FI79441C - ANORDNING FOER ATT SAO FROEN UR ETT KAERL. - Google Patents

Description

1 79441

Device for sowing seeds from a container. - Anordning för att sa frön ur ett Kari.

The invention relates to a device for sowing seeds from a container to the ground or to growing peat briquettes so that a predetermined number of seeds are sown during each period of operation of the device, the device comprising - a seed picker suction nozzles.

In connection with seed drills, it is generally known to use a vacuum to grip the seeds to the suction nozzles, so that a predetermined amount of seeds can be lifted from the container.

For example, in the solution known from FI patent publication 45714, the seeds are dropped directly from the seed picker into the ground, which requires mechanical movement of the seed picker by a separate drive between the picking position and the dripping position. This results in a complex and expensive structure, which, however, is limited in scope to a particular application.

So far, there has been no lack of a seed drill that is simple in structure, relatively inexpensive, and also versatile in its applications.

The invention solves this shortcoming with a sowing device, the characteristic features of which are set out in the appended claims.

In the following, an embodiment of the invention will be described in more detail with reference to the accompanying drawing, which shows the device according to the invention in a side view and in partial vertical section.

The seed guide 1 belonging to the device forms a trunk tube to which the other parts of the device are attached. Attached to the lower end of the vacuum compressed bellows 2 is a tube 4 which, together with the suction nozzle 5, forms a seed picker. A vacuum is applied to the inside of the bellows 2 and the pipe 4 by means of the holes 13 in the suction pipe 3.

Near the lower end of the tube 4 there is an intermediate flange 10 with a hole 11. The lower end of the tube 4 is closed by a plug 18 through which the thin nozzle tubes 5 can be inserted. As the nozzle tubes 5, for example, truncated syringe needles can be used. There is a small cavity between the flange 10 and the plug 18.

A plug 12 is placed at the lower end of the suction tube 3, the position of which is chosen so as to close the hole 11 when the seed picker 4 is raised to the seed dripping position. At the same time, the plug 12 can act as a response which determines the lifting height of the seed picker 4. The tube forming the seed picker 4 can slide in the sleeve 19.

The seed guide is mounted for pivoting on the shaft 7 and a rubber band 8 pulls the seed picker 6 against the tube 4.

When the pump 15 introduces a vacuum through the suction pipe 3 into the bellows 2 and inside the pipe 4, the bellows 2 begins to compress and lift the pipe 4. At the same time, sufficient suction is created in the nozzle 5, to which one seed adheres. There may be one or more nozzles 5 in one seed picker 4 and in the same device. . be a plurality of parallel seed pickers 4. When the plug 12 impinges on the flange 10 and closes the hole 11, the vacuum in the cavity between the flange 10 and the plug 18 disappears, causing the seed to fall. Before that, the seed guide 6 has turned to the position shown by the dotted line, where it guides the falling seed from the opening 17 into the seed guide formed by the body tube 1.

Instead of the plug 12 and the flange 10 with the hole 11, an arrangement can also be used to remove the seed, in which the pipe 4 is brought into its upper position (e.g. by a slight friction) until the vacuum from the pipe 4 during. Regardless of which option the seed dripping is carried out with, during the return movement of the tube 4, overpressure can be used to blow out the nozzle 5 from possible debris.

Attached to the body tube 1 is a support ring 16 on which the device rests on the seeds in the seed container 9. The location of the support ring 16 is chosen so that the lower end of the seed picker 4 in the picking position is slightly below the support ring 16. In this case, the seed container 9 can be very high and thus large in volume. The appliance lowers automatically as the container sinks.

The seed drill shown can be used, for example, as an accessory for forestry harrows and pruners. In this case, the pump 15 can be driven by an electric motor 16. In a seed drill for garden use, a hand-operated pump or bellows can be used to alternately generate underpressure and overpressure.

Claims (10)

1. Device for sowing seeds from a kari (9) in the soil or in fabricable plant peat briquettes, such that with the device is affixed for each working period a predetermined number of seeds, to which the device belongs - one with rainst a suction nozzle (5) seed picker (4), - means for moving the seed picker (4) between a seed locking position and one drop position and - means for forming suppression in the suction nozzle (5) of the seed locker (4), characterized in that the seed picker (4) is attached to pneumatic transfer means (2) arranged to lift the seed picker (4) from picking position to drip position pneumatically with sarana suction air, whereby the seeds are brought into engagement in an opening in the suction nozzle (5). (4) adjust to drip position, a seed guide (6) is arranged to move below the seeds intended for drip to seed control position, in which the seed guide (6) slopes against a seed line (1) for controlling the seeds to be is dropped to the seed conduit (1). Device according to claim 1, characterized in that the suppressing means is a bellows or a pump (.15). Device according to claim 1 or 2, characterized in that the seed picker (4) is placed as an extension to the compressible bellows (2). Device according to any one of claims .1-3, characterized in that the seed picker (4) is a tube and: the suction nozzles are thin tubes (5), such as e.g. cut-off syringe nails, which can be pierced through the lower end of the seed picker (4) (18).