THE ANALYSIS OF THE WORKINQ UIRING PROCESS OF THE SOWING APPARATUS FOR NON-TRIABLE FEEDINQ CROPS

Abstract

The stages of the technological process of sowing the seeds of the proposed sowing apparatus are as follows. Proceeding from the experimental data we have established that inside the vessel above the hole from which the seeds flow a canopy is formed, which has the form of a paraboloid, and we have installed a blower to destroy the canopy. The height of the blower is determined from the expression (1), which determines the height of the canopy of seeds. When the height of the blower is equal to the height of the canopy of the seeds, the formation of the canopy is excluded. The movement of seeds inside the feeding cylindrical pipe to the distribution cone takes place under the action of the shovels, which move seeds down and from the center to the periphery of the cage. Using the given velocity of the seed along the shovel, the expressions (4), (5), (6), we establish the necessary technological
and design parameters of the shovel. The next stage is the movement of seeds by a distributing cone along the periphery of the casing. From the analysis of the expression (7) describing the relative velocity of grain motion along the cone, it should be concluded that the angle of ascent of the helical helix α of the cone should not exceed 170 and its radius should be within 0.02 m. From the distributing cone, the seeds are gripped by turns of a helical spiral and moved to the distributor head. The screw spiral evenly distributes the flow of seeds on its surface and transports them to the periphery, in the direction of the sleeves. The motion of the seeds along a helix is described by equation (2) and the screw parameters should be set using it. The design dimensions of the distribution head are adopted taking into account the screw dimensions and friction coefficient of non-friable seeds in steel.
The movement of seeds in the distribution head and along the sleeves is analogous to the motion of particles along the inclined plane, and the expressions obtained in this article are not given, since they are fairly well known. Thus, the theoretical dependences of the movement of seeds at various stages in the proposed sowing apparatus were obtained by using it the necessary
technological and design parameters of the apparatus ensuring high quality seeding of non-friable grass seeds are established. To check the correctness of the selection of the parameters of the sowing apparatus, it is necessary to carry out extensive laboratory and field studies.