JPS62778Y2 - - Google Patents

Description

[Detailed description of the invention] This invention wind-selects grains that have been harvested and threshed using a combine harvester or the like before drying them using a dryer or the like, thereby increasing the efficiency of post-processing of the grains such as drying and hulling. This invention relates to a coarse sorting machine that separates and removes impurities such as rice cake and straw waste. Conventionally,
A technology has been developed that uses a scalper to remove straw and other debris from grains before they are dried.

The above-mentioned conventional technology expands or reduces the sorting surface of the scalper depending on the input amount of grains, thereby improving the accuracy of sorting out straw waste, etc. However, small foreign matter is removed from the grains that have passed through the scalper by air sorting. When removing the particles, if the wind force is constant, the sorting power during this wind sorting tends to be uneven, and there is a problem that it is not easy to obtain appropriate sorting accuracy.

However, the present invention has a structure in which a scalper is attached to the lower part of a supply hopper into which sorted grains are input, and relatively large contaminants mixed in the sorted grains are removed by the scalper, and the sorted material is transferred to the scalper. Install the feeding gutter so that it can be moved,
A wind power regulating valve is provided in the circulation air passage for displacing the supply gutter in accordance with an increase or decrease in the amount of sorted grains to be sent out to expand or reduce the sorting surface of the scalper, and to remove small contaminants falling from the scalper. The present invention is characterized in that the adjustment valve is connected to the supply gutter so that the wind force adjustment valve adjusts the wind force in conjunction with the displacement of the supply gutter.

Therefore, it is possible to appropriately obtain the sorting power of the scalper in response to an increase or decrease in the input amount of sorted grains, and for example, when the number of sorted grains is small, the sorting action surface of the scalper is reduced and the straw waste is separated at that part. On the other hand, when there are many grains to be sorted, the sorting surface of the scalper can be enlarged to reliably separate the grains and straw waste, improving the sorting accuracy of the scalper, and improving circulation. By adjusting the sorting force of the air passage in conjunction with the adjustment of the sorting surface of the scalper, small foreign matter can be efficiently removed from the grains that have passed through the scalper, and the accuracy of sorting in the circulation air passage can be maintained appropriately. This makes it easier than ever to reduce sorting losses and improve sorting efficiency.

Embodiments of the present invention will be described in detail below based on the drawings. Fig. 1 is a longitudinal sectional view of the whole machine, and Fig. 2 is an explanatory diagram of the work. 3 is a feed roll installed at the lower outlet of the hopper 1 to sequentially discharge the grains therein, and 3 is a cylindrical sorting net 4 through which the grains pass, and a plurality of grain guide plates 5 placed horizontally inside the hopper. 6 is a first chute for supplying the grains sent out through the feed roll 2 to the scalper 3; 7 and 8 are second chutes for guiding the grains passing through the scalper 3; 9 is the scalper; 3, a third chute that guides large foreign matter (cut straw, etc.) caught on the surface of the sorting net 4; 10 is a motor for driving the upper part; A belt 14 is a chain that interlocks and connects the feed roll 2 and scalper 3 via sprockets 15 and 16, and the feed roll 2 and scalper 3 are continuously moved in one direction by the motor 10. the sorting net 4 of the scalper 3.
The structure is formed so that grains and small foreign matter passing through the screen are allowed to flow down below the scalper 3, while large foreign matter that is difficult to pass through the sorting net 4 is allowed to fall into a third chute 9.

Further, in the figure, 17 is the first conveyor horizontally suspended below the inclined lower end sides of the second chute 7, 8, 18 is the first gutter that covers the lower area of the first conveyor 17,
9 is a cross-flow type wind selection fan provided below the first gutter 18; 20 and 21 are connected to one end of the second chute 8 and the first gutter 18, and are connected to the feed start end of the closed circulation air passage 22; A first partition plate 23 forming the side of the second chute 7 is a second partition plate 23 provided below the other second chute 7 and connected to the other side end of the first gutter 18; A receiving plate 25, 26 is provided in the circulation air passage 22 between the chute 7 and the second partition plate 23 and allows the grains falling from the second chute 7, 8 to fall in a meandering manner; a third partition plate 27 connected to the inclined upper end side of each of the partition plates 23 and bent to form a circular air circulation passage 22;
28 is a second conveyor placed horizontally below the arcuate bent end of the circulation air passage 22 formed by the third partition plates 25 and 26; The second conveyor 27 is
A second gutter 29 covers the lower area, and a fourth partition plate 29 is connected to the other end of the second gutter 28 and the first outer partition plate 20 to form the return end side of the circulation air path 22. 30 is a motor for driving the lower part; 31 is a belt that interlocks and connects the first conveyor 17, the wind selection fan 19 and the motor 30 via pulleys 32, 33a and 34a; and 35 is the belt that connects the wind selection fan 19 and the second conveyor 27. It is a belt that is interlocked and connected via each pulley 33b, 36, and allows the circulating sorting air sent out from the wind sorting fan 19 to reach the top of the first gutter 18, and separates small foreign objects (rice cakes, etc.) that fall from the scalper 3. The air is discharged to the inclined upper end side of the second partition plate 23, and then the sorting air containing the small impurities is rotated by the guidance of the third partition plates 25, 26, and each partition plate 23, 26, 29, the sorting air is made to meander, and the centrifugal action of the sorting air removes small contaminants contained therein into the outer third
It is formed so that it falls along the partition plate 25 into the second gutter 28. Above the second gutter 28 is a first guide plate 37 which is an upwardly arcuate circulating sorting wind guide plate.
horizontally, and a first separation part 3 is provided between the outer third partition plate 25 and the end of the first guide plate 37 opposite thereto.
8, and a downwardly arcuate second guide plate 39 is connected to the inclined upper end of the fourth partition plate 29, and the second guide plate 39 is connected to the inner third partition plate 2.
6 and the tip portion extending in substantially the same direction as the first
A second separation section 40 is formed above the guide plate 37.
A dust collection passage 41 is provided between the fourth partition plate 29 and the end of the first guide plate 37 opposite thereto, and the dust collection passage 41 is provided above the second gutter 28 to remove foreign matter contained in the circulating sorting air in multiple stages. At the same time as separation and removal, wind selection fan 19
It is formed so that fine dust from the sorting wind that returns to the second separating section 40 is taken out and dropped into the second gutter 28 via a collection passage 41.

