The continuous high temperature in recent days
makes people feel unbearable
Then the question is
How to protect equipment in summer?
Jinwei Machinery gives you tips
Daily operation preparation
Safety check points before starting
· Check the safety protection device
Before starting the machine, you must carefully check whether all the safety protection devices of the extruder are intact, and ensure that the protective door, emergency stop button and safety light curtain are in normal working condition to prevent accidental injuries during operation.
· Verify the lubrication system
Before the extruder equipment is operated at high temperature, focus on checking the oil level and grease quality of the lubrication system to ensure that all moving parts are fully lubricated to avoid equipment wear or failure due to insufficient lubrication.
· Electrical system inspection
Before starting the machine, thoroughly check the electrical system to ensure that all wiring is firm and not exposed, and there is no debris in the electrical control box to prevent electrical short circuit or fire, and ensure the stable and safe operation of the extruder equipment in a high temperature environment.
Setting and adjusting the heating temperature of the trough
·Basic principles of trough heating
When setting the trough heating temperature, the melting point and fluidity of the material must be considered to ensure that the material can be heated evenly during the extrusion process to avoid incomplete melting of the material due to too low a temperature or degradation of the material due to too high a temperature.
·Key steps to adjust the temperature
When adjusting the trough heating temperature, a basic temperature should be preset according to the material type, and then fine-tuned through the actual extrusion effect until the optimal melting state is reached. This process may require multiple tests to determine the optimal temperature.
·Temperature monitoring and maintenance
To ensure the stability and accuracy of the trough heating temperature, it is necessary to regularly use professional equipment to detect and calibrate the heating system, monitor the working condition of the heating element, and replace damaged parts in time to ensure accurate temperature control during the extrusion process.
Control and influence of plastic filling amount
·The impact of filling amount on product quality
The filling amount of plastic directly affects the density and dimensional stability of the product. Excessive or insufficient filling amount will cause defects in the product. Accurately controlling the filling amount is a key step to ensure product quality.
·Filling amount optimization strategy
Through experiments and data analysis, determining the optimal filling amount range can improve production efficiency and reduce material waste. Regularly adjust equipment parameters to meet the needs of different production batches.
·Monitoring and adjustment mechanism
Establish a real-time monitoring system to adjust the filling amount in time to ensure the stability of the production process. Use automation technology to improve the control accuracy of the filling amount and reduce human errors.
Cleaning and maintenance
Improve system efficiency
Regular cleaning of the cooling system can effectively remove dirt and sediment inside the system. These impurities will reduce the heat exchange efficiency and lead to a decrease in cooling effect. By cleaning, it can ensure that the system operates efficiently and maintain the best working condition of the equipment.
Extend Equipment Life
Dirt and deposits that accumulate in cooling systems not only affect performance, but can also corrode components and shorten equipment life. Regular cleaning and maintenance can help prevent this damage, thereby extending the life of equipment such as extruders and reducing the frequency of replacement.
Avoid downtime due to failure
Blockage or damage to the cooling system may cause the equipment to overheat, which in turn may lead to unexpected failure or downtime, which will have a serious impact on production. Through regular cleaning and maintenance, potential problems can be discovered and solved in time, avoiding production interruptions caused by equipment failure.
Parts replacement plan
Identification and replacement cycle of wearing parts
· Identification method of wearing parts
In the maintenance of extruder equipment at high temperature, the wearing parts must be accurately identified first, which usually includes confirming which parts are more frequently worn or damaged through equipment manuals, experience judgment or professional tools.
· Determination of replacement cycle
Each wearing part has its specific replacement cycle, which is determined according to the material, working conditions and historical maintenance records of the part to ensure that the equipment can operate in the best condition and avoid production interruptions caused by aging of parts.
· Preventive replacement strategy
In order to reduce the impact of sudden failures, it is key to adopt a preventive replacement strategy, which involves regularly checking the status of wearing parts and replacing them before reaching the predetermined service life, thereby ensuring the stable operation and production efficiency of the equipment.
Make a replacement plan based on the actual situation
· Adjust the plan based on actual conditions
In the actual production environment, the operating conditions of the equipment may be different from the manufacturer's assumptions. Therefore, it is necessary to appropriately adjust the replacement cycle recommended by the manufacturer based on the actual operating time, load conditions and environmental factors of the equipment.
· Priority of component replacement
In the case of limited resources, it is crucial to determine which components need to be replaced first. By analyzing the failure rate and maintenance cost of the equipment, a reasonable priority for component replacement can be effectively formulated to ensure stable operation of the equipment.
