JP7846862B2 - dust removal device - Google Patents

Description

This invention relates to a dust removal device, and more specifically, to a dust removal device equipped with an air separation mechanism.

Traditionally, grain conveying lines in facilities such as joint drying and processing plants for grains like rice and wheat have been equipped with dust removal devices (hereinafter simply referred to as "dust removal devices") that have an air separation mechanism. Examples include pre-cleaners and aspirators. Pre-cleaners have a built-in fan, while aspirators have a separate fan. These dust removal devices are installed in grain conveying lines to remove foreign matter and debris such as straw, dirt, and dust that may be mixed with the conveyed grain, preventing blockages in chutes, tanks, silos, etc.

Japanese Utility Model Publication No. 61-75883

However, conventional dust removal devices have the problem of requiring a certain amount of installation space because they are installed on the conveyor line. Furthermore, connecting the dust removal device requires chute piping work, increases the length of the elevator, and deepens the pit, among other problems. In addition, conventional technologies (for example, Patent Document 1) have the problem of the dust removal device itself being large. In other words, conventional technologies have the problem of the device itself or its surrounding components becoming large due to the structure and installation method of the dust removal device.

Therefore, the present invention was made to solve the problems of the above-mentioned prior art, and aims to provide a dust removal device equipped with an air separation mechanism that can effectively remove foreign matter and debris such as straw scraps, dirt, and dust in a relatively compact configuration.

A dust removal device according to a first aspect of the present invention comprises a grain input section for inputting conveyed grain, a grain discharge section for discharging the inputted grain, and a dust discharge section for sucking up and discharging dust mixed with the grain, wherein the grain discharge section is positioned in the direction in which the inputted grain falls, and the dust discharge section is positioned opposite the grain discharge section, and a partition plate is provided between the grain discharge section and the dust discharge section at a position where it collides with the grain input from the grain input section, and the partition plate is configured to be rotatable by the collision of the grain in order to change the grain discharge path (grain discharge path area) communicating with the grain discharge section and the dust discharge path (dust discharge path area) communicating with the dust discharge section.
In the dust removal device according to the present invention, the grains falling from the grain input section to the grain discharge section collide with the partition plate, causing the partition plate to rotate so that the grain discharge path becomes larger and the dust discharge path becomes smaller.

With the dust removal device configured in this way, the grain that falls from the grain input section and before being discharged from the grain discharge section collides with the partition plate, causing the partition plate to rotate and the grain discharge path and the dust discharge path to fluctuate. More specifically, the collision of the grain with the partition plate causes the partition plate to rotate so that the grain discharge path becomes larger (wider) and the dust discharge path becomes smaller (narrower).
Therefore, according to the dust removal device of the present invention, as the amount of grain transported increases, the grain discharge path becomes larger and the waste discharge path becomes smaller, so the suction speed in the waste discharge section increases. In other words, according to the present invention, the suction speed in the waste discharge section changes according to the amount of grain transported, and the suction speed in the waste discharge section increases as the amount of grain transported increases, so a dust removal device can be obtained that can effectively discharge the waste transported and input along with the grain.

Furthermore, a dust removal device according to a second aspect of the present invention comprises a grain input section for inputting conveyed grain, a grain discharge section for discharging the inputted grain, and a dust discharge section for sucking up and discharging dust mixed with the grain, wherein the grain discharge section is located below the grain input section and the dust discharge section is located above the grain input section, and a partition plate is provided between the grain discharge section and the dust discharge section at a position where it collides with the grain input from the grain input section, and the partition plate is configured to be rotatable by the collision of the grain in order to change the grain discharge path (grain discharge path area) communicating with the grain discharge section and the dust discharge path (dust discharge path area) communicating with the dust discharge section.
In the dust removal device according to the present invention, the grain before it is discharged from the grain discharge section located below the grain input section collides with the partition plate, causing the partition plate to rotate so that the grain discharge path becomes larger and the dust discharge path becomes smaller.

With the dust removal device configured in this way, the grain before being discharged from the grain discharge section located below the grain input section collides with the partition plate, causing the partition plate to rotate and the grain discharge path and the dust discharge path to fluctuate. More specifically, the collision of the grain with the partition plate causes the partition plate to rotate so that the grain discharge path becomes larger and the dust discharge path becomes smaller.
Therefore, according to the dust removal device of the present invention, as the amount of grain transported increases, the grain discharge path becomes larger and the waste discharge path becomes smaller, so the suction speed in the waste discharge section increases. In other words, according to the present invention, the suction speed in the waste discharge section changes according to the amount of grain transported, and the suction speed in the waste discharge section increases as the amount of grain transported increases, so a dust removal device can be obtained that can effectively discharge the waste transported and input along with the grain.

