JPS5827629Y2 - Dust removal device for threshing equipment - Google Patents

Description

[Detailed description of the invention] The present invention places a cross-flow fan at an upper position near the end of the sorting path for wind-selecting and transporting the threshed material, and directs the air intake port of this cross-flow fan toward the sorting path. The present invention relates to a dust evacuation device for a threshing device that is open to the ground.

This type of dust evacuation device can smoothly dispose of the dust air mixed with straw waste, etc. that is sent along the sorting path by the action of the air intake and exhaust air of the cross-flow fan. However, the present invention aims to rationally improve the usage pattern of the cross-flow fan so that dust can be removed even more smoothly.

Embodiments of the present invention will be described below based on the drawings.

The figure shows a threshing device equipped with a combine harvester, in which a feed chain 1 installed on the side is used to clamp and transport the husk stock head, and then rotate the husk culm tip, which is received in the handling chamber A. The structure is such that the threshing process is carried out by passing through the upper part of the driven handling cylinder 2, and the waste straw is conveyed to the upper part of the rear waste straw cutter 4 by the waste straw chain 3.

On the lower side of the handling chamber A, there is a swing sorting plate 5 which acts to send the threshed material falling from the handling chamber A in a direction substantially parallel to the rotation axis X direction of the handling cylinder 2, An auxiliary swinging sorting plate 5' is disposed at a lower rear position of the swinging sorting plate 5 and extends further rearward than the swinging sorting plate 5, and
At the lower part of the swing sorting plate 5 on the upper side in the feeding direction, a winnow 6 is arranged which blows air in a direction substantially parallel to the axis X of the handling cylinder.

Then, the processed material falling from the handling chamber A through the receiving net 7 and the processed material discharged directly from the end of the handling chamber are sorted by wind sorting while being sent in a direction approximately parallel to the handling cylinder axis X. Route B
is configured, and while the processed material is being transported along this sorting path B, some of the fine grains fall and are collected in the collection section 8,
It is configured so that the second-scan processed material is dropped into the second-scan collection section 9 and collected.

At a position above the discharge port 15 at the end of the sorting path BO), a cross-flow fan 10 covering the entire width of the sorting path B is disposed.

This cross-flow fan 10 is covered at the top and bottom by an upper wall portion 11 and a partition guide plate 12 as a lower wall portion, and its air intake port 13 is opened toward the sorting path B, and its air exhaust port 14 is The discharge port 15 and the exhaust port 14 are located further down in the wind selection conveyance direction than the terminal discharge port 15 of the sorting path B, and are arranged side by side in the wind selection conveyance direction with a partition guide plate 12 separating the discharge port 15 and the wind exhaust port 14, and The air exhaust port 14 is opened downward so that the air discharged from the air exhaust port 14 is directed substantially vertically downward in the vertical direction.
The structure is such that an air curtain is formed between the ground and the ground by the exhaust air from the fan 10.

A protruding portion 11' that is curved away from the cross-flow fan 10 is formed in a portion of the upper wall portion 11 near the edge of the air intake port 130, and a suction vortex portion C is formed inside this curved protruding portion 11'. At the same time, a protruding portion 12' is formed in a portion of the partition guide plate 12 slightly extending in the rotational direction from the edge of the air outlet 140, and is curved toward the side away from the cross-flow fan 10. A forced swirl portion is exposed inside the curved protruding portion 12'.

Then, due to the action of the suction vortex section C, the suction efficiency to the air intake port 13 is increased, and the airflow toward the air intake port 13 is less likely to come off from the air flow near the air intake port and blow upward, and the push-in with high positive pressure is The structure is such that the air from the air exhaust port 14 is smoothly exhausted without being recirculated at the vortex section.

According to the above configuration, the dust exhaust air flowing along the sorting path B is sucked together with fine straw waste into the upper cross-flow fan 10, and is discharged downward from the air exhaust port 14.
Large straw waste that cannot be sucked up is discharged from outlet 15.
It will be discharged downward in front of the mouth 14.

The air curtain formed between the exhaust port 14 and the ground prevents outside wind from blowing into the exhaust port 15 throughout the entire width of the exhaust port 15.
Large straw waste can be discharged smoothly without being adversely affected by outside wind.

In summary, the dust evacuation device of the threshing device according to the present invention has a cross-flow flow having the air suction port 13 opened toward the sorting path B at a position above the terminal discharge port 15 of the sorting path B for wind-selecting and conveying the threshed material. By arranging a fan 10, locating the exhaust port 14 of the fan 10 on the downstream side of the exhaust port 15 in the wind selection conveyance direction, and providing a partition guide plate 12 at the bottom of the fan 10, the exhaust port 15 and exhaust port 1
4 are separated from each other and arranged in parallel in the wind selection conveyance direction, and the air outlet 14 is opened downward so that the air discharged from the air outlet 14 is directed substantially vertically downward, so that the air outlet 14 and the ground are separated from each other. The structure is characterized in that an air curtain is formed by the exhaust air from the fan 10 between the two.

That is, the dust exhaust air flowing along the sorting path B is sucked and discharged together with fine straw waste by the cross-flow fan 10, and large straw waste is discharged from the discharge port 15.
This enables smooth dust removal while avoiding troubles such as clogging of the cross-flow fan 10, and by forming an air curtain using the exhaust air of the cross-flow fan 10, This prevents outside wind from blowing into the discharge port 15, allowing large straw waste to be discharged from the discharge port 15 in a good manner, and making it possible to perform extremely smooth dust removal as a whole. ing.

In other words, when removing dust using the cross-flow fan 10,
If the cross-flow fan 10 is simply arranged at the end of the sorting path B to suck in and discharge all the dust exhaust air and large straw waste flowing along the sorting path B, the cross-flow fan 10 will remove the large straw. Debris can cause problems such as clogging, but this can be avoided.Moreover, the air curtain formed using the exhaust air from the cross-flow fan 10 prevents outside air from reaching the outlet 15. Therefore, the cross-flow fan 10 can be used rationally to perform extremely smooth dust removal.

[Brief explanation of the drawing]

The drawing is a vertical sectional side view of a threshing device showing an embodiment of the dust removal device of the threshing device according to the present invention. 10...Cross flow fan, 12...Partition guide plate, 13...Air intake port, 14...
・Exhaust port, 15...Exhaust port, B......Selection route.

Claims (1)

[Scope of utility model registration request] Terminal discharge port 15 of the sorting path B that wind-selects and transports the threshed material
A cross-flow fan 10 with its air intake port 13 opened toward the sorting path B is disposed at an upper position, and the air exhaust port 14 of this fan 10 is located further downstream than the discharge port 15 in the wind selection conveyance direction. By providing a partition guide plate 12 at the lower part of the fan 10, the discharge port 15 and the air exhaust port 14 are partitioned and arranged side by side in the wind selection conveyance direction, and the air discharged from the air exhaust port 14 is approximately The air exhaust port 14 is opened downward so as to be directed vertically downward, and the exhaust air from the fan 10 forms an air curtain between the air exhaust port 14 and the ground. Dust removal device for threshing equipment.