JPH0120829Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the structure of a threshing machine for threshing grains such as paddy.

[Conventional technology]

Various methods have been devised to reduce No. 3 loss in threshing machines, and one prior art is a sorting device that is equipped with a sorting device located at the bottom of the handling chamber that swings along the axial direction of the handling barrel. An air passage is formed, and the dust exhaust port at the rear end of the handling chamber and the adjacent No. 4 socket are connected to the upper part of the sorting air passage. By providing a processing cylinder and a cross-flow fan having an axis horizontally disposed orthogonal to the axis, spanning the entire width of the sorting air passage, the waste to be processed from the dust exhaust port and the adjacent No. 4 receiving port are provided. A device (Utility Application No. 58-49434) was developed in which the objects to be processed at the end of the sorting device are reprocessed in a processing cylinder, and the waste straw and dust are discharged outside the machine by a cross-flow fan. be.

[Problem that the invention attempts to solve]

On the other hand, in the so-called lower handling method in which grain culm is supplied to the lower peripheral surface of the handling drum, and in the so-called upper handling method in which grain culm is supplied to the upper peripheral surface of the handling drum, in both cases, the grain culm tip side is the grain culm. Since it is located on the side far from the feed chain, the amount of waste discharged from the dust outlet on the side far from the grain culm feed chain is biased. Therefore, if the swinging direction of the swinging device is the same as the axial direction of the processing cylinder, the amount of processed material will be larger on one side and less on the other side over the width perpendicular to the swinging direction. The distribution of objects becomes uneven.

In areas where there is a large amount of material to be processed, there is a large amount of waste straw and there are also many grains mixed in between, so by providing the width of the processing barrel and the cross-flow fan to cover the entire width of the sorting air passage. If you try to promote the discharge of the waste straw outside the machine, there is a disadvantage that the rate of grains mixed with this will also be discharged outside the machine, increasing so-called No. 3 loss. Because of the installation of the flow fan, there was a problem in that the length of the threshing machine increased accordingly.

The present invention has been made to solve the above problems.

[Means for solving problems]

Therefore, in the present invention, a sorting device that swings in the axial direction of the handling cylinder is provided at the bottom of the handling room containing a handling cylinder whose axis is horizontally arranged along the grain culm conveying direction, and a sorting device that swings in the axial direction of the handling cylinder is installed at the rear of the handling room. forming a processing chamber that communicates with the dust exhaust port at the rear end and the upper end of the sorting device;
A processing cylinder having an axis perpendicular to the processing cylinder axis is disposed approximately horizontally at a position near one side of the processing chamber, while a space appropriately separated from the end of the processing cylinder is provided on the other side of the processing chamber. The center of the suction port that opens through the processing cylinder is located above the axis of the processing cylinder in a side view, and the rear lower side edge of the suction port appropriately overlaps the upper edge of the outer periphery of the processing cylinder. It was formed.

[Effect]

With this configuration, the processing cylinder is disposed above the swinging sorting device and behind the side where there are many objects to be processed from the dust exhaust port, and the processing cylinder is processed on the other side where there are fewer objects to be processed. Since the suction port is opened through the end of the processing cylinder and a space of an appropriate width, the objects to be processed that move laterally toward the suction port at the rear end of the swinging sorting device are exposed to the blades of the rotating processing cylinder. It gets caught up in the process and can be processed there.

In this case, if the center of the suction port is located behind the axis of the processing cylinder in side view, and the opening edge of the suction port overlaps the lower edge of the outer circumference of the processing cylinder,
The objects to be processed that enter the lower peripheral surface of the processing cylinder from the rear end of the swing sorting device and are to be processed by the blades are discharged from the machine from the suction port without being sorted, reducing the processing efficiency of the processing cylinder. However, as in the present invention, the opening center of the suction port is located above the axis of the processing cylinder in a side view, and the rear lower side edge of the suction port is located at the upper edge of the outer periphery of the processing cylinder. If the material is formed so that it overlaps with the processing cylinder as appropriate, the material to be processed is first rolled up and processed in the processing cylinder, and then while the material to be processed moves horizontally in the space, the light waste straw and heavy grains are effectively air-blown. Since it can be subjected to screening processing,
The loss of grains discharged from the suction port to the outside of the machine is significantly reduced, and the dust can be removed smoothly.

〔Example〕

Next, an embodiment of the present invention will be described. In the figure, 1 indicates a machine frame of a threshing machine, and a handling chamber 2 defined inside the machine frame 1 has a handling barrel 3 whose axis 4 is horizontal. The handling trunk 3 is placed on one side of the machine frame 1.
A feed chain 6 is installed along the handling port 7 connecting between the grain culm supply port 5 of the handling chamber 2 on the front end side and the empty grain culm discharge port on the rear end side, and the stock head part is sandwiched between the feed chain 6. It is constructed in a so-called under-handling type in which the tip of the grain culm that has been strained is fed to the lower peripheral surface of the handling cylinder 3.

A crimp net 9 is installed in the lower part of the handling chamber 2 except for the dust outlet 8 at the lower rear end of the handling chamber.

