What are some common problems and solutions in pet food machine making?

The core causes of a sudden drop in the production capacity of wet pet food machines need to be investigated from three aspects: equipment, parameters, and raw materials. Equipment wear is the primary cause. Wear exceeding 0.5mm on the thread edges of a twin-screw extruder leads to decreased raw material conveying efficiency. Wear on the inner wall of the barrel increases the clearance between the extruder and the screw (normally ≤0.3mm), preventing sufficient pressure from pushing the raw material forward. Long-term use can cause material residue to clog the die orifices, reducing the discharge area and indirectly leading to a decrease in production capacity. Imbalanced parameter settings are also significant. Excessively low extrusion section temperature results in poor raw material flowability, increasing conveying resistance. The screw speed is not adjusted according to the characteristics of the raw material; for example, using low speed parameters for grain feed when producing high-protein feed. A mismatch between the feeder and screw speed leads to insufficient feed volume, causing the machine to "not be fully utilized." Fluctuations in raw material condition also affect production capacity. High moisture content (>18%) increases viscosity, prolonging residence time in the barrel. Uneven mixing of raw materials, with excessively high fiber content in some areas, causes conveying blockages.

To resolve a sudden drop in the production capacity of extruder machines for pet food, the principle of "starting with the easy and then moving to the difficult" should be followed. First, check the raw material condition, measuring moisture content and mixing uniformity. If the moisture content is too high, sun-dry or oven-dry it; if the mixing is uneven, remix it. Second, optimize parameter settings, adjusting the extrusion temperature according to the raw material type (increasing it to 140-150℃ for high-protein feed) and simultaneously increasing the screw speed (10%-15% higher than the original parameter), ensuring the feeder speed and screw speed are synchronized (feed rate matches screw conveying capacity). If production capacity does not improve after parameter adjustments, stop the machine and check for equipment wear: measure the screw thread thickness with a micrometer; screws with excessive wear need to be repaired by welding or replaced; measure the clearance between the barrel and screw; if it exceeds the tolerance, replace the barrel bushing; disassemble the die, clean the blocked holes with a special cleaning needle, and replace severely worn dies if necessary. One company, through this process, found that screw wear and die blockage were jointly causing the production capacity decline; after repair, the production capacity recovered to 780 kg/h.

Preventing sudden drops in production capacity requires establishing an equipment wear monitoring mechanism. Measure the screw-barrel clearance weekly, check the mold orifice blockage monthly, and test and record the screw wear quarterly; strictly test the moisture and particle size of raw materials before they are put into storage, and unqualified raw materials are prohibited from being put into production; establish parameter files and develop exclusive parameter tables for different formulas to avoid arbitrary parameter adjustments.

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!

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