JPH0414989Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is designed to remove dust such as straw that has been sieved by a swinging sorter mounted below the handling room and sent to the terminal side, to the rear of the aircraft. This invention relates to a dust collection device for a reaping and threshing machine, which prevents the dust from dispersing to the uncut side and hinders the next work when removing dust from the harvest, and which facilitates the subsequent disposal of the dust.

(b) Prior art In a threshing machine similar to the above, in order to exhaust dust such as straw waste generated by the threshing action to the outside of the machine, suction dust exhaust fans are placed opposite each other on both sides of the machine body. Japanese Utility Model Publication No. 37-11248 discloses a conventional technology that is designed to improve sorting and eliminate No. 3 loss by preventing the sorting air from drifting due to the suction action of the suction dust exhaust fan. It is well known that the threshing machine described in this publication is a stationary type, and its suction dust fans are of the same size, and the dust is sucked and ejected by both dust fans. Both of these are configured to scatter the dust toward the rear and are not intended to collect dust.

(c) Problems to be solved by the invention The present invention is different from the conventional one as described above, which aims to improve the sorting and eliminate the No. 3 loss by installing suction dust exhaust fans on both sides of the machine. However, since the structure is not intended to collect the dust that is sucked and discharged by this suction dust exhaust fan, the above-mentioned dust is dispersed to the unharvested side and becomes a hindrance to the next operation, especially when used as a reaping and threshing machine. This idea was developed with the aim of not only preventing this from occurring, but also making the subsequent disposal of the waste dust easier.

(d) Means for solving the problems In order to achieve the above object, the present invention is constructed as follows.

In other words, suction dust exhaust fans are installed opposite to each other on both ends of the oscillating sorter installed in the lower part of the handling room, and the suction exhaust air volume of the opposite suction dust exhaust fans on the uncut side is set to be equal to the suction exhaust air volume on the uncut side. The dust exhaust fan is larger than the suction dust exhaust fan, and each dust exhaust tube of the suction dust exhaust fan extends rearward and downward, so that the dust ejected from the dust exhaust tubes intersects with each other.

(e) Effect With the configuration described in the previous section (d), the material to be handled from the handling room is sent to the terminal side while being sieved by the oscillating sorter, and dust such as straw is suctioned from both sides. The dust is sucked in by a dust exhaust fan and the dust is ejected backwards and downwards from inside each dust exhaust cylinder, but the suction and discharge air volume of the suction dust fan on the uncut side is larger than that of the suction dust fan on the mowed side. When the dust from each dust exhaust pipe intersects, the dust ejected from the dust exhaust pipe of the suction dust exhaust fan on the uncut side pushes the dust coming from the cut side towards the cut side, and from the uncut side. This mixes with the ejected dust and causes the dust to be collected on the side that has already been cut.

(f) Examples The present invention will be described in detail below with reference to embodiment figures.

As shown in Fig. 3, this reaping and threshing machine is equipped with a threshing device A on the left side of a running frame 2 with crawlers 1 on both sides, and a driver's seat B and a grain storage section C on the right side. A reaping section D is provided at the front, and the reaped grain culm is transferred to the feed chain 3 as the aircraft advances.
The structure is such that the threshing process is passed on to the next generation.

To explain the above-mentioned threshing device A with reference to Figs. 1 and 2, 4 is a handling chamber containing a handling cylinder, the handling cylinder is rotated in the direction A and configured in a so-called lower handling type, and 4 is a handling chamber 4. It is a swinging sorting body that swings back and forth below and receives and separates the unloaded material from the handling chamber 4 and the leaked material from the processing barrel chamber 7, which will be described later, from the starting end at the front to the terminal end at the rear. A feed pan 5, a chaff sheave 5a, and a stroke rack 5b are installed in sequence, and a grain sheave 5 is placed below the chaf sheave 5a.
c is provided, and furthermore, a sorting fin 5d is installed from the bottom to the end of the stroke rack 5b, so that these fins swing together as one.

Reference numeral 6 denotes a pressure fan installed below the starting end side of the oscillating sorting body a. The processing barrel chamber 7 is installed horizontally at the terminal end of the swinging sorter a, that is, above the sorting fins 5d, perpendicular to the back and forth swinging direction, so as to receive the unprocessed materials sent out from above the stroke rack 5b. It has a built-in processing cylinder 8 that rotates in the direction B.

An arc-shaped concave 9 is installed in the lower part forming the processing barrel chamber 7, and the front and rear parts of this installation are supported by guide plates 10 and support plates 11 installed horizontally on both sides. Supported. The upper part is formed of a cover plate 12, and the upper end of this cover plate 12 is connected to a bottom plate 14 which serves as a passage 13 for the culm to be transported rearward from the handling chamber 4.

Reference numerals 15 and 16 indicate suction and dust removal fans, both of which have suction ports 17 and 18 above the stroke rack 5b that constitutes the terminal end of the swing sorting body a on the front side of the processing barrel chamber 7.
They are respectively attached to both side walls 19 and 20 so as to open facing each other.

