What are the repair steps for grinding malfunctions in pet food making machines? - Knowledge

content

Troubleshooting: Visual Signals of Grinding Component Wear

By combining the status of the pet food extrusion machine with other equipment, it's possible to quickly determine if the grinding components of the pellet mill are worn, avoiding misdiagnosis. There are four key signals:
1. The ground dog food pellets are noticeably coarser, with coarse particles accounting for more than 30%, and the surface is rough and lacks a smooth luster. After ruling out insufficient curing in the extruder, wear of the grinding components is confirmed.
2. A continuous "grinding" noise occurs during pellet mill operation, and this noise intensifies with increasing grinding load. After stopping the machine and disassembling the grinding components, obvious scratches, wear marks, and even unevenness are visible on the grinding disc and rollers.
3. Grinding efficiency decreases; with the same amount of raw material, grinding time is more than 20% longer than normal, and there are still clumps of insufficiently ground material after grinding.
4. Increased energy consumption in the pet food extrusion equipment; when operating in conjunction with the extruder, overall energy consumption increases by 15% compared to normal, due to increased operating resistance caused by wear of the grinding components.

Feed Machinery Manufacturers Explain The Working Principle Of The Equipment How To Avoid Clogging Of Feed Extruder?

Repair Steps: Precise Repair Based on Wear Level to Avoid Secondary Damage

Depending on the wear level of the grinding parts, we will either "repair by grinding" or "replace the parts," while simultaneously applying protective measures to the dog food processing machine to prevent rapid wear again after repair. Step 1: Safely shut down and disconnect power. Turn off the power to the pellet mill and extruder. Disassemble the pellet mill's grinding components (grinding disc, grinding roller), clean off any material residue and wear debris, and measure the wear amount with calipers.
Step 2: Repair minor wear (wear ≤ 0.2mm). Use a special grinding tool to grind the worn surface, removing scratches and unevenness to ensure a smooth surface. Simultaneously clean the mounting area of the grinding components to prevent impurities from affecting installation accuracy.
Step 3: Repair moderate wear (0.2mm < wear ≤ 0.5mm). After grinding, calibrate the grinding gap and apply a special wear-resistant coating to improve component wear resistance and extend the lifespan of the dog food extruder machine. After applying the coating, allow it to air dry naturally for 2-4 hours, avoiding high-temperature baking.
Step 4: Treat severe wear (wear > 0.5mm). Directly replace the grinding components (grinding disc, grinding roller). When replacing, select components that match the pellet mill model, ensuring secure installation and uniform grinding gap. Simultaneously check the extruder's discharge port, removing any hard impurities that may be trapped to prevent rapid wear of the new components.

How To Quickly Disassemble The Feed Extruder? What Should I Do If The Feed Extruder Does Not Work Well?

Post-repair protection: Linking with the dog food pellet making machine to reduce wear recurrence

First, strictly control raw material quality and optimize the extruder's feeding and screening process to remove hard impurities and prevent them from entering the pellet mill's grinding components. Second, standardize coordinated operation by adjusting the operating parameters of the extruder and pellet mill to ensure material delivery matches grinding capacity and prevent overloading of grinding components. Third, perform regular maintenance: clean residual material from the dog food pellet extruder's grinding components weekly, check wear monthly, perform grinding calibration every 3 months, and replace grinding components every 6-12 months (depending on production intensity). Fourth, regularly maintain the extruder screw and barrel to prevent material from agglomerating inside the extruder, which would exacerbate wear on grinding components after entering the pellet mill.

about Us

MIKIM's fish feed pellet production lines and supporting machinery offer excellent value for money. Not only are they affordable, eliminating middlemen markups and allowing small and medium-sized enterprises (SMEs) and fish farmers to purchase complete sets of equipment at reasonable costs, but they also boast exceptional efficiency. The fully automated process, from raw material crushing and precise ingredient mixing to extrusion pelleting and maturation, is completed in one continuous flow.

This results in high starch gelatinization rates and uniform pellet formation, significantly improving production efficiency and feed quality, truly achieving "low cost, high output." Choosing a MIKIM fish feed pellet production line means enjoying comprehensive pre-sales and after-sales service, including 24-hour online customer support, a one-year warranty on the entire machine, professional on-site installation, commissioning, and maintenance, and a stable supply of spare parts. Customers can buy with confidence and use with peace of mind, with both excellent value and service quality!

Customer visit

Customer visit