JPS5835000Y2 - Threshing machine sorting device - Google Patents

Description

[Detailed description of the invention] An oscillating sorting body is installed in a sorting air passage, and this sorting air passage is divided into a main sorting air passage that blows through the sorting net of the oscillating sorting body from above the first receiving gutter, and a It has already been proposed to divide the filter into a sub-separation air path that blows from the bottom through the second receiving gutter to the dust exhaust port, and to provide racks or spokes or the like from near the end of the sorting network to above the second receiving gutter.

However, unless the sub-sorting air path crosses a rack or the like, the mixture of straw and straw that has passed through the receiving net from the sorting net will be transferred while being slightly peeled off, and will not be able to undergo sufficient wind sorting. Not only does straw waste fall into the catch trough, but also a portion of secondary materials such as ear scraps are discharged from the dust outlet along with the straw waste.

In order to eliminate this drawback, it is necessary to make the top plate of the dust sorting room above the rack sufficiently high and increase the upward angle of inclination of the sub-sorting air passage. Not only does the machine become larger when the husk becomes higher, but also when threshing wet husks like a combine harvester, the material to be sorted becomes lumpy, so even with the above configuration, it is difficult to perform sufficient separation and sorting. be.

The purpose of the present invention is to improve the above-mentioned drawbacks.The present invention is aimed at improving the above-mentioned drawbacks. While being stirred and transferred by the No. 2 transfer spiral in the receiving gutter, the powerful sorting air at the bottom of the sub-selecting air passage blows up from the bottom of the first receiving gutter while changing direction sequentially toward the rear and upwards. It is characterized by being made to blow separately.

The embodiment shown in the drawings will be described below. Reference numeral 1 denotes a threshing machine mounted on the base of a combine harvester. A handling barrel 3 is mounted on a shaft in a handling chamber 2, and a receiving port 4 is located directly below a supply port 4. A blower fan 7 is provided to form a sorting air path extending from the bottom of the screen 5 to the dust exhaust port 6, and in the sorting air path, there is a base plate 8a facing directly below the receiving screen 5, and a fan 7 extending to the lower end of the original plate 8a. A sorting net 8b, a first original plate 8c that allows grains leaked from the sorting net 8b to flow into the first receiving gutter 9, a second original plate 8d that allows the second grains to flow into the second receiving gutter 10, and a dust inlet. A swing sorting plate 8 consisting of a grenpan 11, etc., which transfers and drops the dust discharged from the second receiving gutter 10, is installed so as to swing back and forth by an eccentric wheel 12 and a swing link 13. It is.

The sorting air generated by the blower fan 7 passes over the first receiving gutter 9 and reaches the sorting net 8b and its tip and the first original plate 8.
The main sorting air passage A blows between the upper ends of c and reaches the dust exhaust port 6.
and a sub-separation air passage B that blows from below the first receiving gutter 9 to the dust exhaust port 6 through the top of the second receiving gutter 10, and the upper edge 10a on the upper side of the second receiving gutter 10. is the second transfer spiral 10
It has a low shape and is approximately the same height as the center of b.

The swash plate 14, which is inclined downward from the upper edge 10a of the upper side of the second receiving gutter 10 toward the blower fan 7, changes the direction of the sub-selecting air path B upward, so that the sub-selecting air path The wind force in the lower part of B is the strongest, and this strong sorting wind blows through the upper half of the second transfer spiral 10c and the area close to the second original plate 8d.

A large number of racks 15 are protruded in parallel on the second original plate 8d, and the vertical width of the lower side is gradually narrower than that of the upper side. As shown in FIG. 1, the upper part enters into the sub-sorting air passage B which blows out from the upper edge of the upper side of the second receiving gutter 10, and the upper part of the first original plate 9 is directed toward the upper part of the starting end of the rack 15. A large number of spokes 16 . . . which are inclined downwardly are arranged in series.

Additionally, the top plate 1γa of the dust sorting chamber 17 is the swinging sorting body 8.
The top plate 17a is provided at a low position close to the upper edge of the side plate 8' and at approximately the same height as the receiving net 5, and a cylinder-shaped cutter 18 is provided on the top plate 17a.

