JP2005143373A - Separation apparatus for thresher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a separation apparatus for a thresher, with which the vertical width of the whole separation apparatus is prevented from becoming large even though a chaff sieve has two steps and the separation apparatus has improved separation ability. <P>SOLUTION: This separation apparatus for the thresher is equipped with a fist chaff sieve (17) composed of a plurality of fins for separating a treated material dropped from the receiving net (3) of a threshing chamber (1), a second chaff sieve (18) that is positioned below the first chaff sieve and composed of a plurality of fins for separating the treated material separated by the first chaff sieve (17) and a grain sieve (19) that is positioned below the second chaff sieve (18) and separates the treated material separated by the second chaff sieve (18) and has constitution that an interval (H1) between the first chaff sieve (17) and the grain sieve (19) becomes wider on the upstream side in the transport direction of the treated material and narrower on the downstream side and an interval (H2) between the second chaff sieve (18) and the grain sieve (19) becomes approximately equal on the upstream and the downstream sides in the transport direction of the treated material. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a screening apparatus for a threshing machine that can be used for a combine, a harvester, or the like.

In general, a thresher swinging sorter equipped with a chaff sheave composed of a plurality of fins for coarsely sorting the processed material that has fallen from the receiving net of the handling room and a grain sheave for finely sorting the processed material that has fallen from the chaff sheave below it. An apparatus is known, but since this has only one stage of chaff sheave, there is a problem that the amount of processed material to be sorted becomes large and the sorting ability is insufficient and the sorting accuracy is deteriorated when it becomes a large combine.
Therefore, a technique for improving the sorting capability by using two stages of chaff sheaves is already known (see, for example, Patent Document 1).
Japanese Examined Patent Publication No. 6-26493

However, although the above-described one improves the sorting ability, there is a drawback that the vertical width of the entire swing sorter becomes large.
An object of the present invention is to improve the above-mentioned conventional drawbacks.

In order to solve the above-mentioned problem, in the present invention, the first chaff sheave constituted by a plurality of fins for sorting the processed material dropped from the receiving net of the handling chamber, and the first chaff sheave positioned below the first chaff sheave are sorted. A second chaff sheave composed of a plurality of fins for sorting the processed material and a grain sheave for sorting the processed material sorted by the second chaff sheave positioned below the fin, and the interval between the first chaff sheave and the Glen sheave The first side is configured such that the upper side in the material transfer direction is wide and the lower side is narrow, and the distance between the second chaff sheave and the grain sheave is substantially the same on the upper side and the lower side in the workpiece transfer direction. Features.
In addition, the first sheave and the second chaff sheave are provided under the Glen sheave, a strola back for sorting the second helix, the second helix behind the first helix, and the second helix above the second helix. The second feature is that each rear end is arranged so as to face the upper end of the Strollac, and the second thing falling from the rear end of the first chaff sheave and the second chaff sheave is selected by the Strollac. To do.

  The distance between the first chaff sheave and the grain sheave is such that the upper side in the process transfer direction is wide and the lower side is narrow, and the distance between the second chaff sheave and the grain sheave is substantially the same on the upper side and the lower side in the process transfer direction. Since it is configured so that the amount of the processed material on the rocking sorter is large, the separation between the first chaff sheave and the Glen sheave is widened on the upper side in the direction of moving the processed material, so that the processed material falling from the chaff sheave is sufficiently wind-selected. While securing the space, the height of the entire sorting device can be suppressed by lowering the height of the first chaff sheave end, and the distance between the second chaff sheave and the end of the grain sheave is, for example, the distance between the second chaff sheave and the grain sheave. Since the lower side can be made wider than the lower side, the blowout of the sorting wind that flows backward along the flow plate Ku selection is good.

