1、 Cleaning and anti blocking of conveying system

1. Cleaning up streaming channels
   • Weekly operationClean up the sediment and debris in the flow channel, check the entanglement of mesh bags, mouth ropes, etc., to avoid blockage.
   • Disinfection treatmentAdd disinfectant (such as chlorine containing disinfectant) to soak the channel to prevent microbial growth.
   • Water exchange managementReplace the flowing water once a week to ensure clean water quality and reduce impurity deposition.
2. Maintenance of conveyor belts and elevators
   • routine inspectionCheck the tension of the conveyor belt before starting up to avoid slipping or deviation; Clean the surface of the drum and adjust the position of the rollers.
   • troubleshootingIf the conveyor belt tears, check the quality of the joints or whether there are hard objects between the rollers, reconnect and remove debris.

2、 Deep cleaning in the cleaning section

1. Equipment pre-processing
   • power outage operationCut off the power, hang a warning sign to prevent accidental startup.
   • Disassembly of componentsRemove removable components such as the sieve, nozzle, and filter screen to remove residual starch slurry and potato residue.
2. Multi level cleaning process
   • Preliminary dry cleaningUse brushes and scrapers to remove residual powder and debris from the inner and outer surfaces and components of the equipment.
   • wet clean：
     • Rinse with clean waterRinse with a high-pressure water gun for 15 minutes to remove washable substances.
     • alkali washingPrepare a 2% NaOH solution (40 ℃) and cycle for 1 hour to remove oil and protein.
     • picklingNeutralize the alkali residue with hydrochloric acid solution and clean the substances that are insoluble in alkali.
     • Biological enzyme washing(Optional): Add hydrolytic enzyme diluent (50-55 ℃), cycle and clean for 2-3 hours, decompose pectin, starch and other attachments.
   • Final flushingRinse equipment and components with clean water to ensure there are no residual disinfectants or enzyme preparations.
3. Equipment drying and assembly
   • Drying treatmentDry or wipe the components dry to prevent rusting.
   • Check assemblyAfter confirming that there are no stains or odors, reassemble the components to ensure proper installation.

3、 Anti blocking measures in the crushing and filtering section

1. Crusher cleaning
   • Hammer inspectionRegularly check the wear of high-speed rotating hammer blades, replace damaged hammer blades in a timely manner, and avoid uneven crushing leading to blockage.
   • Screen cleaningClean the residual potato residue on the 1.2mm steel sieve to prevent blockage of the sieve holes from affecting the discharge.
2. Maintenance of filtration equipment
   • Multi level filtration：
     • pre-filtrationUse a 60 mesh sieve for preliminary filtration to remove large particle impurities.
     • fine filtrationUsing a 120-140 mesh sieve for secondary filtration and a 260 mesh sieve for final filtration to improve starch purity.
   • Screen replacementCheck if the screen mesh is damaged and replace it promptly to prevent fine slag and fibers from leaking into the starch slurry.
3. Desanding and Cyclone Purification
   • Desander operationUse a stainless steel sand remover to remove sediment from starch slurry and regularly clean the sediment at the bottom of the sand remover.
   • Cyclone station cleaningMonitor the discharge concentration of the cyclone with a mass flow meter, and regularly backwash the cyclone tube to prevent blockage of oil powder and yellow powder.

4、 Pipeline and sedimentation tank blockage prevention

1. Pipeline flushing
   • High pressure recoilUse a high-pressure water gun to backwash and hammer the grinding machine into the trench, the common pipe of the centrifugal screen, and the water inlet of the dewatering screen, which are prone to blockage.
   • valve controlOpen the cell fluid discharge valve (small amount) to prevent pipeline blockage caused by high temperature and pressure in the first four stages.
2. Sedimentation tank management
   • Butter powder cleaningClean the upper layer of butter powder to prevent contamination of the next batch of starch slurry.
   • Discharge of acid slurry waterRegularly remove acid slurry water to avoid sediment accumulation that affects starch quality.

5、 Daily maintenance and establishment of systems

1. Establishment of operating procedures
   • Write equipment operation manuals to clarify standards such as cleaning frequency, disinfectant ratio, and component replacement cycle for each section.
   • Establish a job responsibility system to ensure that each device has a dedicated person responsible for cleaning and maintenance.
2. Maintenance Plan
   • Pre shift inspectionCheck if the equipment operates flexibly and add lubricating oil to the bearing seat oil injection point.
   • Post shift cleaningClean up residues inside and outside the equipment, and keep the work area clean.
   • Regular major repairsConduct a comprehensive inspection of the equipment every six months and replace worn parts such as main bearings, motors, and reducers.