RU56767U1 - PNEUMATIC SOWING UNIT - Google Patents

Abstract

The utility model relates to agriculture. The technical problem solved by the utility model is to simplify the design of the apparatus, ensure uniform sowing of seeds and reduce their losses. The technical problem is solved in that in a pneumatic sowing apparatus containing a housing with two seed tanks and mounted on a horizontal axis tedders and sowing discs with suction cells with holes in communication with the chambers of the vacuum system. The latter consists of three air ducts, two of which are connected to the vacuum chambers of the sowing discs, on the back side of which fixed washers are installed in the casing with ring cutouts of opposite disc cells and communicated with the discharge zone of the mentioned vacuum chambers, at the same time at the place where the seeds exit the cells of the sowing discs additional vacuum chambers are installed, connected to the third duct of the vacuum system, and the first two ducts can be made of different diameters. 2 p. F. 3 ill.

Description

The proposed utility model relates to agriculture and can be used for sowing simultaneously two industrial crops.

Known pneumatic sowing apparatus containing a housing with two seed containers and mounted on a horizontal axis tedders and sowing discs with suction cells with holes in communication with the chambers of the vacuum system. (AS No. 1678227, A 01 C 7/04 1991)

The disadvantages of the apparatus include:

- design complexity;

- the telescopic connection of the curved nozzles of the vacuum system cannot provide sufficient tightness;

- the ejection of seeds from the discs occurs due to their own weight, which does not ensure their exact entry into the furrow, and can also lead to sticking of seeds in the cells and their loss.

The technical problem posed before the utility model is to simplify the design of the apparatus, ensure uniform sowing of seeds and reduce their losses.

The technical problem is solved by the fact that in a pneumatic sowing device containing a housing with two seed tanks and mounted on a horizontal axis tedders and sowing discs with suction cells with holes communicated with the chambers of the vacuum system, the latter consists of three ducts, two of which are connected to vacuum chambers of sowing disks, on the back side having fixed washers installed in the housing with annular cutouts of opposed disk cells and communicated with the rarefaction zone notifications mentioned vacuum chambers at the location of seed yield of the cells of the sowing disc installed additional vacuum chambers connected to the third duct of the vacuum system, and the two first air duct can be made with different diameters.

The proposed apparatus with the simplicity of design avoids loss of seeds, their injury, and also provides

uniformity and accuracy of their penetration into the furrow with deepening in the soil in accordance with agricultural requirements.

Figure 1 shows a cross section of the apparatus;

Figure 2 is a view aa of Figure 1;

Figure 3 is a view of the BB of Figure 1

The apparatus consists of a housing 1 with seed tanks 2 and hoppers 3. In the seed tanks on the horizontal axis are mounted paddle agitators 4 with seed discs 5, cells 6 of which are communicated through openings with chambers 7 of the vacuum system. On the back of the disks 5, fixed washers 8 are installed with annular cutouts 9 located opposite the cells of the seed discs 5 and communicated with the vacuum zone of the vacuum chambers 7. In the lower part of the housing 1, additional vacuum chambers 10 are mounted at the place where the seeds exit the cells 6 of the seed discs 5, exhaust channels 11 and air nozzles 12 separated from the channels 11 by a grid 13. The vacuum system consists of three air ducts, two of which 14 and 15 are in communication with the vacuum chambers 7. Depending on the parameters of the seed material, the air ducts 14 15 can have different diameters. The third duct of the vacuum system (not shown) is connected to the nozzles 12, creating a vacuum in the additional vacuum chambers 10. the drive is from the shaft 16 and the sprockets 17.

The device operates as follows. The agitator 4 feeds the seeds to the cells 6 of the sowing disk 5, where they are sucked under the action of the vacuum chamber 7. Then, when the sowing disk 5 is rotated, the cells 6 with seeds fall into the area of the ring cutouts 8 of the washers 9, where the vacuum is created due to their communication with the vacuum cameras 7. Thus, the seeds are pressed to the bottom of the cells of the sowing disk, which prevents the rotation of the seeds in the cells and their friction on the walls of the housing, and, therefore, eliminates their injury.

Then, the seeds from the disc cells under the action of an additional vacuum chamber 10 are sucked out and sent through the exhaust channels 11 to the furrow. Small debris that has fallen into the cells along with the seeds is sucked out through the net 13.

Claims (2)

1. Pneumatic sowing apparatus comprising a housing with two seed tanks and tedders mounted on a horizontal axis and sowing discs with suction cells with holes communicated with the chambers of the vacuum system, characterized in that the vacuum system consists of three ducts, two of which are connected to vacuum chambers of sowing discs, on the back side having mounted washers with annular cutouts of opposed disc cells and communicated with the rarefaction zone of said vacuum chambers, at th place in seed yield from cells of the sowing disc 6 are mounted additional vacuum chambers connected to the third duct of the vacuum system. 2. The apparatus according to claim 1, characterized in that the air ducts of the vacuum chambers of the sowing discs, depending on the size and weight of the sown two different crops made of different diameters.