Lubrication and maintenance
Cleaning and oil changing steps for speed reducer and rolling bearings
Preparation for cleaning the gearbox
Before cleaning and changing the oil of the gearbox, you first need to disconnect the power supply to ensure that the equipment is completely stopped. Then release the oil in the gearbox, and prepare the cleaning agent and new lubricating oil to prepare for the next step of cleaning.
Careful cleaning of rolling bearings
Cleaning of rolling bearings should be done carefully. Use a soft brush and a special cleaning agent to remove old oil and impurities from the bearings and surrounding areas. After cleaning, wipe them dry with a clean rag and check whether the bearings are damaged or worn to ensure that they are running well.
Complete oil change and final inspection
After cleaning, add new lubricating oil to the reduction box and rolling bearings to the recommended oil level. Then reassemble and start the equipment to observe whether the lubrication system is normal and there is no leakage. Finally, perform a running test to ensure that everything is normal before putting it into production.
Regular inspection of safety devices
·Safety valve inspection
Regularly check the safety valve of the extruder to ensure that it can work normally under high temperature conditions, prevent equipment damage or safety accidents caused by valve failure, and ensure the stability of production and the safety of personnel.
·Emergency shutdown system detection
The emergency shutdown system is an important safety device of the extruder. It is necessary to perform functional tests and response time tests regularly to ensure that the power supply can be cut off immediately when the equipment is abnormal, avoid the expansion of the fault, and protect the safety of the equipment and operators.
·Temperature monitoring and alarm
Extruders operating at high temperatures must be equipped with a temperature monitoring system and set a reasonable temperature threshold. Once the temperature exceeds the standard, the alarm is activated, and timely measures are taken to prevent the equipment from overheating to ensure the safety and continuity of the production process.
Electrical system inspection
Key points for safety inspection of electric heating system
Insulation inspection of electric heating system
In order to ensure the safe operation of the electric heating system, insulation inspection must be carried out regularly. This includes testing the insulation resistance of electric heating elements, wiring and control systems to ensure that there is no risk of leakage and prevent safety accidents caused by electrical failures.
·Temperature control and overload protection
The temperature control system of the extruder equipment at high temperatures must be accurate and reliable to avoid damage to the equipment or affect product quality due to excessive temperature. At the same time, an overload protection device should be equipped to quickly cut off the power supply when the current is abnormal to protect the electric heating system from damage.
Heating element aging inspection
Periodically inspect the heating elements of the electric heating system for aging, and replace the elements that have been worn out or have degraded in performance in a timely manner. Ensure heating efficiency and safety, and avoid equipment damage or production accidents caused by uneven heating or failure.
Accuracy verification of electrical circuits and instruments
·Integrity check of electrical circuits
Under high temperature environment, the electrical circuits of extruder equipment are easily damaged. Regularly checking the integrity of the circuits is a key step to ensure the safe operation of the equipment. This includes checking whether the wires, cables and connection points are worn or loose.
·Verification of instrument accuracy
High temperature working conditions will affect the accuracy of the instrument. Regular calibration and verification of the instruments of extruder equipment is an important part of ensuring the control accuracy of the production process and product quality.
·Fault diagnosis and preventive measures
Through the accuracy verification of electrical circuits and instruments, potential faults and problems can be discovered in time, and corresponding preventive measures can be taken to avoid small problems from turning into major faults and ensure the stable operation of the extruder equipment.
Fault prevention and handling
Common failure types and their preventive measures
· Extruder overheating in high temperature environment
In high temperature environment, extruder equipment is prone to overheating, resulting in reduced machine performance or even damage. Preventive measures include regular inspection of the cooling system to ensure good heat dissipation and avoid long-term high-load operation.
· Poor extruder lubrication
High temperature environment accelerates the decomposition and evaporation of lubricating oil, resulting in poor lubrication of the extruder and increased wear. Preventive measures include using high-temperature resistant lubricating oil, and regularly checking the oil quantity and oil quality to maintain proper lubrication.
· Electronic component failure
High temperature poses a threat to the electronic components of the extruder and may cause premature aging or failure of the components. Preventive measures include selecting high-temperature resistant lubricating oil.
Emergency procedures when a fault occurs
·Immediately stop the machine for inspection
Once an abnormality is found in the extruder equipment, the first measure is to stop the equipment immediately to prevent the fault from expanding. Then conduct a comprehensive inspection of the equipment to determine the specific location and cause of the fault.
·Notify the maintenance team
In an emergency, quickly contact the professional maintenance team to intervene and provide technical support. Ensure that the maintenance team can arrive at the site in time to professionally diagnose and handle the fault to shorten the repair time.
·Implement temporary repair measures
While waiting for the professional team to arrive, take temporary measures according to the fault situation, such as shutting down related systems, isolating the faulty part, etc., to avoid the fault affecting other equipment or production processes and reduce losses.
