JPH0236362Y2 - - 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 and its problems]

Conventionally, this type of sorting device has been used, for example, in the 1980-
As described in Publication No. 150342, etc., a swing-type sorting mechanism is provided below the handling chamber that extends in the axial direction of the handling cylinder and swings back and forth in that direction. A chisel fan is installed at the lower part of the starting end of the dynamic sorting mechanism, and a suction fan for dust removal is installed at the upper end of the dynamic sorting mechanism.

However, the swing-type sorting mechanism here requires a feed pan and grain sieve for sorting threshed grains, and a stroke rack or chaff sieve for sorting waste, and also requires two units. Since a fan is required, the structure is not only extremely complicated, but also the weight increases significantly.Furthermore, a large driving force is required for the swinging of the swinging type sorting mechanism, and the swinging causes Large vibrations and noise were generated.

The object of the present invention is to provide a sorting device that solves this problem.

[Means to solve the problem]

In order to achieve this objective, the present invention arranges a plurality of sorting shelves in a multi-layered manner at the bottom of a handling chamber containing a built-in handling cylinder, with appropriate spacing between each sorting shelf. , is configured to guide the threshing from the handling chamber to the upper surface of the sorting shelf at the top level, while one side edge in the longitudinal direction of each sorting shelf,
Each of the sorting shelves is tilted so that the other side edge in the longitudinal direction thereof is lower than the one side edge, with the one side edge and the axis thereof being substantially parallel to the suction side of a cross-flow fan. , further, the other side edge of the sorting shelf in the longitudinal direction is configured in a step-like manner such that the other side edge of the lower sorting shelf protrudes from the other side edge of the upper sorting shelf; At least one sorting shelf other than the lowest sorting shelf is provided with means for leveling the threshing on the other side edge in the longitudinal direction.

[Effect]

In this configuration, the threshed grains falling from the handling room are guided to the upper surface of the uppermost sorting shelf of each sorting shelf, slide down the upper surface of the uppermost sorting shelf along its slope, and then move to the other side edges. The other side edge in the longitudinal direction of each sorting shelf is sequentially dropped in a step-like manner, such as falling from one end to the top surface of the next sorting shelf, while the suction air to the cross-flow fan is This suction air crosses the grain threshing on the way from the upper sorting shelf to the lower sorting shelf, and sweeps the upper surface of each sorting shelf along its slope. Since the flow is in the opposite direction to the threshing, which slides down, light dust such as culm cuttings during threshing is separated as it is carried by the suction wind and sucked into the cross-flow fan.
Furthermore, this separation action is performed for each of the plurality of sorting shelves.

On the other hand, by providing a means for leveling the threshing on at least one of the sorting shelves except for the lowest sorting rack, the layer thickness of the threshing grain falling in a stepwise manner is approximately equalized. In other words, the sorting can be performed uniformly in all parts, and local defects in sorting can be prevented, so the overall sorting function can be greatly improved.

〔Example〕

Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. In the drawings, reference numeral 1 indicates a machine frame of a threshing machine, and a handling chamber 2 defined inside the machine frame 1 is equipped with a handling barrel 3. A crimp net 6 is installed in the lower part of the body 3 except for the dust inlet 5 on the side opposite to the grain culm entrance 4 into the handling room 2, and a crimp net 6 is provided on the upper side of the machine frame 1. A feed chain 7 is provided to convey the culm from the grain culm entrance 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 length in the axial direction is substantially the same as the axial length of the handling cylinder 3,
Air inside the machine frame in the lower part of the handling room 2 is sucked and discharged to the outside of the machine through a dust discharge passage 10 provided on the outer surface of the machine frame 1 so as to open downward.

In the machine frame 1, a plurality of sorting shelves 11 extending in the axial direction of the cross-flow fan 8, that is, in the axial direction of the handling cylinder 3, are provided at the lower part of the handling chamber, with an appropriate size interval between each sorting shelf 11. The grains are arranged in a multi-layered manner, and between the uppermost sorting shelf 11 of each sorting shelf 11 and the handling chamber 2, the grain threshing from the crimp net 6 and the dust inlet 5 is carried out at the uppermost stage. A hopper 12 and a guide plate 13 are provided which are guided to the upper surface of the sorting shelf 11.

Furthermore, a grain receiving trough 15 having a screw conveyor 14 extending in the axial direction of the handling cylinder 3 is provided at the lower part of the sorting shelf 11.

Then, one longitudinal edge of each sorting shelf 11 along the axis of the handling cylinder 3 is connected to the cross-flow fan 8, and the suction air to the cross-flow fan 8 passes through the interval between the respective sorting shelves 11. While the sorting shelves 11 are tilted so that the other side edge in the longitudinal direction is lower than the one side edge, and
The other side edge in the longitudinal direction of each sorting shelf 11 is configured in a step-like manner such that the other side edge of the lower sorting shelf projects more than the other side edge of the upper sorting shelf.

