RU32961U1 - Inclined disk metering unit for pelleted seeds - Google Patents

Description

TILT DISC SOWING UNIT FOR DRILLED SEEDS

The utility model relates to agricultural engineering, in particular to apparatus for the precise sowing of seeds of cultivated cultivated crops.

Known sowing apparatus inclined-disk type, containing housing, a hopper for seeds and two disks - bucket, or metering, and chamber, or sowing. These machines are installed on Maxicom seeders (Austria) Gyula Kerekesh. Modern sowing machines. The mechanization and electrification of socialist agriculture. - No. 4, 1981, p. 60-62 and S-12 A, manufactured by the Voronezh Joint-Stock Aircraft Building Company OJSC VASO S-12A seeder. Voronezh Joint-Stock Aircraft Manufacturing; JSC VASO. Flyer. Voronezh, 2000. This device is used for precision sowing of large-seeded row crops. Its positive quality is self-shedding of excess seeds from buckets or cells, and its disk without damage. Another positive quality is the separation into two discs of the functions of dosing, or selecting seeds, and their ejection from the apparatus, which makes it impossible to carry out the selection of seeds and their ejection at different speeds and thus improve the distribution of seeds along the furrow.

The disadvantages of this sowing; its apparatus is a large percentage of damage to small seeds, such as sugar beets, virtually eliminating the possibility of sowing them, and excessive sowing compared to a given norm. Damage to the seeds occurs when the buckets of the metering disk slide along the fixed chamber. And the shape of the buckets and the gap between them and the wall lead to jamming of the seeds. Excessive seeding occurs because of that.

 J 0 &

MKI A01C7 / 04

(5

that at higher speeds of rotation of the sowing disk, the seeds are ejected not only by the buckets, but also by the radially located rays of the disk, at the ends of which the buckets are located. In addition, there is also a gap between the beams and the fixed wall of the chamber, in which small seeds can jam. The metering and sowing discs have the same diameter, i.e. the prototype does not use the ability to throw seeds at a faster rate than the dosing rate, which would lead to a more uniform distribution in the furrow due to a more complete compensation for the speed of the seeder and the absence of bounces and rolling when falling into the furrow.

The technical result from the use of the utility model is that the seeds do not get stuck and are not damaged, reliable filling of the cells occurs even at an increased rotation speed of the metering disk, there is no excess ejection of seeds from the seed, and the uniformity of their placement in the furrow improves.

The technical result is achieved in that in an inclined disk sowing apparatus comprising a housing, a seed hopper, metering with cells and metering discs, the metering disc is made flat with a diameter smaller than that of the metering disc, and the cells are made in the form of through semi-cylindrical recesses perpendicular to the base disk, while the bottom of the hopper is made in the form of a nolucylinder, the lower part of which covers the outer surface of the metering disk.

Figure 1 shows a General view of the proposed inclined disk sowing, figure 2 - view a of figure 1.

The device has an input window 7, and in the case there is a passage window 8 and a sowing window 9.

When the apparatus is operating, the seeds from the hopper 2 through the input window 7 pass until they come into contact with the rotating metering disk 3, fill its cells 4 piece by piece and rise along with them to the upper part of the rotation path, where they drop through the passage window 8 to the sowing disk 5. This disk is divided into sectors by the number of cells of the metering disk, rotates synchronously with it and transports the seeds that have fallen onto it in pieces in each sector to the lower zone of the rotation path, where it throws seeds into the furrow through the sowing window 9. Lack of radially the irradiated rays on the metering disk and its smooth surface exclude jamming of even small seeds and raise the extra seeds to the level of the passage window 8, as these extra seeds freely slide down the smooth surface of the disk. The semi-cylindrical shape of the through cells 4 with the perpendicular arrangement of the inner walls to the plane of the metering disk does not press the seeds to the casing when they slip and does not damage them. The annular insert 6 contributes to the accurate supply of seeds to the trajectory of the cells in the direction of their axial lines and reduces the diameter of the metering disk in relation to the diameter of the seed disk, i.e. dosing speed is less than the rate of ejection into the furrow. This circumstance improves the filling of the cells during dosing, especially in the case of the use of pelleted seeds, and increases the speed of ejection into the furrow towards the movement of the seeder, which reduces the rebound and rolling of the seeds in the furrow, i.e., contributes to a more accurate placement of them in the soil.

significantly exceeding the quality indicators of the prototype and even such a common model as the SST-12 B seeder: when sowing coated sugar beet seeds, a metering speed of 1.3 m / s was achieved with a cell filling ratio of 99.2%, while the number of damaged seeds did not exceed 0 , 7%.

Thus, a useful model of the sowing apparatus improves the quality of piecewise dosing and distribution of seeds along the furrow without noticeable complication of its design.

Claims (1)

Inclined disk metering device, mainly for coated seeds, comprising a housing, a seed hopper, metering with cells and metering discs, characterized in that the metering disk is made continuous with a diameter smaller than that of the metering disk, and the cells are made in the form of through semi-cylindrical recesses perpendicular to the base of the disk, while the bottom of the hopper is made in the form of a half cylinder, the lower part of which covers the outer surface of the metering disk.