Forced feeding structure improves conveying efficiency and breaks through capacity bottlenecks. The Twin Screw Pet Food Extruder uses two interlocking screws as the core conveying components. Compared to the gravity feeding mode of a single-screw extruder, it generates a forced pushing force through the meshing rotation of the screws, stably and evenly feeding the raw materials into the extrusion chamber, avoiding problems such as raw material bridging and feeding interruption. This structure allows for precise control of the feeding speed and can withstand higher raw material filling volumes, significantly increasing the raw material processing capacity per unit time. Taking the same power equipment as an example, a 500kg/hour twin-screw extruder has a 30%-50% higher capacity than a single-screw extruder, and large-scale twin-screw extruder units can exceed 2000kg/hour, fully meeting the large-scale production needs of medium and large-sized feed mills. At the same time, forced feeding ensures that the residence time of the raw materials in the extrusion chamber is uniform, providing a stable foundation for subsequent extrusion processing and avoiding capacity fluctuations caused by uneven feeding.
High-efficiency shearing and energy utilization reduce unit processing costs. The meshing rotation of a twin-screw pet feed extruder not only achieves the conveying function but also generates strong shearing and mixing effects, enabling rapid mixing and heating of raw materials within the extrusion chamber, resulting in more efficient starch gelatinization and protein denaturation. Compared to single-screw extruders that rely on frictional heat generation, twin-screw extruders offer more direct energy transfer, increasing thermal efficiency to over 80% and reducing energy consumption per unit of feed by 15%-20%. Furthermore, the efficient shearing action reduces the precision requirements for raw material pretreatment; some raw materials can have their particle size standards appropriately lowered, indirectly saving energy and time in the pretreatment stage. Strong continuous operation stability is also a key advantage, allowing twin-screw extruders to achieve 24-hour continuous production with a significantly lower downtime for maintenance compared to single-screw equipment, effectively reducing production interruptions and further improving overall processing efficiency.
Capacity adaptation flexibility, balancing large-scale and customized needs. The production capacity of a twin-screw pet pellet making machine can be wide-range adjusted by changing the screw speed and feed rate. This allows it to operate at full capacity to meet large-scale batch production needs, or reduce capacity to adapt to small-batch customized feed processing, avoiding energy waste caused by overutilizing the equipment. For example, a twin-screw extruder with a capacity of 1000 kg/h can have its screw speed reduced from 400 r/min to 250 r/min via a frequency converter, flexibly adjusting the capacity to 500-1000 kg/h to meet the production needs of different batches and types of feed. This capacity flexibility allows the equipment to serve both large-scale standardized production and small-batch processing of high-end customized feed, improving equipment utilization and return on investment.
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