The screw material of a small floating fish feed machine is one of the core factors affecting its price. High-quality pet food extruders use 38CrMoAl wear-resistant alloy screws with nitriding treatment, achieving a hardness of HRC60 or higher and a lifespan of 1-2 years. Equipment equipped with this type of screw is 20%-30% more expensive than those made with ordinary materials. Ordinary material screws (such as 45# steel) have low hardness and poor wear resistance, with a lifespan of only 3-6 months. Although the initial price of the equipment is lower (saving approximately 2000-5000 yuan), frequent screw replacements are required later, resulting in higher long-term operating costs. For example, a small mini extruder with an ordinary screw costs approximately 5000-8000 yuan, while a 38CrMoAl screw model costs approximately 8000-10000 yuan. While the difference of 3000-5000 yuan seems significant, it reduces replacement costs and downtime losses.
The accuracy and functionality of the temperature control system also significantly impact the price. The basic floating fish food extruder uses a simple electric heater and thermometer, with a temperature control accuracy of ±5℃, and is priced lower. The upgraded version features an intelligent temperature control system with a digital temperature sensor, an accuracy of ±1℃, and supports zoned temperature control (feeding section, extrusion section, and discharge section), and is priced 3000-8000 yuan higher than the basic version. The high-end version uses PLC intelligent temperature control, allowing preset temperature parameters for different formulas with one-button recall, and is priced an additional 5000-15000 yuan. Temperature control accuracy directly affects the cooking effect and nutrient retention of pet food; for users producing high-end pet food, the additional investment in a high-precision temperature control system is necessary.
The transmission system and level of automation are also factors affecting price. The basic model uses a standard motor and belt drive, which is inexpensive but has average speed stability. The upgraded model uses a high-quality national standard motor and precision reducer, offering more precise speed adjustment, and costs 1000-3000 yuan more. The fully automatic model is equipped with a servo motor and frequency converter, enabling synchronized and precise adjustment of feeding speed, screw speed, and cutter speed, and costs 10000-30000 yuan more than the basic model. Furthermore, the die design of the small floating fish feed pellet machine also affects the price. Quick-change multi-specification dies (supporting 1-8mm apertures) cost 1000-2000 yuan more than fixed dies, but they can adapt to the needs of different pet sizes, improving the equipment's versatility. In summary, upgrades to the extruder configuration are all aimed at improving production stability and feed quality; when purchasing, it is necessary to weigh the configuration against the price based on one's own needs.
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