RU154782U1 - PNEUMATIC SOWING UNIT FOR COMBINED SEEDING - Google Patents

Abstract

Pneumatic sowing device for combined sowing, consisting of a seed hopper divided by a partition, a vertically located sowing disk with through conical cells, mounted on an axis, an air nozzle, an ejector seed and side walls, characterized in that the sowing disk is made double, the parts of which are rigidly fixed to each other moreover, on the lateral surface of the conical cell against each other at 3/4 of its depth two through holes are made at an acute angle to the base of the cell, and on the inside the surface of each part of the disk under the conical cells has a groove for the ejector made in the form of an elastic elastic roller fixed to the lower part of the side wall.

Description

The utility model relates to agricultural engineering, in particular to pneumatic sowing machines used in seeders, mainly for combined sowing of two crops.

Known pneumatic sowing apparatus, including a hopper for seeds, a sowing disk with through holes and a nozzle for supplying air to the cells, the sowing disk is equipped with a ring mating with its inner surface, which is mounted with the possibility of longitudinal movement relative to the axis of rotation of the disk, and is made in the form of a cylinder , along the length of the generatrix of which there are several rows of through cells. (USSR author's certificate, 818524, IPC A01C 7 / 04.1981)

The disadvantages of the known sowing apparatus are:

a) The sowing apparatus is used only for nesting and does not allow sowing at the same time two different cultures in a binary way;

b) during the removal of excess seeds from the cells with a nozzle, there is no guarantee that all seeds will not be removed by air flow, which is not permissible.

The closest in technical essence to the claimed device is a pneumatic sowing device selected as a prototype, including a seed hopper, a vertically located sowing disk with through conical cells arranged at regular intervals, an air nozzle to remove excess seed from the conical cell and a device for pushing stuck seeds from the cells. (USSR author's certificate, 1192667, IPC A01C 7/04, 1985)

The known device has several disadvantages:

a) for sowing seeds of two cultures, chain transmissions are used from two sides;

b) a metal scraper damaging the seeds is used to remove stuck seeds from the cells;

c) additional nozzles are used to hold the pressed seed at the bottom of the conical cell.

The objective of the utility model is to simplify the design and increase the operational reliability of the pneumatic metering device.

The technical task is achieved by the fact that the pneumatic sowing device, consisting of a seed hopper, divided by a partition, a vertically located sowing disk with through conical cells mounted on an axis, an air nozzle, an ejector seed and side walls, according to a utility model, the sowing disk is made double. the parts of which are rigidly fixed to each other, on the lateral surface of the conical cell against each other at ¾ its depth there are two through holes at an acute angle to the base of the cell, on the inner surface of each part of the disk under the conical cells formed a groove for the pusher, made in the form of a resilient elastic roller fixed in the lower part of the sidewall. In FIG. 1 shows a pneumatic sowing apparatus for combined sowing, side view; in FIG. 2 - the same, view A; in FIG. 3 - the same, node B, in FIG. 4 - double sowing disk with an ejector seeds.

The pneumatic sowing device for combined sowing contains a seed hopper 1, divided by a partition 2 into two parts, a double sowing disk, parts 3 and 4 of which are rigidly fixed to each other, for example, by bolts with the possibility of their displacement, the disk is made with through conical cells 5, an air nozzle 6 with nozzles 7 and 8. On the side surface of the conical cell 5 opposite each other at на of its depth, two through holes 9 are made at an acute angle to the base of the cell 5. On the inner surface of each part of the disk under the conical cell 5 and a groove 10 for pusher 11 made in the form of a resilient elastic roller fixed in the bottom of the side wall 12.

Pneumatic sowing apparatus for binary sowing works as follows.

During operation of the pneumatic sowing device, the seeds of two cultures, from two parts of the seed hopper 1, divided by a partition 2, by gravity fall into the through conical cells of 5 parts 3 and 4 of the double sowing disk. A rotating sowing disk brings conical cells 5, filled with seeds, to the air nozzle 6, which at the output is divided into two nozzles 7 and 8 with different sections, the air flows of which are directed to the conical cells 5 of the corresponding parts 3 and 4 of the sowing disk. The air flow presses one seed to the bottom of the through conical cell 5, and blows the rest. The presence of holes 9 on the lateral surface of the cell 5 of the sowing disk at ¾ of its depth ensures reliable pressing of one seed to the bottom of the cell 5 and its retention in it. The remaining seeds are blown out.

The sowing disk, rotating on axis 6, with the seed stuck in the cell 5, meets the seed ejector 11 located in the groove 10 on the inner surface of each part of the disk under the conical cells 5. The seed ejector 11 removes the jammed seeds from the cell 5 and goes to the bottom of the furrow .

Parts of the disk 3 and 4 are rigidly fixed to each other by bolts with the possibility of their displacement and replacement of the disk. This allows you to change the sowing patterns. Such a metering disc simplifies the design by eliminating additional chain transmission and is easy to operate.

The use of an elastic roller minimizes seed damage.

The use of the proposed metering device for combined sowing allows to simplify the design and increase the operational reliability of the device and to sow the seeds of two different crops at the same time with combined crops.

Claims (1)

Pneumatic sowing device for combined sowing, consisting of a seed hopper divided by a partition, a vertically located sowing disk with through conical cells, mounted on an axis, an air nozzle, an ejector seed and side walls, characterized in that the sowing disk is made double, the parts of which are rigidly fixed to each other moreover, on the lateral surface of the conical cell against each other at 3/4 of its depth two through holes are made at an acute angle to the base of the cell, and on the inside second surface of each part of the disk under the conical cells formed a groove for the pusher, made in the form of a resilient elastic roller fixed in the lower part of the sidewall.

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