JPH0115333Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dust inlet device for a threshing machine in which a dust inlet is provided at the terminal end of a handling barrel receiving net.

Generally, the handling trunk receiving net installed in the handling room of the threshing machine has
A dust outlet is provided at the rear of the handling chamber to discharge dust such as cut grain culms and straw waste that do not leak through the handling trunk receiving net from the handling room. However, since the conventional dust inlet is simply an opening at the rear of the receiving net, if the grain culm to be threshed is wet material, the dust generated in the handling room will flow into the dust inlet. In the process, it becomes lumpy, and this is discharged as it is from the dust inlet into the sorting chamber. For this reason, the above-mentioned lump-like dust particles are sucked into the suction fan, increasing the number of scattered particles, and falling into the second funnel, causing an increase in reduced substances and clogging, resulting in efficient sorting. There was a drawback that the performance could not be obtained.

The present invention was devised in order to eliminate these drawbacks in view of the above-mentioned actual situation.The present invention was created in order to eliminate these shortcomings. In a threshing machine equipped with a dust inlet for discharging grains, the dust inlet has a plurality of partition plates each having an arcuate upper edge and a serrated shape at positions that conflict with the handling teeth installed in the handling barrel. It is characterized in that the dust material discharged from the dust feeding port is divided and dispersed in the front, back, left and right directions.

With this configuration, the present invention is capable of discharging the dust particles generated in the handling chamber from the dust outlet in a finely dispersed state.

The structure of the present invention will be explained based on an embodiment shown in the drawings. 1 is a threshing machine main body, 2 is a grain culm stock holding body that constitutes the threshing machine main body 1, and 3 is a grain culm stock base. A handling room for threshing the grain culm being held and conveyed by the holding conveyor 2, 4 is a handling drum provided in the handling room 3, 5 is a sorting room arranged below the handling room 3,
6 is an oscillating flow plate installed in the sorting room 5, 7 is a winch,
8 is the first helical body, 9 is the second thrower, 9a is the second helical body, and 10 is the suction fan, which are constructed in the conventional manner.

Reference numeral 11 denotes a handling cylinder receiving net stretched below the handling cylinder 4, and a dust inlet 12 is provided at the rear of the receiving net 11, that is, at the end of grain culm conveyance. Among the unprocessed materials that have been threshed, the dust such as cut grain culms and straw waste that does not leak through the receiving net 11 is transferred from the dust inlet 12 to the upper swinging rack provided on the swinging flow plate 6. 13. Reference numeral 14 denotes a plurality of partition plates arranged at the dust inlet 12, each partition plate 14
is located between the handling teeth 15 implanted in the handling barrel 4, and its both ends are fixed to the left and right frame walls 3a and 3b forming the handling chamber 3 so as to be in conflict with the handling teeth 15. There is. At least the upper edge side of the partition plate 14 facing the handling barrel 4 is curved in an arcuate manner so as to follow the rotation locus of the handling teeth 15. Furthermore, the partition plate 14 of the present invention has a serrated portion 16 on its curved upper edge.
is formed. The serrated portion 16 may be formed on the entire upper edge of the partition plate 14 as in the embodiment shown in FIG. Various embodiments, such as one formed in one half of the starting end side, correspond to the present invention. Moreover, the relationship between the handling teeth 15 and the serrated portion 16 is such that in this embodiment, the handling tooth tip 15a is located between the top 16a and the valley groove portion 16b of the serrated portion 16, as shown in FIG. It is configured.

In the figure, 17 is a lower rocking rack provided for the rocking fluid 6, 18 is a sorting net, and 19 is a rear rack.

Next, the operation of the present invention constructed as described above will be explained. Grain culms whose stock side is pinched and transported by the grain culm stock holding conveyor 2 are threshed in the handling room 3 and then discharged and transported to the rear. Most of the small particles such as grains from the collected material leak from the receiving net 11 onto the upper swinging rack 13 and are shaken to be sorted, and the grains are passed from the sorting net 18 to the side closest to the helical body 8. It leaks and is collected as the first thing. On the other hand, among the above-mentioned materials to be handled, those that do not leak through the receiving net 11, such as ear-cut grain culms and long straw waste, are sequentially sent to the conveyance terminal side as dust materials, and are sent to the dust receiving net provided at the rear of the receiving net 11. It is discharged from the opening 12 onto the upper swinging rack 13, where it is transferred to the rear rack 19 side while undergoing swinging sorting, and the second material is returned to the starting end side of the sorting chamber 5 via the second thrower 9, and the third material is discharged onto the upper swinging rack 13. The articles are discharged out of the machine by the suction action of the suction fan 10.