  FIG. 1 is a side view of a threshing machine to which the present invention is applied. The threshing machine is supported in a handling chamber 1 so as to be rotatable, and a handling cylinder 2 for threshing a harvested cereal and a threshing grain. There is provided a receiving network 3 for leaking a handled item (processed item) containing scraps, chips and the like. Below the handling chamber 1, a sorting device 4 for sorting the grains from the processed product after threshing by the handling cylinder 2 is provided. A feed chain 5 is provided at the side of the handling chamber 1 to convey the harvested cereal along the barrel 2, and behind that is a waste conveying chain 6 that conveys the threshed cereal to the rear. Is provided.

  In the sorting device 4, a red pepper fan 7 that raises the sorting wind and a dust exhaust fan 8 that forcibly discharges dust such as sawdust are installed at the front and rear. A swing sorting body 9 for swinging and sorting the processed material leaked by the receiving net 3 is mounted in the formed sorting air passage so as to be swingable in the front-rear direction. In addition, a first accommodating portion 10 that accommodates the first item sorted by the swinging sorter 9 and a second accommodating portion 11 that accommodates the second item arranged behind it are provided.

  Further, in the sorting device 4, the first flow plate 12 that guides the first item to the first accommodating unit 10, the first spiral 13 that conveys the first item to the end of the first accommodating unit 10, and the second item The second flow plate 14 that guides the second container to the second container 11, the second spiral 15 that horizontally conveys the second object to the end of the second container 11, and the first container 10 and the second container 11 A blower fan 41 and the like that blow sub-selection air from below toward the swinging sorter 9 side are provided.

  The oscillating sorter 9 is disposed at the rear of the oscillating flow plate 16 and the oscillating flow plate 16 for transferring the processed material leaked from the receiving net 3 to the rear by the oscillation. The first chaff sheave 17 is provided for leaking the processed material transferred by the above. In addition, a second chaff sheave 18 is provided below the first chaff sheave 17, and a net-like grain sheave 19 is stretched below the second chaff sheave 18.

  Further, a Strollac 20 extending rearward is provided at the upper end of the first flow plate 12 behind the Glen Sheave 19, and the Strollac 21 is provided at the rear ends of the first and second Chaff sheaves 17 and 18. , 22, and the oscillating sorter 9 includes the oscillating flow plate 16, the first chaff sheave 17, the second chaff sheave 18, the grain sheave 19, and the strolacs 20, 21, 22, etc. that form a framework. Has been.

  In the swing sorter 9, the distance H1 between the first chaff sheave 17 and the Glen sheave 19 is set so that the upper side (front side) in the processed material transfer direction is wide and the lower side (rear side) is narrow in side view. The distance H2 between the second chaff sheave 18 and the grain sheave 19 is set so that the upper side (front side) and the lower side (rear side) in the processed material transfer direction are substantially the same. Then, the rear end of the first chaff sheave 17 is extended to substantially the same position as the upper end portion of the first flow plate 12 in the direction of workpiece transfer, and the rear end of the second chaff sheave 18 is slightly behind the upper end portion of the first flow plate 12. The chaff sheaves 17 and 18 are set so that the rear ends of the chaff sheaves 17 and 18 face above the start end portion of the stroll rack 20.

FIG. 2 is a side view showing a chaff sheave drive mechanism, and FIG. 3 is a front sectional view thereof.
The inclination angle of the fins of the first chaff sheave 17 and the second chaff sheave 18 is automatically changed and adjusted according to the amount of processed material accumulated on the swing sorter 9, and when the amount of processed material is large, the inclination angle of the fin is large. When the amount of processed material is small, the inclination angle of the fin is small (the sorting processing capability is small).

