JP5005185B2 - Threshing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thresher which reduces dusts to be carried around to enhance the suction efficiency of a dust-discharging fan. <P>SOLUTION: This thresher 1 having a shaking grader 14 for shaking and grading grains, a fan case 24 disposed above the rear end of the shaking grader 14, and a cross flow type dust-discharging fan 25 horizontally disposed in the fan case 24, and discharging dust-discharging air sucked from the front suction portion 26 of the fan case 24 from the rear discharging port 27 of the fan case 24 is characterized by disposing a spreading start position A forward from a vertical line D passing through the central point B of the dust-discharging fan 25 and above a horizontal line D passing through the central point B of the dust-discharging fan 25, when a distance between the upper side of the dust-discharging fan 25 and the ceiling surface of the fan case 24 is backward spread. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to a threshing device provided in a combine or the like.

A threshing device is known in which a fan case is configured above the rear end of the rocking sorter that rocks and sorts the grains, and a cross-flow type dust exhaust fan is provided horizontally in the fan case. For example, see Patent Documents 1 and 2). In this type of threshing apparatus, dust in the sorting chamber is sucked from the suction port at the front part of the fan case and discharged toward the outside of the machine from the discharge port at the rear part of the fan case.
Japanese Patent Laid-Open No. 6-62647 JP-A-11-220939

  By the way, in the threshing apparatus described in patent document 1, 2, the space | interval of a dust exhaust fan upper part and a fan case ceiling surface is gradually made wide as the rear side. This is to promote the separation of dust while increasing the suction efficiency of the dust exhaust fan. However, in the conventional threshing device, the interval start position of the interval is set behind the vertical line passing through the center point of the dust exhaust fan, so that not only the interval between the rear portion of the dust exhaust fan and the rear surface of the fan case is insufficient. There is a possibility that the timing at which the dust is separated from the dust exhaust fan will be delayed, and the carrying around of the dust will increase.

The present invention was created for the purpose of solving these problems in view of the above situation, and includes a handling room for threshing grain from the stem and a rocking screen for rocking and sorting the grain. A sorting chamber provided with a body, a processing chamber for processing unprocessed material sent from the handling chamber, and a transverse flow type dust exhaust fan are provided, and the dust wind from the sorting chamber is at the front. In a threshing apparatus comprising a fan case that is sucked from the suction port of the formation and is discharged to the outside from the discharge port of the formation at the rear, in front of the vertical line passing through the center point of the dust discharge fan , and The position set above the horizontal line passing through the center point of the dust exhaust fan is set as the start position, and the distance between the upper part of the dust exhaust fan and the fan case ceiling is increased toward the rear side, and the rear part of the swing sorter Each discharge from the processing chamber and fan case arranged on the left and right above Is arranged adjacent to the left and right above the rear end of the swinging sorter, and a notch for communicating the processing chamber outlet and the fan case outlet is formed in the side plate on the processing chamber side of the fan case. The threshing apparatus is characterized in that at least a part of the discharge discharged from the discharge port of the processing chamber is discharged into the discharge port of the fan case .
With this configuration, not only can a sufficient gap be ensured between the rear part of the dust exhaust fan and the rear surface of the fan case, but the timing at which the dust is separated from the dust exhaust fan can be accelerated, and as a result, the dust can be carried around. This can reduce the suction efficiency of the dust exhaust fan.

  Next, embodiments of the present invention will be described with reference to the drawings. 1-3, 1 is the threshing apparatus which concerns on embodiment of this invention, Comprising: This threshing apparatus 1 is the threshing feed chain 2 which conveys a stalk, and the handling chamber 3 which threshs grain from a stalk. The processing chamber 4 for processing the unprocessed material sent from the processing chamber 3, the sorting chamber 5 for selecting the grain, the waste chain 6 for transporting the threshed waste, and the cutter for finely cutting the waste 7.

  The handling chamber 3 is provided with a handling cylinder 8 that rotates about a support shaft that faces forward and backward, and the rotation of the handling cylinder 8 causes the grain to thresh. The grain threshed by the handling cylinder 8 leaks to the sorting room 5 through the receiving net 9 and reaches the terminal part (rear end) of the handling room 3 without leaking from the receiving net 9. The unprocessed material is fed into the processing chamber 4 through the dust feeding port 10.