The swinging sorting device 10 is disposed in a sorting air passage 11 formed in the lower part of the handling chamber 2 and has a width that is approximately the same as the horizontal width of the handling chamber, and swings back and forth in the 4 directions of the axis of the handling cylinder 3. The device 10 includes a feed pan 12 that slopes diagonally downward from the bottom of the crimp net 9 toward the rear, and a feed pan 12 that slopes diagonally upward from the rear end of the feed pan 12 toward the dust outlet 8 or rearward thereof. Inclined grain sieve 1
3. It consists of a chaff sheave 14 arranged on the upper part, a stroke rack, and a sieve wire 15 extending rearward at its rear end, and the rear end side of the sieve wire 15 is configured to be able to swing up and down from outside the machine.

At the bottom of this swinging sorting device 10, there is a Karaoke fan 17 which blows the wind toward the processing chamber 16 after passing through the grain sieve 13.Then there is a No. 1 screw conveyor that receives leakage from the grain sieve 13. A No. 1 receiving gutter 18 with a screw conveyor and a No. 2 receiving gutter 19 with a No. 2 screw conveyor are provided, and a No. 2 reducing thrower 20 is provided at one end of the second receiving gutter 19 in communication with the second receiving gutter 19. A No. 2 reduction thrower passage 21 communicating from the No. 2 reduction thrower 20 to the handling chamber 2 is formed on the side.

The processing chamber 16 is formed above the second receiving trough 19 and the sieve wire 15, and the rear end of the processing chamber 16 is closed with the rear cover 22 of the machine frame 1.
The front plate 24 of the top plate 23 of the top plate 23 is arranged at a downward slope toward the drainage port 8 at the rear end of the handling chamber 2 at the lower part of the straw drainage chain 25 connected to the rear end of the feed chain 6 to form a No. 4 receiving gutter. At the lower end of this front plate 24, a No. 4 socket 27 is opened adjacent to the dust exhaust port 8.

In addition, the lower end 24' of the front plate 24 is extended approximately vertically downward by an appropriate length to form a processing cylinder 30, which will be described later.
The straw and the like treated by the above are guided to the lower surface and the lower end 24' of the front plate 24 and returned onto the receiving plate of the rear chaff sheave 14 of the swing sex device 10.

Therefore, the processing chamber 16 has the above-mentioned dust exhaust port 8 and the No. 4 socket 2.
7 and the upper rear end of the sorting device 10.

Inside the processing chamber 16, a diffusion type processing cylinder 30 with spiral blades is mounted on a support shaft 29 protruding from the side plate 28 at a position near one side (position near the second reduction thrower 20). The processing cylinder 30 is supported so that its axis 31 is orthogonal to the processing cylinder axis 4 and substantially horizontal, and the processing cylinder 30 is rotated so that the rear side surface moves upward in the same direction as the rotation direction of the second reduction thrower 20. It is something that makes you

At this time, the length l of the processing cylinder 30 in the axial direction
1 is formed to be slightly longer than approximately half the width (W) of the sorting air passage 11, so as to form a space 33 with a sufficient width l2 between the end of the processing cylinder 30 and the other side plate 32 of the processing chamber 16. You can also do it.

A suction port 34 is opened in the other side plate 32, and a suction blower 36 is provided in a case 35 provided outside of the suction port 34, and air is discharged from an exhaust port 37 of the case 35 to the rear outside of the machine.

At this time, in side view, the opening center 38 of the suction port 34 is located above the front part by appropriate dimensions l3, h1 from the axis 31 of the processing cylinder, and the rear lower side edge of the suction port 34 is located on the outer periphery of the processing cylinder. The suction port 34 is formed to appropriately overlap the upper edge, and is opened such that the lower edge of the suction port 34 is positioned above the lower edge of the outer periphery of the processing cylinder 30 by an appropriate distance h2.

Furthermore, the sieve wire 15 in the processing chamber 16
is formed so that its upper surface approaches the lower surface of the outer periphery of the processing cylinder 30 as it goes rearward, while the processing chamber 1
The rear surface of the top plate 23 of No. 6 has a processing cylinder 3
The gap is formed so that the gap gradually widens from the upper half of the outer periphery of 0.

In this configuration, the grain culm whose root portion is held and conveyed by the feed chain 6 is threshed in the handling chamber 2 and discharged from the empty grain culm discharge port at the rear end of the handling chamber. 25 and released to the rear of the machine frame 1.

The threshed grains that are threshed in the handling room 2 and leaked through the crimp net 9 are sent to the chaff sheave 14 of the swing sorting device 10,
The grains are oscillated and sorted by the grain sieve 13, and at this time, they are also subjected to wind sorting by the wind blown up from the Karachi fan 17, and the fine grains are collected in the first receiving trough 18.