Furthermore, in the dust removal device according to the third aspect of the present invention, it is preferable that, in the configuration of the first or second aspect, the upper part of the partition plate closes off the grain input section and the waste discharge section.
With this preferred configuration, since the upper part of the partition plate closes the grain input section and the waste discharge section, the suction speed in the waste discharge section is determined according to the respective areas of the grain discharge path and the waste discharge path in the lower part of the partition plate. In other words, as the amount of grain colliding with the partition plate increases, the area of the waste discharge path decreases due to the rotating partition plate, and therefore the suction speed in the waste discharge section increases. Accordingly, with this preferred configuration, the waste mixed with the grain can be effectively discharged.

According to the present invention, a dust removal device equipped with an air separation mechanism can be obtained that effectively removes foreign matter and debris such as straw scraps, dirt, and dust in a relatively compact configuration.

This diagram shows a schematic representation of a conveying device, elevator, and peripheral equipment equipped with a dust removal device (first dust removal device and second dust removal device) according to an embodiment of the present invention. This is a schematic diagram of the first dust removal device according to an embodiment of the present invention. This is a schematic diagram of a first dust removal device according to an embodiment of the present invention, showing the rotational state of a partition plate constituting the first dust removal device. This is a schematic diagram of a second dust removal device according to an embodiment of the present invention, showing the rotational state of a partition plate constituting the second dust removal device.

Hereinafter, an embodiment of the present invention, including a dust removal device (first dust removal device, second dust removal device), an elevator equipped with the dust removal device, and peripheral devices thereof, will be described based on the drawings.
Here, "grains" that are transported via the dust removal device according to this embodiment include, for example, rice, wheat, millet, barnyard millet, corn, soybeans, adzuki beans, buckwheat, and the like.

This invention relates to a dust removal device equipped with an air separation mechanism, installed in a grain conveying line at a joint drying and processing facility (such as a country elevator or rice center). The dust removal devices according to embodiments of this invention (first dust removal device, second dust removal device) are appropriately installed, for example, in conveying devices or elevators used when loading grain into a grain dryer.

Figure 1 shows a schematic diagram of a conveying device, elevator, and peripheral equipment equipped with a dust removal device (first dust removal device and second dust removal device) according to an embodiment of the present invention. Figure 2 shows a schematic diagram of the first dust removal device according to an embodiment of the present invention. Figure 3 is a schematic diagram of the first dust removal device according to an embodiment of the present invention, showing the rotational state of the partition plate constituting the first dust removal device. Furthermore, Figure 4 is a schematic diagram of the second dust removal device according to an embodiment of the present invention, showing the rotational state of the partition plate constituting the second dust removal device.

Figure 1 shows a schematic diagram of the conveying device 300 and elevator 400 used when transferring grain from the receiving process to the drying process (not shown). As shown in Figure 1, a first dust removal device 100 is provided in the section where the grain is transferred from the conveying device 300 to the elevator 400, and a second dust removal device 200 is provided in the section where the grain is transferred from the elevator 400 to other equipment (not shown), such as a dryer.

First, a description will be given of the first dust removal device according to an embodiment of the present invention.

Figure 2 shows a schematic diagram of the first dust removal device according to an embodiment of the present invention. As shown in Figure 2, the first dust removal device 100 according to this embodiment is provided at the end of the conveying device 300 that conveys grain K.

The conveying device 300 is constructed using a conveying pulley 301 and a conveying belt 302, among other components. The conveying belt 302 is constructed in an endless manner using one or more materials such as rubber, synthetic resin, or metal. Although omitted in Figure 2 to avoid complexity, the conveying device 300 also includes other pulleys, a drive mechanism, and a control device.

The conveying device 300 shown in Figure 2 is constructed by winding a conveying belt 302 endlessly around a plurality of pulleys, including a conveying pulley 301. A rotational driving force is applied to any of the pulleys or the conveying belt 302 by a drive device. In other words, in the conveying device 300 according to this embodiment, grain K is placed on the conveying belt 302, and the conveying process of the grain K is carried out by driving the conveying belt 302 by the drive device. As shown in Figure 2, in this embodiment, a first dust removal device 100 is provided at the downstream end of the conveying device 300 in the conveying direction.

The first dust removal device 100 (corresponding to the "dust removal device" of the present invention) shown in Figure 2 is installed at the downstream end of the conveying device 300 in the conveying direction. The grain K conveyed by the conveying device 300 is transported to the next process or other device via the first dust removal device 100. In this embodiment, the grain K conveyed by the conveying device 300 is transferred to the elevator 400 via the first dust removal device 100 (see Figure 1).

The first dust removal device 100 according to this embodiment is composed of a main casing section 100A, a grain input section 101 provided in the main casing section 100A, a grain discharge section 102 provided below the main casing section 100A, a waste discharge section 103 provided above the main casing section 100A, and a partition plate 110 provided inside the main casing section 100A at a position where it collides with the grain K input from the grain input section 101.

