JPH046521Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention is for threshing rice, wheat, other grains, beans, etc., and is a threshing machine that is a stationary type or is mounted on the base of a harvester or combine harvester. This invention relates to a sorting device.

(b) Conventional technology Conventionally, a leakage sorting conveyor was installed at the bottom of the receiving net, and the grains were leaked while conveying the threshed grains from the receiving net, and the leaked grains were sent to the bottom of the leakage sorting conveyor. A threshing machine in which grains are selected by wind and dropped into the first receiving trough is already known from Japanese Utility Model Publication No. 1983-645.

(c) Problems to be solved by the invention Generally, small pieces of straw leak out together with the grains from the receiving screen in the handling room. Even if the threshed grains were conveyed using a conveyor having leakage holes, there was a drawback that the straw debris became an obstacle and the leakage of the grains was insufficient, resulting in the single grains being transferred to the second receiving trough. .

In addition, if the return side of the conveyor is placed directly above the receiving gutter, the straw waste that leaked out along with the grains during the forward journey will clog the mesh of the conveyor that is rotating on the lower side, resulting in short-term sorting performance. This phenomenon occurred particularly markedly when the threshing was wet.

(d) Means for solving the problem The present invention is to install a leakage sorting conveyor that faces the most above the receiving gutter below the receiving gutter in the handling room, and to have a discharge port on the starting end side of the leakage sorting conveyor. The above-mentioned problem can be solved by providing a blower windmill with an opening facing between the leakage sorting conveyor and the receiving gutter, and installing the leakage sorting conveyor so that its return side bypasses the lower part of the receiving gutter. solved.

(e) Operation: As the handling drum rotates in the handling room, grains that have been made into single grains and relatively small pieces of straw, etc., fall from the receiving net toward the leakage sorting conveyor.

At that time, the sorting air discharged from the outlet of the blower windmill blows between the catch net and the leakage sorting conveyor, so the straw waste falling from the catch net during threshing is removed by the sorting wind, and the waste is removed by the sorting wind. There is very little accumulation on the lower sorting conveyor, and the grains can be leaked while being transferred, and the leaked grains fall into the first receiving gutter and are carried out of the machine.

(f) Example An example of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a handling cylinder which is mounted on a shaft in a handling room 2, and a feed chain 3a and a pinching rail 3b are provided along the handling opening, and a receiving net 4 is stretched from the lower part of the handling cylinder 1 to the back side. , the stock side is held and conveyed between the feed chain 3a and the pinching rail 3b, and the panicle side is conveyed through the feed port 5a.
The grain culm inserted into the handling chamber 2 is threshed by the handling cylinder 1, and the waste straw discharged from the culm discharge port 5b is transported and discharged by the waste straw conveying device 6.

In addition, a leakage sorting conveyor 10 is installed between the upper rolls 7, 7 which are pivotally supported at the lower part of the starting end and the lower end of the receiving gutter 4, and the lower rolls 9, 9 which are closest to the front and back of the lower part of the receiving gutter 8. Yes, the leakage sorting conveyor 10
consists of a mesh conveyor or a belt conveyor having a large number of leakage holes 10a as shown in Fig. 3, and the conveying side is spaced apart from the receiving net 4, and the returning side is It detours below the first receiving gutter 8.

A blower windmill 11 is installed at the transfer start end of the leakage sorting conveyor 10, and a discharge port of the blower windmill 11 opens between the receiving net 4 and the leakage sorting conveyor 10, and the sorting wind passes between them and blows through towards the suction windmill 12 provided above the rear.

Further, a second receiving gutter 13 is provided below the terminal end of the leakage sorting conveyor 10, and between the second receiving gutter 13 and the leakage sorting conveyor 10, overlapping or adjacent parts are rotated downward. A pair of moving front and rear rolls 14, 14 made of rubber or sponge are pivotally supported, and by varying their circumferential speeds, the second items are collected and dropped into the second receiving gutter 13 while being processed. is transferred to the side of the fuselage by the second transfer spiral 15,
The second thrower 16 returns this to the handling room 2.

Further, on the conveying surface of the leakage sorting conveyor 10, as shown in FIGS. 1, 3b, and 4, the lower surface is close to the leakage sorting conveyor 10, and the upper surface is inclined upward in the conveying direction. A plurality of guide rods 18 each having a triangular cross section are provided diagonally.

In the above-mentioned threshing machine, the grains and small straw waste etc. leaking from the receiving net 4 are sorted by the sorting wind of the blower windmill 11, the straw waste is blown backward, and the grains are placed on the leakage sorting conveyor 10. The material to be sorted falls into the first receiving gutter 8 through the numerous holes 10a, and is scooped out with the guide rod 18, with the grains on the bottom and the straw waste on the top, in the middle of the conveyance. Since the grains are raised and exposed to the sorting wind, the grains and straw waste can be sufficiently blown away.

At this time, the return side of the leakage sorting conveyor 10 bypasses the lower part of the first receiving gutter 8, so that there is no obstruction when the grains fall into the first receiving gutter 8, and The grains that have fallen into the gutter 8 are transferred to one side of the machine by the first transfer spiral 8a, and transferred to the grain tank 21 of the combine (if the threshing machine is mounted on the combine machine base) by the grain lifting cylinder 20. Injected.

In addition, relatively large straw waste, ear scraps, etc. discharged from the dust inlet 19 provided at the terminal end of the handling chamber 2 fall near the terminal end of the leakage sorting conveyor 10 and are screened by the wind turbine 12. sucks the vicinity of the end of the leakage sorting conveyor 10 and discharges straw and dust to the outside of the machine.

Further, the second item falling from the end of the leakage sorting conveyor 10 is collected by the pair of rolls 14, 14 and treated by the difference in speed, and then falls into the second receiving gutter 13 and transported to the handling room 2. The number will be returned.

(g) Effects of the invention Since the invention is constructed as described above, the deflated grains leaking from the receiving net 4 in the handling room 2 are filtered by the sorting air from the blower windmill 11 while they reach the leakage sorting conveyor 10. The straw waste can be removed by air sorting, and the leakage sorting performance of the leakage sorting conveyor 10 can be significantly improved.

In addition, since the sorting performance of the leakage sorting conveyor 10 has been improved, it is extremely rare for grains to be mixed into the second product, and grains can be prevented from falling off or being damaged.

Furthermore, since the return side of the leakage sorting conveyor 10 bypasses the lower part of the receiving gutter, even if the grain is being threshed wet, the straw waste that leaked during the forward process will not accumulate on the return side like in the conventional conveyor. Good leakage sorting can be carried out over a long period of time without the straw sticking, sticking, or getting stuck in the mesh.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a longitudinal sectional view of the threshing machine, Figure 2 is a cross-sectional view of the same as above, Figure 3a is a perspective view of the leakage sorting conveyor, b is a sectional view of the leakage sorting conveyor and guide rod, and Figure 4 is It is a perspective view same as the above. 1 is a handling barrel, 2 is a handling room, 4 is a receiving net, 7, 7 is an upper roll, 8 is a first receiving gutter, 9 is a lower roll, 10 is a leakage sorting conveyor, 11 is a blower windmill, 12 is a suction windmill , 14 is a roll.

Claims (1)

[Scope of utility model registration request] A leakage sorting conveyor 10 facing the most above the receiving gutter 8 is installed below the receiving gutter 4 in the handling room 2, and a discharge port is connected to the leakage sorting conveyor 1 at the starting end side of the leakage sorting conveyor 10.
0 and the receiving gutter 4, and the leakage sorting conveyor 10 is stretched so that its return side bypasses the lower part of the receiving gutter 8. Machine sorting device.