SU1375161A1 - Drill valve mechanism - Google Patents

Abstract

The invention relates to agricultural machinery, in particular, to pneumatic seedlings. The invention makes it possible to improve the quality of seed sowing due to their more uniform distribution in the row, since a valve mechanism consisting of a fixed pipe 16 with an upper 19 and lower 20 orifices and a rotary shaft 17 installed inside it with a passage 18, ensures the seed to fall out of the valve mechanism without delay, the constancy of the length of the horizontal projection of the flight path of the seed from the valve mechanism to the bottom of the groove, the accuracy of the seeds and the low rate of falling of seeds on the soil, which allows to reduce the spread, 1 Cp f-ly, 4 ill.

Description

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The invention relates to pneumatic seals, in particular, to the construction of a valve seeding mechanism, which provides accurate seeding of seeds of vegetable crops and tobacco.

The purpose of the invention is to improve the quality of seed sowing due to their more even distribution in the row.

FIG. Figure 1 shows schematically a pneumatic crop with the proposed valve mechanism; side view; in fig. 2 - valve mechanism in the position of resetting seeds; in fig. 3 - the same, sowing seeds; in fig. 4 - valve mechanism, rear view.

The pneumatic crop contains a frame 1 on which the furrow 2 and the rollers 3 are mounted. The frame 1 is also fixed on the hinges with a bucket 4, above which is placed a sowing apparatus, made in the form of a pipe 5 with pumping nozzles 6 mounted on it at a predetermined interval and having replaceable tips in the form of a half segment with seeds 7.

The pipe 5 of the metering unit is connected by pipeline 8 to the pneumatic system of the crop, made in the form of a pulsator 9, communicated with a vacuum pump 10. Pipe 5 by means of a lever 11 is connected to a Kryvoschipno-rod mechanism 12 of the drive 13. A seeding device, in the zone of ejection of seeds on them, is located this wire 14, under which, at a distance of 2-2.5 cm from the seed groove, a valve mechanism is placed in the form fixed on the frame by means of this wire 14 and elastic shields 15 of pipe 16, covering the rotary shaft 17, while the lower end of the wire is located above the shaft 17. The latter has a passage 18 in the form of a transverse groove located relative to the horizontal plane at an angle greater than the friction angle of the seeds on the groove surface at all shaft positions.

The transverse groove is formed by two adjacent portions, the angle of inclination of the upper one of which is less than the angle of inclination of the lower one.

In the walls of the pipe 16, the upper 19 and lower 20 through holes are made, the passage channel 18 and through holes 19 and 20 being located in the same vertical plane and communicating with this wire 14 passing through the upper through hole 19 of the pipe.

The rotary shaft through the lever system 21 is connected with the cam drive mechanism 13.

The valve with valve mechanism works as follows.

When the spraying machine is put into operation, the torque from the drive, for example an electric motor, is transmitted through a flexible transmission to the furrow forming roller, which provides the translational speed of the spreader movement.

The crank-and-pinch mechanism 12 5 provides for the movement of the nozzles 6 with interchangeable tips of the sowing apparatus into the seed gripping zone in the bucket 4, the pulsator creates an overpressure of air in the pipe 5 and the nozzles 6, ensuring the emission of seeds from the 7

end in this wire.

Seeds through this wire 14 enter the holes 19 of the fixed pipe 16 and are located in the wedge-shaped cavity of the valve mechanism, thus acquiring a zero-5 falling speed.

When the seed moves on a path equal to the seeding step, the lever system 21 and the cam mechanism of the drive 13 rotate the shaft 17, as a result of which the lower opening 20 of the fixed pipe 16 opens on the lower part of the wedge-shaped cavity of the valve mechanism, where In this case, the seeds lying in the wedge-shaped cavity of the kla5 pan mechanism fall out from there under their own weight without delay, with zero initial velocity to the bottom of the sowing groove from a small height of 2-2.5 cm. Availability of the proposed valve mechanism and in the village it provides a dropout

0 seeds without delay the length of the horizontal projection of the flight path of the seeds from the valve mechanism to the bottom of the groove, the accuracy of the seeds falling into the grooves and the insignificant speed of the seeds falling on the ground, which reduces the spread

5 and improves the accuracy of seed distribution, both in terms of area and depth of embedment.

Claims (2)

1. The valve mechanism of the cutter, containing a shaft mounted horizontally on the frame and rotating relative to each other and a tube surrounding it, the shaft having a through passage, and upper and lower through openings are made in the pipe walls, the through passage and through openings are located in the same vertical plane —and communicating with this wire passing through the upper through-hole of the pipe, characterized in that, in order to increase the quality 0 sowing seeds due to their more uniform distribution in the row, the pipe is fixed, the shaft is installed with the possibility of rotation, and the lower end of the wire is located above the shaft, and the shaft passage channel is made in the form of a transverse groove located in relation to the horizontal plane at an angle greater than the friction angle of the seeds over the groove surface for all positions of the shaft. 2. The mechanism according to claim 1, characterized in that the transverse groove is formed by two sopr: v / x: - //// /// // // // WWM FIG. u 20 plots, the angle of inclination of the upper of which is less than the angle of inclination of the lower. u 15, / 7. YU 18 20