1、 Preparation before operation

• Equipment inspection
  • Appearance and StructureCheck all components of the cleaning line, such as crushers, friction cleaners, rinse tanks, dehydrators, conveyor belts, etc., for damage, looseness, or abnormal wear. For example, checking whether the blades of the crusher are sharp, whether there are gaps, and whether the tension of the conveyor belt is appropriate.
  • Electrical systemCheck whether the electrical circuit is intact and whether there is a risk of damage, aging, or short circuit. Ensure good grounding of electrical equipment such as motors and control cabinets to prevent electric shock accidents.
  • lubrication conditionPerform lubrication inspection on the transmission components such as bearings, chains, and gears of the equipment, add an appropriate amount of lubricating grease or oil to ensure smooth operation of the equipment.
• Material preparation
  • Classification and filteringClassify the recycled plastic film, remove hard impurities such as metals, stones, wood, and oversized film clumps to avoid damage to the equipment.
  • preprocessingFor severely contaminated or adhered films, manual pre-treatment can be performed first, such as tearing off the adhered parts, removing large stains, etc., to improve cleaning efficiency.

2、 Precautions for operation process

• Parameter Settings
  • temperature controlReasonably set the temperature of the cleaning water according to the material and pollution level of the plastic film. Generally speaking, higher water temperatures help remove impurities such as oil and glue, but excessively high temperatures may cause plastic deformation or aging. For example, for polyethylene (PE) film, the cleaning water temperature can be controlled between 50-70 ℃.
  • Speed and timeAdjust the speed of the crusher, the stirring speed of the friction cleaning machine, and the cleaning time to achieve the best cleaning effect. Excessive rotation speed or cleaning time may lead to excessive film breakage, affecting its reuse value; If the speed is too slow or the cleaning time is too short, impurities may not be removed.
• operation monitoring
  • Observe the operating statusDuring the operation of the cleaning line, closely observe the operating status of the equipment, such as whether there are any abnormal noises or vibrations. If any abnormalities are found, the machine should be stopped immediately for inspection and troubleshooting before continuing to operate.
  • Check the cleaning effectRegularly extract samples from the cleaned film to check if its cleanliness meets the requirements. If the cleaning effect is poor, the cleaning parameters can be adjusted appropriately or the cleaning frequency can be increased.
• safety protection
  • Wear protective equipmentOperators should wear protective gloves, goggles, earplugs and other protective equipment to prevent injury during operation.
  • Set up safety warning signsSet up clear safety warning signs around the cleaning line to remind operators to pay attention to safety. Non operators are prohibited from entering the cleaning line work area.

3、 Water quality and chemical management

• water quality requirements
  • cleanlinessThe cleaning water should be kept clean to avoid excessive impurities and suspended solids in the water, which may affect the cleaning effect and block equipment pipelines. Regularly filter and replace the cleaning water.
  • Hardness controlFor some plastic films that are sensitive to water hardness, such as polyvinyl chloride (PVC) films, the hardness of the cleaning water should be controlled to prevent scale from depositing on the surface of the film. Softening water equipment can be used to treat cleaning water.
• Drug use
  • Choose the appropriate medicationChoose appropriate cleaning agents based on the type and degree of contamination of plastic film, such as stain removers, degreasers, defoamers, etc. The use of medication should strictly follow the product manual to avoid excessive or improper use.
  • Drug concentration monitoringRegularly monitor the concentration of chemicals in the cleaning water to ensure that it remains within the effective range. If the concentration of the medication is too low, it can be added appropriately; If the concentration of the drug is too high, it may cause corrosion or affect the performance of the plastic film.

4、 Equipment maintenance and upkeep

• Daily cleaning
  • Clean up residuesAfter each cleaning operation is completed, residual films, impurities, and dirt in the cleaning line should be promptly cleaned to prevent them from accumulating inside the equipment, affecting equipment performance and the next cleaning effect.
  • Washing equipmentRinse the cleaning line with clean water, especially the friction cleaning machine, rinse tank, and other parts, to remove residual chemicals and stains.
• regular maintenance
  • Replacement of vulnerable partsRegularly inspect and replace vulnerable parts of equipment, such as blades of crushers, mixing blades of friction cleaning machines, and filter screens of dehydrators. The wear and tear of vulnerable parts can affect the normal operation and cleaning effect of the equipment, and should be replaced in a timely manner.
  • Equipment maintenanceAccording to the user manual and maintenance plan of the equipment, regularly conduct comprehensive maintenance on the cleaning line, check whether each component of the equipment is normal, and promptly repair and adjust any problems found.

5、 Environmental Protection and Energy Conservation

• wastewater treatment
  • compliance dischargeThe wastewater generated during the cleaning process contains a large amount of impurities and chemicals, which should be treated and discharged in compliance with standards. Wastewater can be treated using methods such as sedimentation, filtration, and biochemical treatment to reduce environmental pollution.
  • recyclingFor treated wastewater, recycling can be considered to reduce water resource consumption. For example, using treated wastewater to flush floors or as supplementary water for cleaning.
• energy management
  • Optimize equipment operationReasonably arrange the operation time of the cleaning line, avoid equipment running without load or waiting for a long time, and reduce energy consumption.
  • Adopting energy-saving equipmentWhen selecting equipment, prioritize energy-saving cleaning equipment such as high-efficiency motors and frequency converters to improve energy efficiency.