The grain K, transported by the conveying device 300, is fed in from the grain input section 101. After colliding with the partition plate 110, the grain K is discharged from the grain discharge section 102 via the grain discharge path 120. Any debris mixed with the grain K is discharged from the debris discharge section 103 via the debris discharge path 130.

The grain input section 101, which constitutes the first dust removal device 100 in this embodiment, is provided close to the downstream end of the conveying device 300 in the transport direction. This grain input section 101 is formed as an opening in a part of the main casing section 100A. The grain K conveyed by the conveying belt 302 is fed into the first dust removal device 100 from the downstream end of the conveying belt 302 via the grain input section 101.

The partition plate 110, which constitutes the first dust removal device 100 according to this embodiment, is installed inside the first dust removal device 100. Furthermore, this partition plate 110 is positioned where the grain K introduced from the grain input section 101 collides with it.

This partition plate 110 is constructed using a first partition plate portion 111 and a second partition plate portion 112.
The first partition plate portion 111, which forms the partition plate 110, has one end, the upper portion 111a of the first partition plate, fixed to the inside of the main casing portion 100A, and the other end, the lower portion 111b of the first partition plate, fixed to a partition plate mounting shaft portion 115 provided inside the main casing portion 100A. This upper portion 111a of the first partition plate prevents the grain input portion 101 and the waste discharge portion 103 from communicating, creating a blocked-off state.

The second partition plate portion 112, which forms the partition plate 110, has one end, the upper portion 112a, rotatably attached to the partition plate mounting shaft portion 115, and the other end, the lower portion 112b, is bent toward the conveying device 300. The second partition plate portion 112 is constructed integrally, with the upper portion 112a rotatably mounted on the partition plate mounting shaft portion 115, and the lower portion 112b being bent toward the conveying belt 302 to more appropriately collide with the grain K introduced from the grain input portion 101.

Furthermore, the end of the upper portion 112a of the second partition plate 112 is bent at a predetermined angle toward the conveying device 300 to act as a stopper when the second partition plate 112 rotates. In other words, even if grain K collides with the second partition plate 112 and the second partition plate 112 rotates away from the conveying device 300, the end of the upper portion 112a of the second partition plate and the lower portion 111b of the first partition plate come into contact, restricting the movement of the second partition plate 112, preventing the second partition plate 112 from contacting the inside of the main casing portion 100A (and thus preventing the dust discharge path 130 from being blocked).

In this embodiment, the interior of the first dust removal device 100 is partitioned by a partition plate 110. The area inside the partition plate 110 (the side from the partition plate 110 to the conveyor belt 302 (left side in Figure 2)) where grain K is discharged and transported is defined as the grain discharge path (grain discharge path area) 120. The area outside the partition plate 110 (the side from the partition plate 110 to the opposite conveyor belt 302 (right side in Figure 2)) where dust is sucked and discharged by the suction air A is defined as the dust discharge path (dust discharge path area) 130.

The grain discharge section 102, which constitutes the first dust removal device 100 in this embodiment, is located below the main casing section 100A. This grain discharge section 102 is constructed, for example, using a cylindrical member, at the location below the main casing section 100A. The grain K, fed from the conveyor belt 302 via the grain input section 101, collides with the partition plate 110 and is then discharged from this grain discharge section 102 towards the elevator 400.

The debris discharge section 103, which constitutes the first dust removal device 100 according to this embodiment, is located above the main casing section 100A. This debris discharge section 103 is constructed, for example, using a cylindrical member, above the main casing section 100A. Upstream of the debris discharge section 103, a suction device (not shown) for sucking air from inside the first dust removal device 100 is provided. Due to the action of this suction device, in the first dust removal device 100 according to this embodiment, suctioned air A flows from the conveying device 300 side, through the inside of the first dust removal device 100, and outwards from the debris discharge section 103. Since the suctioned air A is sucked in such a way that it crosses the downward flow of grain K shown in the grain discharge path 120 (see Figure 2), in this embodiment, foreign matter and debris such as straw, dirt, and dust mixed in with the grain K can be effectively removed. In this embodiment, as the suction air A moves, the dust and debris mixed with the grain are appropriately discharged from the dust discharge section 103 to the outside of the first dust discharge device 100.

The first dust removal device 100 according to this embodiment is configured as described above, and therefore provides the following effects. The effects of the first dust removal device 100 according to this embodiment will be explained below using Figures 1 to 3, based on the configuration described above.