  The processing chamber 4 is internally provided with a processing cylinder 11 that rotates about the support shaft that faces forward and backward, and the rotation of the processing cylinder 11 converts the unprocessed material into a single grain. Then, the grains made into a single grain by the processing cylinder 11 leak into the sorting chamber 5 through the second receiving net 12, while not leaking from the receiving net 12 and the end portion (rear side) of the processing chamber 4. The unprocessed material reaching the end portion is discharged from the discharge port 13 toward the outside of the apparatus.

  In the sorting chamber 5, a swing sorting body 14 for swinging and sorting the grains, sorting fans 15 and 16 for raising the sorting wind, and dust in the sorting chamber 5 are sucked out and discharged outside the apparatus. A chamber 17, a first spiral 18 for transporting the first object, and a second spiral 19 for transporting the second object are provided. The swing sorter 14 includes a swing flow plate 20, a chaff sheave 21, a grain sheave 22, a stroller 23, and the like, and is periodically reciprocated by a swing mechanism (not shown) such as a crank mechanism. The

  The dust discharge chamber 17 includes a fan case 24 disposed above the rear end of the swinging sorter 14 and a cross-flow type dust discharge fan 25 disposed in the fan case 24. The dust in the sorting chamber 5 is sucked from the suction port 26 formed at the front portion of the fan case 24 and discharged from the discharge port 27 formed at the rear portion of the fan case 24 toward the outside of the apparatus. With such a configuration, the dust exhaust chamber 17 is positioned in the passage path of the main sorting air generated by the sorting fan 15 and the dust in the sorting chamber 5 can be efficiently sucked.

  The fan case 24 includes a pair of left and right side plates 28 that form the left and right side surfaces of the dust chamber 17, a top plate 29 that forms the ceiling and rear surfaces of the dust chamber 17, and a bottom plate 30 that forms the bottom surface of the dust chamber 17. And is configured. When the dust exhaust fan 25 is rotated in the direction of the arrow in FIG. 1, the distance between the upper portion of the dust exhaust fan 25 and the ceiling surface of the fan case 24 is gradually increased toward the rear side. This is to promote the separation of dust while increasing the suction efficiency of the dust exhaust fan 25.

  In the threshing apparatus 1 according to the embodiment of the present invention, when the interval between the upper portion of the dust exhaust fan 25 and the ceiling surface of the fan case 24 is increased toward the rear side, the spread start position A is the center of the dust exhaust fan 25. It is set ahead of the vertical line C passing through the point B and above the horizontal line D passing through the center point B of the dust exhaust fan 25. In this way, not only can a sufficient gap be secured between the rear portion of the dust exhaust fan 25 and the rear surface of the fan case 24, but the timing at which the dust is separated from the dust exhaust fan 25 can be accelerated, so And the suction efficiency of the dust exhaust fan 25 can be increased.

  Moreover, it is preferable that the space | interval E of the rear part of the dust exhaust fan 25 and the rear surface of the fan case 24 is set to about the radius F of the dust exhaust fan 25 or more. In this way, the separation of dust is further promoted, so that the suction efficiency can be further improved.

  Further, the rear end position of the swing sorter 14 is preferably set within the front-rear width G of the discharge port 27. In this way, the rear end portion of the rocking sorter 14 and the discharge port 27 of the fan case 24 are overlapped to shorten the front-rear length of the threshing device 1 or extend the length of the rocking sorter 14. It becomes possible to do. In the case of the layout as described above, there is a concern that the dust flows backward from the gap between the rear end of the swinging sorter 14 and the bottom plate 30 of the fan case 24. Since the sorting wind blows through, there is almost no possibility that the dust will flow backward.

  By the way, it is preferable that the waste discharged from the processing chamber 4 to the outside of the apparatus is diffused as much as possible without forming a lump. This is because post-processing (incineration processing, etc.) of the effluent discharged to the field is easy. However, due to the relationship with the layout in the threshing apparatus 1, the discharge port 13 of the processing chamber 4 may not be widened. In this case, the discharge from the processing chamber 4 is not sufficiently diffused and easily becomes a lump. There is a problem. For example, in the threshing apparatus 1 in which the processing chamber 4 and the dust exhaust fan 25 are arranged side by side, the discharge port 13 of the processing chamber 4 is narrowed by the fan case 24 of the dust exhaust fan 25.

  Therefore, in the threshing apparatus 1 according to the embodiment of the present invention, at least a part of the discharge discharged from the discharge port 13 of the processing chamber 4 is discharged into the discharge port 27 of the fan case 24. In this way, not only the discharge port 13 of the processing chamber 4 is expanded, but also the dust discharged from the discharge port 13 of the processing chamber 4 is made to act on the discharge discharged by the dust fan 25 to diffuse the discharge. Can be promoted.

