JP2004350648A - Guiding part of selecting wind in thresher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guiding part of selecting wind in a thresher for guiding the selecting wind smoothly to a chaff sieve in a swinging selecting body. <P>SOLUTION: This guiding part 23 for guiding the selecting wind to the chaff sieve 18 side in the swinging selecting body 9 is installed at the outside of a wind blowing port 22 by being equipped with a guiding surface 27 forming a steep inclination of its blown wind guide-starting part side relatively to horizontal direction and becoming gradually moderate inclination towards the final end side of the blown wind guidance in at the outside upper direction of the blowing port 22. The guiding surface 27 is separated into a fixed guiding surface 27a in the case side of a fanning mill fan 7 and a movable guiding surface 27b in the swinging selecting body 9 side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sorting wind guide portion in a threshing apparatus.
[0002]
[Prior art]
A Karamin fan that blows a sorting wind for sorting the processed material after threshing by a conventional handling cylinder, and a swing sorting body that is arranged behind the Karamin fan and sorts the processed material by a swing operation, An oscillating sorter has a chaff sheave for coarse sorting and a Glen sheave located below the chaff sheave, and a blower outlet for discharging the sorter wind is provided on the rear side of the Karamin fan, so that the sorter is blown from the blower outlet. 2. Description of the Related Art A threshing device that separates and blows wind into chaff sheaves and Glen sheaves is known (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-07-289069
[Problems to be solved by the invention]
However, since the threshing device forms a straight air blowing path in a side view, when the sorted wind is guided to the chaff sheave located particularly above, the wind direction hits the casing, and the wind direction changes to generate a vortex. Is not stable, and as a result, there is a problem that the sorting efficiency is reduced.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a sorting wind guide in the threshing apparatus of the present invention is provided with a Karamin fan 7 for blowing a sorting wind for sorting the processed material after threshing by the handling cylinder 1 and a rearward of the Karamin fan 7. A rocking sorter 9 for sorting the workpiece by a rocking operation, wherein the rocking sorter 9 includes a rough-selecting chaff sheave 18 and a grain sheave 19 located below the chaff sheave 18. In a threshing device that has a blower port 22 for discharging the screening wind on the rear side of the Karino fan 7 and separates and blows the screening wind blown from the blowing port to the chaff sheave 18 and the Glen sheave 19, respectively, On the outside, a guide portion 23 for guiding the sorting wind to the chaff sheave 18 side is provided, and the guide portion 23 has a steep slope with respect to the horizontal at the blowing guide start side and faces toward the blowing guide end side. To become comprise guide surfaces 27 to be sequentially gentle slope on the outside above the air blowing port 22 is set to the first feature.
[0006]
Further, the guide portion 23 includes a movable portion 26b that swings integrally with the swing sorting body 9 and a fixed portion 26a that is fixedly provided on the case 21 side of the Karino fan 7, and the guide surface 27 is fixed to the fixed portion 26a. The fixed guide surface 27a is provided on the fixed guide surface 27a side, and is fixed in the middle of the gentle slope portion of the guide surface 27. The second feature is that the guide surface is divided into a guide surface 27a and a movable guide surface 27b.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 and 2 are schematic side views of a main part of a threshing apparatus to which the present invention is applied. The threshing apparatus includes a handling cylinder 1 for threshing grain culms in a threshing chamber for threshing a harvested culm and threshing. There is provided a handling net 4 for leaking a handled material (processed material) in which the crushed grains contain debris, cut straw and the like. Below the threshing chamber, there is provided a sorting chamber 2 for sorting threshed grains from the processed material after threshing by the handling drum 1. On the side of the threshing room, a feed chain 3 for transporting the cut culm along the drum 1 is provided.
[0008]
In the sorting room 2, a Karino fan 7 for generating a sorting wind and a dust discharging fan 8 for forcibly discharging dust such as straw waste are installed before and after. A swing sorting body 9 that swings and sorts the processed material leaked by the handling net 4 is mounted in the formed sorting air passage so as to swing in the front-rear direction. Further, a first accommodation section 11 for accommodating the first object selected by the swing sorting body 9 and a second accommodation section 12 for accommodating the second object are also provided.
