SU1547734A1 - Pneumatic seeding apparatus - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery, pneumatic sowing machines for sowing small seeds. The purpose of the invention is to improve the quality of single-grain seeding of small seeds by reducing the disk beating. Pneumatic metering device contains a hopper 1, a seed chamber 2, a housing 3 with a vacuum chamber 4 and a landing slot 5, agitator 6 seeds, a two-stage seed disc 7 with a cylindrical part 8, cells 9 opened along the contour, communicated by a groove 10 with a vacuum chamber 4 and bottom seed resetter The cylindrical part of the disk 7 with a smaller diameter enters the landing slot 5 of the chamber 4. Seeds from the hopper 1 enter the seed chamber 2, stick to the cells 9 and are transported to the seed drop zone where they fall into the vomer under its own weight. Due to the conjugation of the cylindrical part of the disk 7 with a smaller diameter with the landing slot 5, the disc runout is reduced, which makes it possible to better discard excess seeds and hold the main ones. 4 il.

Description

The invention relates to agricultural machinery industry and can be used in pneumatic plants for precise sowing of small seeds of herbs and vegetable crops.

The purpose of the invention is to improve the quality of single-grain seeding of small seeds by reducing the disk beating.

FIG. 1 shows a sowing unit, a longitudinal-vertical section; in fig. 2 shows section A-A in FIG. one; in fig. 3 and 4 - a fragment of the periphery of the sowing disc, mated with the housing pocket of the vacuum chamber.

The pneumatic sowing unit contains a seed bunker 1, a seed chamber 2, a housing 3 with a vacuum chamber 4 and a landing nest 5 on its outer wall, a turner 6, a two-stage sowing disc 7 with a cylindrical part 8 with open cells along the contour camera 4 groove 10, and a sprinkler 11 extra seeds.

The cylindrical part of the disk 7 with a smaller diameter is included in the landing slot 5 of the chamber 4.

The landing slot 5 of the housing 3 of the vacuum chamber 4 has a length equal to the length of the vacuum chamber. Between the ends of the vacuum chamber, the nest 5 is opened in the housing 3, in its lower part, with a groove in the form of a part of the ring sector for self-cleaning 30 cells, each of which is connected to the slots of cells 9 and the grooves 10 from weeds. The dumper 11 extra seeds n - fork with elastic pins.

Pneumatic sowing apparatus operates as follows.

Seeds from bunker 1 enter the seed 35 as a two-stage one, and its periphery chamber 2, where the agitator b brings a cylindrical part with a smaller

with in motion. The cells 9 of the sowing diameter are covered by the outer wall of the vacuum disk 7 by means of the slots 10 are communicated with a smart camera.

a groove filled with a disk with a vacuum chamber, a seed agitator, characterized in that, in order to improve the quality of single-grain sowing of small seeds by reducing the beating of the disc,

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with a vacuum chamber 4, whereby seeds are sucked onto them. The sucked seeds are transported in the direction of rotation of the seed disc 7 to the end 5 of the vacuum chamber. In this way, the cells pass between the ends of the dropper 11 extra seeds. The excess seeds are returned to the seed chamber 2, and the remaining ones, one in each cell 9, are transported to the end of the vacuum chamber. Here the cells communicate with the atmosphere and the seeds fall into the vomer under its own weight. The cells 9 are then re-inserted into the seed chamber, and the process is repeated many times.

Such an apparatus eliminates the possibility of a sowing disc tilting, eliminates its beating and allows for very small excess seeds to be dropped with a fork release device.

Claims (1)

Invention Formula A pneumatic sowing unit containing a bunker, a seed chamber, a housing with a vacuum chamber and a 5-slot groove in its lower part in the seed zone as part of an annular sector, mounted between the seed and vacuum chambers on a horizontal shaft, the seed disc with evenly spaced around its periphery open circuit 0 cells, each of which is communicated with you, is made in two stages, and its periphery is cylindrical with a smaller a groove filled with a disk with a vacuum chamber, a seed agitator, characterized in that, in order to improve the quality of single-grain sowing of small seeds by reducing the beating of the disc, Fig.Z phi.1 FIG.