JPH04662Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for sorting threshed grain in a threshing machine mounted on a combine harvester or of a stationary type.

[Conventional technology]

Conventionally, this type of sorting device is provided with a swinging sorting mechanism that extends in the axial direction of the handling barrel below the handling chamber and swings back and forth in that direction. discloses a chisel fan with a suction fan for removing dust at the upper end of each fan (for example, Japanese Patent Publication No. 49-5027, etc.).

[The problem that the idea aims to solve]

However, the oscillating sorting mechanism here requires a feed pan and a grain sieve for sorting threshed grains, and a stroke rack or chaff sieve for sorting waste materials.
Since a base fan is required, the structure is not only extremely complicated, but also the weight increases significantly.Furthermore, a large driving force is required to swing the swinging sorting mechanism, and the swinging movement causes There was a problem that large vibrations and noise were generated.

The present invention uses a cylindrical mesh cylinder or perforated cylinder for sorting grain threshing, thereby simplifying the structure, reducing size and weight, and reducing driving power, vibration and noise. It is an object of the present invention to provide a sorting device with high sorting ability and high sorting accuracy, which is designed to reduce the number of particles.

[Means to solve the problem]

In order to achieve this object, the present invention has a sorting cylinder installed in the lower part of a handling chamber which has a built-in handling cylinder and a crimp net is stretched except for the dust inlet at one end of the handling cylinder. The sorting cylinder is mounted so that its axis extends in a substantially horizontal direction, and a net or perforated plate is stretched around the outer peripheral surface of the sorting cylinder in a cylindrical shape, and one of the left and right sides of the sorting cylinder is A cross-flow fan configured to suck the air inside the sorting cylinder and release it to the atmosphere is disposed approximately parallel to the sorting cylinder, and further, the upper surface of the sorting cylinder is attached to the sorting cylinder. A driving means configured to rotate in the direction of movement in the direction of the cross-flow fan is provided, and a drive means is provided between the sorting cylinder and the handling chamber to prevent grain threshing from the crimp screen and dust feeding port in the handling chamber. A guide means guided to the outer peripheral surface of the sorting cylinder is provided below the sorting cylinder,
A first grain receiving trough is provided in each, and the coarseness of the mesh or perforated plate of the sorting cylinder is made fine enough to allow only grains to pass through the lower part of the crimp mesh. On the other hand, the lower part of the dust inlet is formed with a large roughness.

[Functions and effects of the idea]

In this configuration, the threshed grains that have fallen from the crimp screen and the dust inlet in the handling room are guided to the outer circumferential surface of the mesh or perforated plate stretched over the sorting cylinder via the guiding means, and the threshed grains are The grains and small straw waste pass through fine meshes and enter the sorting cylinder, and the small straw waste is sorted out by riding the air flow from the sorting cylinder to the crossflow fan, and the grains are transported below the sorting cylinder. After entering the first grain receiving trough, it is discharged outside the machine.

On the other hand, large pieces of straw etc. from the above-mentioned threshing do not enter the sorting cylinder through the fine mesh of the sorting cylinder, but are traversed by the rotation of the sorting cylinder while being attached to the surface of the screen or perforated plate. It moves to the flow fan side, and is separated from the surface of the net or perforated plate by the centrifugal force accompanying the rotation of the sorting cylinder and the air flow from the sorting cylinder to the cross flow fan. Since the particles are discharged outside the machine through the filter, clogging of the screen or perforated plate in the sorting cylinder can be reduced.

In this case, the sorting accuracy is improved by making the mesh of the sorting cylinder or the perforated plate smaller, and the sorting ability is improved by making the mesh of the sorting cylinder or the perforated plate larger. On the other hand, the threshed grains falling from the crimp net have a large amount of grains and a small proportion of straw waste, and
Since the threshed grains that fall from the dust inlet have a small amount of grains and a high proportion of straw waste, the roughness of the mesh or perforated plate of the sorting cylinder is due to the lower part of the crimp screen. If the same is true for both the crimping net and the lower part of the dust inlet, it is not possible to obtain an optimal sorting condition for the grains falling from the crimp net and the grains falling from the dust inlet.