[0009]
Further, in the sorting room 2, the first horizontal spiral 13 for horizontally transporting the first object to the end of the first storage unit 11 and the second horizontal spiral for horizontally transferring the second product to the end of the second storage unit 12 14, a blower fan 16 and the like for blowing a sub-sorting wind from below toward the swing sorting body 9 are also provided between the first containing portion 11 and the second containing portion 12.
[0010]
The oscillating sorter 9 is provided with an oscillating flow plate 17 for transferring the processed material leaked from the handling net 4 backward by oscillating, and disposed behind the oscillating flow plate 17. And a first chaff sieve 18 for filtering the processed material transferred by the first chaff sieve. A second chaff sheave 15 is provided below the first chaff sheave 18, and a mesh-shaped sheave 19 is stretched below the second chaff sheave 15.
[0011]
Further, a straw rack 20 extending rearward is provided behind the grain sheave 19, and the swing sorting body 9 includes the swing flow plate 17, the first chaff sheave 18, the second chaff sheave 15, and the grain sheave 19. , A straw rack 20 and the like are integrally framed.
[0012]
The rocking and sorting body 9 is removably supported in the sorting chamber 2 with its front and rear swingably supported, so that the threshing apparatus can thresh similarly to a conventional threshing apparatus such as a combine. , Sorting, grain transfer operation, etc.
[0013]
That is, the processed material leaked from the handling net 4 is transferred rearward by the oscillating flow plate 17, and the transferred processed material is filtered by the first chief sieve 18 and dropped on the second chief sieve 15, and Filtered by the chaff sheave 18 and dropped into the Glen Sheave 19, a part is sorted by the Glen Sheave 19 and dropped below the Glen Sheave 19, and stored as the first thing in the first housing portion 11, and the rest behind the Glen Sheave 19. , Is dropped and stored in the second storage section 12 as a second product via the straw rack 20, and is sorted in two stages by two chaff sheaves.
[0014]
At this time, dust such as straw waste generated in the airframe is guided by a sorting wind formed by the Karamin fan 7 and the dust discharging fan 8 from the sorting wind path to a continuous dust discharging path, and is sucked by the dust discharging fan 8. Then, the air is discharged from the dust outlet 16 to the outside of the machine. For example, the processed material filtered by the first chaff sieve 18 is a sorter in which a part of dust such as straw waste mixed with the processed material is blown below the first chaff sieve 18 before reaching the second chaff sieve 15. It is blown off toward the dust outlet 16 by the wind.
[0015]
In addition, a part of dust such as straw waste mixed into the processed material filtered by the second chaff sieve 15 and dust such as straw waste mixed into the first thing dropped from the Glen Sheave 19 are also used in the case of the first chief sieve 18. Similarly to the above, the sorting wind blown below the second chaff sheave 15 or the Glen sheave 19 is blown off toward the dust discharge port 16 side, thereby sorting the kernels.
[0016]
On the other hand, the above-mentioned Karamin fan 7 is housed in a fan case 21 provided on the threshing device side, is located below the oscillating flow plate 17, and is in front of both chaff sheaves 18, 15 and Glen sheave 19. positioned. In addition, an opening 22 is provided behind the fan case 21 so as to open a sorting wind. At this time, the air outlet 22 is located below both the chaff sheaves 18 and 15.
[0017]
Outside the air outlet 22, a guide portion 23 for guiding the separated air from the air outlet 22 to both the chaff sheaves 18 and 15 and the Glen sheave 19 is provided so as to be continuous with the fan case 21. At this time, the guide portion 23 includes a first chaff sheave air passage 23a for guiding the sorted wind below the first chaff sheave 18, a second chaff sheave air passage 23b for guiding the sorted wind below the second chaff sheave 15, and a Glensheave. A grain sieve air passage 23c for guiding the sorting wind is formed below the partition 19 by two partitions 24 and 25.
