JPH0221894Y2 - - 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 below the handling chamber that extends in the axial direction of the handling cylinder and swings back and forth in that direction. It is well known that the Japanese government is equipped with a Karakin fan and a suction fan at the upper end (for example, in the
49-5027).

[The problem that the idea aims to solve]

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

The present invention uses a cylindrical mesh cylinder or perforated cylinder for sorting grain threshing, thereby simplifying the structure, reducing size and weight, reducing driving power, and reducing vibration and noise. This aims to reduce the number of grains that disappear together with the sorting wind, that is, the third loss of grains.

[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 air is provided to extend in the axial direction of the sorting cylinder, and the sorting cylinder is provided with a suction chamber so that the upper surface of the sorting cylinder rotates in a direction in which the upper surface of the sorting cylinder moves in the direction of the suction chamber. On the other hand, on the other side of the left and right sides of the sorting cylinder opposite to the suction chamber, there is provided a grain flow that slopes diagonally downward from the handling chamber toward the outer peripheral surface of the sorting cylinder. A grain receiving gutter is provided below the sorting cylinder, and a screen is provided above the grain flow plate and is inclined diagonally downward toward the outer peripheral surface of the sorting cylinder. of,
The structure is such that they are provided at appropriate intervals with respect to the upper surface of the grain board.

[Functions and effects of the idea]

In this configuration, the grain threshing from the handling chamber first falls onto the screen disposed at the bottom of the handling chamber, and the relatively large straw waste during the threshing is carried around the outer periphery of the sorting cylinder along the top surface of the screen. On the other hand, grains, small dust, etc. pass through the holes of the screen and fall onto the grain flow board, and are guided along the grain flow board to the outer peripheral surface of the sorting cylinder. The dust passes through the mesh or perforated plate on the outer circumferential surface of the screen and enters the sorting cylinder, and the dust is sorted by riding the air flow from the sorting cylinder to the suction chamber, and the grains are separated from the grains below the sorting cylinder. After entering the grain catcher, it is discharged outside the machine.

On the other hand, the straw waste guided to the outer circumferential surface of the sorting cylinder by the screen does not enter the sorting cylinder through the screen or perforated plate in the sorting cylinder, but adheres to the surface of the screen or perforated plate. The surface of the screen or perforated plate is moved into the suction chamber by the rotation of the sorting cylinder, and the centrifugal force accompanying the rotation of the sorting cylinder and the flow of air from the sorting cylinder to the suction chamber After being peeled off, it is discharged from the suction chamber to the outside of the machine via a suction fan.

As described above, since the present invention sorts the threshed grains from the handling chamber by rotating the sorting cylinder and suctioning the suction fan, unlike the above-mentioned conventional method, it is a swinging type, and Compared to a system that requires two fans, it has a simpler structure, is smaller, and lighter in weight, and it only requires rotating the sorting cylinder and driving one suction fan. , vibration and noise can be significantly reduced, and driving power can also be significantly reduced.

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.

When the grain removal from the handling chamber is guided to the screen or perforated plate on the outer peripheral surface of the sorting cylinder, the removed grain is concentrated in one place in the circumferential direction of the screen or perforated plate. The reason for this is that during this threshing, the grains are placed on large pieces of straw attached to the surface of the net or perforated plate, and in this state, they are transferred to the suction chamber by the rotation of the sorting cylinder. As a result, the amount of grain lost from the intake chamber to the outside of the machine increases.

In contrast, the present invention provides a screen configured to be inclined diagonally downward toward the outer circumferential surface of the sorting cylinder above the grain flow board at an appropriate distance from the upper surface of the grain flow board. With this configuration, the large straw waste from the threshed grains from the handling room flows down along the screen, while the grains from the threshed grains flow down the screen. Later, the grains flow down along the grain plate, and when the grains and large straw waste of the threshing are guided to the screen of the sorting cylinder or the perforated plate, the grains are Alternatively, since the grains can be guided to a part of the perforated plate where large straw waste has not previously adhered, the grains can quickly pass through the mesh or the perforated plate and enter the sorting cylinder. . As a result, it is possible to reliably reduce the third loss of grains, that is, the grains that disappear from the suction chamber to the outside of the machine due to the rotation of the sorting cylinder.

〔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 at the bottom of the handling barrel 3 there is 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 handling barrel 3.

