Plastic pelletizer granulator operation precautions


The plastic pelletizer granulator should be shut down each time according to the appropriate operating procedures. If the plastic pelletizing machine is arbitrarily shut down. It will cause damage to the machinery and equipment itself while bringing unnecessary trouble to the next start pelletizing, then the plastic pelletizing machine shutdown needs to do what work?

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1. Plastic pelletizer granulator needs to be correlated according to the different characteristics of plastic processing before shutdown operations. Such as processing PVC plastic, must be added before the shutdown before the head material to facilitate the removal of plastic granulator screw and barrel in the residual PVC material. As it is not easy to extrude and melt, extrusion is not complete before the shutdown, and the barrel and die head are clogged, affecting the next start-up, when processing polyolefin plastics. Generally, shutting down the plastic pelletizer at full load is also done to prevent gas from entering the barrel. To prevent the vulcanization of plastic in the barrel, which affects the quality of crafts in remanufacturing.

2. Plastic pelletizer feeding pause. Discharge as much plastic as possible in the plastic granulator. Turn off the main and sub-barrel and head power for reuse.

3. To stop the plastic pelletizer machine, please turn off the power switch of the chassis first. Then turn off the power equipment inverter.

4. Turn off the main inverter and the main gate valve of the cooling circulating water.

5. If the downtime is long, it is necessary to remove the machine head, die head and filter unit. Remove the residual material and apply anti-rust oil.

6. For the plastic pelletizer machine with hydraulic die head, clean the die head and replace the mesh inside the die head in time after shutdown. In order to avoid residual waste plastics after cooling sieve blockage, many users do not clean up the material, which will lead to the next time the plastic pelletizer barrel exhaust hole “deflated”. This will not only damage the pelletizing equipment but also seriously affect the processing efficiency.

7. If the user uses a complete set of waste plastic crushing, cleaning, granulation production line, you need to turn off the crusher, washing pool, dryer, feeder and other auxiliary equipment in turn, to ensure that the equipment stops running and power off, and then turn off the plastic pelletizer equipment in turn.

8. Plastic pelletizer operation of the parking, the pelletizer will be squeezed out of the plastic, pelletizer operation to suspend feeding. Reveal the screw, close the barrel and head power, discontinue heating. Make the screw and the auxiliary machine stop operation. Turn off the power of the pelletizer and auxiliary machine.

9. Install the head. Organize the porous plate and the various parts of the head. To avoid damage to the inner surface of the head, 3 flips open the head coupling flange. The remaining material inside the head is tidied up using steel law and steel sheet, and then the plastic adhering to the head is ground away with sandpaper and beaten, and coated with machine oil or silicone oil to prevent rust. After removing the machine head, the screw and barrel finishing. Restart the main machine, add parking material to clean the screw and barrel, at this moment the screw chooses low speed to reduce wear. After the parking material is crushed into powder and extruded thoroughly, compressed air can be used to blow out the residual granules and powder from the filling port and exhaust port repeatedly until there is really no residual material in the barrel, then lower the screw speed to zero and discontinue the pelletizer, close the total power supply (the device that provides power to the electronic equipment) and the total cold water valve.

In addition to grasp the operation of the granulator control strategy, know the plastic granulator fault analysis, the cause of the attack and disposal is to extend the life of the granulator and the normal operation of the most important.

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