In the above-mentioned apparatus, the husk is inserted into the handling chamber 2 through the supply port 4 in the front part while being conveyed while the stock part is held between the foot chain 1a and the gripping rail 1b, where it is threshed and the material to be handled is removed. The grains and small straw waste leak down from the receiving net 5 onto the gangboard 8a, are sieved by the sorting net 8b, and at the same time are screened by the sorting wind of the main sorting air path A, and the grains are sorted first. The grains with twigs or long pieces of straw that fell into the receiving trough 9 and remained on the net, and the pieces of ears and long pieces of straw that were discharged from the dust outlet 1c onto the grain pan 11 and then transferred are transferred to the spoke 16. thrown upwards.

In the meantime, the lighter straw waste is removed from the wind-selected receiver, and the heavy straw waste and second straw are stopped by the rack 15.
While the straw is being transferred while being loosened by the swinging of the rack 15..., the second straw is blown apart by the sorting wind of the sub-sorting air passage B and flows into the second receiving gutter 10. The debris is discharged from the dust outlet 6 to the outside of the machine.

In addition, the second material flowing into the second receiving gutter 10 is transferred to the second transfer spiral 1.
As they are stirred while being transferred by 0b, the ears of grain are degrained and the mixed straw fragments float to the surface and are blown away by the strong sorting wind of the sub-sorting air passage B and are discharged, leaving a small amount of second grain. The second thrower 19 passes through the second return passage on the side of the handling chamber 2 and returns onto the spanning board 8a.

Further, the waste straw is connected to the straw removal chenograph 20 and the guide rail 21, and is supplied to the cutter 18, where it is shredded and scattered onto the already mown field from the discharge port 18a.

Since the present invention is constructed as described above, the objects thrown from the end of the sorting net are screened by the sorting wind of the sub-sorting air channel while falling to the rack on the second flow plate. The objects to be sorted that have fallen onto the rack are pushed up with each swing of the oscillating sorting body, and in this state, the strong sorting wind blowing from the upper edge of the upper side of the second receiving gutter toward the dust outlet sends the objects into the second transfer spiral. A strong sorting wind that blows through a part of the straw can reliably blow it apart and remove straw waste, and the second straw can be made to flow into the second receiving gutter by the second original board.

Moreover, straw waste was mixed into the second material that flowed into the second catch gutter.
However, straw waste is floated while being stirred and transferred by the No. 2 transfer spiral, and can be separated and removed by the sub-selecting air passage, reducing the No. 2 reduced product and improving the sorting performance. can.

Furthermore, although it is possible to perform extremely good sorting as mentioned above, the sub-sorting air passage can have a low upward slope to the extent that it blows through the upper part of the second transfer spiral itself, so that the dust-exhaust sorting room The machine body can be significantly downsized by forming it low, making it suitable as a threshing device for a combine harvester.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a sectional view of a threshing machine, FIG. 2 is a perspective view of the main parts, and FIG. 3 is a sectional view of a target example. 5...Receiving net, 7...Blower fan,"[
...Occillating sorting body, 8b... Sorting net, 8d
...Second original board, 9...First gutter, 10
...No. 2 receiving gutter, 10b... No. 2 transfer spiral, 15... Rack, 16... Spoke.

Claims (1)

[Scope of utility model registration request] An oscillating sorting body is installed in the sorting air path, and the main sorting air path blows over the first receiving gutter, and the sub-sorting air path blows from below the first receiving gutter to above the second receiving gutter to the dust exhaust port. In the threshing machine configured as above, the upper upper side of the second receiving trough is formed low so that a part of the second transfer spiral faces into the sub-sorting air passage, and is provided at the terminal end of the swing sorting body. A chic is installed on the gangboard facing into the second receiving gutter, and the upper part of the rack faces into the sub-sorting air passage which blows from the upper edge of the upper side of the second receiving gutter toward the dust exhaust port. A sorting device for a threshing machine characterized by: