RU1819506C - Vacuum pulser for pneumatic disk sowing assembly with suction holes - Google Patents

Abstract

The invention relates to agricultural machinery and can be used in precision sowing plants for row crops. The aim of the invention is to increase the versatility and reliability of the pulsator. In order to achieve this, in the sealing gasket 1, the rarefaction pulsator located in the reflection zone of the extra seeds contains an insert made in the form of two annular sectors located symmetrically relative to the radial secant plane and adjacent to each other 4. Each sector 4 has jumpers 5 and through grooves 6. The jumpers 5 have different widths and the width of the extreme, narrowest bridge of sector 4 is smaller than the radius of the suction hole, and the width of the other extreme, widest is larger than the narrowest by the radius of the suction holes. Sectors 4 can be interconnected both from the side of the narrowest and from the side of the widest extreme jumpers 5. This embodiment of the rarefaction pulsator allows mutual exchange of sectors 4 and is used coaxially for pneumatic cells made in the form of suction holes located on the disk with suction holes of a larger diameter, where the latter are partially shielded by jumpers 5, as well as for slotted pneumo-mechanical cells, the through cutouts of which are fully shielded In the case of suction holes, they communicate with the vacuum chamber through the suction slot. 2 s. P. f-ly, 5 ill. 1 00 CE ate about

Description

The invention relates to agricultural machinery, in particular to single-grain pneumatic sowing machines, and can be used in precision sowing plants for row crops

The purpose of the invention is to increase the versatility and reliability of the pulsator. In FIG. 1 shows a gasket with a rarefaction pulsator; Fig. 2 shows an embodiment of a rarefaction pulsator in a gasket for pneumatic cells; in FIG. 3 shows an installation option for slotted pneumomechanical cells; in FIG. 4 is a section AA in FIG. 2; in FIG. 5 - Section BB in FIG. 3.

... The rarefaction pulsator installed in the sealing gasket 1 with holes Z and an annular cutout 3 contains an insert consisting of two symmetrical sectors 4 connected with each other, annular sections 4 with jumpers 5 and through grooves 6 The jumpers in each sector have different widths. And the width of the extreme, narrowest bridge of the sector is smaller than the radius of the suction hole, and the width of the other extreme, widest, larger than the narrowest by the radius of these holes. This embodiment of the pulsator allows mutual, rearrangement of sectors 4 with jumpers 5 and grooves 6 and use it as for pneumatic cells (Fig. 2 and 4), made in the form of through suction holes 7 of a closed circuit, coaxially located on the metering disk 8 with suction holes 9 with a larger diameter, as well as for slotted pneumomechanical cells (FIGS. 3 and 5), through cuts 10 of which are made on the periphery of the lining 11. having a continuous chamfer 12 from the side of the seed chamber, through the suction slot 13, annuyu gasket 14 between cover plate 11 and the base 15 of the seed disc and the unshielded portion is sucked holes 9 communicate with the vacuum chamber (not shown).

For pneumatic cells (Fig. 2), an extra seed ejector is used, both pins 16 of which are located in the range of the widest jumpers 5 of the rarefaction pulsator. For pneumomechanical cells (Fig. 3) a ejector 17 is used, which removes excess seeds from the periphery of the lining 11 at the point where the widest jumpers 5 of sectors 4 of the rarefaction pulsator are paired.

Rarefaction pulsator for pneumatic disc sowing machines with

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suction holes works as follows.

During rotation of the sowing disk 8, the seeds are sucked in the capture zone and to the cells under the influence of the vacuum transmitted through the suction holes 9. In the discharge zone / 3, the rarefaction pulsator, lowering and constantly changing the suction force, contributes to the extra seeds that are sucked from the side, top or bottom to cell, spontaneously or forcibly easily and without injury, to tear from the disc 8 and return back to the seed chamber. For seeds centered on the cells and under favorable suction conditions, the vacuum generated by the vacuum pulsator is sufficient to be held in the cells, so they enter the transportation zone after passing through the discharge zone and are discharged into the coulter (not shown} and further into the furrow.

When using pneumatic cells, it is unacceptable to completely screen the suction openings 9, therefore, before starting the sector 4, the rarefaction pulsators are installed in such a way (Fig. 3) that the narrowest extreme jumpers 5 are facing each other, forming a single jumper whose width, like all others jumpers, around the circumference of the center of the suction holes 9 is smaller than the diameter of these holes. As a result of this, the other extreme jumpers 5 having the widest width are located in the area of action of the pins 16 of the seed spreader, therefore during transportation the excess seeds, which are briefly in adverse conditions of suction to the cells, spontaneously or forcibly return to the seed chamber apparatus.

When using slotted pneumomechanical cells (Figs. 3 and 5), short-term screening of the suction holes 9 is permissible, since the seeds located in the inner cavity of the through cut-outs 10, whose shape and size correspond to the shape and size of the seeds, are reliably held by the vacuum that spreads along the circular suction slit 13, and the excess seeds sucked to the gap between the cutouts 10 and in the plane of the chamfer 12, spontaneously or forcibly with the help of the ejector 17 are returned to the seed chamber y. Therefore, sectors 4 are set in this way (Fig. 3),

so that their extreme, widest jumpers 5 are facing each other and form in the zone of action of the ejector 17 a single bridge that completely covers the suction openings 9.

For sowing seeds of various crops, sectors 4 are used with corresponding parameters of jumpers 5 and through grooves 6.

The positive effect of the invention is achieved by increasing the versatility of the pulsator and the efficiency of the process of reflection of excess seeds, as a result of which the number of single-grain feeds increases and the seed consumption is reduced. A uniform single-grain distribution of seeds on the field provides an optimal nutritional area for plants, which helps to increase yield.

Claims (3)

SUMMARY OF THE INVENTION 1. Rarefaction Pulsator for Pneumatic Disc Meters with suction holes, containing a plate insert with through grooves and jumpers between them, and with the fact that, in order to increase the versatility and reliability of the pulsator, the insert is made in the form of a symmetrically arranged radial secant plane and two ring sectors adjacent to each other, while the jumpers in each sector have different widths and widths of the extreme, narrowest, the jumpers of the sector are smaller than the radius of the suction hole, and the width of the other extreme, widest, is larger ama 5 narrow by the size of the radius of these holes. 2. The pulsator according to claim 1, with the fact that the sectors are conjugated to each other from the side of the narrowest extreme jumpers. 0 3. The pulsator according to claim 1, with the fact that the sectors are conjugated to each other from the side of the widest extreme jumpers. FigA