Furthermore, at least one sorting shelf 11 other than the lowest sorting shelf among the sorting shelves 11 is provided with a flat plate 19 extending in the direction of the other side edge in the upper part of the other side edge in the longitudinal direction. (However, the drawing shows the case where the leveling plate 19 is provided for all the sorting shelves 11).

The grain receiving trough 15 is provided with a partition plate 18 approximately midway in its longitudinal direction, so that the front side is the first grain receiving trough 15' and the rear side is the second grain receiving trough 15'.
5'' respectively, and the screw conveyor 14 also has a first screw 14' which conveys the first grain in the first grain receiving trough 15' to a grain outlet 16 at the front end, and a second screw The second grain in the grain receiving trough 15'' is formed with the second screw 14'' which conveys it to the second reducing thrower 17 at the rear end, and the first grain is removed from the machine, while the second grain is transferred to the second reducing thrower 17 at the rear end. is configured to be returned into the handling chamber 2 from the second return thrower 17.

In this configuration, grains such as grains and culms that are threshed by the handling drum 3 from grain culms being conveyed in the feed chain 7 are passed through the hopper 12 and the guide plate 13 to the top surface of the sorting shelf 11 in the uppermost stage. Each sorting shelf 1 slides down the top surface of the topmost sorting shelf 11 along its slope, and then falls from the other side edge to the top surface of the next sorting shelf 11.
While the other side edge in the longitudinal direction of the sorting shelves 1 sequentially falls in a stepwise manner, the suction air to the cross-flow fan 8 passes through the interval between each sorting shelf 1 and is sucked into the cross-flow fan 8. This suction air crosses the grain threshing while falling from the upper sorting shelf 11 to the lower sorting shelf 11, and also moves in the opposite direction to the threshing that slides down the upper surface of each sorting shelf 11 along its slope. Because of the flow, light dust such as culm cuttings during threshing is separated by riding on the suction wind and being sucked into the cross-flow fan 8. Moreover, this separation action is performed for each of the plurality of sorting shelves 11. be exposed.

On the other hand, the amount of threshing from the crip net 6 and the dust port 5 is not uniform in the axial direction of the body 3, but from the other side edge of the long direction on each selection board 11. The layer thickness of the falling threshing grains is also not uniform in the longitudinal direction, and in places where the layer thickness is thick, sufficient sorting will not be performed.

In contrast, the present invention provides a leveling plate 19 for at least one sorting shelf 11 other than the lowest sorting shelf 11 among the sorting shelves 11, so that the thickness of the layer of threshed grain falling in a stepwise manner is increased. Since the grain size can be leveled approximately equally by the leveling plate 19, sorting can be performed uniformly at each location.

In this case, it is more effective to make the leveling plate 19 rotatable or vertically movable as shown in FIG. 3 to adjust the distance between it and the sorting shelf 11.
Alternatively, instead of using a flat plate, a rod-shaped brush 19a extending in the longitudinal direction may be used, as shown in FIG. Alternatively, as shown in FIG. 6, it may be configured as a cylindrical brush roller 19b that rotates in the direction, or as shown in FIG. 19
It goes without saying that other leveling means may be used, such as bringing the lower end of c into contact with its weight, or bringing a curtain body made of an elastic plate such as rubber into contact with elasticity.

[Effect of idea]

Therefore, according to the present invention, grains can be reliably sorted without the need for a swinging sorting mechanism and two fans as in conventional sorting equipment, so the structure is significantly improved. It is simple and can be made smaller and lighter than conventional ones, and has the effect of reducing vibration and noise.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a vertical front view of the threshing machine, FIG. 2 is a sectional view taken from the side of FIG. 1, FIG. 3 is an enlarged view of the main part of FIG. 2, and FIG. 5 and 6 are diagrams showing separate embodiments. 1... Machine frame, 2... Handling room, 3... Handling trunk, 7...
Feed chain, 8...Cross flow fan, 11...
Sorting shelf, 14... Screw conveyor, 15...
...Grain catcher, 19... Leveling plate.

Claims (1)

[Scope of utility model registration request] A plurality of sorting shelves are arranged in a multi-layered manner at the bottom of the handling chamber containing a built-in handling barrel, with appropriate spacing between each sorting shelf, and the upper surface of the uppermost sorting shelf is While the structure is configured to guide threshing from the handling chamber, one longitudinal edge of each sorting shelf is directed toward the suction side of a cross-flow fan whose axis is substantially parallel to the one edge. and tilt each of the sorting shelves so that the other side edge in the longitudinal direction is lower than the one side edge, and further, the other side edge in the longitudinal direction of each sorting shelf is tilted so that the other side edge in the longitudinal direction is lower than the other side of the lower sorting shelf. The edge is configured in a step-like manner so as to protrude from the other side edge of the upper sorting shelf, and at least one sorting shelf other than the lowest sorting shelf among the sorting shelves has a border on the other side in the longitudinal direction. A sorting device for a thresher comprising a means for leveling the threshed grain at the edge.