As a key equipment for processing materials in industrial production, the cleaning and maintenance of centralized crushers are directly related to equipment life, production efficiency, and product quality. The following is a systematic introduction to the cleaning and maintenance methods of centralized crushers from four aspects: cleaning steps, maintenance cycles, precautions, and common problem handling:
1、 Cleaning steps: phased cleaning
Shutdown, power outage, and safety protection
Turn off the device power and hang a warning sign reading 'Do not close' to prevent accidental startup.
Wear protective gloves, goggles, and dust masks to avoid contact with sharp parts or inhalation of dust.
Disassemble detachable components
Screen/filter: Loosen the fixing bolts and carefully remove the screen to avoid deformation or damage.
Blade/Hammer: Use specialized tools to disassemble rotating parts and mark the position for restoration.
Inlet/outlet: Disassemble the connecting flange and clean the residual materials inside.
Preliminary cleaning of residual materials
Use a soft bristled brush or compressed air to blow the inside of the equipment to remove large pieces of material and dust.
For materials with strong adhesion, such as resins and syrups, they can be gently scraped off with a wooden shovel or plastic scraper.
Deep cleaning
Water washing method: suitable for water-soluble materials such as salt and sugar. Rinse the interior of the equipment with a low-pressure water gun to avoid damaging precision components with high-pressure water.
Solvent cleaning: For oily or stubborn stains (such as lubricants, adhesives), use specialized solvents (such as alcohol, acetone), soak and wipe with a soft cloth.
Steam cleaning: For high-temperature tolerant components (such as stainless steel chambers), rinse with high-temperature steam generated by a steam generator, sterilize and disinfect while removing oil stains.
Drying and assembly
Wipe the interior of the equipment dry with a clean cloth or let it air dry naturally to prevent residual moisture from causing rust.
Assemble the components in the reverse order of disassembly, ensuring that the tightening torque of the bolts meets the requirements (such as the torque of the fixing bolts for the screen mesh being 10-15N · m).
2、 Maintenance cycle: graded maintenance plan
Daily maintenance
Cleaning: Clean the dust from the inlet, outlet, and equipment surface to avoid accumulation that affects heat dissipation.
Inspection: Confirm that the blade and hammer are not loose or worn, and the screen mesh is not damaged or blocked.
Lubrication: Apply lubricating grease (such as lithium based grease) to moving parts such as bearings and gears to reduce wear.
Weekly maintenance
Deep cleaning: Disassemble the screen and blades, clean and inspect for wear and tear.
Tightening inspection: Check all bolts and nuts for looseness, especially the motor fixing bolts.
Motor inspection: Clean the dust on the motor cooling fan and measure the insulation resistance (should be ≥ 0.5M Ω).
Monthly maintenance
Maintenance of transmission system: Check the tension of the belt (press down less than 10mm), adjust or replace the aging belt.
Electrical system inspection: Check whether the wiring terminals are loose and whether the cable sheath is damaged.
Performance testing: Run the equipment without load, observe whether the vibration and noise are abnormal, and measure whether the current is stable.
Annual Maintenance
Comprehensive disassembly: Entrust professional personnel to disassemble the equipment, clean the internal dirt, and inspect the wear of the cavity.
Replace vulnerable parts: Batch replace vulnerable parts such as blades, hammers, and screens to ensure consistent performance.
Anti corrosion treatment: Spray anti rust paint on metal parts and check the aging condition of non-metal parts.
3、 Attention: Avoid operational risks
Safety first
It is strictly prohibited to clean or maintain the equipment during operation, and the machine must be shut down and powered off before operation.
Avoid water or solvents from entering electrical components such as motors and control boxes during cleaning to prevent short circuits.
Tool and Material Selection
Use specialized tools to disassemble components and avoid deformation caused by violent tapping.
Choose neutral cleaning agents to avoid corroding metal or plastic parts.
environmental control
Maintain good ventilation at the cleaning site to prevent solvent evaporation and accumulation from causing fires or poisoning.
The cleaning wastewater needs to be treated and discharged in accordance with environmental protection requirements.
Recording and Tracing
Establish maintenance records, recording information such as cleaning time, replacement parts, and repair content.
Mark the service life of key components (such as motors and bearings) and develop a replacement plan in advance.
4、 Common problem handling: Quickly restore device performance
Abnormal vibration of equipment after cleaning
Reason: The blade/hammer head is installed unevenly, and the screen mesh is not securely fixed.
Solution: Re calibrate the blade dynamic balance (error<0.5g) and tighten the screen bolt.
Production decreases after cleaning
Reason: Blockage of the sieve and wear of the blade lead to a decrease in crushing efficiency.
Solution: Replace the screen with a new one and adjust the blade clearance to the standard value (such as 0.5-1mm).
The motor overheats after cleaning
Reason: During cleaning, water enters the motor and there is insufficient lubrication of the bearings.
Solution: Disassemble the motor and dry it, then refill with lubricating grease (with a dosage of 1/3-1/2 of the bearing chamber).
Increased noise after cleaning
Reason: Damaged bearings, loose belts, or loose components.
Solution: Replace the bearing (model to match), adjust the belt tension, and tighten all bolts.