JPS5834093B2 - Datsukoku Kinohijin Sochi - Google Patents

Description

[Detailed description of the invention] The present invention relates to a dust removal device for a threshing machine.

This type of dust evacuation device discharges dust such as straw waste contained in the threshing material from the end of the sorting path where the threshing material is conveyed horizontally by wind. Yes, but
There are cases where it is desired to guide and discharge the waste material downward in a direction that is different from the direction in which the waste is transported in the sorting path.

However, in such a case, simply directing the guiding and releasing direction of the waste material downward, which is significantly different from the generally horizontal wind-selecting transport direction, will allow the sorting air blown along the wind-selecting transport direction to flow smoothly. As a result, a turbulent flow of sorting air occurs in the threshing machine, resulting in problems such as difficulty in smoothly discharging waste materials.

Therefore, the present invention has developed a threshing machine that can perform smooth dust removal while guiding and discharging waste materials in a downward direction that is different from the wind sorting conveyance direction along the horizontal direction. The purpose is to provide dust removal equipment.

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

The figure shows a threshing machine equipped with a combine harvester, in which the feed chain 1 installed in the horizontal part 1 is used to hold and transport the husk stock head while rotating the husk culm tip placed in the handling chamber A. The structure is such that the straw is passed through the upper part of the driving handling cylinder 2 for threshing, and the waste straw is conveyed to the upper part of the rear straw cutter 4 by a straw removal chain 3 for threshing.

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, A swinging sheave 5' is provided integrally with the rear of the swinging sorting plate 5, and a winch 6 for blowing air in the direction of the axis X of the handling cylinder is also arranged.

Then, a sorting path B is constructed for wind-selecting and transporting the processed material threshed in the handling room A as it passes through the receiving net 7 in a horizontal direction substantially parallel to the handling cylinder axis X. During wind selection conveyance of the treated material along the line B, the fine grains are dropped into the first collecting section 8 and collected, and the second processed material is dropped into the second collecting section 9 and collected.

. Further, from the end of the sorting path B, a discharge path C is connected to the rear wall 10 of the threshing machine in a bent manner, which guides waste materials such as straw waste downward and discharges them from the lower opening 15 to the outside of the machine. At the same time, a cross-flow fan 11 is provided at a side portion of the discharge path C on the sorting path B side, which spans the width of the discharge path C.
is located.

This cross-flow fan 11 is surrounded by a shielding plate 12 disposed between the discharge path C and a side wall on the second recovery section side, and has an air intake facing the inlet side of the discharge path C at the top. An air outlet 13 and an opening 15 for a discharge path C at the bottom.
The exhaust ports 14 facing the sides are respectively opened.

Further, a recessed space recessed toward the discharge path C side is formed in the intermediate portion of the shielding plate 12 in the vertical direction.

Then, by utilizing the fact that the inside of this recessed space becomes a high pressure part as the cross-flow fan 110 rotates, the cross-flow fan 1
1 is configured so that the rotating wind caused by the rotational winding 1 is smoothly discharged to the exhaust port 14 side.

According to the above configuration, the sorting air from the winnower 6 flowing along the wind sorting conveyance direction in the sorting path B is transferred to the cross-flow fan 1
1, the air flows downward from the terminal end of the sorting path C along the discharge path C.

As a result, waste materials such as straw waste that are transferred in the wind sorting conveyance direction along the sorting path B are transferred downward from the end of the sorting path B along the discharge path C and are discharged outside the machine. It turns out.

At this time, most of the waste, such as relatively large straw waste, moves along the rear wall 10 due to its own inertia and is not sucked into the cross-flow fan 11, leaving the discharge path C.
A part of the relatively fine straw waste in the waste is sucked into the cross-flow fan 11, and the relatively fine straw waste is sucked into the cross-flow fan 11. As a result, the air is smoothly discharged from the air outlet 14 to the outside of the machine without being caught by the cross-flow fan 11 or the like.

In the embodiment, the exhaust air discharged from the air outlet 14 is passed near the bottom of the opening 15, and the straw waste that also comes out of the opening 15 is sucked in, so that a so-called eject effect can be achieved. Good too.

In summary, the dust removal device of the threshing machine according to the present invention moves the waste from the end of the sorting path B that wind-selects and transports the threshed material in a downward direction that is significantly different from the wind-selected transport direction in which the waste is horizontally conveyed. A discharge path C for guiding and discharging toward
A cross-flow fan 11 is disposed across the width of the discharge path C, and the air intake port 13 of this fan 11 is opened on the inlet side of the discharge path C.

In other words, the waste is transferred from the end of the sorting path B to the discharge path C.
The sorting in the sorting path B is carried out by the air suction action of the cross-flow fan 11. By actively and smoothly changing the wind flow in the direction of the discharge path C, the required dust removal work can be carried out smoothly without turbulence of the sorting air inside the threshing machine, and the cross-flow fan 11 can be moved in the direction of the discharge path C. By arranging the cross-flow fan 11 on the side of the sorting path B, the cross-flow fan 11 can suck in large pieces of straw and cause the fan 11 to become clogged. I was able to do it well.

[Brief explanation of drawings]

The drawing is a longitudinal sectional side view showing an embodiment of a dust removal device for a threshing machine according to the present invention. 11...Cross flow fan, 13...Inlet, 14...Exhaust port, B...Selection path, C...Discharge path .

Claims (1)

[Claims] 1. From the end of the sorting path B, which carries the threshed material along the horizontal direction through wind selection, a discharge path C is installed in which the waste is guided and discharged downward in a direction that is largely different from the wind selection transport direction. At the same time, a cross-flow fan 11 that spans the width of the discharge path C is arranged at a side portion of the discharge path C on the sorting path B side, and the air intake port 13 of this fan 11 is placed on the side of the discharge path C on the side of the sorting path B. A dust removal device for a thresher, characterized in that it has an opening.