Figure 3 is a schematic diagram of a first dust removal device 100 according to an embodiment of the present invention, showing the rotational state of the partition plate 110 that constitutes the first dust removal device 100. More specifically, Figure 3(a) is a schematic diagram showing the state before grain K is fed into the first dust removal device 100 and the partition plate 110 is not rotated, and Figure 3(b) is a schematic diagram showing the state after grain K has been fed into the first dust removal device 100, colliding with the partition plate 110 and causing the partition plate 110 to rotate.

The first dust removal device 100 according to this embodiment is provided at the downstream end of the conveying device 300. The grain K placed on the conveyor belt 302 of the conveying device 300 is configured to be fed into the first dust removal device 100 from the grain input section 101 as the conveyor belt 302 moves.

The grain K fed from the conveying device 300 (consisting of the conveying belt 302) into the grain input section 101 collides with the partition plate 110 installed in the first dust removal device 100. More specifically, the grain K collides with the second partition plate section 112 that makes up the partition plate 110. Since the lower part 112b of the second partition plate section 112 is bent towards the conveying device 300, the grain K fed from the grain input section 101 reliably collides with the partition plate 110 (specifically, the lower part 112b of the second partition plate 112).

When grain K collides with the second partition plate section 112 of the partition plate 110, the collision energy makes it easier to separate the grain K from any dust or debris mixed in with it. In other words, the collision of grain K with the second partition plate section 112 effectively separates the dust and debris mixed in with the grain K from the grain K before and after the partition plate 110 within the first dust removal device 100.

Furthermore, when the grain K collides with the second partition plate portion 112 of the partition plate 110, the second partition plate portion 112, which constitutes the first dust removal device 100 according to this embodiment, rotates around the partition plate mounting shaft portion 115 in a direction away from the conveying device 300. As a result of this rotation of the second partition plate portion 112 away from the conveying device 300, the grain discharge path (grain discharge path area) 120 widens and the rubbish discharge path (rubish discharge path area) 130 narrows, as shown in Figure 3(b). Furthermore, even if grain K collides with the second partition plate 112 and the second partition plate 112 rotates away from the conveying device 300, the movement of the second partition plate 112 is restricted by the contact between the end of the upper part 112a of the second partition plate and the lower part 111b of the first partition plate, preventing the second partition plate 112 from contacting the inside of the main casing 100A. Therefore, the waste discharge path 130 is not blocked.

In this embodiment, the suction air A flows in the direction of the white arrows in Figures 2 and 3(b). That is, the suction air A flows from the conveying device 300 side, through the debris discharge path 130, towards the debris discharge section 103 and its exterior. This suction air A causes the debris mixed with the grain K in the first debris discharge device 100 according to this embodiment to be discharged from the debris discharge section 103 to the exterior of the first debris discharge device 100 via the debris discharge path 130.

As described above, when the grain K collides with the second partition plate 112, the grain discharge path 120 widens and the waste discharge path 130 narrows. The widening of the grain discharge path 120 allows the grain K to be efficiently discharged from the grain discharge section 102. In addition, the narrowing of the waste discharge path 130 increases the flow velocity (suction speed) of the suction air A in the waste discharge path 130. According to the first waste discharge device 100 of this embodiment, as the amount of grain K conveyed increases, the waste discharge path 130 narrows and the suction speed in the waste discharge section 103 increases. Therefore, the waste conveyed and input along with the grain K can be effectively discharged via the waste discharge path 130 and the waste discharge section 103.

Next, a second dust removal device 200 according to an embodiment of the present invention will be described.

As explained earlier using Figure 1, in this embodiment, a first dust removal device 100 is provided in the section where grain K is transferred from the conveying device 300 to the elevator 400, and a second dust removal device 200 is provided in the section where grain K is transferred from the elevator 400 to other equipment such as a dryer (not shown).

Figure 4 is a schematic diagram of a second dust removal device 200 according to an embodiment of the present invention, showing the rotational state of the partition plate constituting the second dust removal device 200. More specifically, Figure 4(a) is a schematic diagram showing the state before grain is fed into the second dust removal device 200 and the partition plate is not rotated, while Figure 3(b) is a schematic diagram showing the state after grain has been fed into the second dust removal device 200, colliding with the partition plate and causing the partition plate to rotate.

Furthermore, as shown in Figure 4, the second dust removal device 200 according to this embodiment is installed above the elevator 400 that transports the grain K. The grain K is transported to the elevator 400 via the transport device 300 and the first dust removal device 100, and then fed into the second dust removal device 200 at the upper position of the elevator 400. The grain K fed into the second dust removal device 200 is then transported to equipment such as a dryer.

The elevator 400 is constructed using an upper pulley 401, a bucket belt 402, and buckets 403, etc. The bucket belt 402 is constructed in an endless manner using one or more materials such as rubber, synthetic resin, or metal. Although omitted in Figure 4 to avoid complexity, the elevator 400 also includes a lower pulley, a drive unit, and a control unit.