Reference numeral 8 designates a suction chamber formed on 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. Inside the suction chamber 8, a cross-flow fan 9 is provided.
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 denotes a sorting cylinder whose outer circumferential surface is covered with a cylindrical mesh or perforated plate through which only grains can pass. The sorting cylinder 11 is disposed at a lower part of the cylinder so as to be substantially parallel to the axis of the handling cylinder 3.
The support shaft 12 is provided with a driving means (not shown) for rotationally driving the upper surface of the sorting cylinder 11 in a direction toward the suction chamber 8.

A handling chamber 2 is provided between the sorting cylinder 11 and the handling chamber 2 on the opposite side of the suction chamber 8.
A grain board 19 is provided which is inclined diagonally downward from the handling chamber 2 toward the outer peripheral surface of the sorting cylinder 11, and a screen 20 which is also inclined diagonally downward from the handling chamber 2 toward the outer peripheral surface of the sorting cylinder 11. are arranged approximately parallel to the upper surface of the grain flow board 19 at a portion higher than the upper surface by an appropriate dimension. An auxiliary grain board 21 is provided below the grain flow board 19, approximately parallel to the grain flow board 19 and appropriately spaced therefrom, and whose lower edge extends into the outer peripheral surface of the sorting cylinder 11.

Further, a grain receiving trough 15 is provided at the lower part of the sorting cylinder 11 and is equipped with a screw conveyor 14 extending along the axial direction of the sorting cylinder 11.

The grain receiving gutter 15 is provided with a partition plate 18 approximately midway in its longitudinal direction, and the front side thereof is the most grain receiving gutter port 15', and the rear side, that is, the dust feeding port 5 side is the partition plate 18. The screw conveyor 14 also has a first screw conveying the first grain in the first grain receiving trough 15' to a 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, so that the first grain is removed from the machine. While removing it, put the second grain into the second reduction thrower 17.
It is configured so that the water is returned to the inside of the handling room 2.

In this configuration, threshed grains such as grains and straw waste threshed by the handling drum 3 from the grain culm being transported in the feed chain 7 first fall onto the screen 20, and the large straw of the threshed grains is threshed by the handling drum 3. Debris, etc. is removed along the top surface of the screen 20 through the opening 1 at its lower end.
3 to the sorting cylinder 11, while the grains and small dust of the threshed grains pass through the screen 20 and fall onto the upper surface of the grain flow board 19.
An opening 13 along the grain board 19 at its lower end
from there to the sorting cylinder 11.

The grains and dust guided to the sorting tube 11 by the grain flow plate 19 pass through the mesh or perforated plate on the outer circumferential surface of the sorting tube 11 and enter the sorting tube 11. The large straw waste guided to the sorting tube 11 at 20 is carried toward the suction chamber 8 as the sorting tube 11 rotates while remaining on the surface of the screen or perforated plate.

At this time, the suction air to the cross-flow fan 9 in the suction 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 it enters the sorting cylinder 11. Small dust particles are
The straw is sorted by being sucked into the suction chamber 8 from inside the sorting cylinder 11 by the suction wind into the suction chamber 8, and large straw waste on the surface of the screen or perforated plate is also removed from the inside of the sorting cylinder 11. The cross-flow fan 9 is separated from the surface of the screen or perforated plate by the suction wind that passes through the mesh of the screen or perforated plate from the inside to the outside, and the centrifugal force accompanying the rotation of the sorting cylinder 11. The dust is discharged to the outside of the machine through the dust discharge passage 10.

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.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of the threshing machine, FIG. 2 is a step view taken along the - line in FIG. be. 1... Machine frame, 2... Handling room, 3... Handling trunk, 6...
Crimp net, 7... Feed chain, 8... Suction chamber, 9... Cross flow fan, 11... Sorting cylinder, 1
5... Grain receiving trough, 19... Grain flow board, 20... Screen.

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 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; 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,
On the other side of the left and right sides of the sorting cylinder opposite to the suction chamber, there is provided a grain flow board that is inclined diagonally downward from the handling chamber toward the outer peripheral surface of the sorting cylinder. Grain receiving troughs are provided below, and a screen configured to be inclined diagonally downward toward the outer peripheral surface of the sorting cylinder is placed above the grain flow plate on the upper surface of the grain flow plate. A sorting device for a threshing machine, characterized in that the sorting device is provided at appropriate intervals.