Research study on optimization of constructive and functional elements of vertical mixers used to obtain mixed fodder
2021
Stroescu, G., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Paun, A., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Voicea, I., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Persu, C., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Matache, A., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania) | Nenciu, F., National Inst. of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest (Romania)
The present paper presents the experimental results obtained in the evaluation of a fodder mixing equipment, testing several types of products. Determinations have been made, depending on several variables (constructive and functional elements, specific weight of the product in the mixture, material moisture, granulation, mixing time, mixing auger speed, number of components, etc.) determining the quality of the mixture based on the calcium carbonate content. The fodder mixer was tested in the following conditions: four constructive variants of feeding auger with diameter d = 220 mm, spiral pitch p = 220, 220, 110 and 165 mm; four construction variants for the diameter of the coil (mixing part) d: 400, 300, 300 and 220 mm; spiral pitch S: 300, 225, 150 and 165 mm; three speeds: 200, 300 and 400 rpm; four mixing times: 3, 6, 9 and 15 minutes; four mixing ratios: 1:40, 1:80, 1:120 and 1: 200. The best results were obtained for the following construction parameters: feeding and mixing auger variant 1 with a diameter of 400 mm and a pitch of 300 mm; the optimum speed of the auger is 300 rpm; the best mixing time is 6 minutes; degree of homogeneity corresponding to the requirements for all mixing ratios between 1:40 and 1:200.
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