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How should the co-rotating parallel twin-screw extruder be cleaned?

by:TENGDA     2022-09-27

The co-rotating parallel twin-screw extruder is composed of several parts such as a transmission device, a feeding device, a barrel and a screw, and the functions of each part are similar to that of a single-screw granulator. So how should the co-rotating parallel twin-screw extruder be cleaned?

1. First heat the barrel to the molding temperature of the residual material in the barrel;

2. Remove the set screws on the heads of the two screws, pay attention to the left-hand screws, use a special tool for screw removal, slowly pull out the two screws simultaneously, and use a copper wire brush or copper shovel to keep the material on the surface of the screw hot. to clear quickly;

3. Turn off the power and remove the pressure measuring, temperature measuring elements and heaters on the machine head;

4. Pull out all the screws, lay them flat on the wooden board, remove the screw removal tool, remove and clean the screw components while hot, if the material penetrates into the screw mandrel and makes it difficult to disassemble the screw components, you can use a wooden hammer or a copper rod around the screw components. Tap lightly to loosen and then remove the component. If it is still difficult to take out, it must be put into the barrel again for heating, and the material can be unloaded while it is still hot after the material is melted.

5. Loosen the two-sleeve coupling, observe and remember the splines and marks at the tail of the two screws according to the type of the set screw at the end of the screw shaft;

6. After heating up to the molding temperature, remove the machine head while it is hot, and clean the material at the end of the barrel hole and the end of the screw;


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