Furthermore, the first opening 42 that faces the feed end side of the first conveyor 17 is opened on the outside of the machine casing 43 on one side of the machine body, and the first chute 44 is installed on the outside of the machine casing 45 on the opposite side of the machine body. A second port 46 facing the feed end side of the second conveyor 27 is opened. A grain frying conveyor 47 is set up on the outside of the machine casing 45, and the outlet 48 at the upper end of the conveyor 47 faces the supply hopper 1.
A receiving hopper 49 is attached to the lower end of the conveyor 47 for inputting the grain to be lifted through the conveyor 47, and the lower end of the conveyor 47 is interlocked and connected to the lower drive motor 30 via the pulleys 34b, 50 and the belt 51. The second port 46 and the receiving hopper 4
9 are located on the same side, and the first opening 42 is located on the opposite side. A grain dryer 52 is installed close to the opening side of the first mouth 42, and a dryer elevator 53 is provided for supplying grain into the machine and for circulating the grain inside the machine, and for drying via the elevator 43. The dryer 52 is equipped with a dry receiving hopper 54 for supplying grains, and the first chute 44 communicating with the first mouth 42 faces the hopper 54.

Next, a supply gutter 55 is provided between the first chute 6 and the scalper 3, and the inclined upper end of the feed gutter 55 connected to the first chute 6 is rotatably attached to the machine casings 43, 45 via a support shaft 56. A rubber sheet 57 is integrally formed on the inclined lower end of the supply gutter 55 to support the scalper 3 and bring the inclined lower end of the supply gutter 55 close to the surface of the sorting net 4 of the scalper 3, and to adhere to the surface of the sorting net 4. A spring 58 for adjusting the sorting surface of the scalper 3 that supports the inclined lower end side in upward swinging is installed, and the inclined lower end of the supply gutter 55 is moved against the spring 58 according to the weight of the sorted grains flowing down into the supply gutter 55. The scalper 3 is configured to be swung downward to enlarge or reduce the sorting surface on the upper side of the scalper 3 in accordance with the amount of grains to be sorted.

In addition, the wind selection fan 19 on the upper surface of the fourth partition plate 29
A wind force control valve 59 is provided in the circulation air passage 22 on the suction side,
The wind power regulating valve 59 is supported by the machine casings 43 and 45 via support shafts 60 so as to be able to open and close freely, and the supply gutter 55 and the wind power regulating valve 59 are interlocked and connected by a link 61, and the sorted grains are The supply gutter 55 and the wind force control valve 59 are moved in conjunction with each other depending on the amount of grains to be sorted, and the sorting force of the wind selection fan 19 is increased or decreased depending on the amount of grains to be sorted.

