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Blockage faults in floating fish food extruders are mainly classified into three categories: feed inlet blockage, extrusion chamber blockage, and die head blockage. The symptoms and causes of blockage differ depending on the location, requiring precise differentiation for troubleshooting and solutions. Typical symptoms of feed inlet blockage include feed interruption and abnormally high equipment load. The core causes are often excessively high raw material moisture content (exceeding 15%), incompletely crushed raw material clumps, or excessively high feed speed.
During troubleshooting, first observe the state of the raw material in the feed hopper. If the raw material accumulates and does not fall, it can be preliminarily determined that the feed inlet is blocked. Solution: Immediately shut down the machine by disconnecting the power, removing the feed hopper, and using manual tools to clear any clumped raw material. Simultaneously check the raw material moisture content; if it is too high, dry it. Adjust the feed regulating valve to reduce the feed speed, ensuring that the feed rate matches the screw's pushing capacity.
Extrusion chamber blockage is a more serious fault, manifesting as a sudden shutdown of the small floating fish feed pellet machine, motor overload tripping, accompanied by abnormal noise. The main causes are excessively low moisture content in the raw material (below 12%) leading to excessive frictional resistance, or severe screw wear preventing normal material feeding. It could also be due to the presence of hard impurities such as metal or stones in the raw material. Troubleshooting requires first disconnecting the power and cooling the material, then removing the die and feeding system. Use a special cleaning rod to clear the extrusion chamber from the die end in reverse, carefully observing for hard impurities or screw wear marks during cleaning. If hard impurities are found, thoroughly clean them and inspect the screw and the inner wall of the extrusion chamber for damage. If the screw is severely worn (screw edge wear exceeding 2mm), replace it immediately.
Die blockage in small fish feed pellet extruders manifests as interrupted discharge or abnormal pellet formation (uneven pellet size, sudden decrease in discharge). This is often caused by the die orifice being blocked by scorched raw material or impurities, or by the raw material sticking together due to excessively low die temperature. During troubleshooting, remove the die and observe the orifice for blockages. Solution: Clean the blockage inside the die head orifice with a fine wire brush. If there is burnt raw material, soak it in hot water first before cleaning. Check the die head heating device to ensure the temperature is stable at 120-140℃. If the heating device is faulty, it needs to be repaired or replaced. After cleaning, ensure the sealing gasket is intact when reinstalling the die head to prevent raw material leakage.
Preventing blockages in small home use dog food making machines: The key to preventing blockages is proper raw material pretreatment (controlling moisture, screening impurities, and ensuring particle size meets standards) and daily equipment maintenance. It is recommended to test the moisture content of the raw materials with a moisture meter before production and use a vibrating screen to screen impurities. Clean all parts of the extruder promptly after each production run to avoid raw material residue. Regularly check the condition of the screw and die head, and replace worn parts in a timely manner to reduce the occurrence of blockages from the source.
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1. What is the price of the Best home use dog food making machine?
The price ranges from approximately $1,500-$55,000
2. Do you provide maintenance services for your customers?
Yes, we offer comprehensive after-sales maintenance services to our customers.
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