In contrast, the present invention makes the mesh or perforated plate of the sorting cylinder so fine that only grains can pass through the lower part of the crimp mesh, while The lower part of the dust feeding port is formed to have a large coarseness, and the roughness of the mesh of the sorting cylinder or the perforated plate is used for threshing grains falling from the crimp screen and for the dust feeding. Since the settings can be set optimally for both the removal of grains that fall from the mouth, it is possible to reliably improve the sorting accuracy and sorting ability.

In this way, the present invention sorts the threshed grains from the handling chamber by the rotation of the rotary sorting cylinder and the cross-flow fan, which is a swinging type like the conventional one.
In addition, the structure is simpler, smaller and lighter than those requiring two fans, and
Vibration and noise can be significantly reduced, and driving power can also be reduced.Furthermore, clogging of the screen or perforated plate in the rotary sorting cylinder can be prevented, and By setting the coarseness of the perforated plate, it is possible to obtain high sorting ability and high sorting accuracy.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 indicates a machine frame of a threshing machine;
A handling chamber 2 defined inside the machine frame 1 is equipped with a handling barrel 3, and a dust inlet 5 on the opposite side of the grain culm entrance 4 to the handling chamber 2 is provided at the bottom of the handling barrel 3. A crimp net 6 is stretched across the machine frame 1, and a feed chain 7 is provided on the upper side of the machine frame 1 to convey the grain from the grain inlet 4 along the handling cylinder 3.

Reference numeral 8 indicates a cross-flow fan disposed on the lower side of the handling chamber 2 substantially parallel to the axis of the handling barrel 3, and the cross-flow fan 8 has blades 9 whose lengths in the axial direction are It is substantially the same as the later-described sorting cylinder 11 which is longer than the axial length of the handling barrel 3, and is designed to suck air inside the machine frame at the bottom of the handling chamber 2 and open downward on the outer surface of the machine frame 1. A dust discharge passage 10 provided as
It is configured to be released from the aircraft.

Reference numeral 11 indicates a double cylindrical sorting cylinder arranged at the lower part of the handling chamber 2, one end 11a of the sorting cylinder 11 is located at the lower part of the grain culm entrance 4, while the other end is located at the lower part of the grain culm entrance 4. 11b is located at an appropriate distance l from the terminal end of the crimp net 6 backwardly beyond the dust inlet 5.

In forming the outer cylinder 12 of this sorting cylinder 11 into a porous shape such as a net or a perforated plate, this outer cylinder 12 is divided into a first half outer cylinder 12a under the crimp net 6 and a second half outer cylinder 12a. The roughness of the outer cylinder 12a is divided into the cylinder 12b and the outer cylinder 12a.
The first half outer cylinder 12a has a coarseness that is fine enough to allow only grains to pass through, while the second half outer cylinder 12b has a larger coarseness than the first half outer cylinder 12a. The coarseness of the eyes,
The coarseness of the mesh in the second half outer cylinder 12b is configured to be different.

The inner cylinder 13 in the sorting cylinder 11 is formed into a porous shape such as a mesh or perforated plate that prevents grains from passing through, and the rotation shaft 14 is attached to the outer peripheral surface of the inner cylinder 13.
Long fins 26 are provided along the circumferential direction at appropriate intervals so as to protrude radially outward.

The sorting cylinder 11 is arranged concentrically on a horizontal rotation shaft 14 arranged parallel to the rotation axis of the cross-flow fan 8 on the suction side thereof, and is rotated by fixing a pulley 15 in order to rotate it in opposite directions. axis 14
The inner cylinder 13 is fixed to the rotary shaft 14, while the outer cylinder 12 is rotatably supported on the rotating shaft 14. A pulley 16 is fixed to one end of the outer cylinder 12, so that the outer cylinder 12 has its upper peripheral surface side It rotates toward the suction side of the cross-flow fan 8, and rotates the inner cylinder 13 in the opposite direction.

A hopper-shaped guide is provided between the sorting cylinder 11 and the handling chamber 2 to guide the threshed grains falling from the crimp net 6 and the dust inlet 5 to the outer peripheral surface of the outer cylinder 12. A first grain receiving trough 25 equipped with a spiral conveyor 24 is disposed at the lower part of the sorting cylinder 11, while a means 17 is provided on the side of the machine frame 1 for supplying air to the cross-flow fan 8. Intake port 2
1 is provided, and an inclined plate 22 for collecting grains is provided within this air intake port 21. Further, the guiding means 1
A ribbon spiral conveyor 19 extending in the axial direction of the sorting cylinder 11 is provided in the inside of the ribbon spiral conveyor 19, and a wire mesh 20 is provided below the conveyor 19, as well as a grain board 18. Furthermore, in the lower part of the sorting cylinder 11,
The first grain receiving trough 25 from the lower part of the cross-flow fan 8
A grain board 23 is provided which is inclined diagonally downward toward the grain.

