Maintenance and maintenance of the extruder

The system is maintained in both routine and regular maintenance.

(1) Routine maintenance is a routine routine, which does not take up the working hours of the equipment and is usually completed during the start-up period. The focus is on cleaning the machine, lubricating the moving parts, tightening the loose threaded parts, checking and adjusting the motor in time, controlling the instrument, working parts and piping, etc.

(2) Regular maintenance is generally carried out after the continuous operation of the extruder is 2500-5000h. The machine needs to be dismantled, measured, and identified for the wear of the main parts. Replace the parts that have reached the specified wear limit and repair the damaged parts.

(3) It is not allowed to operate the empty machine, so as to avoid the screw and the machine.

(4) If an abnormal sound occurs during the operation of the extruder, stop it immediately and inspect or repair it.

(5) Strictly prevent metal or other debris from falling into the hopper to avoid damage to the screw and barrel. In order to prevent iron debris from entering the barrel, a magnetically absorbing part or a magnetic frame may be placed at the feeding port of the material to prevent the impurities from falling into the material.

(6) Pay attention to the clean production environment, do not let the garbage impurities mix into the material to block the filter plate, affect the product output, quality and increase the resistance of the machine head.

(7) When the extruder takes a long time to stop using, it should be coated with anti-rust grease on the working surface of screw, machine and machine head.

(8) Regularly calibrate the temperature control instrument to check the correctness of the adjustment and the sensitivity of the control.

(9) The maintenance of the gearbox of the extruder is the same as that of the general standard reducer. Mainly to check the wear and failure of gears, bearings and so on. The gearbox should use the lubricating oil specified in the machine manual, and add the oil according to the specified oil level. The oil is too small, the lubrication is not reversed, and the service life of the parts is reduced. The oil is too much, the heat is large, the energy consumption is high, and the oil is easy. Deterioration also invalidates the lubrication, causing damage to the parts. The oil leakage part of the gearbox should be replaced in time to ensure the amount of lubricant.

(10) The inner wall of the cooling water pipe attached to the extruder is easy to scale and the outside is easily corroded and rusted. Care should be taken during maintenance. Excessive scale will block the pipeline and will not reach the cooling effect. If the corrosion is serious, water leakage will occur. Therefore, measures such as descaling and anti-corrosion and cooling should be taken during maintenance.

(11) For the DC motor that drives the screw to rotate, it is important to check the brush wear and contact. The insulation resistance of the motor should be measured frequently. In addition, check the connection wires and other components for rust and take protective measures.

(12) Designate a person to be responsible for equipment maintenance. Detailed records of each maintenance and repair situation are included in the plant equipment management file.