| 摘要 |
FIELD: agriculture.SUBSTANCE: machine for grinding seeds comprises a grinding drum, which inner surface is coated with a layer of rubber, with the discharge window, a working element, a measuring hopper, an unloading tray. The grinding drum is made in the form of a container which is elastically mounted on the base with a vibrator and mounted of three rectangular strips. The strips are alternately bent in opposite directions at an angle of 140° on the notches formed at an angle of 60° to each other and to the longitudinal edges of the strips to form the equilateral triangles along the strip length. The triangles alternately located in opposite directions. At that the strips are connected to one another along the longitudinal edges at an angle of 70° to form along the inner perimeter three polygonal curved helical surfaces and three polygonal helical grooves of the main direction to move the seeds from loading to unloading, and two polygonal curved helical surfaces and two helical grooves of the opposite direction for seeds from unloading to loading. Along the outer diameter of the container three polygonal helical lines are formed of the main direction with the pitch S and two polygonal helical lines of opposite direction with the pitch of 0.25 S, at the break points of the helical lines. At these points there are places of convergence of the sides of six equilateral triangles. The working element is made in the form of a coil spring coated with a layer of rubber, mounted inside the container and equipped with a device for changing the pitch of turns by its stretching or compressing.EFFECT: machine has advanced technological capabilities, simplified construction and improved performance.15 dwg |