The elevator 400 shown in Figure 4 is constructed using an upper pulley 401 and a lower pulley (not shown) pivotally supported at the upper and lower ends within the housing, an endless bucket belt 402 suspended between the upper and lower pulleys, and a plurality of buckets 403 provided on the endless bucket belt 402. Each or some of the buckets 403 are provided with a scraper (not shown) on the opening edge of the bucket 403. In this embodiment, the elevator 400 is driven by a drive device that applies rotational driving force to at least one of the upper pulley 401 and the lower pulley. This rotational driving force drives the bucket belt 402, causing the buckets 403 on the bucket belt 402 to move up and down. In Figure 4, when the bucket belt 402 is driven clockwise, the bucket 403 located to the left of the upper pulley 401 moves upward, and the bucket 403 located to the right of the upper pulley 401 moves downward.

In this embodiment, the grain K conveyed by the conveying device 300 is fed into the lower part of the elevator 400 via the first dust removal device 100 (see Figure 1). The grain K fed into the lower part of the elevator 400 is scooped up by a bucket 403 that rotates clockwise and transported to the upper part of the elevator 400. The grain K transported to the upper part of the elevator 400 is fed into the second dust removal device 200 located in the upper part of the elevator 400.

The second dust removal device 200 (corresponding to the "dust removal device" of the present invention) shown in Figure 4 is installed above the elevator 400. The grain K transported by the elevator 400 (or its bucket 403) is then transported to a dryer or the like via the second dust removal device 200 (see Figure 1).

The second dust removal device 200 according to this embodiment is composed of a main casing section 200A, a grain input section 201 formed to allow grain K to be input from the upper part of the elevator 400, a grain discharge section 202 provided below the main casing section 200A, a waste discharge section 203 provided above the main casing section 200A, and a partition plate 210 provided inside the main casing section 200A at a position where it collides with the grain K input from the grain input section 201.

The grain K, transported by the elevator 400, is fed in through the grain input section 201. After colliding with the partition plate 210, the grain K is discharged through the grain discharge path 220 and then through the grain discharge section 202. Any debris mixed with the grain K is discharged through the debris discharge path 230 and then through the debris discharge section 203.

The grain input section 201, which constitutes the second dust removal device 200 in this embodiment, is located above the elevator 400 and is formed with an opening at a position where grain K fed from the bucket 403 of the elevator 400 can be fed into it. The grain K transported by the bucket 403 is fed from the bucket 403 located above the elevator 400 through the grain input section 201 into the second dust removal device 200.

The partition plate 210, which constitutes the second dust removal device 200 according to this embodiment, is installed inside the second dust removal device 200. Furthermore, this partition plate 210 is positioned where the grain K introduced from the grain input section 201 collides with it.

This partition plate 210 is integrally formed using a plate-like member. One end of the partition plate 210, the upper portion 210a, is rotatably attached to a partition plate mounting shaft portion 215 provided on the inside of the upper portion of the elevator 400. The other end of the partition plate 210, the lower portion 210b, is bent toward the elevator 400. In this embodiment, the partition plate 210 is integrally constructed, with the upper portion 210a rotatably mounted on the color sorter 15, and the lower portion 210b bent toward the elevator 400 to more appropriately collide with the grain K introduced from the grain input section 201. Furthermore, this partition plate 210 prevents direct communication between the grain input section 201 and the waste discharge section 203, creating a separated state.

Furthermore, the end of the upper portion 210a of the partition plate 210 is bent at a predetermined angle toward the elevator 400 to act as a stopper when the partition plate 210 rotates. In other words, even if grain K collides with the partition plate 210 and the partition plate 210 rotates away from the elevator 400, the end of the upper portion 210a of the partition plate 210 contacts the housing of the elevator 400, etc., to restrict the movement of the partition plate 210, preventing the partition plate 210 from contacting the inside of the main casing portion 200A (and thus preventing the dust discharge path 230 from being blocked).

In this embodiment, the interior of the second dust removal device 200 is partitioned by a partition plate 210. The area inside the partition plate 210 (from the partition plate 110 towards the bucket 403 (left side in Figure 4)) where grain K is discharged and transported is defined as the grain discharge path (grain discharge path area) 220. The area outside the partition plate 210 (from the partition plate 210 towards the opposite side of the bucket 403 (right side in Figure 4)) where dust is sucked and discharged by suction air A (see Figure 4(b)) is defined as the dust discharge path (dust discharge path area) 230.

The grain discharge section 202, which constitutes the second dust removal device 200 in this embodiment, is located below the main casing section 200A. This grain discharge section 202 is constructed, for example, using a cylindrical member, at the location below the main casing section 200A. The grain K, introduced from the bucket 403 via the grain input section 201, collides with the partition plate 210 and is then discharged from this grain discharge section 202 to the next process device (for example, a dryer).

