JPS61202626A - Sorting apparatus of threshed material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sorting device for threshing, and can be used as a sorting device for a combine harvester, a threshing machine, a threshing processing plant, etc.

2. Description of the Related Art A technique is known in which grains are sorted through grain leakage holes in a sorting plate by rotating a helix.

Problems to be solved by this type of technology: Since the degrain is transferred by the rotation of the helix, if straw waste is mixed in, this straw waste tends to wrap around the rotating helix and the sorting plate The leakage of grain from the grain is reduced.

Means for Solving the Problems This invention provides a helical plate (3) for leak-sorting grains while transporting the threshed grains by rotation along the upper surface of a sorting plate (2) having grain leakage holes (1). ), and the starting end of this sorting plate (2) and a threshing transfer shelf (4) that is visible above this starting end.
A threshing and sorting device is provided with an air outlet (6) of a pressure winnow (5) that blows air onto the sorting plate (2).

Effect of the Invention The threshing grains transferred from the transfer shelf (4) and flowing down to the upper part of the starting end of the sorting plate (2) are transferred from the air pressure winch (5) to the blowhole (6).
The relatively light straw waste is sorted by the jet of air that blows out towards the top of the sorting plate (2), and is blown away by the helix (3) of the sorting plate (2) in the direction of transport, making it heavier. The grains are dropped onto the starting end of the sorting plate (2), and the grains, straw waste, etc. that fall onto the top surface of the sorting plate (2) are collected using a spiral (3).
The grains are sorted by leaking downward from the leakage hole (1) while being transferred toward the terminal end by the rotation of the plate, and the straw waste is transferred to the terminal end side through the upper surface of the sorting plate (2).

Effects of the Invention The threshing carried out by the rotation of the helix (3) on the upper surface of the sorting plate (2) mainly transfers grains with less straw waste to the starting end side of the sorting plate (2).

In order to transfer the straw waste to the terminal side, it is pre-sorted by the sorting air from the pressure winnow (5), so the transfer and stagnation of straw waste at the start side is reduced and grain leakage is reduced. Leak screening from the hole (1) can be maintained well.

Embodiment In the illustrated example, a threshing device (9) is mounted on a chassis (8) on a crawler (7), and a reaping device is attached to the front lower part! The transfer device (1) receives the culm harvested in (10) and
1), the combine harvester is configured to thresh while clamping and transferring the grain.

The threshing device (9) has a threshing chamber (13) with a handling barrel (12) supported on its upper part, and a threshing chamber (13) that receives the threshing grain leaking from the threshing net (14) below the threshing chamber (13). A sorting device is installed at the rear of the threshing room (13), and a suction dust extractor (15) etc. is installed to suck up straw waste discharged from the rear of the threshing room (13) and dust discharged onto the sorting device and discharge it to the outside of the machine. has been established.

In the sorting device for sorting the threshed grains, the transfer shelf (4) is provided at the lower front part of the threshing room (13), and is made of a plate whose left and right sides are slightly bent upward. ) is provided rotatably around the horizontal axis (18) below the entrance of the inlet, and its rear end side is inclined downward, and this rear end portion forms a step portion (17), and a blowhole (6) is installed in this step portion. It consists of Rear suction dust extractor (15) from the lower rear end of this transfer shelf (4)
A sorting plate (2) is provided which is tilted forward and downward toward the front, and a helix (3) is provided along the top surface to be supported to rotate around an axis (!8) in the front and back direction.The rotation of this helix (3) is The structure is such that the threshed grains are transferred rearward along the upper surface of the sorting plate (2). This sorting plate (2) is provided with leakage holes (1) through which grains can leak, and the upper surface may be flat, but it is arranged along spirals (3) arranged at regular intervals in the lateral direction. It may also be formed into a gutter shape.

The air pressure winch (5) is installed below the transfer shelf (4) and communicates with the air outlet (6) to guide the air, and the air outlet (6) is connected to the sorting plate (
2) It is formed so that the wind blows backward along the upper surface, and
An eccentric roll (13) is provided at the front end of the helical shaft (18) to support the lower surface of the transfer shelf (4).
) is rotated to swing the transfer rack (4) to facilitate the transfer of threshed grains.Furthermore, the lower side of this sorting plate (2) is used to screen grains etc. leaking from this sorting plate (2). Sorting air path (20
), the front end of which communicates with the air pressure trough (21), the rear end of which communicates with the straw outlet (22), and the first receiving gutter (23) and the second gutter are provided below the sorting air channel (20). Arrange the catch gutter (24) etc.
The second receiving trough (24) is connected in order to return the second grain to the threshing room (13) via the second grain lifting machine (25).

(28) is a culm cutter that receives and cuts the threshed culm.

Some of the threshed grains threshed in the threshing room (13), which contain a large amount of grains, leak through the threshing net (14) and are transferred to the lower transfer shelf (
4) The threshed grains received above and leaked and discharged from the rear of the threshing net (14) and the rear end of the threshing room (13) contain a lot of straw waste, etc., and are collected on the sorting plate (2). It will be done. The threshed grains flowing down from the transfer terminal end of these transfer racks (4) to the starting end of the sorting plate (2) are sorted by wind blowing backward from the blowhole (6), and the grains are near this starting end. However, the straw waste is blown backwards and is sucked into the rear suction dust extractor (15) along with the straw waste that leaks directly onto this sorting plate (2) from the threshing room (13). Although they are excluded,
Relatively heavy straw waste etc. are dropped onto the sorting plate (2) on the way. Therefore, when threshing grains are transferred by rotating the helix (3) on the upper surface of the sorting plate (2), there are mainly more grains in the front part and less straw waste, and this causes leakage of grains during transport at the starting end. Sorting is carried out efficiently and does not impede grain leakage sorting due to wrapping of straw waste, stagnation, etc.

In addition, some of the straw waste transferred to the rear on this sorting plate (2) is rotated by the spiral (3), and if there are unshelved seed parts, a shedding action is performed, and while they are being transferred, they are sorted. The grains leaking through the plate (2) and the straw waste that remains and is transported by the rear Herasen (3) and the suction dust extractor (1)
5), the grains, etc. that leak downward are sorted by the lower sorting air passage (20), and the first grains, which are sized, are the most receptive. The second material containing straw waste etc. is received by the gutter (23) and taken out, and the second material containing straw waste is received by the second receiving gutter (24) and returned to the threshing room (13) for reprocessing, and the waste material is It is discharged from the straw opening (22).

Further, the straw waste transferred on the upper surface of the sorting plate (2) by the helix (3) is discharged from the straw discharge port (22) at the rear end.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a partial side sectional view, FIG. 2 is a front sectional view thereof, and FIG. 3 is a side sectional view. In the figure, reference numeral (1) indicates a leakage hole, (2) indicates a sorting shelf, (3) indicates a spiral, (4) indicates a transfer shelf, (5) indicates a pressurized windshield, and (6) indicates a blowhole.

Claims (1)

[Claims] Along the upper surface of the sorting plate (2) having the grain leakage hole (1),
A helix (3) is provided to sort the grains while transferring the threshed grains by rotation, and between the starting end of this sorting plate (2) and the threshing transfer shelf (4) that is visible above this starting end. for,
This threshing sorting device is equipped with a blowhole (6) of a pressure winnow (5) that blows air onto the sorting plate (2).