The present invention is constructed as described above, and the grains that have been harvested and threshed using, for example, a combine harvester are put into the receiving hopper 49, and the grains are carried into the supply hopper 1 by the grain-lifting conveyor 47. A fixed amount of grain is dropped from the hopper 1 via the feed roll 2, and large foreign matter (such as long first straw) is dropped into the third chute 9 by the sorting net 4 of the scalper 3 below. The grain passing through the sorting net 4 is dropped downward from the second chute 7, 8, and the spring 58 is applied with resistance according to the amount of sorted grain to be dropped from the feed roll 2 onto the first chute 6 and the upper surface of the supply gutter 55. For example, when the amount of grains to be sorted increases, the supply gutter 55 swings downward due to this increase in weight, thereby expanding the sorting action surface on the upper side of the scalper 3. While increasing the sorting power of the scalper 3, for example, when the amount of grains to be sorted decreases, the supply gutter 55 is swung upward by the force of the spring 58, reducing the sorting surface on the upper side of the scalper 3 and separating the grains. The straw waste and the like are promptly discharged to the third chute 9. Also, in conjunction with the downward swinging of the supply gutter 55, the wind force control valve 5
9 opens to increase the sorting wind power of the wind selection fan 19, while the wind power control valve 59 closes in conjunction with the upward swinging of the supply gutter 55, and reversely increases the selection wind power of the wind selection fan 19. reduce Small impurities (such as rice cakes) that fall from the second chute 7 and 8 onto the upper surface of the first gutter 18 located below are removed by the circulating sorting air of the wind sorting fan 19, and the grains falling into the first gutter 18 are removed. (sorted grains) are sent to the first port 42 by the first conveyor 17, and the grains are sent to the first port 44 by the first conveyor 17.
The grains are supplied to a dry cargo receiving hopper 54 via a dryer elevator 53, and are carried into the dryer 52, where the grains are dried to the extent that, for example, a hulling operation can be performed. On the other hand, the sorting air moving from the top surface of the first gutter 18 to the third partition plates 25 and 26 is circulated in the first separation part 3 at the tip of the first guide plate 37.
8, the small contaminants contained in the sorting air are centrifuged and dropped onto the upper surface of the second gutter 28, and then the sorting air is made to meander through the fourth partition plate 29 and returned to the air sorting fan 19; The second separation part 40 at the tip of the second guide plate 39 above the first guide plate 37 separates the dust contained in the sorting air, and the dust collection passage 41 formed by the first guide plate 37 is opened. The small foreign objects and small dust are discharged from the machine via the second port 46 by the second conveyor 27, and the small foreign matter and small dust are discharged from the machine through the second port 46 near the second port 46. The circulating sorting air that returns to the wind sorting fan 19 through the multi-stage removal of contaminants contains almost no dust, and in particular, the passage 41 collects fine dust in an orderly manner. This prevents small dust from moving in the direction of the fourth partition plate 29 along with the sorting wind.

In the above embodiment, the supply gutter 55 is moved up and down to be displaced relative to the scalper 3, but the supply gutter 55 is slid back and forth in the direction toward and away from the scalper 3, and the inclined lower end of the supply gutter 55 is Even if the area of the rubber sheet 57 attached to the surface of the sorting net 4 is changed by moving the scalper 3 toward and away from the scalper 3, the sorting surface of the scalper 3 can be easily enlarged or reduced in the same manner as described above. 59 can also be slid back and forth to adjust the wind force in conjunction.

As is clear from the above embodiments, in the present invention, a scalper 3 is attached to the lower part of the supply hopper 1 into which sorted grains are fed, and the scalper 3 removes relatively large foreign substances mixed into the sorted grains. In the structure, a supply gutter 55 for sending the sorted material to the scalper 3 is displaceably attached, and the feed gutter 55 is displaced according to an increase or decrease in the amount of sorted grains to be sent out to enlarge or reduce the sorting action surface of the scalper 3. A wind power control valve 59 is installed in the circulation air passage 22 to remove small foreign matter falling from the scalper 3.
and the control valve 59 is connected to the supply gutter 55 so that the wind force adjustment valve 59 is adjusted in conjunction with the displacement of the feed gutter 55. For example, when the number of grains to be sorted is small, the sorting surface of the scalper 3 can be reduced to quickly discharge the straw waste etc. separated in this area, while the sorting power can be properly obtained. When there are many grains, the sorting surface of the scalper 3 can be expanded to reliably separate the grains and straw waste, and the sorting accuracy of the scalper 3 can be improved. By adjusting the sorting air force in conjunction with the adjustment of the sorting surface of the scalper 3, small foreign matter can be efficiently removed from the grains that have passed through the scalper 3, and the sorting accuracy in the circulation air passage 22 can be improved. This has practical effects such as being able to reduce sorting losses and improve sorting efficiency more easily than in the past by properly maintaining the sorting loss.

[Brief explanation of the drawing]

FIG. 1 is an overall vertical cross-sectional view showing an embodiment of the present invention, and FIG. 2 is a working explanatory diagram. 1... Supply hopper, 3... Scalper, 55
...Supply gutter.

Claims (1)

[Scope of utility model registration request] A scalper 3 is attached to the lower part of the supply hopper 1 into which the sorted grains are fed, and the scalper 3 removes relatively large impurities mixed into the sorted grains, and the sorted materials are sent to the scalper 3. The supply gutter 55 is displaceably attached, and the feed gutter 55 is displaced in accordance with the increase or decrease in the amount of sorted grains to be sent out, thereby expanding or contracting the sorting surface of the scalper 3, and reducing the size of small foreign objects that fall from the scalper 3. A wind force regulating valve 59 is installed in the circulation air passage 22 for removing the air, and the regulating valve 59 is connected to the supply gutter 55 so as to adjust the wind force of the wind force regulating valve 59 in conjunction with the displacement of the supply gutter 55. A coarse sorting machine characterized by: