Macaroni Processing Line's repair is based on the wear and
tear of certain parts found during equipment maintenance, and is determined by
the equipment technicians. There is a planned replacement of certain parts to
ensure that the equipment can work properly. Equipment maintenance work can be
divided into scheduled normal maintenance and maintenance of sudden
accidents.
Macaroni Processing Line
1. Normal maintenance will be arranged by the production
survey meeting, giving time for equipment maintenance. Normally, repair work is
performed simultaneously with regular maintenance of the equipment. Maintenance
work items of the extruder: ① Replace worn gears, pulleys, rolling bearings and
V-belts; ② Grind and trim the scratches and burrs on the working surface of the
barrel and screw to achieve smooth, non-sticky materials; ③ Check the heating
resistance Replace the damaged cast aluminum heating jacket; ④ If the gap
between the screw and the barrel device is too far apart, the equipment the technician decides to repair the screw and barrel by repairing the welding or
replacing the screw; ⑤ The bearing glands are re-installed Replace the
gasket.
2. Sudden accident maintenance This sudden accident maintenance is an
unplanned emergency. In the normal operation of the extruder, due to metal
foreign matter falling into the barrel, or because the barrel temperature is low
and the temperature instrument fails, plasticizing the material is not good, and
the screw rotation torque suddenly increases, causing the screw, gear or The
working load of the thrust bearing is severely overloaded and damaged. Another
possibility is that the motor is overloaded and burned for a long time. In order
to ensure the completion of the monthly production plan, for such sudden
equipment accidents, we must pay close attention to time, day and night, and
repair the damaged parts. Preparations before maintenance ① Consult the
equipment drawings to understand the parts, accuracy requirements and working
conditions of the repair parts; ② Know the quality standards of the repair parts
and determine the repair plan; ③ Check the specifications and accuracy of the
replacement parts according to the part drawings Quality; ④ Prepare testing
instruments and disassembly and assembly tools.
As a Macaroni Processing Line Manufacturer, I would like to
share with you the four reasons for the noise of the extruder screw barrel.
During the process of extrusion processing, the screw of the extruder will
make a sound when it rubs against the inner wall of the barrel. The reason for
this friction phenomenon is the following four reasons:
1. The assembly gap between the extruder screw and its supporting drive shaft
is too large, and the centerline of the two shafts is not concentric during
rotation and the error is too large.
2. The extruder screw is bent and deformed, and the straightness of the axis centerline is greatly different.
3. The perpendicularity between the end face of the extruder barrel and the base flange of the machine base and the centerline of the barrel cannot be guaranteed, and the error is large.
4. The extruder screw is assembled in the barrel of the extruder, and the error of the concentricity of the two parts is large.
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