JPH0130032Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION 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.

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. Each fan is equipped with a suction fan for removing dust at the upper end of the fan. However, the swing sorting mechanism here includes a feed pan and a grain sieve for sorting threshed grains, and a grain sieve for sorting out dust. In addition to the need for a stroke rack or a chaf sheave, the need for two fans not only significantly complicates the construction but also significantly increases the weight.
Moreover, a large driving force is required to swing the swinging sorting mechanism, and the swinging generates large vibrations and noise.

In the present invention, a plurality of inclined sorting shelves are provided in a multi-layered manner at the bottom of the handling chamber, and the grain threshing from the handling chamber falls down the other edge of the lower side of each sorting shelf in a step-like manner. By configuring one side edge of each sorting shelf on the high side to look into the suction side of the cross-flow fan and sucking air from between each sorting shelf, the other side edge of each sorting shelf can be used as a staircase. Only the light waste dust that falls during grain threshing is sucked up by the cross-flow fan along with the wind, eliminating the swinging sorting mechanism and Karataku fan in the conventional sorting equipment. A sieve line is provided on any sorting shelf to ensure that even large dust particles are sucked into the cross-flow fan, improving the sorting performance.

The present invention will be explained below with reference to drawings of embodiments. 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 cylinder 3. A crimp net 6 is installed in the lower part except for the dust inlet 5 on the side opposite to the grain culm entrance 4 to the handling room 2, and on the upper side of the machine frame 1, the grain culm is A feed chain 7 is provided to convey the feed from the 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 lengths in the axial direction are equal to the handling chamber 2. The air inside the machine frame in the lower part of the handling room 2 is sucked from a dust discharge passage 10 which is approximately the same as the axial length of the body 3 and is opened downward on the outer surface of the machine frame 1. It is configured to be ejected outside the aircraft.

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 arranged at the lower part of the handling chamber 2, with an appropriate interval between each sorting shelf. The crimp net and the threshing from the dust inlet 5 are arranged between the uppermost sorting shelf 11 and the handling chamber 2. A hopper 12 and a guide plate 13 are provided to guide the upper sorting shelf 11 onto the upper sorting shelf 11, and one longitudinal side edge of each sorting shelf 11 along the axis of the handling cylinder 3 is connected to the cross-flow fan 8. The suction air to the fan 8 is made to pass through the space between the sorting shelves 11..., and each of the sorting shelves 11... is tilted so that the other longitudinal edge thereof is lower than the one longitudinal edge; In addition, the other longitudinal edge of each sorting shelf 11...
The other longitudinal side edge of the lower sorting shelf is configured in a step-like manner so as to protrude from the other longitudinal side edge of the upper sorting shelf, while the lower part of the sorting shelf 11... A grain trough 15 is provided having an extending screw conveyor 14. Furthermore, each sorting shelf 11... or any sorting shelf 11 is provided with a sieve, which is inclined in the opposite direction to the inclination of the sorting shelf 11 and extends upwardly at a location opposite to the other longitudinal side edge of the sorting shelf 11. Lines 18 are provided at appropriate intervals (for example, 10 to 30 m/m) along the other longitudinal side edge.

Note that the grain receiving trough 15 is provided with a partition plate 19 approximately midway in its longitudinal direction, and the front side thereof is the first grain receiving trough 15', and the rear side is the second grain receiving trough 15''. The screw conveyor 14
The first screw 1 conveys the first grain in the first grain receiving trough 15' to the grain outlet 16 at the front end.
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 being removed, the second grain is returned from the second return thrower 17 into the handling chamber 2.

