JPH0343961Y2 - - 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 objective, the present invention has a sorting cylinder mounted at the bottom of a handling chamber containing a handling cylinder so that the axis of the sorting cylinder extends approximately horizontally, and the outer circumference of the sorting cylinder. A screen or perforated plate that allows only grains to pass through is stretched in a cylindrical shape on the surface, and the air inside the sorting tube is sucked into one of the left and right sides of the sorting tube and released into the atmosphere. A cross-flow fan configured to do so is disposed substantially parallel to the sorting cylinder, and further configured to rotate in a direction in which the upper surface of the sorting cylinder moves in the direction of the cross-flow fan. A driving means is provided between the sorting cylinder and the handling chamber, and a guide means is provided below the sorting cylinder for guiding the threshed grains from the handling chamber to the outer peripheral surface of the sorting cylinder. Grain receiving troughs are each provided, and a plate-shaped sorting plate is provided at a portion between the sorting cylinder and the cross-flow fan, so that the sorting plate extends from the sorting cylinder toward the cross-flow fan. The configuration was set up so that

[Functions and effects of the idea]

In this configuration, the threshed grains that have fallen from the handling chamber are guided through the guiding means to the outer circumferential surface of the net or perforated plate stretched over the sorting cylinder, and the grains and small dust of the threshed grains are removed by the mesh. Alternatively, the dust passes through a perforated plate and enters the sorting cylinder, and the dust is sorted by riding the air flow from the sorting cylinder to the cross-flow fan, and the grains enter the grain receiving trough below the sorting cylinder. It is then 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. The surface of the net or perforated plate is moved toward the cross-flow fan by the rotation of the body, and the centrifugal force accompanying the rotation of the sorting cylinder and the flow of air from the sorting cylinder to the cross-flow fan Since the particles are separated from the filter and then released into the aircraft body via the cross-flow fan, clogging of the mesh or perforated plate in the sorting cylinder can be reduced.

In this case, if a plate-shaped sorting plate is not provided in a portion between the sorting cylinder and the cross-flow fan, the rotation of the sorting cylinder generates water along its circumferential direction. The wind crosses the flow of air sucked into the crossflow fan from the sorting tube and entrains the air sucked into the crossflow fan from the sorting tube. This will hinder the suction of dust, straw, etc.

In contrast, in the present invention, a plate-shaped sorting plate is provided between the sorting cylinder and the cross-flow fan so that the plate-shaped sorting plate extends from the sorting cylinder toward the cross-flow fan. The wind generated along the circumference of the sorting cylinder as it rotates hits the top surface of the sorting plate and is guided in the direction toward the cross-flow fan, so that the air flows across the screen from inside the sorting cylinder. Since the air flow to the flow fan can be prevented from being caught in the wind generated as the sorting cylinder rotates, dust, straw, etc. can be smoothly sucked from the sorting cylinder to the cross-flow fan. This is possible.

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 mesh or perforated plate in the rotating sorting cylinder can be prevented, and cross-flow from the sorting cylinder can be prevented. Because it allows smooth suction of cobs and straw waste into the fan,
This has the effect of reliably improving sorting ability and 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 The length of the handling chamber 2 is approximately the same as the axial length of the handling cylinder 3.
The air inside the machine frame at the bottom of the machine frame 1 is sucked, and the machine frame 1
The dust is discharged to the outside of the machine through a dust discharge passage 10 provided on the outer surface of the machine so as to open downward.

Reference numeral 11 designates a double cylindrical sorting tube disposed at the lower part of the handling chamber 2, and the outer tube 12 is a net or a perforated plate, etc., which allows grains to pass through but large straw waste does not. While the inner cylinder 1 is formed into a porous shape,
3 is formed into a porous shape such as a net or perforated plate that prevents grains from passing through, and longitudinal fins 23 are formed on the outer peripheral surface of the inner cylinder 13 along its rotation axis 14 at appropriate intervals in the circumferential direction. Provided so as to protrude radially outward.

Both sorting cylinders 11 are arranged concentrically on a horizontal rotating shaft 14 arranged parallel to the rotating shaft of the cross-flow fan 8 on the suction side thereof, and have a pulley 15 fixed thereto to rotate them in opposite directions. Rotating axis 1
4, while the inner cylinder 13 is fixed to the rotary shaft 14.
The outer cylinder 12 is rotatably supported, a pulley 16 is fixed to one end of the outer cylinder 12, and the outer cylinder 12 is rotated so that the upper peripheral surface side of the cylinder faces toward the suction side of the cross-flow fan 8. The inner cylinder 13 is rotated in the opposite direction.