[0018]
The Karino fan 7 described above rotates counterclockwise as shown by the arrow in the left side view (FIG. 1), and the sorted wind is formed in a counterclockwise spiral shape and is exhausted from the air outlet 22. On the other hand, the inner surface 27 of the upper wall 26 of the guide portion 23 serves as a series of guide surfaces for the sorted wind in the first chaff sheave air passage 23a, and is a circle that comes into contact with the sorted wind discharged from the blower opening 22 when viewed from the left side. It has an arc shape, and the front end is connected to the end of the air outlet 22, and the rear end is close to the front end of the first chaff sheave 18.
[0019]
The inner surface 27 of the arc-shaped upper wall 26 is connected to the air outlet 22 at a position near the intersection with the horizontal line, and the position near the intersection with the vertical line is a rear end. The inner surface 27 of the upper wall 26, that is, the guide surface, has a steep slope with respect to the horizontal direction along the air blowing direction of the fan 7 at the front end side, which is the air blowing guide start side toward the first chaff sheave 18, and faces the air blowing guide terminal side. And gradually become gradually inclined.
[0020]
As a result, the sorted wind exhausted from the air outlet 22 smoothly flows along the flow at the time of the start of discharge from the air outlet by the steeply inclined portion of the inner surface 27 of the upper wall 26 having an arcuate shape so as to be in contact with the sorted air. Is guided into the guide portion 23, and is smoothly guided by the gentle slope portion of the inner surface 27 of the upper wall 26 to the lower side of the first chief sheave 18 provided above the air outlet 22.
[0021]
As described above, the sorted wind smoothly flows from the blow-off port 22 to the first chaff sheave 18 side, and there is no inconvenience such as the generation of vortices on the way and unstable wind flow. Can be sorted, and the sorting efficiency is improved.
[0022]
In addition, at the lower end side of the blowing port 22, since the force in the direction of winding the sorting wind into the inside is weak, a part of the selecting wind is smoothly discharged from the blowing port 22, and a Glen sheave formed on the lower end side of the blowing port 22 is formed. The selection wind is smoothly supplied to the air passage 23c without providing the arc-shaped guide surface 27.
[0023]
In addition, the intermediate position of the air outlet 22 is a position where the sorted wind tries to escape to the air outlet 22 side, so that a part of the sorted air is smoothly discharged from the air outlet 22, and the first chaff sheave air passage 23a and the Glen sheave air are blown. The separated air is smoothly supplied to the second chaff sheave air passage 23b formed between the air passage 23c and the air passage 22 and located substantially in the middle of the air outlet 22 without providing the arc-shaped guide surface 27.
[0024]
The second chaff sheave air passage 23b is supplied with a sifting wind that tries to escape to the air blast opening 22 side. Therefore, a sifting air that is stronger than the sifting wind that is supplied to the Glen sheave blast passage 23c. Then, since the sifting wind that is going to return to the fan side in a spiral shape is smoothly introduced into the first chaff sheave blast passage 23a, the sifting wind stronger than the sifting wind supplied to the second chaff sheave blast passage 23b. Supplied.
[0025]
That is, the sorting wind becomes stronger in the order of the Glen Sheave air passage 23c, the second chaff sheave air passage 23b, and the first chaff sheave air passage 23a.
[0026]
On the other hand, as shown in FIG. 2, the upper wall 26 of the above-described guide portion 23 is fixed to a fixed wall 26 a having a tip integrally fixed to the blower opening 22 of the fan case 21, and a swing sorting body 9 is fixed to the rear end. A movable wall 26b, which is fixed and swings integrally with the swing sorting body 9, is divided into two parts, and the guide surface 27 is constituted by an inner surface 27a of the fixed wall 26a and an inner surface 27b of the movable wall 26b. You can also.
[0027]
The guide surface 27 is divided into two portions (an inner surface 27a of the fixed wall 26a and an inner surface 27b of the movable wall 26b) at a gentle slope, and although the two surfaces are discontinuous, they are formed into one circular arc as described above. A series of guide surfaces 27 follow along, but the discontinuous portion is a gently inclined portion, so that the sorting wind guided to the first chief sheave 18 side by the inner surface 27a of the fixed wall 26a is applied to the inner surface 27b of the movable wall 26b. Inherited smoothly.
