RU2653602C1 - Precision drill sowing device - Google Patents

Abstract

FIELD: agriculture; machine building.

SUBSTANCE: sowing device of the precision drill contains seed hopper 1, seed disc 2 with conical projections 3 and holes 4, compressor 5, collector 6, seminal duct 7. To the surface of seed disk 2 on the opposite side, where conical projections 3 are installed, hollow casing 8 having circumferential channel 9 inclined to the surface of seed disk 2 and in contact with the conical shape located in upper part 10 is connected. In the central zone, circumferential channel 9 is connected through radial channels 11 and collector 6 with compressor 5 located inside the casing 8.

EFFECT: invention with a relatively simple design will increase the accuracy of dosing seeds of various crops that have a rounded shape.

1 cl, 2 dwg

Description

The present invention is intended for use in the agricultural sector for planting crops.

Known metering apparatus precision seeder [http://www.suttonag.com/SeedAce.html]. The apparatus consists of a seed hopper, a drive drum with seed channels, a seed output device, consisting of two vertical partitions on which the brushes are located. For single-piece selection of seeds from the hopper, this sowing apparatus uses a pneumatic system consisting of a compressor, an accumulator and pipelines.

The disadvantages of this sowing apparatus of the precision seeder include the complexity of the design, low accuracy of seed metering, caused by the possibility of several seeds sticking to the seed channels at the same time. It is also possible the penetration of seeds during operation into the device for removing seeds from the working area between the vertical partitions through the brushes.

Closest to the proposed invention is the sowing apparatus of the precision seeder [RF Patent No. 126556, IPC A02C 7/02. Manual pneumatic precision seeder / Borisovsky M.E., Lebedev A.E., Zaitsev A.I., Shilov A.N. Publ. 04/10/2013, Bull. No. 10], consisting of a seed hopper and a pneumatic sowing device containing a sowing disk with holes, a compressor, a collector, and a seed tube. Conical projections are made on the lateral surface of the sowing disk, in which holes are coaxially drilled, and in the area where the seeds come from the sowing disk, a distribution mechanism is installed with a reciprocating drive through the ratchet mechanism from the sowing disk.

The disadvantages of this sowing apparatus of the precision seeder include the complexity of the design, the likelihood of several seeds being captured by one hole due to the pressure drop and the force pressing the seed against the disk caused by the sticking and sticking of the seeds during operation.

The objective of the invention is the creation of a sowing apparatus for precision seeders, having a simple design and allowing to plant seeds with high accuracy due to the constant pressing force.

This object is achieved by the fact that in the sowing device of the precision seeder, containing a seed hopper, a seed disk with conical protrusions and holes, a compressor, a collector, a seed tube, to the surface of the seed disk on the opposite side where the conical protrusions are installed, a hollow casing having the peripheral part of the annular channel, inclined to the surface of the sowing disk and in contact with the conical-shaped cutter located in the upper part, and connected through the inside the casing are radial channels and a manifold with a compressor.

In FIG. 1 shows a diagram - the sowing apparatus of a precision seeder.

In FIG. 2 shows view A.

The sowing apparatus of the precision seeder contains a seed hopper 1, a sowing disk 2 with conical protrusions 3 and holes 4, a compressor 5, a collector 6, a seed tube 7. To the surface of the sowing disk 2 on the opposite side where the conical protrusions 3 are installed, a hollow casing 8 is attached, having an annular channel 9 in the peripheral part, inclined to the surface of the seed disk and in contact with the cutter 10 of the conical shape located in the upper part, and connected in the central zone through the radial channels 11 located inside the casing and manifold 6 with compressor 5.

The sowing apparatus of the precision seeder works as follows.

The seeds to be sown are loaded into the seed hopper 1. At the beginning of the sowing apparatus, a compressor 5 is turned on, which pumps air through the collector 6 into the internal volume between the surface of the seed disk 2 and the hollow casing 8. In order to equalize the air pressure in this volume, there are radial channels inside the casing 11. The air flow passing from the Central zone of the above volume to the periphery is removed through the annular channel 9. When flowing in radial directions at high speed in the area of the holes 4 creates a vacuum sucking the seeds to the conical protrusions 3. The suction of the seeds to the conical protrusions (seed capture) occurs in the area of the seed hopper 1, then the seeds rise up together with the rotating sowing disk 2.

The process of seed detachment from the conical protrusions 3 occurs in the upper position, above the vas deferens 7, when the upper sections of the annular channel 9 are closed by the cutter 10. In this position, the air velocity in the radial channels decreases, which leads to a sharp decrease in the suction force holding the seeds.

From the vas deferens 7 seeds enter the soil.

The implementation of the annular channel inclined to the surface of the sowing disk allows to reduce the size of the apparatus and to ensure minimal hydraulic resistance.

The proposed metering device for precision seeder with a relatively simple design allows for accurate (piece) metering of seeds of various crops that have a rounded shape.

Claims (1)

A precision seeder sowing apparatus containing a seed hopper, a seed disk with conical protrusions and holes, a compressor, a collector, a seed tube, characterized in that a hollow casing is attached to the surface of the seed disk on the opposite side where the conical protrusions are mounted, having an annular peripheral part a channel inclined to the surface of the sowing disk and in contact with a conical-shaped cutter located in the upper part, while in the central zone the annular channel is connected through internal three casing radial channels and a manifold with compressor.

Images