The objects to be processed, such as grains with branches and stalks on the oscillating sorting device 10, straw mixed with grains from the dust outlet 8 at the rear end of the handling chamber, and cut grains from the No. 4 receptacle 27, are subjected to oscillating sorting. As the device 10 swings, the grains are subjected to a sorting action and sent onto a sieving line 15 extending rearward at the rear end, and subjected to the sieving action, the grains fall into the first receiving trough 18. Since the rear end of the sieve line 15 is close to the lower half of the outer periphery of the processing cylinder 30, the material that cannot be completely processed by the sieve line 15 and remains on the sieve line 15 is immediately removed from the diffusion type processing cylinder located above. The object to be processed is taken into the lower peripheral side of the processing cylinder 30, and as it rotates, it is loosened by the diffusion action of the spiral blades 30' of the processing cylinder 30, and
The oscillating sorting device 10 is guided by the front downwardly inclined lower surface.
The grains therein fall onto the rear part of the container, where they are subjected to a shaking sorting action, and fall into the second receiving trough 19, where they are returned to the handling chamber 2 via the second return thrower passage 21. On the other hand, light objects such as waste straw are stored on the other side plate 3 on the opposite side of the processing chamber 16 from where the processing cylinder 30 is arranged.
A suction blower 36 is drawn from a suction port 34 opened at 2.
After that, the air is discharged from the exhaust port 37 of the case 35 to the rear outside of the machine.

In this case, if the suction port 34
In the case where the center 38 of the opening is located at the rear lower part of the axis 31 of the processing cylinder 30 and the entire opening of the suction port 34 surrounds the entire outer periphery of the processing cylinder 30;
If the lower peripheral side edge of the opening of the suction port 34 is located below the outer peripheral lower side edge of the processing cylinder 30, the material to be processed on the sieve line 15 will be removed from the blades 30' of the processing cylinder 30.
Before being hoisted by the machine or during the first half of the processing, the grains contained therein are drawn to the suction port 34 side, and the grains contained therein are immediately discharged outside the machine via the suction blower 36, and are directly discharged outside the machine. , No. 3 loss will increase.

In the present invention, for example, in a bottom handling type in which grain culm is supplied to the lower peripheral surface of the handling barrel, the right side in FIG. A processing cylinder 30 with a length slightly longer than half of the sorting air duct width is installed behind the stop position, so that a large amount of material to be processed is rotated by the processing cylinder 30, loosening the waste straw and mixing it therein. The grains can be dropped into the first and second receiving troughs 18 and 19 and collected.

[Effect of the invention] Since the suction port 34 opens in the other side plate 32 so as to face the end face of the processing cylinder 30 with a space 33 in between, the chaff sheave 14,
The objects to be processed on the sieve line 15 that are biased toward the side far from the suction port 34 move laterally toward the suction port 34, but at that time, they are entangled with the blades of the processing cylinder 30 and can be processed. .

Moreover, the opening center 38 of the suction port 34 is located at the front upper part of the axis 31 of the processing cylinder 30 in side view, and the lower side edge of the rear opening of the suction port 34 overlaps the upper edge of the outer periphery of the processing cylinder as appropriate. Therefore, the material to be processed on the rear sieve line 15 of the swinging sorting device is first rolled up by the blades of the processing cylinder 30 and processed, and then, while the material to be processed moves laterally in the space. Since light waste straw and heavy grains are effectively air sorted, the material to be processed is not directly discharged from the suction port 34, and the loss of grains discharged from the suction port to the outside of the machine is greatly reduced. .

Furthermore, as described above, the suction port 34 is connected to the processing cylinder 3.
It is opened in the other side plate 32 so as to face the end face of 0 with a space 33 in between, and the suction port is located in front of the processing cylinder, so the outside of the suction port is The suction blower 36 can be positioned closer to the front, and the machine frame 1 does not become longer in the front-rear direction of rocking of the rocking device 10, which also has the effect of making the thresher smaller.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a vertical side view of the threshing machine, FIG. 2 is a sectional view taken along the - line in FIG. 1, and FIG. FIG. 4 is an enlarged view of the main part of FIG. 1... Machine frame, 2... Handling room, 3... Handling trunk, 4...
Axis line, 6...Feed chain, 8...Dust exhaust port, 1
0... Oscillating sorting device, 11... Sorting air path, 15...
... Sieve wire, 16 ... Processing chamber, 21 ... No. 2 reduction thrower passage, 28 ... Side plate, 32 ... Other side plate, 30
... Processing cylinder, 33 ... Space, 34 ... Suction port, 3
8...center, 35...case, 36...suction blower.

Claims (1)

[Scope of utility model registration request] A sorting device that swings in the axial direction of the handling cylinder is installed at the bottom of the handling room containing a handling cylinder whose axis is arranged horizontally along the grain culm conveyance direction. A processing chamber is formed that communicates with a dust exhaust port and an upper end of the sorting device, and a processing cylinder having an axis perpendicular to the processing cylinder axis is disposed approximately horizontally at a position near one side of the processing chamber. , on the other side of the processing chamber, a suction port that opens through a space appropriately separated from the end of the processing cylinder, the center of which is located above the axis of the processing cylinder in side view; A threshing machine in which the lower side edge of the rear of the opening of the suction port is formed so as to appropriately overlap the outer peripheral upper edge of the processing barrel.