FI84686C - Feeder for sowing machine - Google Patents

Description

84686

Seeder feeder

The invention relates to a seed fertilizer feeder which enables the sowing of grains per unit area.

The drills aim to distribute the seeds as precisely as possible to the seedbed. These machines generally use a grooved wheel or a feed roller with pins as a dosing method, which causes the driving force to be measured from a calibrated support wheel. In machines, the feed rate is based on rotational speed and rotational speed. The difficulty with these is the dosing of the desired number of seeds. With the above-mentioned devices, it has to be evaluated according to the weight of the grains. In order to specify the desired number of pieces, in addition to the device according to patent application 85 ^ 902, expensive electronic calculating devices are required. If all the input devices of the machine are equipped with such calculating devices, the price of the machine will be very high. In addition, the feeder must be controlled to calculate the desired number of pieces.

Beet seeders use a variety of individual seed feeders that distribute the seed to the ground at regular intervals. Some of these devices operate under vacuum. Ιο. a stream of air directed at the troubled grabs the seed, which attaches to it by means of a vacuum. Due to the size and shape of the hole, only one seed adheres to it. The suction holes are located on the disc rotated by the support wheel and lift the seeds in the hopper ;;; and drop them into the field. For economic reasons, such equipment cannot be used in cereal seed drills because the amount of grain to be sown is much higher than before.

* The sowing machine feeding device according to the invention, made as described in the characterizing part of the claims, sows the desired number of seeds per unit area. This provides the desired optimum amount of grain for the seedbed, where the grains have a precise distribution in the direction of travel. Such sowing is not possible with modern equipment.

2,84686

The invention will now be described in more detail with reference to the drawing, in which Fig. 1 schematically shows a vertical section of a feeder, Fig. 2 shows a partial vertical section of the feeder in the width direction, Fig. 3 shows a vertical section A small parasite feeds from the working part, Fig. 4 shows a partial enlargement of the rings formed by the suction hole

In the drawing 1 there is a belt 1 of the seed drill, which extends over the entire width of the machine and contains the cereal grains to be sown 2. As shown, the lower part of the seed drill is funnel-shaped in cross section and has a series of bottom openings I o , .jo i. La is bounded by the oblique bottom walls 4 and r> of the feed roll 3 .the pivotally mounted bottom flap 6 located below the large bottom opening 10, the curved top side of which forms a continuation of the bottom ring 4. Between the rear edge of each bottom end 6 and the corresponding bottom edge of the bottom wall, a seed roller 7 is arranged, which is made so that the circumferential suction holes 8 are located for receiving and moving the grains forward. All the seed rollers are fixedly arranged on an overworked, rotating shaft 9, which is a rotating tube and forms an air duct 18. When a vacuum is applied to the air duct 18, air flows therein; through the cavity 16 of the holes 8 and the hole 11. The air flow captures the seeds 2 according to which, with a high probability, only one is attached to each hole 8. When the seed roller V rotates in the direction indicated by the arrow 13, it carries the seed up to the bottom 5. . past, the bottom flap 6 removes the seeds unless they fall to the ground through the seed tubes and Vantaa not shown.

The feed rate is adjusted by changing the rotational speed of the shaft 9. In another embodiment, the feed rate is adjusted by moving the shaft 9 in the direction of the arrows 17, whereby part of the suction holes 8 is covered. Many other control mechanisms occurring by covering the suction holes 8 can be incorporated into the invention. In addition, the feed roller 7 has a groove 12 by means of which any seeds which are not suitable for the suction hole 8 can be fed. In this case, the vacuum is unnecessary and the adjustment of the feed rate takes place by moving the shaft 9 in the direction of the arrow ion Γ /, which is conventional in many known feeders for seed drills.

3 04686

Figure 4 shows a structural application of the feed roll to facilitate its manufacture. A suitable suction groove 8 is formed when the rings 14 are joined together so that the grooves 15a at their edges abut each other. Joining methods are not presented because, in addition to gluing, a wide variety of application options are available. The suction hole 8 can also be made by drilling a hole in the shaft tube 9 ·

Claims (3)

1. Feeder means with which seed (2) is guided from a saddle seat (1) to a feeder roller (7) so that the seed grains adhere to suction heels (8) therein, and when the roller (7) is rotated together with its shaft (9) they follow the grain grains (2) are fixed with the roller until a bottom flap (6) loosens them, characterized in that ρέ the rotary shaft (7) of the feeder rollers (7) is rotatably fixed two or more feeder rollers (7) and this shaft is essentially a rotary tubes forming an air duct (18) through which the suction shaft (8) is subjected to vacuum. Feeder according to claim 1, characterized in that the feeder (7) is provided with grooves (12) for use as a conventional grooved feeder. Feeder device according to claim 1, characterized in that the suction shaft (8) of the feeder roller (7) is formed by joining rings (14) of shark halves (15) at their edges.