The debris discharge section 203, which constitutes the second dust removal device 200 according to this embodiment, is located above the main casing section 200A. This debris discharge section 203 is constructed, for example, using a cylindrical member, at the location above the main casing section 200A. Upstream of the debris discharge section 203, a suction device (not shown) for sucking air from inside the second dust removal device 200 is provided. Due to the action of this suction device, in the second dust removal device 200 according to this embodiment, suctioned air A flows from the elevator 400 side, through the inside of the second dust removal device 200, and outwards from the debris discharge section 203 (see Figure 4(b)). Since the suctioned air A is sucked in such a way that it crosses the downward flow of grain K shown in the grain discharge path 220 (see Figure 4), in this embodiment, foreign matter and debris such as straw, dirt, and dust mixed in with the grain K can be effectively removed. In this embodiment, as the suction air A moves, the dust and debris mixed with the grain K are appropriately discharged from the dust discharge section 203 to the outside of the second dust discharge device 200.

The second dust removal device 200 according to this embodiment is configured as described above, and therefore provides the following effects. The effects of the second dust removal device 200 according to this embodiment will be explained below using Figures 1 and 4, based on the configuration described above.

Figure 4 is a schematic diagram of a second dust removal device 200 according to an embodiment of the present invention, showing the rotational state of the partition plate 210 that constitutes the second dust removal device 200. More specifically, Figure 4(a) is a schematic diagram showing the state before grain K is fed into the second dust removal device 200 and the partition plate 210 is not rotated, and Figure 4(b) is a schematic diagram showing the state after grain K has been fed into the second dust removal device 200, colliding with the partition plate 210 and causing the partition plate 210 to rotate.

The second dust removal device 200 in this embodiment is located above the elevator 400, and is configured so that the grain K transported by the bucket 403 of the elevator 400 is fed into the second dust removal device 200 from the grain input section 201 as the bucket 403 moves.

The grain K, fed from the elevator 400 (and its buckets 403) into the grain input section 201, collides with the partition plate 210 located within the second dust removal device 200. More specifically, the grain K collides with the lower portion 210b of the partition plate 210. Since the lower portion 210b of the partition plate 210 is bent towards the elevator 400, the grain K fed from the grain input section 201 is guaranteed to collide with the partition plate 210 (and its lower portion 210b).

When grain K collides with the lower portion 210b of the partition plate 210, the collision energy makes it easier to separate the grain K from any dust or debris mixed in with it. In other words, the collision of grain K with the partition plate 210 effectively separates the dust and debris mixed in with the grain K from the grain K before and after the partition plate 210 within the second dust removal device 200.

Furthermore, when the grain K collides with the lower part 210b of the partition plate 210, the partition plate 210, which constitutes the second dust removal device 200 according to this embodiment, rotates around the partition plate mounting shaft 215 in a direction away from the elevator 400. As a result of this rotation of the partition plate 210 away from the elevator 400, the grain discharge path (grain discharge path area) 220 widens and the rubbish discharge path (rubish discharge path area) 230 narrows, as shown in Figure 4(b). Furthermore, even if grain K collides with the partition plate 210 and the partition plate 210 rotates away from the elevator 400, the movement of the partition plate 210 is restricted because the end of the upper portion 210a of the partition plate 210 contacts the housing of the elevator 400, preventing the partition plate 210 from contacting the inside of the main casing portion 200A. Therefore, the waste discharge path 230 is not blocked.

In this embodiment, the suction air A flows in the direction of the white arrow in Figure 4(b). That is, the suction air A flows from the elevator 400 side, through the debris discharge path 230, towards the debris discharge section 203 and its exterior. This suction air A causes the debris mixed with the grain K in the second dust removal device 200 of this embodiment to be discharged from the debris discharge section 203 to the exterior of the second dust removal device 200 via the debris discharge path 230.

As described above, when the grain K collides with the partition plate 210, the grain discharge path 220 widens and the waste discharge path 230 narrows. The widening of the grain discharge path 220 allows the grain K to be efficiently discharged from the grain discharge section 202. In addition, the narrowing of the waste discharge path 230 increases the flow velocity (suction speed) of the suction air A in the waste discharge path 230. According to the second waste discharge device 200 of this embodiment, as the amount of grain K conveyed increases, the waste discharge path 230 narrows and the suction speed in the waste discharge section 203 increases. Therefore, the waste conveyed and input along with the grain K can be effectively discharged via the waste discharge path 230 and the waste discharge section 203.

The first dust removal device 100 and the second dust removal device 200 according to this embodiment have the configuration described with reference to Figures 1 to 4, and therefore provide the following effects.