In this configuration, grains such as grains and straw waste threshed by the handling cylinder 3 from the grain culm being conveyed by the feed chain 7 fall from the crimp net 6 and the dust inlet 5, and are guided by a hopper-shaped guiding means. Sorting cylinder 1 from 17
1 to the upper surface of the outer cylinder 12, where the grains and fine straw waste fall from the mesh or perforated plate in the outer cylinder 12 toward the outer circumferential surface of the inner cylinder 13, while large straw waste, etc. The cross-flow fan 8 is attached to the outer peripheral surface of the net or perforated plate in 12.
is carried to the suction side of the machine, sucked into the cross-flow fan 8, and then discharged outside the machine.

Further, fine straw waste that has entered the sorting cylinder 11 through the mesh or perforated plate in the outer cylinder 12 is discharged outside the machine in the same way as the straw waste by riding on the suction wind toward the cross-flow fan 8. On the other hand, the grains fall along the outer periphery of the inner cylinder 13 as it rotates, and are guided to the first grain receiving trough 19 through the hole in the lower peripheral surface of the outer cylinder 12.

In this case, the threshed grains falling from the crimp net 6 have a large amount of grains and a small proportion of straw waste, and the threshed grains falling from the dust inlet 5 have a large amount of grains and a small proportion of straw waste.
Since the amount of grain is small and the proportion of straw waste is high, the coarseness of the mesh or perforated plate of the outer cylinder 12 of the sorting cylinder 11 is such that the lower part of the crimp screen 6 and the dust inlet 5 If it is the same across both lower parts of the screen, it is not possible to obtain an optimal sorting condition for the threshed grains falling from the crimp net 6 and the threshing grains falling from the dust feeding port 5.

In contrast, in the present invention, the outer cylinder 1 of the sorting cylinder 11
2 is divided into a first half outer cylinder 12a at the bottom of the crimp net 6 and a second half outer cylinder 12b, and the coarseness of the first half outer cylinder 12a is made fine enough to allow only grains to pass through. On the other hand, by configuring the second half outer cylinder 12b to have a larger mesh coarseness than the first half outer cylinder 12a, the removed grains falling from the crimp net 6 can be removed. Since it is possible to obtain an optimal sorting condition for the threshed grains falling from the dust inlet 5, it is possible to improve the sorting accuracy and sorting ability.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of a threshing machine, and FIG. 2 is a sectional view taken from the side of FIG. 1. 1... Machine frame, 2... Handling room, 3... Handling trunk, 4...
Grain culm inlet, 5... Dust inlet, 6... Crimp net, 8
... Cross flow fan, 11 ... Sorting cylinder, 12 ...
Outer cylinder, 12a...first half outer cylinder, 12b...second half outer cylinder, 17...hopper-shaped guiding means, 25...first grain receiving trough.

Claims (1)

[Scope of utility model registration request] A sorting cylinder is installed in the lower part of a handling chamber which houses a handling cylinder and is provided with a crimp net except for the dust inlet at one end of the handling cylinder, and the axis of the sorting cylinder extends in a substantially horizontal direction. A screen or a perforated plate is stretched around the outer peripheral surface of the sorting cylinder in a cylindrical shape, and the air inside the sorting cylinder is sucked into one of the left and right sides of the sorting cylinder. A cross-flow fan that discharges air into the atmosphere is arranged approximately parallel to the sorting cylinder,
Further, the sorting cylinder is provided with a driving means configured to rotate in a direction in which the upper surface of the sorting cylinder moves in the direction of the cross-flow fan, and between the sorting cylinder and the handling chamber, A guide means for guiding threshed grains from the crimp net and the dust feeding port in the handling chamber to the outer peripheral surface of the sorting cylinder is provided, and a first grain receiving gutter is provided below the sorting cylinder, and, The roughness of the mesh or perforated plate of the sorting cylinder,
A threshing machine characterized in that the lower part of the crimp net has a fine mesh that allows only grains to pass through, while the lower part of the dust inlet has a large mesh. Sorting device.