In this configuration, grains such as grains and culm cuts that are threshed by the handling drum 3 from the grain culm being transported in the feed chain 7 are transferred to the topmost sorting shelf 11 via the hopper 12 and the guide plate 13. The other longitudinal edge of each sorting shelf 11... While falling one after another in a step-like manner, the suction air to the cross-flow fan 8 passes through the intervals between the respective sorting shelves 11... and is sucked into the cross-flow fan 8. While it crosses the threshing grains on its way down to the lower sorting shelf, it also flows in the opposite direction to the threshing grains sliding down the slopes of each sorting rack, so that light waste such as culm cuts during threshing flows in the opposite direction to the threshing grains that slide down on each sorting shelf along the slope. The dust is separated by being sucked into the cross-flow fan 8 on the suction wind, and this separation action is performed for each of the plurality of sorting shelves. The grains falling from the upper sorting shelf to the lower sorting shelf, or the grains sliding down on the sorting shelf, come into contact with a large number of sieve lines 18 extending toward the top of the sorting shelf. Due to the contact with the line 18, the falling speed of the threshing grains is reduced, and the dust that is being threshed is thrown away from the grains, so that even large dust particles can easily be carried by the suction wind toward the cross-flow fan 8. Therefore, the separation and removal of dust from the grains is improved to an extent that is incomparable to the case where there is no sieve wire 18.

In summary, the present invention consists of arranging a plurality of sorting shelves in a multi-layered manner with appropriate spacing between each sorting shelf in the lower part of a handling chamber containing a built-in handling cylinder, and the uppermost sorting shelf While the upper part is configured to guide the threshing from the handling chamber, one longitudinal side edge of each sorting shelf faces toward the suction side of a cross-flow fan provided with the axis substantially parallel to this one side edge. , and each sorting shelf is tilted so that the other longitudinal side edge thereof is lower than the one longitudinal side edge, and the other longitudinal side edge of each sorting shelf is set so that the other longitudinal side edge of the lower sorting shelf is lower than the one longitudinal side edge of the upper sorting shelf. The shelves are configured in a step-like manner so as to protrude from the other longitudinal side edge of each sorting shelf, and at least one of the sorting shelves has a sieve line extending toward the upper surface of the sorting shelf at the other longitudinal side edge of the sorting shelf. They are arranged at appropriate intervals along the other longitudinal edge and can be sorted without the need for a conventional swinging sorting mechanism or a winnowing fan, so the structure is extremely simple and compared to conventional ones. It is possible to reduce the weight to an incredible degree, reduce vibration and noise, and because the dust is sucked into the cross-flow fan between each sorting shelf and discharged outside the machine, there is no clogging of the dust discharge. be.

Furthermore, the present invention allows large particles of dust during threshing to be easily carried by the suction wind to the cross-flow fan by using the sieve line provided on at least one of the sorting shelves. This has the effect of significantly improving the sorting performance.

[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. is the third
It is a - view plan view of a figure. 1... Machine frame, 2... Handling room, 3... Handling trunk, 7...
Feed chain, 11...Sorting shelf, 8...Cross flow fan, 15...Grain catcher, 14...Screw conveyor, 18...Sieve line.

Claims (1)

[Scope of utility model registration request] A plurality of sorting shelves are arranged in a multi-layered manner with appropriate spacing between each sorting shelf in the lower part of the handling chamber containing the handling cylinder, and the topmost sorting shelf is used to store the information from the handling room. While configured to guide grain threshing, one longitudinal side edge of each sorting shelf is directed toward the suction side of a cross-flow fan provided with an axis substantially parallel to the one side edge,
In addition, each sorting shelf is tilted so that the other longitudinal side edge thereof is lower than the one longitudinal side edge, and the other longitudinal side edge of each sorting shelf is set so that the other longitudinal side edge of the lower sorting shelf is lower than the one longitudinal side edge of the upper sorting shelf. At least one of the sorting shelves has a step-like structure so as to protrude from the other longitudinal side edge of each sorting shelf, and a sieve line extending toward the top surface of the sorting shelf is provided at the other longitudinal side edge of at least one of the sorting shelves. A sorting device for a thresher that is provided at appropriate intervals along the other side edge.