JPH0226280Y2 - - 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 cylinder and swings back and forth below the handling chamber, while a swing sorting mechanism is provided below the starting end of the swinging sorting mechanism. It is well known that the Karakin fan was equipped with a suction fan for dust removal at the upper end of the fan (for example, the
49-5027, etc.).

[The problem that the idea aims to solve]

However, the conventional oscillating sorting mechanism here requires a feed pan and grain sieve for sorting threshed grains during threshing, and a stroke rack or chaf sieve for sorting waste during threshing. In addition, since two fans, a Karasaki fan and a suction fan, are required, the structure is not only extremely complicated, but also large and weighty. There is a problem in that a large drive power is required to drive both fans, and large vibrations and noise are generated by the swinging of the swinging sorting mechanism and the driving of both fans.

The present invention uses a cylindrical mesh cylinder or a perforated cylinder for sorting grain threshing, thereby simplifying the structure, reducing size and weight, reducing driving power, reducing vibration and noise. The purpose is to reduce the

[Means to solve the problem]

In order to achieve this purpose, the present invention installs a sorting cylinder at the bottom of a handling chamber containing a handling cylinder so that the axis of the sorting cylinder extends in a substantially horizontal direction. A net or perforated plate that allows only grains to pass through is stretched around the outer circumferential surface of the sorting tube, and the air inside the sorting tube is sucked into the atmosphere on one of the left and right sides of the sorting tube. A suction chamber with a suction fan configured to emit water is provided to extend in the axial direction of the sorting cylinder, and the sorting cylinder is further provided with a suction chamber that rotates in a direction in which the upper surface of the sorting cylinder moves in the direction of the suction chamber. A driving means is provided between the sorting cylinder and the handling chamber, and a guiding means is provided between the sorting cylinder and the handling chamber to guide the threshed grains from the handling chamber to the outer peripheral surface of the sorting cylinder.
A grain receiving gutter is provided below each of the sorting cylinders.

[Functions and effects of the idea]

In this configuration, the threshed grains that have fallen from the handling chamber are guided to the outer circumferential surface of the net or perforated plate stretched over the sorting cylinder through the guiding means, and the grains and small dust are removed from the threshed grains. The dust passes through a screen or perforated plate and enters the sorting cylinder, and the dust is sorted out by riding the air flow from the sorting cylinder to the suction chamber, and the grains are collected in the grain receiving gutter below the sorting cylinder. is ejected from the aircraft.

On the other hand, large straw waste etc. from the threshed grains from the handling room do not enter the sorting cylinder through the screen or perforated plate of the sorting cylinder, but remain attached to the surface of the screen or perforated plate in the sorting cylinder. It moves into the suction chamber due to the rotation of the body, and due to the centrifugal force accompanying the rotation of the sorting cylinder and the flow of air from the sorting cylinder to the suction chamber,
After peeling off from the surface of the screen or perforated plate, it is discharged from the suction chamber to the outside of the machine via the suction fan, so it is possible to prevent clogging of the screen or perforated plate in the sorting cylinder. Can be reduced.

In this way, the present invention removes grain from the handling chamber by rotating the sorting cylinder and suction by the suction fan.
Because it is a sorting device, it has a simpler structure, smaller size, and lighter weight than the conventional type that requires two swinging fans. Since it is sufficient to rotate the body and drive only one suction fan, it is possible to significantly reduce vibration and noise, as well as achieve a significant reduction in driving power.

Moreover, in the case where the rotary sorting cylinder is used for sorting grains in the present invention, as mentioned above,
A suction chamber with a suction fan is formed on the side of the sorting cylinder so as to extend in the axial direction of the sorting cylinder, while the upper surface of the sorting cylinder moves in the direction of the suction chamber. By using a structure that includes a driving means that rotates in the direction of When moved indoors, the sorting tube can be removed from the mesh or the perforated plate by the air flowing from the sorting tube toward the suction chamber and the centrifugal force accompanying the rotation of the sorting tube. It can significantly reduce clogging that occurs in the mesh or perforated plate in the body,
Sorting work can be continued for long periods of time.

Furthermore, if a cross-flow fan having an axis substantially parallel to the axis of the sorting cylinder is used as the suction fan in the suction chamber, the sorting action and the clogging prevention action can be performed in the axial direction of the sorting cylinder. Since it can be made substantially uniform over the entire length, it is possible to further improve the sorting ability and sorting efficiency.

〔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 whose axis is approximately horizontal, and a lower part of the handling barrel 3 has an opening opposite to the grain culm entrance 4 to the handling chamber 2. A crimp net 6 is stretched except for the dust inlet 5 on the side, and
A feed chain 7 is provided on the upper side surface of the machine frame 1 to convey the grain from the grain inlet 4 along the axial direction of the handling barrel 3.

Reference numeral 8 indicates a suction chamber formed at the lower side of the handling chamber 2 so as to extend in a direction substantially parallel to the axis of the handling cylinder 3, and within the suction chamber 8 is a cross-flow fan 9.
is provided with its axis substantially parallel to the axis of the handling cylinder 3, and the length of the cross-flow fan 9 in the axial direction is approximately the same as the length of the handling cylinder 3 in the axial direction, After the air in the machine frame in the lower part of the handling chamber 2 is sucked, it is configured to be discharged to the outside of the machine from a dust discharge passage 10 provided on the side surface of the suction chamber 8.

