JPH0810265Y2 - Dust disposal equipment in threshing machine - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention is directed to the processing of dust in a thresher, particularly a thresher in which a suction fan is arranged below a second material sorting section provided at the end of the sorting air passage. It relates to the device.

Conventional technology Threshing machines such as combine harvesters and harvesters are transported by a grain culm transport chain and at the same time threshed by a threshing section having a handling cylinder, etc. , Swirling and wind-sorting to the second product and dust, the first product is recovered by the first spiral body, and the second product is returned to the sorting section or threshing section via the second spiral body and reprocessed. Further, the dust is discharged to the outside of the machine by the suction fan.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention By the way, since the suction fan for treating the above-mentioned dust is generally disposed on one side of the sorting width of the threshing machine main body and above the sorting portion such as a chaff sieve, the dust is removed. In the outflow route, it becomes impossible, and the heavy weight such as cuttings and long straws remain inside the machine due to insufficient suction force (sucking force) of the suction fan, or inside the machine due to insufficient suction force on the other side where the suction fan is installed. There was a problem of residue. Therefore, it is possible to arrange a suction fan in the lower rear part of the second object sorting section provided at the terminal end of the sorting air passage to facilitate suction of heavy-weight cuts and long straws, but in this case as well. If the suction fan is arranged on one side of the selection width, there is a problem that the suction force is insufficient on the other side, and the rearward protrusion amount of the suction fan is large, and the size of the entire machine body becomes large.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dust disposal device for a thresher capable of improving the suction efficiency of a selective suction fan and having a small amount of protrusion outside the machine.

Means for Solving the Problems In order to achieve the object, the present invention transfers a second product from the lower end of the second product selecting unit below the second product selecting unit provided at the end of the selecting air passage. In a thresher provided with a second flow plate that is inclined downward toward the second spiral body for use, the end portion side of the second flow plate is formed in a gentle inclination shape, and the second spiral body side is formed in a steep inclination shape. The gist of the present invention is that a recess is formed on the lower side of the second flow plate, and a suction fan is provided directly below the second flow plate so as to be inserted into the recess.

The object to be threshed by the handling cylinder is oscillated / wind pressure sorted by the sorting section into the first one, the second one, and the dust, and the first one is harvested by the first spiral, and the second one is It is returned to the threshing section via the second spiral and reprocessed, and the dust is discharged to the outside of the machine by the suction fan. At this time, since the suction fan is installed so as to enter the recess formed on the lower side of the second flow plate, the intake port of the suction fan is close to the end of the second sorter and is within the sorting width. Therefore, since the dust is efficiently sucked over the entire width of the sorting width by the suction fan, the dust can be discharged outside the machine without remaining inside the machine.

Moreover, by inserting the suction fan into the recess, it is possible to reduce the amount of rearward projection of the suction fan as much as possible.

Embodiment An embodiment of the thresher of the present invention will be described with reference to the drawings.

In the figure, thresher A such as combine harvester
Conveys the culm after cutting with the feed chain 1,
The threshing section B consisting of the handling cylinder 2 and the processing cylinder 3 threshes, and the processed objects after threshing are sorted by the sorting section C, such as the best products (not shown) such as fine grain, and the cuttings and the branch adhering grains. Second item (not shown)
In addition, it is configured such that it is sorted into dusts (not shown) such as cullets and straw wastes, and the grains are collected or discharged outside the machine, respectively.

The sorting unit C is configured to perform sorting work of the first item, the second item, the dust, etc. while swinging and transporting the object to be processed with the grain culm transport direction of the feed chain 1 as the front-rear direction. . That is, a receiving net 2b is provided below the handling chamber 2a of the threshing section B, and the non-perforated corrugated plate 4a and the non-perforated corrugated plate 4a are located below the receiving net 2b and extend from the starting end of the handling drum 2 to the middle part of the processing drum 3. A chaff sheave 4 composed of cross rails 4b with adjustable mesh is provided, a first compressed air fan T ₁ is provided below the non-corrugated corrugated plate 4a, and a non-perforated corrugated sheet 5a and A grain sheave 5 having crimp nets 5b arranged in front and rear is provided, and further, a non-perforated corrugated plate 5a
The second compressed air fan T ₂ below, and the first mouth 6 below the crimp net 5b, and the first spiral 7 provided at the first mouth 6 collects the first thing, The material and the dust are transferred onto the second product selection section 8 adjacent to the leakage net 5b of the Glen sieve 5 by the compressed air from the second compressed air fan T ₂ and the compressed air from the first compressed air fan T _1. The second product is returned to the selection unit C via the second spiral body 9 by the wind-transferred and further compressed air from the third compressed air fan T ₃ provided below the second product selection unit 8. The dust is discharged to the outside of the machine by a suction fan 10 provided at the lower part on the lower side in the grain culm transfer direction, that is, the rear part.