In this embodiment, as is clear from FIGS. 1 to 3, the discharge ports 13 and 27 of the processing chamber 4 and the fan case 24 arranged on the left and right above the rear part of the swing sorter 14 are provided with the swing sorter. It is arranged so as to be adjacent to the left and right above the rear end. A notch 28 a is formed in the side plate 28 of the fan case 24 on the processing chamber 4 side so that the discharge port 13 of the processing chamber 4 communicates with the discharge port 27 of the fan case 24. In this way, the discharge port 13 of the processing chamber 4 is communicated with the discharge port 27 of the fan case 24 by a simple change such that the notch 28a is formed in the side plate 28 of the fan case 24, and the discharge from the processing chamber 4 is performed. The object can be discharged into the discharge port 27 of the fan case 24. In addition, the formation position of the notch 28a is behind the dust exhaust fan 25, and the contact between the exhaust from the processing chamber 4 and the dust exhaust fan 25 is avoided.

  Moreover, in this embodiment, in providing the plate-shaped ejector 31 which jumps out discharge | emission at the outer peripheral surface termination | terminus part of the process cylinder 11 built in the process chamber 4, the ejector 31 is inclined with respect to a rotation direction. ing. If it does in this way, since the direction of the wind which winds by the jumping body 31 can be made to follow the dust exhaust air of the dust exhaust fan 25, disturbance of dust exhaust air can be prevented.

  According to the present embodiment configured as described above, the rocking sorter 14 for rocking and sorting the grains, the fan case 24 disposed above the rear end of the rocking sorter 14, and the fan case 24 In the threshing apparatus 1, which is provided with a cross-flow type dust exhaust fan 25 installed horizontally, and exhausts the dust exhaust air sucked from the suction port 26 at the front part of the fan case 24 from the discharge port 27 at the rear part of the fan case 24, In order to increase the distance between the upper portion of the dust exhaust fan 25 and the ceiling surface of the fan case 24 toward the rear side, the start position A of the spread is in front of the vertical line C passing through the center point B of the dust exhaust fan 25. In addition, since it is set above the horizontal line D passing through the center point B of the dust exhaust fan 25, not only can a sufficient gap be secured between the rear portion of the dust exhaust fan 25 and the rear surface of the fan case 24, but also dust can be collected. Separated from dust exhaust fan 25 Can accelerate the timing, the result, reduce the round robin dust, it is possible to increase the suction efficiency of the dust-exhaust fan 25.

  Further, since the distance E between the rear portion of the dust exhaust fan 25 and the rear surface of the fan case 24 is set to be about the radius F of the dust exhaust fan 25 or more, the separation of dust is further promoted and the suction efficiency is further improved. Can be improved.

  Further, since the rear end position of the swing sorting body 14 is set within the front-rear width of the discharge port 27, the rear end portion of the swing sorting body 14 and the discharge port 27 of the fan case 24 are overlapped, thereby threshing. It becomes possible to shorten the length of the apparatus 1 in the front-rear direction and to extend the length of the swing sorter 14.

It is an internal side view of a threshing apparatus. It is an internal top view of a threshing apparatus. It is an internal rear view of a threshing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Threshing apparatus 3 Handling room 4 Processing room 5 Sorting room 8 Handling cylinder 11 Processing cylinder 14 Oscillating sorter 17 Dust removal room 24 Fan case 25 Dust removal fan 26 Suction port 27 Drainage port 28 Side plate 29 Top plate 30 Bottom plate

Claims (1)

A treatment room for threshing the grains from the stems, a sorting room provided with a rocking sorter for rocking and sorting the grains, and a treatment room for processing unprocessed materials sent from the handling room are installed horizontally. And a fan case in which dust wind from the sorting chamber is sucked from the suction port formed in the front and discharged from the discharge port formed in the rear toward the outside of the machine. In the threshing apparatus, the upper part of the dust exhaust fan is set as a start position where a position set in front of a vertical line passing through the center point of the dust exhaust fan and above a horizontal line passing through the center point of the dust exhaust fan is set as a start position. And the fan case ceiling surface are widened toward the rear side, and the discharge ports of the processing chamber and the fan case arranged on the left and right above the rear part of the swinging sorter are arranged left and right above the rear end of the swinging sorter. Placed on the side plate on the processing chamber side of the fan case. An outlet and a fan case outlet to form a notch for communicating, at least a portion of the effluent discharged from the discharge port of the processing chamber, and characterized in that to the catch mouth of the fan case Threshing device to do.

Images