The suction and dust removal fans 15 and 16 have different sizes of suction barrels, and the suction and discharge air volume of the suction and dust removal fan 15 on the uncut side (left side) is made larger than that of the suction and dust removal fan 16 on the right side (already cut). It is configured.

Dust exhaust tubes 20 and 21 extend rearward and downward from the suction cylinders of the suction and dust exhaust fans 15 and 16 along both side walls 19 and 20, respectively, and guide portions 21a whose lower ends are bent inwardly, 22a.

The height of the suction ports 17 and 18 facing each other with respect to the stroke rack 5b is such that the suction port 18 on the right side is higher than the suction port 17 on the left side. Also 23 is 1
Parts removal gutter, 24 is second part gutter, 25 is thrower,
26 is a processing chamber installed in parallel with the processing chamber 4.

Therefore, as the machine advances, the harvested grain culm is handed over to the feed chain 3 and threshed in the handling room 4, and the waste culm is discharged from the passage 13 to the rear of the machine to be processed as appropriate. The materials handled from 4 are sorted by the back-and-forth swinging of the oscillating sorting body a and the sorting air of the pressure fan 6, and dust such as straw is sucked and discharged by the suction and dust removal fans 15 and 16 on both sides. Unprocessed items such as ear cuts and grains with branches are fed from the end of the stroke rack 5b through the guide plate 10 into the processing barrel chamber 7, and are discharged forward by the processing barrel 8 rotating in the direction A. It is processed.

The dust generated by this processing action is sucked and discharged by the suction dust exhaust fans 15 and 16, and the leakage from the concave 9 is separated into culms and stems by the swinging of the sorting fins 5d, and the terminal ends thereof are separated. It is discharged from

In addition, the grains in the first product takeout gutter 23 are stored in the grain storage section C.
The waste that flows into the second gutter 24 is lifted up into the processing chamber 26 by the thrower 25 and then reprocessed.

In this way, the materials to be handled from the handling room 4 are sorted, and dust such as straw is removed by the suction dust exhaust fans 15 and 16.
The dust sucked into the suction and dust removal fans 15 and 16 is discharged backward and downward inside the dust removal tubes 21 and 22, respectively, and is mutually removed by the guide portions 21a and 22a at the lower ends. Then, as shown in Fig. 4, it turns inward and ejects in the direction of arrow C and the direction of arrow D, intersecting each other. In this case, since the dust ejection force from the suction dust exhaust fan 15 on the uncut side is large, the dust from the cut side is pushed away and the dust is collected biased towards the cut side as shown in E. The state is formed into strips as the aircraft advances.

At this time, use a straw cutter (not shown).
If the straw cutter is connected to the rear of the threshing device A, the cut straw that is cut by the straw cutter and falls will also be collected inside by the dust ejected from both sides of the straw cutter.

(g) Effects of the invention As detailed above, the present invention provides suction dust exhaust fans facing each other on both ends of the swing sorting body mounted below the handling chamber, and The suction and discharge air volume of the suction dust exhaustion fan is made larger than that of the suction dust exhaustion fan on the mowing side, and each dust exhaust tube of the suction dust exhaustion fan is extended rearward and downward, and the dust is ejected from the dust exhaust tube. Since the structure is such that dust such as straw is sucked out by the suction dust fans installed on both sides of the uncut side and the cut side, the suction dust exhaust fans on the uncut side are When the suction and exhaust air volume is made larger than that of the suction and dust exhaust fan on the mowed side, the dust emitted from each dust exhaust pipe is crossed, and the dust emitted from the mowed side is caused by the dust emitted from the unmoved side. It is pushed to the mowed side and mixed with the dust on the uncut side, and the dust is collected biased toward the mowed side, so there is no dust scattered to the uncut side, and the dust does not get in the way of the next mowing operation. Smooth reaping work can be done without any problems.
Further, it has become possible to easily carry out subsequent processing operations such as when transporting waste dust out of the field.

[Brief explanation of drawings]

The drawings show an embodiment of the dust collecting device according to the present invention, and FIG. 1 shows a cross-sectional plan view of the threshing device, FIG. 2 shows a longitudinal sectional side view of the threshing device, and FIG. 3 shows a reaping threshing device equipped with this threshing device. A side view of the external appearance of the machine is shown, and FIG. 4 is an explanatory diagram of the operation of the same reaping and threshing machine seen from the rear. 4... Handling room, a... Rocking sorter, 15, 16...
...Suction dust exhaust fan, 21, 22...dust exhaust cylinder.

Claims (1)

[Scope of utility model registration request] Suction dust exhaust fans 15 and 16 are provided facing each other on both ends of the swinging sorter a mounted below the handling chamber 4, and the suction exhaust air volume of the suction dust exhaust fans 15 on the opposite uncut side is adjusted. The suction dust exhaust fan 15 is made larger than the suction dust exhaust fan 16 on the mowed side, and the suction dust exhaust fan 15,
A dust collecting device for a reaping and threshing machine, characterized in that each of sixteen dust exhaust tubes 21 and 22 is configured to extend rearward and downward, and the dust ejected from the dust exhaust tubes 21 and 22 intersect with each other.