Reference numeral 11 designates a sorting cylinder made of a cylindrical mesh or perforated plate that allows only grains to pass through on its outer circumferential surface. It is arranged in the lower part of the chamber 2 so as to be substantially parallel to the axis of the handling cylinder 3, and on the support shaft 12 of the sorting cylinder 11, the sorting cylinder 11 is provided.
A driving means (not shown) is provided to rotate the upper surface of the suction chamber 8 in a direction in which it moves toward the suction chamber 8 .

The upper surface of the sorting cylinder 11 and the handling chamber 2
A guiding means 13 such as a hopper is provided between the crimp net 6 and the dust inlet 5 to guide the threshed grains to the outer peripheral surface of the sorting cylinder 11. At the bottom, there is a sorting cylinder 11
A grain receiving trough 15 having a built-in screw conveyor 14 extending in the axial direction of the grain receiving trough 15 is provided.

In addition, a partition plate 18 is provided in the grain receiving gutter 15 at a substantially midway point in the longitudinal direction, and the front side thereof is the most grain receiving gutter 15', and the rear side, that is, the dust feeding port 5 side. are respectively formed in the second grain receiving trough 15'', while the screw conveyor 14 is also formed into the first screw which conveys the first grain in the first grain receiving trough 15' to the grain outlet 16 at the front end. 1
4' and a second screw 14 that conveys the second grain in the second grain receiving trough 15'' to the second reducing thrower 17 at the rear end and removes the first grain from the machine. , the second grain is returned from the second return thrower 17 into the handling chamber 2.

In this configuration, the grains, straw waste, etc. threshed by the handling cylinder 3 from the grain culm being transported in the feed chain 7 are transferred to the sorting cylinder 1 through the guiding means 13.
1, grains and smaller dust enter the sorting cylinder 11 through the mesh or perforated plate, while straw waste larger than the grains enters the screening cylinder 11. As the sorting cylinder 11 rotates, it is carried toward the suction chamber 8 while being placed on the surface of the screen or perforated plate. At this time, the suction air to the cross-flow fan 9 in the suction chamber 8 passes through the mesh or perforated plate from the inside of the sorting cylinder 11 from the inside to the outside, so that it enters the sorting cylinder 11. Small dust particles are sorted out by being sucked into the suction chamber 8 from the sorting tube 11 by the suction wind into the suction chamber 8, and straw waste on the surface of the screen or perforated plate is also sorted out by the sorting tube. Suction wind that passes through the mesh or perforated plate from the inside of the body 11 from the inside to the outside;
And by the centrifugal force accompanying the rotation of the sorting cylinder 11,
After being separated from the surface of the screen or perforated plate, the dust is discharged outside the machine from the dust discharge passage 10 via the cross-flow fan 9. On the other hand, the grains that have entered the sorting cylinder 11 pass through the mesh or perforated plate again and fall into the grain receiving trough 15 below.

As shown in FIG. 3, the rotation axis of the cross-flow fan 9 in the suction chamber 8 is arranged so as to be appropriately above the rotation axis 12 of the sorting cylinder 11 by a height dimension H, and the sorting cylinder If the suction air passage from the body 11 to the cross-flow fan 9 is configured to be formed diagonally upward, the degrain peeled off from the surface of the screen or perforated plate of the sorting cylinder 11 will flow upward at the bottom of the suction air passage. Since the grains can be air-sorted to remove straw and dust with a light specific gravity from the threshed grains while flowing down on the sloped flow board 19, the sorting performance can be further improved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional front view of a threshing machine, FIG. 2 is a sectional view taken along the - line of FIG. 1, and FIG. 3 is a partially cutaway sectional view of another example. 1... Machine frame, 2... Handling room, 3... Handling trunk, 6...
Crimp net, 7... Feed chain, 8... Suction chamber, 9... Cross-flow fan, 10... Dust discharge passage, 11... Sorting cylinder, 12... Rotating shaft of the sorting cylinder, 13... Guide Pulling means, 15...grain catcher.

Claims (1)

[Scope of claim for utility model registration] (1) A sorting cylinder is placed at the bottom of a handling chamber containing a built-in 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 circumferential surface of the sorting cylinder to allow only grains to pass through. A suction chamber with a suction fan configured to suck the air inside the sorting cylinder and release it to the atmosphere is provided on one side of the left and right sides of the sorting cylinder so as to extend in the axial direction of the sorting cylinder, and 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 suction chamber. A sorting device for a threshing machine, characterized in that a guiding means for guiding threshed grains to the outer peripheral surface of a sorting cylinder is provided, and a grain receiving gutter is provided below the sorting cylinder. (2) The threshing machine according to claim 1 of the utility model registration claim, characterized in that the suction fan is a cross-flow fan disposed in the suction chamber substantially parallel to the sorting cylinder. Sorting device.