A funnel-shaped guide means 17 is provided between the sorting cylinder 11 and the handling chamber 2 to guide the threshed grains falling from the crimp net 6 to the outer peripheral surface of the outer cylinder 12. Grain receiving troughs 19 each equipped with a spiral conveyor 18 are disposed at the bottom of the cylinders 11, while a plate-shaped sorter is disposed between the sorting cylinders 11 and the suction side of the cross-flow fan 8. The plate 24,
The sorting plate 24 is provided so as to extend from the outer cylinder 12 of the sorting cylinder 11 toward the cross-flow fan 8.

The grain receiving trough 19 is provided with a partition plate approximately midway in its longitudinal direction, and the front side thereof is the first grain receiving trough 19', and the rear side is the second grain receiving trough 19''. On the other hand, the spiral conveyor 18 also has a first spiral 18' which conveys the first grain in the first grain receiving trough 19' to the front end grain outlet 21, and a second grain receiving trough 19. The second grain is transferred to the second reducing thrower 22 at the rear end of the machine, and the first grain is removed from the machine, while the second grain is transferred to the second reducing thrower 22 at the rear end. It is configured to return the water from the thrower 22 into the handling chamber 2.

In this configuration, grains such as grains and culm cuts that are threshed by the handling cylinder 3 from the grain culm being transported by the feed chain 7 are guided from the guiding means 17 to the upper surface of the outer cylinder 12 of the sorting cylinder 11. There, grains and dust fall towards the outer circumferential surface of the inner tube 13 from the net or perforated plate in the outer tube 12, while large straw waste, etc. fall onto the outer circumferential surface of the net or perforated plate in the outer tube 12. It is carried to the suction side of the cross-flow fan 8 in an attached state.

At this time, the sorting cylinder 11 and the crossflow fan 8
The sorting cylinder 11 is separated by the sorting plate 24 provided between the
As the wind rotates, the wind generated along the circumferential direction collides with the upper surface of the sorting plate 24 and is guided in the direction toward the cross-flow fan 8. Since it is possible to prevent the suction wind sucked into the cross-flow fan 8 from being drawn in,
The straw waste adsorbed on the outer peripheral surface of the net or perforated plate in the outer cylinder 12 is removed by the sorting cylinder 11 as described above.
The suction air drawn into the cross-flow fan 8 from inside easily separates from the outer peripheral surface of the mesh or perforated plate in the outer cylinder 12 and is discharged to the outside of the machine through the cross-flow fan 8.

Further, the dust 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 the suction wind toward the cross-flow fan 8. The grains fall along the outer periphery of the inner cylinder 13 as it rotates, and are guided to the grain receiving trough 19 through holes in the lower peripheral surface of the outer cylinder 12.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal side view of a threshing machine, and FIG. 2 is a sectional view taken along the - line in FIG. 1. 1... Machine frame, 2... Handling room, 3... Handling trunk, 8...
Crossflow fan, 11... Sorting cylinder, 12... Outer cylinder, 17... Guidance means, 19... Grain receiver, 24
...Sorting board.

Claims (1)

[Scope of utility model registration request] A sorting cylinder is installed in the lower part of the handling chamber containing the handling cylinder so that the axis of the sorting cylinder extends approximately horizontally, so that only grains pass through the outer peripheral surface of the sorting cylinder. A cylindrical net or perforated plate is stretched,
A cross-flow fan that sucks the air inside the sorting cylinder and releases it to the atmosphere is disposed on one side of the left and right sides of the sorting cylinder, and is arranged substantially parallel to the sorting cylinder, and The 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;
A guide means for guiding threshed grains from the handling chamber to the outer peripheral surface of the sorting cylinder is provided between the sorting cylinder and the handling chamber, and a grain receiving gutter is provided below the sorting cylinder. , and a plate-shaped sorting plate is provided at a portion between the sorting cylinder and the cross-flow fan so that the sorting plate extends from the sorting cylinder toward the cross-flow fan. Threshing machine sorting device.