ON THE QUESTION OF SEPARATION OF MILLET SEEDS BY FLIGHT DISTANCE AFTER IMPACT ON AN INCLINED REFLECTIVE SURFACE
Keywords:
Seed, elasticity, mouse, chicken millet, separation, flight range, impactAbstract
The issue of the possibility of separating millet seeds from mouse and chicken millet seeds by flight distance after hitting an inclined reflective surface from mouse and chicken millet seeds was considered. The methods of separating seed mixtures from difficult-to-separate weeds, in particular, millet seeds from mouse and chicken millet, were analyzed. It is noted that millet seeds have similar characteristics of size and aerodynamic properties to the seeds of mouse and chicken millet and therefore are difficult to separate on machines with air sieve trier working bodies, which are currently produced by the industry. It was established that one of the areas of development and improvement of processes and means of separation of millet seeds from mouse and chicken millet seeds, which requires further research, is the area of separation of the mixture according to the elastic properties of its components. It is proposed to separate the mixture of millet seeds, mouse and chicken millet due to the forces of gravity and elastic components of the mixture according to the flight distance of the particles of the mixture after the impact. The obtained dependences of the speed of seed movement on the height of the fall on an inclined surface and the critical speed. The analysis of the obtained dependences shows that when the height of the seed falls on the separating impact surface up to 0.5 m, the differences in the values of the velocities of the millet during the impact do not exceed 5%, so when calculating the aerodynamic resistance of the medium to the seed, it can be neglected. It was found that at lower seed speeds during the impact, the difference in the range of speeds after the impact decreases, which is a positive factor in improving the quality of separation. The analysis of the variation curves of the flight distance after the impact indicates the possibility of cleaning millet seeds from the seeds of the mouse and chicken millet according to the flight distance after the impact on the inclined reflecting surface. Separation by flight distance of the seed mixture of millet and fillers should be carried out according to the elastic properties of technical plywood.
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