Daily Maintenance of Twin-screw Extruder

The twin-screw feed extruder is mainly composed of a barrel and a rotating extrusion twin-screw in the barrel. When the equipment is running, the material enters the material cavity through the feeding port, and the screw rotates and squeezes forward to be transported. Under the action of thrust, friction, shear force and heat, a high pressure and high temperature difference is formed inside and outside the cavity. The moment the material is extruded, Instant expansion due to pressure difference. After the equipment has been shut down for a long time for cleaning and the main power supply is turned off, pull out the screw inside the cavity for cleaning. Regularly clean the remaining materials on the surface of the equipment. Pay attention to check the stability of the equipment's fastening bolts and nut packaging equipment.

Before starting the machine, you need to check the oil quantity and quality in the box. It is usually filled before leaving the factory, but you need to choose the appropriate lubricating oil according to the climate in different places. During daily maintenance, it is necessary to check various components regularly, and change or refill oil promptly as needed: various bearing parts, motors, differential modulator front gears, feeding reduction motors, extruders, etc. Turn off the main power, check and clean the conditions in the entire expansion chamber: gear wear, spindle coupling transmission mechanism wear and alignment, spiral surface materials, etc., replace wearing parts in time, and clean residual materials to avoid agglomeration and mildew. changes or cross-contamination between materials.

The electrical system needs to be equipped with the most basic protection devices: grounding protection, thermal relay protection, insulation protection, and be maintained by professionals. Regular inspection and cleaning of dust in the operation box and control cabinet, timely inspection of frequency converters, electrical fasteners, etc. After tripping protection occurs, you need to troubleshoot the problem before starting.