[0028]
At this time, since the rear end position of the inner surface 27b of the movable wall 26b and the position of the first chaff sheave 18 are always constant even if the swing sorter 9 swings, the swing sorter 9 swings. Even so, the sorting wind is reliably sent to a predetermined position below the first chaff sheave 18 by the inner surface 27b of the movable wall 26b, and the fluctuation of the blowing position of the sorting wind accompanying the swing of the swing sorting body 9 is prevented, Variation in sorting is prevented.
[0029]
2, the same reference numerals as those in FIG. 1 denote the same parts, and a description of the same functions will be omitted.
[0030]
Also, in both FIGS. 1 and 2, as described above, the two-stage sorting type threshing apparatus has been described as an example, but the guide portion 23 in which the guide surface 27 is provided in the one-stage sorting type threshing apparatus provided with one chaff sheave. May be provided. In this case, a strong sorting wind can be smoothly blown to the only chaff sheave side located above the blowing port 22.
[0031]
【The invention's effect】
According to the structure of the present invention configured as described above, the sorted wind discharged from the air outlet and blown is guided by the guide surface along the flow at the time of starting discharge from the air outlet, and is guided by the guide surface. Since it is guided smoothly to the chaff sheave side, the sorting wind from the blow port to the chaff sheave side flows smoothly, preventing inconveniences such as the generation of vortices on the way and instability of the air flow, and the efficient processing of the processed material on the chaff sheave side. There is an effect that can be selected.
[0032]
In addition, the swing sorter is configured to sort the processed material while swinging. For this reason, the guide unit is provided fixedly on the movable part that swings integrally with the swing sorter and on the case side of the Karamin fan. As described above, the sorting wind guided smoothly to the terminal side by the fixed guide surface of the fixed portion, as described above, is integrated with the swing sorting body in which the movable guide surface of the movable portion swings. The guide surface is swung, and smoothly inherited at the gentle slope portion of the guide surface, so that there is an advantage that the guide can be reliably guided to the chaff sheave side.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a main part of a threshing apparatus.
FIG. 2 is a schematic side view of a main part of a threshing apparatus in which a guide section has a divided structure.
[Explanation of symbols]
1 Handling cylinder 7 Karamin fan 9 Swing sorting body 18 1st chaff sieve (chaff sieve)
19 Glen Sheave 22 Air outlet 23 Guide part 27 Guide surface 26b Movable wall (movable part)
21 fan case (case)
26a Fixed wall (fixed part)
27a Fixed guide surface 27b Movable guide surface

Claims (2)

A Karamin fan (7) that blows a sorting wind for sorting the processed material after threshing by the handling drum (1), and is disposed behind the Karamin fan (7), and sorts the processed material by a swinging operation. A rocking sorter (9), wherein the rocking sorter (9) has a chaff sheave (18) for rough sorting and a grain sieve (19) located below the chaff sheave (18); In a threshing device in which a blower outlet (22) for discharging the screening wind is provided on the rear side of the fan (7), and the screening wind blown from the blowing outlet is blown separately to the chaff sheave (18) and the Glen sheave (19), A guide portion (23) for guiding the sorting wind is provided on the chaff sheave (18) side outside the blower opening (22), and the guide portion (23) has a steep inclination with respect to the horizontal when the blow guide start side is horizontal. Toward the guide end Guiding part of the sorting wind in threshing device including the outside above the following gentle slope to become guide surface (27) of the air blowing port (22). A movable part (26b) that swings integrally with the swinging sorter (9), and a fixed part (26a) that is fixedly provided on the case (21) side of the Karino fan (7). The guide surface (27) is composed of a fixed guide surface (27a) on the fixed portion (26a) side and a movable guide surface (27b) on the movable portion (26b) side. 2. A threshing machine according to claim 1, wherein the inclined portion is provided on the fixed guide surface (27a) side and is divided into a fixed guide surface (27a) and a movable guide surface (27b) in the middle of the gentle inclined portion of the guide surface (27). Sorting style guide in the device.

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