  That is, the first chaff sheave 17 and the second chaff sheave 18 are each composed of a fixed fin 23 and a plurality of movable fin groups 24, and the movable fin group 24 includes a driving fin 25 and a plurality of driven fins 26 at the lower ends thereof by a connecting rod 27. When the drive fin 25 swings about the rotation fulcrum shaft 28 fixedly connected to the upper end, the plurality of driven fins 26 are interlocked with each other via the connection rod 27 and similarly the upper rotation fulcrum. It swings around the shaft 28. A proximal end portion of an operating member 30 having a roller 29 rotatably provided at the tip is fixed to the rotation fulcrum shaft 28 of each drive fin 25, and the roller 29 is moved toward the cam plate 31 by a spring 32. It is biased and is configured to contact the outer periphery of the cam plate 31. An electric motor 33 slides the cam plate 31 back and forth by forward / reverse driving. When the electric motor 33 is driven and controlled according to the amount of the processed material on the swing sorter 9, and the cam plate 31 slides back and forth, the cam plate 31 moves. Each of the actuating members 30 is swung by the concavo-convex portion on the outer periphery of 31 so that the inclination angle of the movable fin group 24 is changed.

  FIG. 4 is a graph showing the relationship between the fin opening (fin inclination angle) of the first chaff sheave 17 and the second chaff sheave 18 and the amount of processed material on the rocking sorter. The second chaff sheave 18 is opened from the first chaff sheave 17. The degree is set to be small (the inclination angle is small). Specifically, the second chaff sheave opening is set to about 70% of the first chaff sheave opening, and the fin opening of the second chaff sheave 18 is always 70% of the fin opening of the first chaff sheave 17. The opening is changed and adjusted. Thereby, the layer thickness of the processed material on both the chaff sheaves 17 and 18 becomes substantially the same, and stable sorting can always be performed.

  On the other hand, the above-mentioned Kara fan 7 is housed in a fan case 34 provided on the threshing machine side, located below the oscillating flow plate 16 and on the front side of the chaff sheaves 17, 18 and the grain sheave 19. positioned. An air outlet 35 for sorting air is provided behind the fan case 34. At this time, the air blowing port 35 is located below the both chaff sheaves 17 and 18.

  A guide portion that guides the selection air from the blower port 35 toward the chaff sheaves 17 and 18 and the glenshive 19 is provided outside the blower port 35 so as to continue to the fan case 34. At this time, in the guide portion, a first chaff sheave air passage that guides the sorting air below the first chaff sheave 17, a second chaff sheave air passage that guides the sorting air below the second chaff sheave 18, and a lower portion of the grain sheave 19. A Glen sheave air passage that guides the sorting air is formed by two partitions 36 and 37.

  In addition, the above-mentioned Kara fan 7 rotates counterclockwise in the left side view (FIG. 1), and the sorting air is exhausted from the air outlet 35. On the other hand, the upper wall of the guide part is fixed to the fixed wall 38 whose front end is integrally fixed to the air outlet of the fan case 34, and the rear end is fixed to the swing sorting body 9. The guide surface of the sorting air in the first chaff sheave air passage is formed by a series of arc-shaped guide surfaces by the inner surface of the fixed wall 38 and the inner surface of the movable wall 39.

  At this time, the rear end position of the inner surface of the movable wall 39 and the position of the first chaff sheave 17 are always constant even if the swinging sorter 9 swings. However, the sorting air is reliably blown to the lower side of the first chaff sheave 17 by the inner surface of the movable wall 39, and the variation of the spraying position of the sorting air accompanying the swinging of the swinging sorter 9 is prevented, thereby preventing variation in sorting. Is done.

  As described above, the processed material leaked by the receiving net 3 is transferred backward by the oscillating flow plate 16, and the transferred processed material is selectively leaked by the first chaff sheave 17 and dropped onto the second chaff sheave 18. In addition, the second chaff sheave 18 is sorted and leaked and dropped onto the Glen sheave 19, and the processed product that has been sorted and leaked by the Glen sheave 19 is dropped below the Glen sheave 19 and placed in the first container 10 as the first thing. Be contained.