In such a series of threshing and sorting operations, especially when the grain culm is wet material, the dust that does not leak through the receiving net 11 may become entangled and form clumps on the way to the dust port 12. become. The dust that has become a lump in this way will be discharged from the dust inlet 12, but in this case, it will not be discharged from the dust inlet 12 as a large lump, but will be transferred to the handling teeth 15. While rotating while being carried around, the material is divided into small pieces by the partition plates 14 under the cooperative action of the handling teeth 15 and the partition plates 14, and then sent between each partition plate 14. The dust is discharged from the dust port 12 on an average basis.

Moreover, in the present invention, since the serrated portion 16 is provided on the upper edge of the partition plate 14 that divides the lumpy dust into small pieces, the serration 16 is rotated by the handling teeth 15 when dividing the lumpy dust. It becomes a resistance to the action, and therefore not only improves the separation performance of the lumpy dust particles, but also allows the lumpy dust particles to be widely dispersed in the rotational direction of the handling cylinder 4. The materials are discharged in a distributed state not only in the front and rear directions but also in the left and right directions with respect to the lower swing rack 13. Therefore, unlike the conventional method, the grain sorting performance is not degraded due to the generation of lumpy dust particles, and extremely excellent sorting performance can be provided.

Furthermore, in the above embodiment, the relationship between the handling teeth 15 and the serrations 16 is such that the handling tooth tips 15a overlap between the tops 16a and the valleys 16b of the serrations, so in this case, Unlike when the handling tooth tip 15a overlaps deeper than the groove portion 16b, the resistance of the sawtooth portion 16 becomes large and a large load is not applied to the handling tooth 15 or the partition plate 14. 15a is the top 16a
The resistance at the serrated portion 16 is reduced and the dispersion performance in the direction of rotation of the handling cylinder is not degraded unlike when the two do not overlap, and the maximum effect of providing the serrated portion 16 is achieved. can.

On the other hand, since the above-mentioned lump-like dust particles being carried around are likely to get caught at the fixed part between the partition plate 14 and the rotation end side frame wall 3b of the handling cylinder 4, it is difficult to quickly move the lump-like dust particles around this area. However, in this respect, it is preferable that the serrated portion 16 is provided on the entire partition plate 14 as in the embodiment shown in FIG. It is better to install it in one half of the rotation starting end side, and therefore,
In the case where the serrated portion 16 is not provided on the rotation end side, there is no catching of straw etc. on the side of the frame wall 3b, and furthermore, the lumpy dust particles are loosened and dispersed without being subjected to unreasonable resistance. The advantage is that it can be done.

In summary, since the present invention is constructed as described above, the dust particles that have formed into lumps in the handling chamber and are about to be discharged from the dust outlet are moved between the handling teeth and the corresponding dust at the dust outlet position. Through the cooperation of multiple partition plates having serrations provided in a staggered manner between the handling teeth, the dust is divided into small pieces, and the dust is passed through between the partition plates in the front, back, left and right directions from the dust inlet. It will be dispersed and discharged. Therefore, even if a lump of dust is generated, this lump of dust is finely divided by the joint action of the plurality of partition plates having serrated parts and the handling teeth. The particles are evenly distributed in the front, back, left, and right sides of the mouth, and excellent sorting performance is achieved without an increase in the number of third-ring particles, an increase in second-ring elements, or clogging. You will be able to demonstrate your skills.

[Brief explanation of drawings]

The drawings show an embodiment of the dust inlet device for a threshing machine according to the present invention, in which FIG. 1 is an overall longitudinal sectional side view of the threshing machine, FIG. 2 is an overall longitudinal sectional front view of the same, and FIG. 4 is an enlarged view of the main part, and FIG. 5 is an explanatory view of the operation. In the figure, 1 is the threshing machine main body, 3 is the handling room, 4 is the handling barrel,
11 is a handling trunk receiving net, 12 is a dust inlet, 14 is a partition plate,
15 is a handling tooth, and 16 is a sawtooth portion.

Claims (1)

[Scope of utility model registration request] In a threshing machine that has a dust outlet at the end of the handling barrel receiving net installed in the handling room to discharge dust that does not leak from the handling barrel receiving net, the dust outlet has a dust outlet installed in the handling barrel. A plurality of partition plates each having an arcuate upper edge and a sawtooth shape are installed at positions that conflict with the handling teeth, dividing the dust discharged from the dust outlet and dispersing it in the front, rear, left and right directions. A dust inlet device for a threshing machine characterized by: