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The object of research is the process of centrifugal disk pneumomechanical apparatus for smooth application of mineral fertilizers and their mixtures on the field surface. When mineral fertilizers or their mixtures are sown in the field, the process of separation of grains into fractions is observed. This process takes place after they are thrown from the apparatus, that is, in space motion. This means that the quality control of mineral fertilizers is a factor independent of the technological process of the centrifugal disk apparatus. A pneumatic-mechanical hardware scheme was developed using the method of analysis of technological processes of centrifugal devices in existing and patent information materials and the combination of structural elements for high-quality spraying of fertilizer mixtures in them. The pneumomechanical apparatus consists of a horizontal disc with a diameter of 600 mm, 4 logarithmic coil-shaped blades on the disc, and 4 additional air-generating devices under each disc under the disc. The centrifugal pneumomechanical device has two functions at the same time, the first is to spray mineral fertilizers, and the second is to create an additional air flow and direct it behind the discarded fertilizer grains, which ensures even spraying of component fertilizers of different sizes, shapes and densities.

Technological working process of the centrifugal pneumatic apparatus for spraying mineral fertilizers and their mixtures