Common Issues with sinking fish feed making machines - Knowledge

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Analysis of the core causes and locations of blockages. Die head blockage is the most common, often caused by excessive impurities in the raw material (such as metals or stones), uneven particle size (some particles > 80 mesh), or excessively high temperatures in the sinking fish feed making machine causing the raw material to scorch. Residual substances adhere to the die head orifice, gradually accumulating and causing blockage. Screw and extrusion chamber blockages originate from excessively high moisture content in the raw material (>14%), causing material to adhere to the screw surface, or excessively high feeding speed, causing raw material to accumulate in the extrusion chamber and preventing timely extrusion. Furthermore, if the extruder has not been cleaned for a long time, moldy and caking residual material inside can also cause blockages, especially if it is not thoroughly cleaned after shutdown, making it highly prone to problems upon restarting.

Emergency handling methods for blockages in floating feed extruder machines.

Upon discovering a blockage, immediately stop the machine, disconnect the power and steam, and wait for the mini fish feed machine to cool to room temperature (<50℃) before handling it to avoid burns. Die head blockage: Disassemble the die head and use a special tool to clean any residual charred material and impurities from the orifice. If the orifice is severely worn, replace it promptly. Screw and extrusion chamber blockage: Disassemble the barrel, clean any adhering material from the screw surface, and check the screw wear. If scratches or deformation are found, repair or replace it. Simultaneously clean any hardened material from the inner wall of the extrusion chamber. After cleaning, reassemble the equipment and perform a no-load test run to ensure there are no jams or leaks before resuming production.

Key measures to prevent blockage in mini floating fish feed machines: In the raw material pretreatment stage, strengthen screening to remove impurities and ensure uniform particle size. Control the moisture content to 12%-14% to prevent adhesion. During production, feed at a uniform rate to avoid overload. Monitor pressure changes in real time. If the pressure rises abnormally (exceeding the set value by 10%), reduce the feed rate or stop the machine for inspection. After operation, thoroughly clean the extruder die head, screw, and extrusion chamber to remove any residual material. Regularly check the die head orifice wear and replace worn parts promptly. Regularly lubricate the extruder transmission system to ensure smooth screw operation and reduce the risk of material accumulation.

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