The maintenance and upkeep of the water-cooled dry granulation machine should be combined with the characteristics of the water-cooled system and the dry granulation machine, and comprehensively managed from the aspects of operating standards, regular inspections, cleaning and maintenance. Here are the specific methods:
1、 Preparation and standardization before operation
1. Security check
Before maintenance, it is necessary to cut off the power supply, close the cooling water valve, and hang warning signs to ensure that the equipment is in a pressure free and power-off state. Operators need to undergo professional training and be familiar with equipment structure and safety regulations.
2. Water cooling system inspection
Check the quality, flow rate, and pipeline connections of the cooling water to ensure there are no leaks or blockages. In winter, residual water should be drained to prevent equipment from freezing and cracking.
3. Equipment status confirmation
Check the integrity of fasteners, lubrication parts, and screen mesh, and confirm that the cleaning certificate is valid.
2、 Daily maintenance and cleaning
1. Water cooling system maintenance
Regularly clean the cooling water pipes (especially when the water quality is poor), at least once a year.
Check the quality of lubricating oil and replace deteriorated oil products in a timely manner; Regularly replace the dry filter element.
2. Granulator cleaning
After production is completed, disassemble washable components (such as storage hoppers, feeding screws, support nets, etc.) and use brushes or wet towels to remove residual materials.
Clean the loose material hopper, observation port and other parts to avoid material accumulation affecting operation.
3. Key component maintenance
Check the gap between the pressure roller and the ring mold (usually 0.1-0.3mm) to avoid wear or slippage.
Regularly calibrate valves, pressure gauges, and other instruments to ensure accurate parameters.
3、 Regular maintenance and fault prevention
1. Maintenance of refrigeration system
Operated by professionals to avoid high-pressure burns or low-temperature frostbite; When discharging refrigerant, it is necessary to start from the high-pressure section and ensure the flow of cooling water.
Check the expansion valve, solenoid valve and other components, adjust the liquid flow rate or disassemble according to the specifications.
2. Lubrication and Sealing
The roller bearing adopts a labyrinth oil seal and is regularly lubricated with grease to prevent dust from entering.
Check the aging condition of the seals and replace them in a timely manner to prevent leakage.
4、 Precautions
1. It is prohibited to weld or disassemble components while the equipment is under pressure.
2. Safety devices (such as safety pins and travel switches) shall not be dismantled or replaced without authorization.
3. Abnormal situations (such as abnormal noises or leaks) require immediate shutdown and contact with professional personnel for handling.
By standardizing operations, regular cleaning, and targeted maintenance, the lifespan of water-cooled dry granulation machines can be effectively extended, ensuring production stability.