maximum||17.5||kW|
|Screw motor nominal shaft speed||1000||rpm|
|Screw nominal speed at minimal motor speed equal to 14 Hz (when motor shaft speed equals 280 rpm)||3.8||rpm|
|Screw nominal speed at maximum motor speed equal to 50 Hz (when motor shaft speed equals 1000 rpm)||13.5||rpm|
|Capacity (output of the finished product), maximum||400||kg/h|
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