The dust removal device according to this embodiment (first dust removal device 100, second dust removal device 200) comprises grain input sections 101, 201 for inputting the conveyed grain K, grain discharge sections 102, 202 for discharging the input grain K, and dust discharge sections 103, 203 for sucking up and discharging dust mixed with the grain K. The grain discharge sections 102, 202 are positioned in the direction in which the input grain K falls, and the dust discharge sections 103, 203 are positioned opposite the grain discharge sections 102, 202. Between the outlets 102, 202 and the waste discharge sections 103, 203, partition plates 110, 210 are provided at positions where they collide with the grain K introduced from the grain input sections 101, 201. The partition plates 110, 210 are configured to rotate upon impact with the grain K in order to change the grain discharge paths (grain discharge path area) 120, 220 communicating with the grain discharge sections 102, 202 and the waste discharge paths (waste discharge path area) 130, 230 communicating with the waste discharge sections 103, 203. In the dust removal device (first dust removal device 100, second dust removal device 200) according to this embodiment, the grains K falling from the grain input sections 101, 201 to the grain discharge sections 102, 202 collide with the partition plates 110, 210, causing the grain discharge paths 120, 220 to widen and the waste discharge paths 130, 230 to narrow, thereby causing the partition plates 110, 210 to rotate.

With the dust removal devices 100 and 200 configured in this way, when grain K falls from the grain input sections 101 and 201 and is discharged from the grain discharge sections 102 and 202, it collides with the partition plates 110 and 210, causing the partition plates 110 and 210 to rotate and the grain discharge paths 120 and 220 and the waste discharge paths 130 and 230 to fluctuate. More specifically, when grain K collides with the partition plates 110 and 210, the partition plates 110 and 210 rotate so that the grain discharge paths 120 and 220 become larger (wider) and the waste discharge paths 130 and 230 become smaller (narrower).
Therefore, according to the dust removal devices 100 and 200 of this embodiment, as the amount of grain K conveyed increases, the grain discharge paths 120 and 220 become larger and the waste discharge paths 130 and 230 become smaller, so the suction speed in the waste discharge paths 130 and 230 increases. In other words, according to this embodiment, the suction speed in the waste discharge paths 130 and 230 changes according to the amount of grain K conveyed, and the suction speed in the waste discharge paths 130 and 230 increases as the amount of grain K conveyed increases, so it is possible to obtain dust removal devices 100 and 200 that can effectively discharge the waste conveyed and input along with the grain K.

Furthermore, the dust removal device 100, 200 according to this embodiment includes a grain input section 101, 201 for inputting the conveyed grain K, a grain discharge section 102, 202 for discharging the input grain K, and a dust discharge section 103, 203 for sucking up and discharging dust mixed with the grain K. The grain discharge sections 102, 202 are located below the grain input sections 101, 201, and the dust discharge sections 103, 203 are located above the grain input sections 101, 202. Between the 202 and the waste discharge sections 103 and 203, partition plates 110 and 210 are provided at positions where they collide with the grain K introduced from the grain input sections 101 and 201. The partition plates 110 and 210 are configured to rotate upon collision with the grain K in order to change the grain discharge paths (grain discharge path area) 120 and 220 communicating with the grain discharge sections 102 and 202 and the waste discharge paths (waste discharge path area) 130 and 230 communicating with the waste discharge sections 103 and 203. In the dust removal devices 100 and 200 according to this embodiment, the grain K before being discharged from the grain discharge sections 102 and 202, located below the grain input sections 101 and 201, collides with the partition plates 110 and 210. This causes the partition plates 110 and 210 to rotate, thereby increasing the size of the grain discharge paths 120 and 220 and decreasing the size of the waste discharge paths 130 and 230.

With the dust removal devices 100 and 200 configured in this way, the grain K before being discharged from the grain discharge sections 102 and 202 located below the grain input sections 101 and 201 collides with the partition plates 110 and 210, causing the partition plates 110 and 210 to rotate and the grain discharge paths 120 and 220 and the waste discharge paths 130 and 230 to fluctuate. More specifically, the partition plates 110 and 210 rotate so that the grain discharge paths 120 and 220 become larger and the waste discharge paths 130 and 230 become smaller as the grain K collides with them.
Therefore, according to the dust removal devices 100 and 200 of this embodiment, as the amount of grain K conveyed increases, the grain discharge paths 120 and 220 become larger and the waste discharge paths 130 and 230 become smaller, so the suction speed in the waste discharge paths 130 and 230 increases. In other words, according to this embodiment, the suction speed in the waste discharge paths 130 and 230 changes according to the amount of grain K conveyed, and the suction speed in the waste discharge paths 130 and 230 increases as the amount of grain K conveyed increases, so it is possible to obtain dust removal devices 100 and 200 that can effectively discharge the waste conveyed and input along with the grain K.