The suction fan 10 is located below the second object selecting section 8 provided at the end of the selecting air passage, and the second object selected by the second object selecting section 8 flows down to the second spiral body 9. The second flow plate 11 is provided so as to incline downward from the lower end of the second material selection section 8 toward the second spiral body 9.
Is bent inward in the middle of the selection width so that the end portion side (upper side) of the second flow plate 11 is gently inclined with respect to the second spiral body 9 side (lower side). Thus, the second spiral plate 11 is formed so that the second spiral body side is steeply inclined, and with this structure, the recess 12 is formed on the outer lower side. Then, the suction fan 10 is connected to the second flow plate 11
Immediately underneath, near the center of the selection width, the recess 12 is disposed so as to enter the recess 12 from the rear. Also, FIGS. 2 to 3
As shown in the figure, a fan 14 is rotatably provided via a drive shaft 15 in a state of being covered with a fan case 13 having openings 13a and 13b on both side surfaces, and a suction port 16 opened upward.
The inclined lower plate 16b of the guide plate 16 having a and the fan case
The bottom plate 13c of 13 is integrally connected, and the third compressed air fan T
_The dust picked in ₃ is taken in through the suction port 16a of the guide plate 16, and the suction force of the fan 14 causes the opening 13 of the fan case 13 to open.
It is configured to suck from a and 13b and discharge from the discharge port 17 to the outside of the machine.

In addition, in the above-mentioned embodiment, a configuration in which a plurality of (three) compressed air fans for selecting the processed object after threshing are arranged is disclosed, but the number of compressed air fans is limited to the illustrated example. Instead of the one, it may be provided at one rear end in the grain culm transport direction. By the way, since the second flow plate 11 is bent inward from the middle part in the downward direction, the upper part 11a has a gentle slope and the lower part 11b has a steep slope from the bent part. By directing the sorting wind of the fan T ₃ to the upper portion 11a, the sorting performance in the upper portion 11a is improved, and since the sorting wind does not hit the lower portion 11b of the second flow plate 11, it has been sorted. The second flow of No. 2 is prevented from flowing backward or staying at the downstream end. Therefore, the lower part 11
There is little adhesion of the second product at b, and the second product can be collected smoothly and reliably.

Further, as shown in FIG. 1, the spiral member 18 may be fixed to the drive shaft 15 of the suction fan 10 so that the long straw or the like does not get entangled with the drive shaft 15.

In the above configuration, the grain culms after cutting are threshed by the threshing unit B, and the objects to be treated such as the first one, the second one, and the waste are
After being pre-sorted by the first compressed air fan T _1, further selected by the compressed air from the second compressed air fan T ₂ on the Glensieve 5, the first product is recovered by the first spiral body 7, and For the second and the dust, the third compressed air fan T ₃ on the second sorting section 8
After being carefully selected by the compressed air from the No. 2, the second product is reduced to the sorting unit C through the second spiral body 9 etc. and reprocessed, and the dust is disposed in the state of being close to the second flow plate 11. It is smoothly discharged to the outside of the machine through the suction port 16a of the suction fan 10 without remaining in the machine.

By the way, the suction fan 10 enters the recess 12 formed on the lower side of the second flow plate 11 by gently sloping the terminal end side of the second flow plate 11 and steeply sloping the second spiral body 9 side, Since it is provided in the sorting width directly below the flow plate 11, the suction port 16a of the suction fan 10 is closer to the rear end side of the sorting air passage where the dust is directed, and is disposed in the falling direction due to the weight of the dust. In combination with the ideal arrangement described above, the suction action of the dust is extremely excellent. Moreover, since the suction action is performed substantially uniformly over the sorting width without being biased to one side, the suction efficiency is further improved.

Advantageous Effect of the Invention As described above, the present invention directs the second spiral for transferring the second product from the lower end of the second product selecting section below the second product selecting section provided at the end of the selecting air passage. In a thresher provided with a second flow plate that descends and inclines, the end portion side of the second flow plate is formed in a gentle slope, and the second spiral body side is formed in a steep slope, thereby forming a second flow plate. A recess is formed on the lower side, and by providing a suction fan by entering the recess just below the second flow plate, the suction port of the suction fan is on the lower side in the falling direction due to the weight of the dust. Moreover, it can be positioned in the sorting width in a state of being closer to the end side of the second sorter, and exerts a good suction action over the entire width of the sorting width.
The suction efficiency can be improved.

Moreover, while the suction efficiency can be improved as described above, the amount of the suction fan protruding outside the machine can be reduced as much as possible, and thus a compact threshing machine can be provided.

[Brief description of drawings]

The drawings show an embodiment of the thresher according to the present invention. Fig. 1 is a side view showing the overall structure of the thresher, Fig. 2 is a rear view of the thresher, and Fig. 3 is a plan view of the thresher. is there. A: Thresher, 8: Second picking section, 9: Second spiral, 10: Suction fan, 11: Second flow plate, 12: Recess.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takao Komura, 667, Izaya-cho, Higashi-Izumo-cho, Yazuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. Address 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Yoichi Yamane 667 Izuya-cho, Higashi Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. Examiner Mitsunari Takahashi (56) Bibliography Sho 63-178426 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A second No. 2 inclined downward from a lower end of the second No. selection section provided at a terminal end of the selection air duct toward a second spiral for transferring the No. 2 second article. In a threshing machine provided with a flow plate, the end portion side of the second flow plate is formed in a gentle slope shape and the second spiral side is formed in a steep slope shape, and a concave portion is formed under the second flow plate. At the same time, a dust-disposal treatment device is provided, which is provided immediately below the second flow plate so as to be inserted into the concave portion to provide a suction fan.