JPS5923469Y2 - threshing machine - Google Patents

Description

[Detailed description of the invention] Conventionally, a threshing machine is already known in which a master board in the shape of a letter is installed at the bottom of the handling chamber to sort out the material leaking from the receiving net, but this type of threshing machine Because the machine had a low sorting function, it could only thresh well-dried shell culms on rice racks, etc., and was not suitable for threshing equipment such as combine harvesters, which must also thresh wet shell culms.

Therefore, as shown in Figure 2, in a combine harvester threshing machine, relatively long pieces of straw and ear pieces generated in the handling room are removed as quickly as possible through the dust inlet installed on the exhaust culm side. The load on the handling barrel is reduced by discharging single grains and small straw waste through the receiving net, and this leakage and the dust sent from the dust inlet are transferred to the dust outlet. A oscillating sorting body installed in a sorting air passage toward A system was proposed in which both straw waste and dust were discharged through a dust exhaust port.

However, since the threshing machine has to separate the first grain, second grain, straw, and dust in one transfer path in the same direction, the machine body becomes significantly longer in the direction of the transfer path, making the combine extremely large. There were drawbacks.

The present invention aims to provide a threshing machine that can perform good sorting regardless of the water content of the husk, and that can be made significantly smaller in size. A straw waste outlet is provided on one side and a dust outlet is provided on the other side, and the dust discharged from the dust outlet into the sorting chamber is transferred to the straw waste outlet while being sieved and sorted. The present invention is characterized in that it is provided with a sorting body and a main transport sorting body that sieves and sorts the leakage from the receiving net while transporting it toward the dust exhaust port.

The present invention will be described in detail with reference to the embodiments shown in the drawings below.1
1 is a handling cylinder mounted on a shaft in a handling chamber 2, and a feed chain 3 and a clamping rail along its conveyance surface are provided along a handling port, and a dust exhaust port 5 provided below a supply port 4 is provided. A sorting chamber 8 is formed between the straw waste discharge lower and the straw waste discharge lower provided outside and below the culm discharge port 6.

In the sorting chamber 8, a swinging structure 9 that swings in a direction parallel to the handling cylinder axis is supported by an eccentric shaft 10 and a swinging link 11. A transfer sorter comprising a receiving plate 13 and a straw rack 14 for sorting the dust, which is a mixture of discharged straw pieces, ear pieces, and some grains, while transferring it toward the straw waste discharge lower. body 1
5, facing the bottom surface of the straw rack 14 and the dust inlet 5.
A backflow plate 17 with a crimp net 16 extended at the side end, a grain pan 19 facing directly below the receiving net 18 and sloping downward toward the discharge culm 6 side, and an original plate 20 at the lower end of the backflow plate 17. Sorting nets 2 are connected to each other via a sorting net 2 forming a main transfer sorting body.
1, a second receiving gutter 23 having a crimp net 22 at the bottom is provided below the sorting net 21, and a first receiving gutter 24 is provided further below.

In addition, the blower fan 25 provided directly below the backflow plate 17 passes over the second receiving gutter 23, passes through the sorting net 21, and the main separating air passage 26a and the first receiving gutter 24 are discharged to the dust exhaust port 5. and the second receiving gutter 23, and a sub-selecting air passage 26b that blows through the second receiving gutter 23 as well.

In the drawing, 27 is a wind direction plate that directs the exhaust air discharged from the dust outlet 5 downward, and 28 is a fourth port.

Among the unhandled items generated in the handling room 2 in the above-mentioned equipment,
The grains and small straw debris leaking from the receiving net 18 flow down the grain pan 19 and then fall onto the crimp net 16, and are moved in the opposite direction (towards the dust outlet 5) by the swinging of the swinging structure 9. While flowing down, the small straw waste remaining on the crimp net 16 is thrown off from its tip and is discharged to the dust exhaust port 5 by the sorting wind that has blown through the screening net 21.

In addition, the dust containing the ears of dust discharged from the dust outlet 12 is sieved while being transferred by the transfer sorting body 15, and the straw waste is discharged from the straw waste discharge lower to the outside of the machine. The grains, short cut straw, etc. flow down the counterflow plate 17, join the grains, etc. leaked from the receiving net 18, and flow onto the sorting net 21.

At this time, the grains leak through the crimp net 16 while being subjected to wind selection processing, and the ears and the like fall into the tip of the sorting net 21.

Then, the grains that leaked through the sorting net 21 and the pieces of ears remaining on the screen are removed from the tip of the sorting net 21 and the second receiving gutter 23.
The straw waste etc. that fell between the holes were thrown into the dust outlet 5, and the grains that fell into the second receiving gutter 23 leaked from the fine crimp net 22 into the first receiving gutter 24. The second product is transferred by the transfer spiral 29 and then returned onto the grain pan 19 by the second thrower 30.

As mentioned above, the present invention has a straw waste discharge port on one side of the sorting chamber provided at the bottom of the machine, a dust exhaust port on the other side, and the dust is discharged from the dust outlet into the sorting chamber. A transfer sorting body that sieves and sorts materials while transferring them toward the straw waste discharge port, and a main transfer and sorting body that sieves and sorts materials leaked from the receiving net while transferring them toward the dust exhaust port. During grain threshing, a large amount of straw waste discharged from the dust inlet can be discharged separately from the straw waste outlet provided on one side of the machine, instead of being combined with leakage from the receiving net as in the conventional method. can.

As a result, the grains leaking from the receiving net can be separated and sorted from the beginning while being transferred to the opposite side in a minimum amount, so that the sorting function can be significantly improved.

Furthermore, the length of the sorting chamber can be made shorter and more compact than in the conventional system in which all the grains are sorted while being transferred in one direction, and the machine body can be made smaller.

[Brief explanation of the drawing]

Figures 1a and b are longitudinal cross-sectional views of the threshing machine according to the present invention;
The figure is a longitudinal sectional view of a conventional example. 2... Handling room, 4... Supply port, 5...
...Dust exhaust port, 6...Culm discharge port, 7...
Straw waste discharge port, 8... Sorting room, 9... Rocking structure, 12... Dust feeding port, 15... Transfer sorting body, 21. ... Sorting net, 23...
No. 2 receiving gutter, 24... No. 1 receiving gutter.

Claims (1)

[Scope of utility model registration request] A straw waste discharge lower is provided on one side of the sorting chamber 8 provided at the bottom of the machine, and a dust exhaust port 5 is provided on the other side, so that the dust discharged from the dust inlet 12 into the sorting chamber 8 is removed from the straw. It is characterized by being provided with a transfer sorting body that sieves while transferring it toward the waste discharge lower, and a main transfer sorting body that sieves the leaked material from the receiving net 18 while transferring it toward the dust exhaust port 5. A threshing machine.