Furthermore, in this embodiment, it is preferable that the dust removal devices 100 and 200 have a configuration in which the upper parts of the partition plates 110 and 210 close off the grain input sections 101 and 201 and the waste discharge sections 103 and 203.
In this preferred configuration, since the upper parts of the partition plates 110 and 210 block the grain input sections 101 and 201 and the waste discharge sections 103 and 203, the suction speed in the waste discharge paths 120 and 220 is determined according to the respective areas of the grain discharge paths 120 and 220 and the waste discharge paths 130 and 230 in the lower parts of the partition plates 110 and 210. In other words, as the amount of grain K colliding with the partition plates 110 and 210 increases, the area of the waste discharge paths 130 and 230 decreases due to the rotating partition plates 110 and 210, and therefore the suction speed in the waste discharge paths 130 and 230 increases. Accordingly, with this preferred configuration, waste mixed in with the grain K can be effectively discharged.

<Other Embodiments>
It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made as necessary within the scope of the spirit of the present invention, and all such modifications fall within the technical scope of the present invention.

The above embodiment described the case where the conveyed material is grain, but the present invention is not limited to this configuration. Therefore, for example, the conveyed material may be various granular materials (nuts, beans, grains, resins, stones, glass, wood, etc.) or various powders. Thus, the dust removal device of the present invention can also be applied to conveyed materials other than grain.

Furthermore, while the above embodiment described a configuration in which the dust removal devices 100 and 200 are installed downstream of the conveying device 300 and above the elevator 400, the present invention is not limited to this configuration. Therefore, it can also be used, for example, before, after, or above and below, various other devices.

This invention relates to a dust removal device equipped with an air separation mechanism, installed in a grain conveying line at a joint drying and processing facility (such as a country elevator or rice center).

The dust removal device according to the present invention comprises a grain input section for inputting conveyed grain, a grain discharge section for discharging the input grain, and a dust discharge section for sucking up and discharging dust mixed with the grain. The grain discharge section is located below the grain input section, and the dust discharge section is located above the grain input section. A partition plate is provided between the grain discharge section and the dust discharge section at a position where it collides with the grain input from the grain input section. The partition plate is configured to rotate upon collision with the grain in order to change the grain discharge path (grain discharge path area) communicating with the grain discharge section and the dust discharge path (dust discharge path area) communicating with the dust discharge section.

According to the present invention, a dust removal device equipped with an air separation mechanism can be obtained that effectively removes dust and debris in a relatively compact configuration.

The dust removal device according to the present invention has the above-described configuration and effects, and is therefore considered to have high industrial applicability.

100 First dust removal device (corresponding to the "dust removal device" of the present invention)
100A Main casing section 101 Grain input section 102 Grain discharge section 103 Dust discharge section 110 Partition plate 111 First partition plate section 111a Upper part of first partition plate 111b Lower part of first partition plate 112 Second partition plate section 112a Upper part of second partition plate 112b Lower part of second partition plate 115 Partition plate mounting shaft section 120 Grain discharge path 130 Dust discharge path 200 Second dust removal device (corresponding to the "dust removal device" of the present invention)
200A Main casing section 201 Grain input section 202 Grain discharge section 203 Dust discharge section 210 Partition plate 210a Upper part of partition plate 210b Lower part of partition plate 215 Partition plate mounting shaft section 220 Grain discharge path 230 Dust discharge path 300 Conveying device 301 Conveying pulley 302 Conveying belt 400 Lifting device 401 Upper pulley 402 Bucket belt 403 Bucket A Suction air (flow of suction air)
K Grains

Claims (2)

It comprises a grain input section for inputting the transported grain, a grain discharge section for discharging the inputted grain, and a waste discharge section for sucking up and discharging waste mixed with the grain,
The grain discharge section is provided in the direction in which the input grain falls, and the waste discharge section is provided at a position opposite to the grain discharge section.
Between the grain input section and the waste discharge section, a partition plate is provided at a position where it collides with the grain introduced from the grain input section.
The partition plate is configured to be rotatable by the collision of grains in order to change the grain discharge path communicating with the grain discharge section and the waste discharge path communicating with the waste discharge section.
The upper part of the partition plate blocks the grain input section and the waste discharge section.
A dust removal device characterized by the following features. It comprises a grain input section for inputting the transported grain, a grain discharge section for discharging the inputted grain, and a waste discharge section for sucking up and discharging waste mixed with the grain,
The grain discharge section is located below the grain input section, and the waste discharge section is located above the grain input section.
Between the grain input section and the waste discharge section, a partition plate is provided at a position where it collides with the grain introduced from the grain input section.
The partition plate is configured to be rotatable by the collision of grains in order to change the grain discharge path communicating with the grain discharge section and the waste discharge path communicating with the waste discharge section.
The upper part of the partition plate blocks the grain input section and the waste discharge section.
A dust removal device characterized by the following features.