Abstract
. The tasks of prototyping using 3D printing are relevant for the needs of the agro-industrial complex, where constant modernization of existing equipment and the development of new designs that increase productivity are required. The printing of structural elements of a liquid ring vacuum pump, which is used in the processing of agricultural raw materials, is considered. Prototypes of structural elements of a single-stage liquid ring vacuum pump were manufactured on a Flying bear ghost 5 3D printer (Fig. 1) using FDM technology.The most optimal set of printing parameters was determined by the method of layer-by-layer deposition modeling. The selected modes provide the required quality indicators of the liquid ring vacuum pump prototype. The following parameters are considered: layer height, extruder nozzle and desktop temperatures, airflow during printing, speed, infill percentage and the need for supports. The analysis of the influence of each of the parameters on the characteristics of the finished product was carried out. It has been established that in order to obtain these structural elements without serious defects with a minimum consumption of material and the shortest printing time, it is necessary: the height of each layer is 0.2 mm; extruder nozzle temperature 230 ºС; desktop temperature 100ºС; print speed 60 mm/s; the percentage of filling the model is 25%. Also, for the best quality of the prototypes, constant airflow was used and supports were used in places where the model has significant protrusions. The manufactured prototypes allow evaluating the design features of the developed liquid ring vacuum pump and conducting simple tests for its performance in order to further eliminate the identified shortcomings of the prefabricated structure.
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