Design and efficiency testing of a prototype extruder for Bang Kaew dog food production

Thanwamas Phasinam, T. Incharoen, Chatchawin Nualsri, Dowroong Watcharinrat, K. Phasinam
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Abstract

This research aims to address this issue by designing and fabricating a prototype extruder specifically tailored for producing Bang Kaew dog food. The Bang Kaew dog breed, native to Thailand, poses a challenge for farmers seeking cost-effective dog food production using locally available ingredients. Despite attempts to minimize expenses, the necessity of machinery in pellet formation remains, contributing significantly to production costs. The study comprises two main phases: designing and fabricating the extruder machine and testing its efficiency for Bang Kaew dog food production. The extruder, a single screw machine, measures 380 x 810 x 345 millimeters and operates on 220 volts, consuming 2200 watts of power. After rigorous testing, the optimal extruder speed for Bang Kaew dog food production was found to be 400 rpm, achieving a production capacity of 136.29 kilograms per hour and a maximum efficiency of 74 percent. The produced dog food exhibited a moisture content of 9.01 percent and specific color values (L*=72.18±1.75, a*=2.60±0.22, b*=14.35±0.41). Additionally, the hardness measured 272.82 Newton, and the water activity (aw) was 0.67. Significantly, the physical characteristics of the dog food produced at 400 rpm closely resembled those of commercial dog food. This study showcases the successful development of an efficient extruder machine tailored for Bang Kaew dog food, providing valuable insights for the pet food industry.
Bang Kaew 狗粮生产挤压机原型的设计和效率测试
本研究旨在通过设计和制造专门用于生产 Bang Kaew 狗粮的挤压机原型来解决这一问题。Bang Kaew 犬种原产于泰国,对于使用当地原料生产具有成本效益的狗粮的农民来说是一个挑战。尽管试图最大限度地降低成本,但在颗粒形成过程中仍然需要使用机械,这大大增加了生产成本。这项研究包括两个主要阶段:设计和制造挤压机以及测试其在 Bang Kaew 狗粮生产中的效率。挤压机是一台单螺杆机器,尺寸为 380 x 810 x 345 毫米,工作电压为 220 伏,耗电量为 2200 瓦。经过严格测试,Bang Kaew 狗粮生产的最佳挤压机转速为每分钟 400 转,生产能力为每小时 136.29 公斤,最高效率为 74%。生产出的狗粮水分含量为 9.01%,比色值为(L*=72.18±1.75, a*=2.60±0.22, b*=14.35±0.41)。此外,硬度测量值为 272.82 牛顿,水活性(aw)为 0.67。值得注意的是,在 400 转/分钟条件下生产的狗粮的物理特性与商用狗粮非常相似。这项研究展示了为 Bang Kaew 狗粮量身定制的高效挤压机的成功开发,为宠物食品行业提供了宝贵的启示。
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