FI72250B - I FOLLOWING THE PROCEDURE - Google Patents

Description

1 72250

The present invention relates to a pickling device arranged in the seed hopper of a drill, consisting of pickling containers located in the seed hopper,

10 According to several studies, pickling cereals and other useful crops can effectively control various plant diseases and / or pests and thus improve both the quantity and quality of the crop. Similarly, pickling has been found to improve the germination and budding, especially of weak seeds of cereals.

Usually, dry or liquid pickling is performed as a separate work step in connection with seed restoration, either immediately after sorting or only after intermediate storage. In this case, the seed has to be treated several times, which can reduce germination. In addition, pickled seed has to be stored and preserved. Because pickling agents are toxins, pickled grains must be kept separate from other grains.

These disadvantages have been eliminated by the seed drill according to U.S. Pat. No. 25,037,759, in which pickling is carried out in connection with sowing. A pickling container is placed in the seed hopper of the drill above each feed opening, from which the pickling agent is distributed by means of a feeding device among the seeds flowing towards the feed openings in the seed hopper. Between the pickling agent supply devices and the supply openings, a longitudinally extending mixing device is arranged, formed by fingers mounted on a longitudinal rotating axis, by means of which the pickling agent is mixed into the seed lot. However, practical experiments have shown that the mixing device is not able to mix the pickling agent evenly with the seeds, but that some seeds 2 72250 remain completely without pickling agent while other seeds receive too much of it.

The object of the present invention is to provide a pickling device placed in the seed hopper of a drill, by means of which the pickling agent is mixed more evenly with the seeds. The mirroring device according to the invention is characterized in that each mixing device is located in a mixing chamber extending from the bottom of the seed hopper at least to the level of the upper part of the mixing device. Surrounding the mixing devices with open-air mixing chambers is forced to drain the seeds through mixing devices, which in turn are located below the pickling agent feeders. This ensures that seed which has flowed downwards between the pickling agent feeders and then moved longitudinally along the bottom of the seed hopper and is therefore left uncovered does not enter the seed hopper feed openings.

The control effect of the mixing chamber is particularly effective if the chamber is formed by a pickling agent supply device 20 from a tube extending to the bottom of the seed hopper, the side walls of which have openings in the portion between the pickling agent supplying device and the mixing device. The openings can then be used to precisely control the flow of seeds. In addition, it has been found that the free fall of the pickling agent onto the seeds flowing inside the tube is more advantageous for uniform mixing of the pickling agent than if the seed stream is in direct contact with the pickling agent feeder.

A preferred embodiment is characterized in that the mixing chamber tube is rectangular in cross-section and that there is an opening on each side, the part of the wall above which is bent obliquely inwards and downwards. The rectangular cross-section of the mixing chamber allows the mixing device to act over the entire cross-sectional area of the mixing chamber tube, which is advantageous for mixing. The oblique portion of the wall promotes the flow of seeds into the mixing chamber.

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In its simplest form, the moth chamber can be made in such a way that the mixing chamber is formed by two walls transverse to the longitudinal direction of the seed hopper. The obliquely upwardly rising walls of the seed hopper then form the front and rear walls of the mixing chamber. This embodiment is very inexpensive to manufacture, but nevertheless decisively improves the mixing efficiency compared to a seed container which is open along its entire length.

One preferred embodiment of the pickling device according to the invention will now be described in more detail with reference to the accompanying drawing, in which Fig. 1 shows a longitudinal section of the lower part of the seed hopper of the drill, and Fig. 2 shows a cross section of the lower part of the seed hopper.

At the bottom of the seed hopper 1 of the drill there is a row of feed openings 2 with rotating feed rollers 3. Below each feed opening there is a seed tube 4, usually one or two for each row of seed.

Inside the seed container 1, directly above each feed opening 2 20, there is a pickling agent container 5, below which is a pickling agent supply device 6. This feeding device is shaped according to the properties of the pickling agent. For example, the powdered pickling agent can be dispensed with the toothed roller device of the figures, while with the liquid pickling agent, dispensing tubes and nozzles are placed in place of the roller device. Between each pickling agent supply device 6 and the seed hopper supply opening 2 there is a mixing device 7, which ensures the flow of difficult-to-flow seeds and the mixing of the pickling agent 30 with the seeds.

According to the invention, a vertical tubular mixing chamber 8 is arranged at each feed opening 2 of the seed hopper. The mixing chamber is connected at its lower end to the seed hopper at the edges of the feed opening, so that the seeds enter the feed openings only through the mixing chambers 8.

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The mixing devices 7 are located at the bottom of the mixing chambers and above the mixing device the chambers have four openings 9, one on each side of the mixing chamber of rectangular cross-section. The mixing chamber extends above the openings 59 to the pickling agent supply device 6. The wall portion 10 above the openings 9 is bent obliquely downwards and inwards.

The invention directs the seed flow from the seed hopper 1 to the feed openings 2 of the drill through the mixing chambers 8 10 and thus provides efficient mixing of the pickling agent with the seeds in a confined space, since all the seeds have to pass through the mixing chambers.

Contrary to the above, each mixing chamber can be formed by two partitions arranged transversely to the seed hopper, which correspond to the side walls of the mixing chamber perpendicular to the plane of the drawing in Fig. 1. However, these partitions preferably only reach the level of the lower edge of the openings 9. The mixing chamber tube may, of course, have a different cross-sectional shape than that described above.

Claims (4)

5,72250 A pickling device arranged in the seed hopper of a drill, comprising pickling tanks (5) in the seed hopper (1), below them, at the seed hopper feed openings (2) in the pickling medium feeders (6) and in each pickling medium feeder. of mixing devices (7), characterized in that each mixing device (7) is located in a mixing chamber (8) extending from the bottom of the seed hopper (1) at least to the level of the upper part of the mixing device. Pickling device according to Claim 1, characterized in that the mixing chamber is formed by a pickling agent supply device (6) from a tube (8) extending to the bottom of the seed hopper, the side walls of which have openings (9) between the pickling agent supply device (6) and the mixing device (7). Pickling device according to Claim 2, characterized in that the mixing chamber tube (8) is rectangular in cross section and has an opening (9) on each side, above which the wall section (10) is bent obliquely inwards and downwards. Pickling device according to Claim 1, characterized in that the mixing chamber is formed by two walls which are transverse to the longitudinal direction of the seed hopper.