The standard operating procedure for manual loading must follow the principle of "no-load preheating - uniform feeding - dynamic adaptation" to ensure that the loading and operation of the small floating fish feed making machine are coordinated: First, no-load preheating: Start the extruder under no-load operation. Wait until the extrusion chamber temperature rises above 120℃ and the screw speed stabilizes at the set value (usually 250-300 r/min for a single screw) before starting to feed material. This avoids material sticking to the extrusion chamber due to low-temperature loading. Second, uniform feeding: Add the pre-treated material to the feed hopper in batches, controlling the amount fed each time to 1/3-1/2 of the feed hopper's volume. Gently move the material with a tool to prevent bridging and blockage at the feed inlet. Simultaneously observe the feeding speed and screw operation status, maintaining a match between the feeding speed and the screw processing speed. Avoid feeding too quickly, which could overload the equipment, or feeding too slowly, which could cause the screw to idle and wear. The third step is dynamic adjustment. During the loading process, continuously observe the extruder's output status. If the output is uniform and the degree of expansion is stable, the loading speed is appropriate. If intermittent output or abnormal noise occurs, immediately reduce the feed rate and gradually adjust it after the equipment stabilizes. After production is completed, stop feeding first and let the extruder run unloaded for 5 minutes to process any remaining raw materials in the extrusion chamber. Then stop the machine and clean the feed hopper and conveying pipes.
Core techniques and safety regulations for manual loading. In terms of techniques, firstly, control the feeding rhythm by using a "small amount, multiple times" approach to avoid feeding too much at once, especially for high-fiber, high-moisture raw materials, where the feeding speed should be slowed down to allow the screw sufficient processing time. Secondly, prevent clogging by applying a thin layer of food-grade lubricating oil to the inner wall of the feed hopper to reduce material adhesion. Also, prepare a wooden material-pulling rod to gently clear any bridging issues; do not use metal tools to avoid scratching the feed inlet and conveyor screw. Thirdly, adapt to the characteristics of the raw materials. When processing powdery raw materials, the feeding frequency can be appropriately increased; when processing granular pre-treated raw materials, the single feeding amount can be increased to ensure loading efficiency. Regarding safety regulations, wear protective gloves and goggles during loading to avoid inhaling raw material dust and being burned by high-temperature parts. Do not put your hands into the feed hopper or conveyor pipes while the small fish feed maker machine is running; if cleaning is required, stop the machine and disconnect the power first. Keep the loading area clean to avoid material accumulation and prevent slipping and falls.
Common problems and solutions for manual loading. Precise handling of high-frequency problems to ensure smooth production: First, raw material bridging blocking the feed inlet, manifested as feeding interruption and the extruder running idle. The solution is to immediately stop the machine, use a wooden material-pulling rod to clear the blockage, and check the moisture content of the raw material (excessive moisture content easily leads to bridging). Dry the raw material appropriately before reloading. Second, uneven feeding causing fluctuations in the output particle size and high breakage rate. The solution is to adjust the feeding rhythm to maintain uniform feeding, and observe the screw speed. If the speed fluctuates, stabilize the equipment parameters first. Third, raw material leakage, manifested as leakage at the feed inlet and pipe connections. The solution is to stop the machine, tighten the bolts at the connections, check if the seals are aging, replace the seals if necessary, and control the feeding amount to avoid overloading the feed hopper.
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