  In addition, the processed material that has not been leaked by the first chaff sheave 17 and the second chaff sheave 18 and has been transferred to the rear is sorted by the rear strollers 21 and 22, and the processed material that has been unraveled by the strollers 21 and 22 is leaked. The processed material dropped and sorted on the lower Strollac 20 and not leaked by the Glen sieve 19 is transferred to the rear, sorted by the Strollack 20, and the second leaked from the Strollack 20 is the second container. 11 is accommodated in a fall. Therefore, since the processed material that has not been processed by the first chaff sheave 17 and the second chaff sheave 18 is sorted by the strola rack 20 and then accommodated in the second accommodating portion 11, the sorting is good.

  Further, dust such as soot generated in the machine body is guided along the dust exhaust path that is continuous from the sorting air path by the sorting air formed by the tang fan 7 and the dust exhaust fan 8, and is sucked by the dust exhaust fan 8. And discharged from the dust outlet 40 to the outside of the machine. For example, the processed material leaked by the first chaff sheave 17 is blown below the first chaff sheave 17 until a part of the dust such as sawdust mixed in the processed material reaches the second chaff sheave 18. It is blown off to the dust outlet 40 side by the sorting wind.

  Further, a part of the dust and the like mixed in the processed material leaked by the second chaff sheave 18 and the dust and the like mixed in the first thing dropped from the grain sieve 19 are also included in the first chaff sheave 17. As in the case, the sorting air blown below the second chaff sheave 18 or the Glen sheave 19 is blown off to the dust outlet 40 side, and the grain selection is performed as described above.

At this time, the interval H1 between the first chaff sheave 17 and the grain sheave 19 is configured such that the upper side in the process transfer direction is wide and the lower side is narrow, and the interval H2 between the second chaff sheave 18 and the grain sheave 19 is set in the process transfer direction. Since the upper side and the lower side are configured to be substantially the same, the distance H1 between the first chaff sheave 17 and the grain sheave 19 is widened on the upper side in the process transfer direction where the amount of the process on the rocking sorter 9 is large. The height of the entire sorting device can be suppressed by lowering the height of the end of the first chaff sheave 17 while securing a sorting space for sufficiently wind-selecting the processed material falling from the first and second chaff sheaves 17 and 18, and the second chaff sheave 18. Between the second chaff sheave 18 and the Glen sheave 19 is narrower on the lower side than on the upper side. Since widely compared to what became, well sorted good blow sorting air flowing rearward along the top flux plate 12.
In addition, since the second thing falling from the rear ends of the first chaff sheave 17 and the second chaff sheave 18 is sorted by the strola back 20, the sorting is improved.

It is a side view of a threshing machine. It is a side view which shows a chaff sheave drive mechanism. It is a front sectional view same as the above. It is a graph which shows the relationship between a fin opening degree and the amount of processed materials.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Handling chamber 3 Receiving net 9 Oscillating sorter 17 1st chaff sheave 18 2nd chaff sheave 19 Glen sheave 20 Strollac

Claims (2)

  The first chaff sheave (17) composed of a plurality of fins for selecting the processed material dropped from the receiving net (3) of the handling chamber (1), and the first chaff sheave (17) positioned below the first chaff sheave (17). A second chaff sheave (18) composed of a plurality of fins for sorting the processed material, and a Glen sheave (19) for sorting the processed material sorted by the second chaff sheave (18) located below the second chaff sheave (18). The distance (H1) between the 1 chaff sheave (17) and the Glen sheave (19) is configured such that the upper side in the processed product transfer direction is wide and the lower side is narrow, and the distance between the second chaff sheave (18) and the Glen sheave (19) ( The threshing machine sorting device is characterized in that H2) is configured such that the upper side and the lower side in the processed product transfer direction are substantially the same. Strollac which sorts the first spiral (13) below the Glen sieve (19), the second spiral (15) behind the first spiral (13), and the second thing above the second spiral (15) (20) and the first chaff sheave (17) and the second chaff sheave (18) are arranged so that the rear ends of the first chaff sheave (17) and the start end of the stroll rack (20) face each other, and the first chaff sheave (17) and 2. The threshing machine sorting apparatus according to claim 1, wherein the second thing falling from the rear end of the second chaff sheave (18) is sorted by a stroller (20).

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